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Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Pre-Combustion CO2 Removal System … Demonstration Unit  

NLE Websites -- All DOE Office Websites (Extended Search)

Post-Combustion CO Post-Combustion CO 2 Capture System for Existing Coal-fired Power Plant Project Review (DE-FE-0007580) Gökhan Alptekin, PhD Ambal Jayaraman, PhD Robert Copeland, PhD DOE/NETL CO 2 Capture Technology Meeting Meeting Pittsburgh, PA July 8, 2013 TDA R e s e a r c h Project Summary * The objective is to develop a post-combustion capture process for coal-fired power plants and demonstrate technical feasibility (at bench-scale) and economic viability of the new concept * A mesoporous carbon adsorbent is used to selectively remove CO 2 from the flue gas, regenerating under very mild conditions Budget Period 1 * Sorbent Optimization/scale-up and Laboratory Evaluations * Process Design and System Analysis Budget Period 2 * Long-term Sorbent Cycling * Design of a Breadboard Prototype Test Unit

2

Thermal ignition combustion system  

SciTech Connect

A thermal ignition combustion system adapted for use with an internal combustion engine is described comprising: (a) means for providing ignition chamber walls defining an ignition chamber, the chamber walls being made of a material having a thermal conductivity greater than 20 W/m/sup 0/C. and a specific heat greater than 480J/kg/sup 0/C., the ignition chamber being in constant communication with the main combustion chamber; (b) means for maintaining the temperature of the chamber walls above a threshold temperature capable of causing ignition of a fuel; and (c) means for conducting fuel to the ignition chamber.

Kamo, R.; Kakwani, R.M.; Valdmanis, E.; Woods, M.E.

1988-04-19T23:59:59.000Z

3

Coal combustion system  

DOE Patents (OSTI)

In a coal combustion system suitable for a gas turbine engine, pulverized coal is transported to a rich zone combustor and burned at an equivalence ratio exceeding 1 at a temperature above the slagging temperature of the coal so that combustible hot gas and molten slag issue from the rich zone combustor. A coolant screen of water stretches across a throat of a quench stage and cools the combustible gas and molten slag to below the slagging temperature of the coal so that the slag freezes and shatters into small pellets. The pelletized slag is separated from the combustible gas in a first inertia separator. Residual ash is separated from the combustible gas in a second inertia separator. The combustible gas is mixed with secondary air in a lean zone combustor and burned at an equivalence ratio of less than 1 to produce hot gas motive at temperature above the coal slagging temperature. The motive fluid is cooled in a dilution stage to an acceptable turbine inlet temperature before being transported to the turbine.

Wilkes, Colin (Lebanon, IN); Mongia, Hukam C. (Carmel, IN); Tramm, Peter C. (Indianapolis, IN)

1988-01-01T23:59:59.000Z

4

Thermal ignition combustion system  

DOE Patents (OSTI)

The thermal ignition combustion system comprises means for providing walls defining an ignition chamber, the walls being made of a material having a thermal conductivity greater than 20 W/m C and a specific heat greater than 480 J/kg C with the ignition chamber being in constant communication with the main combustion chamber, means for maintaining the temperature of the walls above a threshold temperature capable of causing ignition of a fuel, and means for conducting fuel to the ignition chamber. 8 figs.

Kamo, R.; Kakwani, R.M.; Valdmanis, E.; Woods, M.E.

1988-04-19T23:59:59.000Z

5

Thermal ignition combustion system  

SciTech Connect

The thermal ignition combustion system comprises means for providing walls defining an ignition chamber, the walls being made of a material having a thermal conductivity greater than 20 W/m.degree. C. and a specific heat greater than 480 J/kg.degree. C. with the ignition chamber being in constant communication with the main combustion chamber, means for maintaining the temperature of the walls above a threshold temperature capable of causing ignition of a fuel, and means for conducting fuel to the ignition chamber.

Kamo, Roy (Columbus, IN); Kakwani, Ramesh M. (Columbus, IN); Valdmanis, Edgars (Columbus, IN); Woods, Melvins E. (Columbus, IN)

1988-01-01T23:59:59.000Z

6

Premix charge, compression ignition combustion system optimization...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Premix charge, compression ignition combustion system optimization Premix charge, compression ignition combustion system optimization Presentation given at DEER 2006, August 20-24,...

7

Emissions and Heat Transfer in Combustion Systems  

Science Journals Connector (OSTI)

A variety of combustion systems that employ turbulent diffusion combustion have been major sources of air pollutants such as NOx, particulates and hydrocarbons in spite of their high thermal efficiency compare...

Y. Daisho

1993-01-01T23:59:59.000Z

8

Assessment of Literature Related to Combustion Appliance Venting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Assessment of Literature Related to Combustion Appliance Venting Systems Assessment of Literature Related to Combustion Appliance Venting Systems Title Assessment of Literature Related to Combustion Appliance Venting Systems Publication Type Report LBNL Report Number LBNL-5798E Year of Publication 2012 Authors Rapp, Vi H., Brett C. Singer, J. Chris Stratton, and Craig P. Wray Date Published 06/2012 Abstract In many residential building retrofit programs, air tightening to increase energy efficiency is constrained by concerns about related impacts on the safety of naturally vented combustion appliances. Tighter housing units more readily depressurize when exhaust equipment is operated, making combustion appliances more prone to backdraft or spillage. Several test methods purportedly assess the potential for depressurization-induced backdrafting and spillage, but these tests are not robustly reliable and repeatable

9

Advanced Combustion Concepts - Enabling Systems and Solutions...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fuel efficiency as key market driver Stringent emission requirements System cost of advanced combustion Targets 30% fuel efficiency improvement SULEV emissions...

10

Jet plume injection and combustion system for internal combustion engines  

DOE Patents (OSTI)

An improved combustion system for an internal combustion engine is disclosed wherein a rich air/fuel mixture is furnished at high pressure to one or more jet plume generator cavities adjacent to a cylinder and then injected through one or more orifices from the cavities into the head space of the cylinder to form one or more turbulent jet plumes in the head space of the cylinder prior to ignition of the rich air/fuel mixture in the cavity of the jet plume generator. The portion of the rich air/fuel mixture remaining in the cavity of the generator is then ignited to provide a secondary jet, comprising incomplete combustion products which are injected into the cylinder to initiate combustion in the already formed turbulent jet plume. Formation of the turbulent jet plume in the head space of the cylinder prior to ignition has been found to yield a higher maximum combustion pressure in the cylinder, as well as shortening the time period to attain such a maximum pressure.

Oppenheim, Antoni K. (Kensington, CA); Maxson, James A. (Berkeley, CA); Hensinger, David M. (Albany, CA)

1993-01-01T23:59:59.000Z

11

Overview of Sonex Combustion Systems (SCS) for DI Engines | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Sonex Combustion Systems (SCS) for DI Engines Overview of Sonex Combustion Systems (SCS) for DI Engines The SCS system has undergone computational and experimental verification and...

12

Boiler Combustion Control and Monitoring System  

Energy.gov (U.S. Department of Energy (DOE))

Efficiency of existing boilers can be improved in three ways; replacement with new boilers, replacement of the burner, or installation of a combustion control system. While installation of a new boiler or replacement of the burner can lead to the greatest efficiency gains, the higher costs associated with these measures typically leads to longer payback periods than combustion control systems.

13

Fine Particle Emissions from Combustion Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Fine Particle Emissions from Combustion Systems Fine Particle Emissions from Combustion Systems Speaker(s): Allen Robinson Date: November 11, 2005 - 12:00pm Location: 90-3122 Combustion systems such as motor vehicles and power plants are major sources of fine particulate matter. This talk describes some of the changes in fine particle emissions that occur as exhaust from combustion systems mix with background air. This mixing cools and dilutes the exhaust which influences gas-particle partitioning of semi-volatile species, the aerosol size distribution, and the fine particle mass. Dilution sampling is used to characterize fine particle emissions from combustion systems because it simulates the rapid cooling and dilution that occur as exhaust mixes with the atmosphere. Results from dilution sampler

14

Development of Fuel-Flexible Combustion Systems Utilizing Opportunity...  

Office of Environmental Management (EM)

Fuel-Flexible Combustion Systems Utilizing Opportunity Fuels in Gas Turbines - Fact Sheet, May 2014 Development of Fuel-Flexible Combustion Systems Utilizing Opportunity Fuels in...

15

Combustion Turbine CHP System for Food Processing Industry -...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Combustion Turbine CHP System for Food Processing Industry - Presentation by Frito-Lay North America, June 2011 Combustion Turbine CHP System for Food Processing Industry -...

16

Method and system for controlled combustion engines  

DOE Patents (OSTI)

A system for controlling combustion in internal combustion engines of both the Diesel or Otto type, which relies on establishing fluid dynamic conditions and structures wherein fuel and air are entrained, mixed and caused to be ignited in the interior of a multiplicity of eddies, and where these structures are caused to sequentially fill the headspace of the cylinders.

Oppenheim, A. K. (Berkeley, CA)

1990-01-01T23:59:59.000Z

17

Low NOx combustion system for heavy oil  

SciTech Connect

As a result of the increasing demand for white oil as one of countermeasures for pollution control and as a fuel for motor vehicle, coupled with the increasing import of heavy crude oil, heavy oils such as asphalt and distillation residue have become surplus in Japan. It is difficult by the conventional low NOx technology to control the NOx emission from the industrial small and medium capacity boilers, which use heavy oil as their fuels. The authors have been developing and improving NOx control technologies for boilers such as low NOx burners, two-stage combustion methods and so on. They have developed a new combustion system for heavy oil, which generates less NOx and soot than conventional systems, by applying the knowledge, obtained in the course of their development of Coal Partial Combustor (CPC). The conventional low NOx combustion method for oil firing boilers has been developed based on decreasing the flame temperature and delaying the combustion reaction. In the system, however, the heavy oil shall be combusted in the intense reducing atmosphere at the high flame temperature between 1,500 C and 1,600 C, and then the combustions gas shall be cooled and oxidized by two-stage combustion air. With this system, NOx emission can be suppressed below 100ppm (converted as O{sub 2}=4%).

Kurata, Chikatoshi; Sasaki, Hideki

1999-07-01T23:59:59.000Z

18

FEMP Technology Brief: Boiler Combustion Control and Monitoring System  

Energy.gov (U.S. Department of Energy (DOE))

There are more than 45,000 industrial and commercial boilers larger than 10 MMBtu/hr in the United States with a total fuel input capacity of 2.7 million MMBtu/hr. Efficiency of existing boilers can be improved in three ways; replacement with new boilers, replacement of the burner, or installation of a combustion control system. While installation of a new boiler or replacement of the burner can lead to the greatest efficiency gains, the higher costs associated with these measures typically leads to longer payback periods than combustion control systems.

19

Biomass Combustion Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Combustion Systems Inc Combustion Systems Inc Jump to: navigation, search Name Biomass Combustion Systems Inc Address 67 Millbrook St Place Worcester, Massachusetts Zip 01606 Sector Biomass Product Combustion systems for wood fuel Website http://www.biomasscombustion.c Coordinates 42.290195°, -71.799627° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.290195,"lon":-71.799627,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

20

Oil shale retorting and combustion system  

DOE Patents (OSTI)

The present invention is directed to the extraction of energy values from l shale containing considerable concentrations of calcium carbonate in an efficient manner. The volatiles are separated from the oil shale in a retorting zone of a fluidized bed where the temperature and the concentration of oxygen are maintained at sufficiently low levels so that the volatiles are extracted from the oil shale with minimal combustion of the volatiles and with minimal calcination of the calcium carbonate. These gaseous volatiles and the calcium carbonate flow from the retorting zone into a freeboard combustion zone where the volatiles are burned in the presence of excess air. In this zone the calcination of the calcium carbonate occurs but at the expense of less BTU's than would be required by the calcination reaction in the event both the retorting and combustion steps took place simultaneously. The heat values in the products of combustion are satisfactorily recovered in a suitable heat exchange system.

Pitrolo, Augustine A. (Fairmont, WV); Mei, Joseph S. (Morgantown, WV); Shang, Jerry Y. (Fairfax, VA)

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Cooling system for internal combustion engines  

SciTech Connect

A cooling system for an internal combustion engine is described comprising: a head-side water jacket and a block-side water jacket made independent of each other; and a radiator and a cooling fan shared between the two water jackets. The improvement comprises: a first cooling water conduit for connecting the outlet of the head-side water jacket and the inlet of the radiator; a mixing valve having two water inlets and one water outlet; a second cooling water conduit for connecting one of the water inlets of the mixing valve and the outlet of the radiator; a third conduit for connecting the water outlet of the block-side water jacket and the remaining one of the water inlets of the mixing valve; a water pump, a fourth conduit branched midway from the second conduit and connected with the water inlet of the head-side water jacket; an auxiliary water pump; a fifth conduit branched midway from the third conduit and connected with the first conduit; one-way valve; and a control unit for controlling the mixing ratio of the mixing valve, the displacement of the auxiliary water pump and the operation of the cooling fan.

Itakura, M.

1988-07-26T23:59:59.000Z

22

Dry low NOx combustion system with pre-mixed direct-injection secondary fuel nozzle  

DOE Patents (OSTI)

A combustion system includes a first combustion chamber and a second combustion chamber. The second combustion chamber is positioned downstream of the first combustion chamber. The combustion system also includes a pre-mixed, direct-injection secondary fuel nozzle. The pre-mixed, direct-injection secondary fuel nozzle extends through the first combustion chamber into the second combustion chamber.

Zuo, Baifang; Johnson, Thomas; Ziminsky, Willy; Khan, Abdul

2013-12-17T23:59:59.000Z

23

DOE/NETL ADVANCED COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY  

NLE Websites -- All DOE Office Websites (Extended Search)

COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY JULY 2013 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal li- ability or responsibility for the accuracy, completeness, or useful- ness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommenda-

24

FEMP Technology Brief: Boiler Combustion Control and Monitoring System |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Boiler Combustion Control and Monitoring Boiler Combustion Control and Monitoring System FEMP Technology Brief: Boiler Combustion Control and Monitoring System October 7, 2013 - 9:12am Addthis This composite photo shows technicians observing operation at the monitoring station and making subsequent fine adjustments on combustion system controls Technical staff are making boiler adjustments with the control and monitoring system. Photo courtesy of the Department of Defense's Environmental Security Technology Certification Program. Technology Description A novel combustion control system, along with gas sensors, sets the opening of fuel and air inlets based on flue-gas concentrations. Continuous feedback from measurements of oxygen, carbon monoxide, and nitrogen oxide concentrations enable the control system

25

Advanced Combustion Concepts - Enabling Systems and Solutions...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

engine * Integration of proposed air path and HCCI combustion control strategies into ECU software * Prototype level 2 updates and proof of combustion concept for vehicle readiness...

26

Advanced Combustion Concepts - Enabling Systems and Solutions...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

engine installed and vehicle available for application, emission and fuel economy optimization with advanced combustion modes. 4 Advanced combustion control strategy, capable of...

27

Ecotoxicological Implications of Aquatic Disposal of Coal Combustion Residues In the United States: A Review  

Science Journals Connector (OSTI)

We provide an overview of research related to environmental effects of disposal of coal combustion residues (CCR) in sites in the United States. Our focus is on aspects of CCR that have the potential to negati...

Christopher L. Rowe; William A. Hopkins

2002-12-01T23:59:59.000Z

28

Combustion Turbine CHP System for Food Processing Industry -...  

Office of Environmental Management (EM)

congestion on the constrained Northeast power grid. The fact sheet contains performance data from the plant after one year of operation. Combustion Turbine CHP System for Food...

29

Chemical Looping Combustion Reactions and Systems  

SciTech Connect

Chemical Looping Combustion (CLC) is one promising fuel-combustion technology, which can facilitate economic CO2 capture in coal-fired power plants. It employs the oxidation/reduction characteristics of a metal, or oxygen carrier, and its oxide, the oxidizing gas (typically air) and the fuel source may be kept separate. This work focused on two classes of oxygen carrier, one that merely undergoes a change in oxidation state, such as Fe3O4/Fe2O3 and one that is converted from its higher to its lower oxidation state by the release of oxygen on heating, i.e., CuO/Cu2O. This topical report discusses the results of four complementary efforts: (1) the development of process and economic models to optimize important design considerations, such as oxygen carrier circulation rate, temperature, residence time; (2) the development of high-performance simulation capabilities for fluidized beds and the collection, parameter identification, and preliminary verification/uncertainty quantification (3) the exploration of operating characteristics in the laboratory-scale bubbling bed reactor, with a focus on the oxygen carrier performance, including reactivity, oxygen carrying capacity, attrition resistance, resistance to deactivation, cost and availability (4) the identification of mechanisms and rates for the copper, cuprous oxide, and cupric oxide system using thermogravimetric analysis.

Sarofim, Adel; Lighty, JoAnn; Smith, Philip; Whitty, Kevin; Eyring, Edward; Sahir, Asad; Alvarez, Milo; Hradisky, Michael; Clayton, Chris; Konya, Gabor; Baracki, Richard; Kelly, Kerry

2011-07-01T23:59:59.000Z

30

Corrosion performance of materials for advanced combustion systems  

SciTech Connect

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at much higher temperatures than those in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments requires development and application of advanced ceramic materials for heat exchangers in these designs. This paper characterizes the chemistry of coal-fired combustion environments over the wide temperature range of interest in these systems and discusses some of the experimental results for several materials obtained from laboratory tests and from exposures in a pilot-scale facility.

Natesan, K. [Argonne National Lab., IL (United States); Freeman, M.; Mathur, M. [Pittsburgh Energy Technology Center, PA (United States)

1995-05-01T23:59:59.000Z

31

Progress of energy system with chemical-looping combustion  

Science Journals Connector (OSTI)

Chemical-looping combustion with zero energy penalty of CO2...separation is a significant breakthrough in resolving energy and environment problems for power generation systems. This paper summarizes the research...

HongGuang Jin; Hui Hong; Tao Han

2009-03-01T23:59:59.000Z

32

Acoustooptic spectrometer system used to monitor combustion processes  

Science Journals Connector (OSTI)

An optical system using a tunable acoustooptic filter to measure the temperature and partial pressures of CO and CO2 in combustion gases has been designed and operated. The...

Bardash, M; Wolga, George J

1989-01-01T23:59:59.000Z

33

E-Print Network 3.0 - advanced combustion systems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

of these include pulverized coal combustion... combustion in gas turbines and coal gasification-fuel cell systems hold out ... Source: Kammen, Daniel M. - Renewable and...

34

Chemical Looping Combustion Reactions and Systems  

SciTech Connect

Chemical Looping Combustion (CLC) is one promising fuel-combustion technology, which can facilitate economic CO{sub 2} capture in coal-fired power plants. It employs the oxidation/reduction characteristics of a metal, or oxygen carrier, and its oxide, the oxidizing gas (typically air) and the fuel source may be kept separate. This topical report discusses the results of four complementary efforts: (5.1) the development of process and economic models to optimize important design considerations, such as oxygen carrier circulation rate, temperature, residence time; (5.2) the development of high-performance simulation capabilities for fluidized beds and the collection, parameter identification, and preliminary verification/uncertainty quantification; (5.3) the exploration of operating characteristics in the laboratoryscale bubbling bed reactor, with a focus on the oxygen carrier performance, including reactivity, oxygen carrying capacity, attrition resistance, resistance to deactivation, cost and availability; and (5.4) the identification of kinetic data for copper-based oxygen carriers as well as the development and analysis of supported copper oxygen carrier material. Subtask 5.1 focused on the development of kinetic expressions for the Chemical Looping with Oxygen Uncoupling (CLOU) process and validating them with reported literature data. The kinetic expressions were incorporated into a process model for determination of reactor size and oxygen carrier circulation for the CLOU process using ASPEN PLUS. An ASPEN PLUS process model was also developed using literature data for the CLC process employing an iron-based oxygen carrier, and the results of the process model have been utilized to perform a relative economic comparison. In Subtask 5.2, the investigators studied the trade-off between modeling approaches and available simulations tools. They quantified uncertainty in the high-performance computing (HPC) simulation tools for CLC bed applications. Furthermore, they performed a sensitivity analysis for velocity, height and polydispersity and compared results against literature data for experimental studies of CLC beds with no reaction. Finally, they present an optimization space using simple non-reactive configurations. In Subtask 5.3, through a series of experimental studies, behavior of a variety of oxygen carriers with different loadings and manufacturing techniques was evaluated under both oxidizing and reducing conditions. The influences of temperature, degree of carrier conversion and thermodynamic driving force resulting from the difference between equilibrium and system O{sub 2} partial pressures were evaluated through several experimental campaigns, and generalized models accounting for these influences were developed to describe oxidation and oxygen release. Conversion of three solid fuels with widely ranging reactivities was studied in a small fluidized bed system, and all but the least reactive fuel (petcoke) were rapidly converted by oxygen liberated from the CLOU carrier. Attrition propensity of a variety of carriers was also studied, and the carriers produced by freeze granulation or impregnation of preformed substrates displayed the lowest rates of attrition. Subtask 5.4 focused on gathering kinetic data for a copper-based oxygen carrier to assist with modeling of a functioning chemical looping reactor. The kinetics team was also responsible for the development and analysis of supported copper oxygen carrier material.

Sarofim, Adel; Lighty, JoAnn; Smith, Philip; Whitty, Kevin; Eyring, Edward; Sahir, Asad; Alvarez, Milo; Hradisky, Michael; Clayton, Chris; Konya, Gabor; Baracki, Richard; Kelly, Kerry

2014-03-01T23:59:59.000Z

35

A 25kWe low concentration methane catalytic combustion gas turbine prototype unit  

Science Journals Connector (OSTI)

Abstract Low concentration methane, emitted from various industries e.g. coal mines and landfills into atmosphere, is not only an important greenhouse gas, but also a wasted energy resource if not utilized. In the past decade, we have been developing a novel VAMCAT (ventilation air methane catalytic combustion gas turbine) technology. This turbine technology can be used to mitigate methane emissions for greenhouse gas reduction, and also to utilize the low concentration methane as an energy source. This paper presents our latest research results on the development and demonstration of a 25kWe lean burn catalytic combustion gas turbine prototype unit. Recent experimental results show that the unit can be operated with 0.8 vol% of methane in air, producing about 1921kWe of electricity output.

Shi Su; Xinxiang Yu

2014-01-01T23:59:59.000Z

36

System and method for reducing combustion dynamics in a combustor  

DOE Patents (OSTI)

A system for reducing combustion dynamics in a combustor includes an end cap having an upstream surface axially separated from a downstream surface, and tube bundles extend through the end cap. A diluent supply in fluid communication with the end cap provides diluent flow to the end cap. Diluent distributors circumferentially arranged inside at least one tube bundle extend downstream from the downstream surface and provide fluid communication for the diluent flow through the end cap. A method for reducing combustion dynamics in a combustor includes flowing fuel through tube bundles that extend axially through an end cap, flowing a diluent through diluent distributors into a combustion chamber, wherein the diluent distributors are circumferentially arranged inside at least one tube bundle and each diluent distributor extends downstream from the end cap, and forming a diluent barrier in the combustion chamber between at least one pair of adjacent tube bundles.

Uhm, Jong Ho; Johnson, Thomas Edward; Zuo, Baifang; York, William David

2013-08-20T23:59:59.000Z

37

NETL: News Release - Combustion Optimization Systems - Cleaner Coal Burning  

NLE Websites -- All DOE Office Websites (Extended Search)

"Combustion Optimization System" - Cleaner Coal Burning at Lower Costs "Combustion Optimization System" - Cleaner Coal Burning at Lower Costs DOE Joins with Sunflower Electric to Outfit Kansas Coal Plant with Lower Cost System to Cut Air Emissions FINNEY COUNTY, KS - A unique combination of high-tech combustion modifications and sophisticated control systems will be tested on a Kansas coal-fired power plant as part of the federal government's efforts to show how new technology can reduce air emissions and save costs for ratepayers. - Sunflower Electric's Holcomb Station - Sunflower Electric's Holcomb Station will be outfitted with a combination of innovative hardware and software to further reduce air emissions. - The U.S. Department of Energy and Sunflower Electric Power Corporation have signed an agreement to use the utility's Holcomb Station power plant in

38

Corrosion performance of materials for advanced combustion systems  

SciTech Connect

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at more elevated temperatures than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitates development/application of advanced ceramic materials in these designs. This report characterizes the chemistry of coal-fired combustion environments over the wide temperature range that is of interest in these systems and discusses preliminary experimental results on several materials (alumina, Hexoloy, SiC/SiC, SiC/Si{sub 3}N{sub 4}/Si{sub 3}N{sub 4}, ZIRCONIA, INCONEL 677 and 617) with potential for application in these systems.

Natesan, K.; Yanez-Herrero, M.; Fornasieri, C.

1993-12-01T23:59:59.000Z

39

Methanol vaporization and injection system for internal combustion engine  

SciTech Connect

An engine equipped with an alcohol vaporization injection system operates as a four stroke cycle diesel engine that transfers the heat of exiting exhaust gases and cylinder head walls to the fuel. The engine runs on alcohol. The alcohol becomes vaporized and its pressure is high enough so that when a valve is opened between the high pressure fuel line and the combustion chamber (when it is at the peak of its compression ratio) enough alcohol will enter the combustion chamber to allow proper combustion. The overall advantages to this type of alcohol vaporization injection system is that it adds relatively few new mechanisms to the spark ignition four cycle internal combustion engine to enable it to operate as a diesel engine with a high thermal efficiency. This alcohol injection system exploits the engine's need for greater volumes of alcohol caused by the alcohol's relatively low heat of combustion (When compared to gasoline) by using this greater volume of fuel to return greater quantities of heat back to the engine to a much greater degree than other fuels can.

Bayley, R.I.

1980-05-06T23:59:59.000Z

40

Evaluation of industrial combustion control systems. Final report  

SciTech Connect

This study evaluated O/sub 2/ and CO monitoring systems used for combustion controls to provide reliable data on their performance, operating range and accuracy. The study concentrated on three in-situ O/sub 2/ and two in-situ CO monitoring systems which are applicable to furnace and boiler controls. The project provides technical information for cost/benefit analysis of combustion control systems and to help expedite implementation of combustion control technology by industry. The evaluation of the stack gas monitoring systems was carried out for ranges of furnace operating parameters such as fuel to air mixture ratio, burner firing rate, heat extraction rate, fuel type, combustion air preheat temperature, and cyclic operating conditions, which are based on information gathered from typical operational practices of representative industrial furnaces and boilers. The experiments were performed in the NBS experimental furnace under both natural gas and No. 2 fuel oil fired conditions. An on-line gas sampling/analysis system was used as a reference system for comparative evaluation of the stack gas monitors. The system is set up to determine the level of CO, CO/sub 2/, O/sub 2/, NO/NO/sub x/ and total hydrocarbons in the stack gases.

Presser, C.; Semerjian, H.G.

1984-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts.

Huber, David John (North Canton, OH); Briesch, Michael Scot (Orlando, FL)

1998-01-01T23:59:59.000Z

42

Solid fuel combustion system for gas turbine engine  

DOE Patents (OSTI)

A solid fuel, pressurized fluidized bed combustion system for a gas turbine engine includes a carbonizer outside of the engine for gasifying coal to a low Btu fuel gas in a first fraction of compressor discharge, a pressurized fluidized bed outside of the engine for combusting the char residue from the carbonizer in a second fraction of compressor discharge to produce low temperature vitiated air, and a fuel-rich, fuel-lean staged topping combustor inside the engine in a compressed air plenum thereof. Diversion of less than 100% of compressor discharge outside the engine minimizes the expense of fabricating and maintaining conduits for transferring high pressure and high temperature gas and incorporation of the topping combustor in the compressed air plenum of the engine minimizes the expense of modifying otherwise conventional gas turbine engines for solid fuel, pressurized fluidized bed combustion.

Wilkes, Colin (Lebanon, IN); Mongia, Hukam C. (Carmel, IN)

1993-01-01T23:59:59.000Z

43

Advanced Burners and Combustion Controls for Industrial Heat Recovery Systems  

E-Print Network (OSTI)

ADVANCED BURNERS AND COMBUSTION CONTROLS FOR INDUSTRIAL HEAT RECOVERY SYSTEMS J.L.FERRI GTE PRODUCTS CORPORATION TOWANDA, PA ABSTRACT When recuperators are installed on indus trial furnaces, burners and ratio control systems must... recuperators by demonstrating their technical and economi cal feasibility in well monitored field installations (1). During the contract, it became evident to GTE that a systems approach (recuperator, burner, and con troIs) is necessary to be accepted...

Ferri, J. L.

44

Fuel-Flexible Combustion System for Refinery and Chemical Plant Process Heaters- Fact Sheet 2014  

Energy.gov (U.S. Department of Energy (DOE))

Fact sheet summarizing a project to develop and demonstrate a full-scale fuel handling and combustion system

45

Chemical Looping Combustion System-Fuel Reactor Modeling  

SciTech Connect

Chemical looping combustion (CLC) is a process in which an oxygen carrier is used for fuel combustion instead of air or pure oxygen as shown in the figure below. The combustion is split into air and fuel reactors where the oxidation of the oxygen carrier and the reduction of the oxidized metal occur respectively. The CLC system provides a sequestration-ready CO2 stream with no additional energy required for separation. This major advantage places combustion looping at the leading edge of a possible shift in strict control of CO2 emissions from power plants. Research in this novel technology has been focused in three distinct areas: techno-economic evaluations, integration of the system into power plant concepts, and experimental development of oxygen carrier metals such as Fe, Ni, Mn, Cu, and Ca. Our recent thorough literature review shows that multiphase fluid dynamics modeling for CLC is not available in the open literature. Here, we have modified the MFIX code to model fluid dynamic in the fuel reactor. A computer generated movie of our simulation shows bubble behavior consistent with experimental observations.

Gamwo, I.K.; Jung, J. (ANL); Anderson, R.R.; Soong, Y.

2007-04-01T23:59:59.000Z

46

Design, construction, operation and evaluation of a prototype culm combustion boiler/heater unit. Final design of prototype unit  

SciTech Connect

A final design of a prototype anthracite culm combustion boiler has been accomplished under Phase I of DOE Contract ET-78-C-01-3269. The prototype boiler has been designed to generate 20,000 pounds per hour of 150 psig saturated steam using low Btu (4000 Btu per pound) anthracite culm as a fuel. This boiler will be located at the industrial park of the Shamokin Area Industrial Corporation (SAIC). This program is directed at demonstrating the commercial viability of anthracite culm fueled FBC steam generation systems.

Not Available

1980-10-01T23:59:59.000Z

47

Process aspects in combustion and gasification Waste-to-Energy (WtE) units  

Science Journals Connector (OSTI)

Abstract The utilisation of energy in waste, Waste to Energy (WtE), has become increasingly important. Waste is a wide concept, and to focus, the feedstock dealt with here is mostly municipal solid waste. It is found that combustion in grate-fired furnaces is by far the most common mode of fuel conversion compared to fluidized beds and rotary furnaces. Combinations of pyrolysis in rotary furnace or gasification in fluidized or fixed bed with high-temperature combustion are applied particularly in Japan in systems whose purpose is to melt ashes and destroy dioxins. Recently, also in Japan more emphasis is put on WtE. In countries with high heat demand, WtE in the form of heat and power can be quite efficient even in simple grate-fired systems, whereas in warm regions only electricity is generated, and for this product the efficiency of boilers (the steam data) is limited by corrosion from the flue gas. However, combination of cleaned gas from gasification with combustion provides a means to enhance the efficiency of electricity production considerably. Finally, the impact of sorting on the properties of the waste to be fed to boilers or gasifiers is discussed. The description intends to be general, but examples are mostly taken from Europe.

Bo Leckner

2014-01-01T23:59:59.000Z

48

9 - Oxyfuel combustion systems and technology for carbon dioxide (CO2) capture in power plants  

Science Journals Connector (OSTI)

Abstract: Oxyfuel combustion uses pure oxygen instead of air to burn carbonaceous materials, resulting in a CO2 separation efficiency theoretically close to 100% should the fuel and oxygen be free of contaminants. This chapter examines several oxyfuel systems, considering two categories of power cycle those based on steam cycles and those based on gas cycles both of which generate oxygen using a cryogenic air separation unit. Also covered is the AZEP cycle, which belongs in the second category but which uses a ceramic membrane integrated into the system to separate oxygen from air. Oxy-combustion in IGCC plants and in gas turbine cycles integrating solid oxide fuel cells is also examined here as a low emission process. The technical issues and future potential for each option are discussed and reference is made to several pilot installations and ongoing R & D projects.

P. Mathieu

2010-01-01T23:59:59.000Z

49

United Solar Systems | Open Energy Information  

Open Energy Info (EERE)

United Solar Systems Place: Troy, MI References: United Solar Systems1 Information About Partnership with NREL Partnership with NREL Yes Partnership Type "CRADA" is not in the...

50

Chemical Kinetics of Hydrocarbon Ignition in Practical Combustion Systems  

SciTech Connect

Chemical kinetic factors of hydrocarbon oxidation are examined in a variety of ignition problems. Ignition is related to the presence of a dominant chain branching reaction mechanism that can drive a chemical system to completion in a very short period of time. Ignition in laboratory environments is studied for problems including shock tubes and rapid compression machines. Modeling of the laboratory systems are used to develop kinetic models that can be used to analyze ignition in practical systems. Two major chain branching regimes are identified, one consisting of high temperature ignition with a chain branching reaction mechanism based on the reaction between atomic hydrogen with molecular oxygen, and the second based on an intermediate temperature thermal decomposition of hydrogen peroxide. Kinetic models are then used to describe ignition in practical combustion environments, including detonations and pulse combustors for high temperature ignition, and engine knock and diesel ignition for intermediate temperature ignition. The final example of ignition in a practical environment is homogeneous charge, compression ignition (HCCI) which is shown to be a problem dominated by the kinetics intermediate temperature hydrocarbon ignition. Model results show why high hydrocarbon and CO emissions are inevitable in HCCI combustion. The conclusion of this study is that the kinetics of hydrocarbon ignition are actually quite simple, since only one or two elementary reactions are dominant. However, there are many combustion factors that can influence these two major reactions, and these are the features that vary from one practical system to another.

Westbrook, C.K.

2000-07-07T23:59:59.000Z

51

High-temperature corrosion in advanced combustion systems  

SciTech Connect

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high temperature furnaces and heat transfer surfaces capable of operation at much elevated temperatures than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitate development/application of advanced ceramic materials in these designs. The present paper characterizes the chemistry of coal-fired combustion environments over a wide temperature range of interest in these systems and discusses preliminary experimental results on several materials with potential for application in these systems. An experimental program has been initiated to evaluate materials for advanced combustion systems. Several candidate materials have been identified for evaluation. The candidates included advanced metallic alloys, monolithic ceramics, ceramic particulate/ceramic matrix composites, ceramic fiber/ceramic matrix composites, and ceramic whisker/ceramic matrix composites. The materials examined so far included nickel-base superalloys, alumina, stabilized zirconia, different types of silicon carbide, and silicon nitride. Coupon specimens of several of the materials have been tested in an air environment at 1000, 1200, and 1400{degree}C for 168 h. In addition, specimens were exposed to sodium-sulfate-containing salts at temperatures of 1000 and 1200{degree}C for 168 h. Extensive microstructural analyses were conducted on the exposed specimens to evaluate the corrosion performance of the materials for service in air and fireside environments of advanced coal-fired boilers. Additional tests are underway with several of the materials to evaluate their corrosion performance as a function of salt chemistry, alkali vapor concentration, gas chemistry, exposure temperature, and exposure time.

Natesan, K.; Yanez-Herrero, M.; Fornasieri, C.

1993-11-01T23:59:59.000Z

52

System issues and tradeoffs associated with syngas production and combustion  

SciTech Connect

The purpose of this article is to provide an overview of the basic technology of coal gasification for the production of syngas and the utilization of that syngas in power generation. The common gasifier types, fixed/moving bed, fluidized bed, entrained flow, and transport, are described, and accompanying typical product syngas compositions are shown for different coal ranks. Substantial variation in product gas composition is observed with changes in gasifier and coal feed type. Fuel contaminants such as sulfur, nitrogen, ash, as well as heavy metals such as mercury, arsenic, and selenium, can be removed to protect the environment and downstream processes. A variety of methods for syngas utilization for power production are discussed, including both present (gas turbine and internal combustion engines) and future technologies, including oxy-fuel, chemical looping, fuel cells, and hybrids. Goals to improve system efficiencies, further reduce NOx emissions, and provide options for CO2 sequestration require advancements in many aspects of IGCC plants, including the combustion system. Areas for improvements in combustion technology that could minimize these tradeoffs between cost, complexity, and performance are discussed.

Casleton, K.H.; Richards, G.A.; Breault, R.W.

2008-06-01T23:59:59.000Z

53

System Issues and Tradeoffs Associated with Syngas Production and Combustion  

SciTech Connect

The purpose of this article is to provide an overview of the basic technology of coal gasification for the production of syngas and the utilization of that syngas in power generation. The common gasifier types, fixed=moving bed, fluidized bed, entrained flow, and transport, are described, and accompanying typical product syngas compositions are shown for different coal ranks. Substantial variation in product gas composition is observed with changes in gasifier and coal feed type. Fuel contaminants such as sulfur, nitrogen, ash, as well as heavy metals such as mercury, arsenic, and selenium, can be removed to protect the environment and downstream processes. A variety of methods for syngas utilization for power production are discussed, including both present (gas turbine and internal combustion engines) and future technologies, including oxy-fuel, chemical looping, fuel cells, and hybrids. Goals to improve system efficiencies, further reduce NOx emissions, and provide options for CO2 sequestration require advancements in many aspects of IGCC plants, including the combustion system. Areas for improvements in combustion technology that could minimize these tradeoffs between cost, complexity, and performance are discussed.

Kent H. Casleton; Ronald W. Breault; George A. Richards

2008-06-01T23:59:59.000Z

54

Development of Computation Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Computation Capabilities Computation Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems Background Staged combustion is a method of reducing nitrogen oxide (NO x ) emissions in boilers by controlling the combustion mixture of air and fuel. Its process conditions are particularly corrosive to lower furnace walls. Superheaters and/or reheaters are often employed in the upper furnace to reuse hot combustion gasses to further raise the

55

Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System  

SciTech Connect

On February 14, 2002, President Bush announced the Clear Skies Initiative, a legislative proposal to control the emissions of nitrogen oxides (NO{sub x}), sulfur dioxide (SO{sub 2}), and mercury from power plants. In response to this initiative, the National Energy Technology Laboratory organized a Combustion Technology University Alliance and hosted a Solid Fuel Combustion Technology Alliance Workshop. The workshop identified multi-pollutant control; improved sorbents and catalysts; mercury monitoring and capture; and improved understanding of the underlying reaction chemistry occurring during combustion as the most pressing research needs related to controlling environmental emissions from fossil-fueled power plants. The Environmental Control Technology Laboratory will help meet these challenges and offer solutions for problems associated with emissions from fossil-fueled power plants. The goal of this project was to develop the capability and technology database needed to support municipal, regional, and national electric power generating facilities to improve the efficiency of operation and solve operational and environmental problems. In order to effectively provide the scientific data and the methodologies required to address these issues, the project included the following aspects: (1) Establishing an Environmental Control Technology Laboratory using a laboratory-scale, simulated fluidized-bed combustion (FBC) system; (2) Designing, constructing, and operating a bench-scale (0.6 MW{sub th}), circulating fluidized-bed combustion (CFBC) system as the main component of the Environmental Control Technology Laboratory; (3) Developing a combustion technology for co-firing municipal solid waste (MSW), agricultural waste, and refuse-derived fuel (RDF) with high sulfur coals; (4) Developing a control strategy for gaseous emissions, including NO{sub x}, SO{sub 2}, organic compounds, and heavy metals; and (5) Developing new mercury capturing sorbents and new particulate filtration technologies. Major tasks during this period of the funded project's timeframe included: (1) Conducting pretests on a laboratory-scale simulated FBC system; (2) Completing detailed design of the bench-scale CFBC system; (3) Contracting potential bidders to fabricate of the component parts of CFBC system; (4) Assembling CFBC parts and integrating system; (5) Resolving problems identified during pretests; (6) Testing with available Powder River Basin (PRB) coal and co-firing of PRB coal with first wood pallet and then chicken wastes; and (7) Tuning of CFBC load. Following construction system and start-up of this 0.6 MW CFBC system, a variety of combustion tests using a wide range of fuels (high-sulfur coals, low-rank coals, MSW, agricultural waste, and RDF) under varying conditions were performed to analyze and monitor air pollutant emissions. Data for atmospheric pollutants and the methodologies required to reduce pollutant emissions were provided. Integration with a selective catalytic reduction (SCR) slipstream unit did mimic the effect of flue gas composition, including trace metals, on the performance of the SCR catalyst to be investigated. In addition, the following activities were also conducted: (1) Developed advanced mercury oxidant and adsorption additives; (2) Performed laboratory-scale tests on oxygen-fuel combustion and chemical looping combustion; and (3) Conducted statistical analysis of mercury emissions in a full-scale CFBC system.

Wei-Ping Pan; Yan Cao; John Smith

2008-05-31T23:59:59.000Z

56

Influence of Limestone Addition in a 10 kWth Chemical-Looping Combustion Unit Operated with Petcoke  

Science Journals Connector (OSTI)

Influence of Limestone Addition in a 10 kWth Chemical-Looping Combustion Unit Operated with Petcoke ... The fuel fed was a petcoke, and the gasifying agent was steam. ... (14) To date, continuous testing with ilmenite as an oxygen carrier has been performed with a Mexican petcoke,(15, 16) South African coal,(17) and Colombian bituminous coal. ...

Ana Cuadrat; Carl Linderholm; Alberto Abad; Anders Lyngfelt; Juan Adnez

2011-08-29T23:59:59.000Z

57

Combustion chemical vapor deposited coatings for thermal barrier coating systems  

SciTech Connect

The new deposition process, combustion chemical vapor deposition, shows a great deal of promise in the area of thermal barrier coating systems. This technique produces dense, adherent coatings, and does not require a reaction chamber. Coatings can therefore be applied in the open atmosphere. The process is potentially suitable for producing high quality CVD coatings for use as interlayers between the bond coat and thermal barrier coating, and/or as overlayers, on top of thermal barrier coatings. In this report, the evaluation of alumina and ceria coatings on a nickel-chromium alloy is described.

Hampikian, J.M.; Carter, W.B. [Georgia Institute of Technology, Atlanta, GA (United States). School of Materials Science and Engineering

1995-12-31T23:59:59.000Z

58

MULTIOBJECTIVE OPTIMIZATION POWER GENERATION SYSTEMS INVOLVING CHEMICAL LOOPING COMBUSTION  

SciTech Connect

Integrated Gasification Combined Cycle (IGCC) system using coal gasification is an important approach for future energy options. This work focuses on understading the system operation and optimizing it in the presence of uncertain operating conditions using ASPEN Plus and CAPE-OPEN compliant stochastic simulation and multiobjective optimization capabilities developed by Vishwamitra Research Institute. The feasible operating surface for the IGCC system is generated and deterministic multiobjective optimization is performed. Since the feasible operating space is highly non-convex, heuristics based techniques that do not require gradient information are used to generate the Pareto surface. Accurate CFD models are simultaneously developed for the gasifier and chemical looping combustion system to characterize and quantify the process uncertainty in the ASPEN model.

Juan M. Salazar; Urmila M. Diwekar; Stephen E. Zitney

2009-01-01T23:59:59.000Z

59

Advanced Combustion Systems Project Information | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

FC26-07NT43088 Recovery Act: Oxy-combustion: Oxygen Transport Membrane Development Praxair, Inc. Completed Projects FE0009686 High Efficiency Molten-Bed Oxy-Coal Combustion...

60

Fast computation of multi-scale combustion systems  

Science Journals Connector (OSTI)

...consider a detailed combustion mechanism for air...The mean specific heat (under constant...being the specific heat of species i (mass...with a detailed combustion mechanism, where...between retrieved data and detailed solution...combustion mechanism for hydrocarbons. Moreover, on...

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Exhaust gas recirculation system for an internal combustion engine  

DOE Patents (OSTI)

An exhaust gas recirculation system for an internal combustion engine comprises an exhaust driven turbocharger having a low pressure turbine outlet in fluid communication with an exhaust gas conduit. The turbocharger also includes a low pressure compressor intake and a high pressure compressor outlet in communication with an intake air conduit. An exhaust gas recirculation conduit fluidly communicates with the exhaust gas conduit to divert a portion of exhaust gas to a low pressure exhaust gas recirculation branch extending between the exhaust gas recirculation conduit and an engine intake system for delivery of exhaust gas thereto. A high pressure exhaust gas recirculation branch extends between the exhaust gas recirculation conduit and the compressor intake and delivers exhaust gas to the compressor for mixing with a compressed intake charge for delivery to the intake system.

Wu, Ko-Jen

2013-05-21T23:59:59.000Z

62

Assessment of Literature and Simulation Software Related to Combustion Appliance Venting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Assessment of Literature Related to Assessment of Literature Related to Combustion Appliance Venting Systems V.H. Rapp, B.C. Singer, J.C. Stratton, C.P. Wray Environmental Energy Technologies Division June 2012 LBNL-5798E 2 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned

63

Slag monitoring system for combustion chambers of steam boilers  

SciTech Connect

The computer-based boiler performance system presented in this article has been developed to provide a direct and quantitative assessment of furnace and convective surface cleanliness. Temperature, pressure, and flow measurements and gas analysis data are used to perform heat transfer analysis in the boiler furnace and evaporator. Power boiler efficiency is calculated using an indirect method. The on-line calculation of the exit flue gas temperature in a combustion chamber allows for an on-line heat flow rate determination, which is transferred to the boiler evaporator. Based on the energy balance for the boiler evaporator, the superheated steam mass flow rate is calculated taking into the account water flow rate in attemperators. Comparing the calculated and the measured superheated steam mass flow rate, the effectiveness of the combustion chamber water walls is determined in an on-line mode. Soot-blower sequencing can be optimized based on actual cleaning requirements rather than on fixed time cycles contributing to lowering of the medium usage in soot blowers and increasing of the water-wall lifetime.

Taler, J.; Taler, D. [Cracow University of Technology, Krakow (Poland)

2009-07-01T23:59:59.000Z

64

AMO Fuel and Feedstock Flexibility: Fuel-Flexible Combustion System for Refinery and Chemical Plant Process Heaters  

Energy.gov (U.S. Department of Energy (DOE))

Fact sheet summarizing a project to develop and demonstrate a full-scale fuel handling and combustion system

65

Low emission U-fired boiler combustion system  

DOE Patents (OSTI)

At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NO.sub.X production and for maintaining a predetermined operating temperature to liquefy ash within the combustion chamber. The combustion chamber includes a slag drain for removing slag from the combustion chamber. A slag screen is positioned in a generally U-shaped furnace flow pattern. The slag screen is positioned between the combustion chamber and a radiant furnace. The radiant furnace includes a reburning zone for in-furnace No.sub.X reduction. The reburning zone extends between a reburning fuel injection source and at least one overfire air injection port for injecting air.

Ake, Terence (North Brookfield, MA); Beittel, Roderick (Worcester, MA); Lisauskas, Robert A. (Shrewsbury, MA); Reicker, Eric (Barre, MA)

2000-01-01T23:59:59.000Z

66

Flexible engine control system for the development of innovative combustion processes  

Science Journals Connector (OSTI)

Daimler, IAV and Etas present a flexible engine control system for the development of innovative combustion processes. The functionality of conventional indication systems has ... important step in forwarding the...

Dr. Josef Steuer; Dr. Michael Mladek; Christian Dengler

2009-09-01T23:59:59.000Z

67

Development of Computational Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems  

SciTech Connect

A comprehensive corrosion research project consisting of pilot-scale combustion testing and long-term laboratory corrosion study has been successfully performed. A pilot-scale combustion facility available at Brigham Young University was selected and modified to enable burning of pulverized coals under the operating conditions typical for advanced coal-fired utility boilers. Eight United States (U.S.) coals were selected for this investigation, with the test conditions for all coals set to have the same heat input to the combustor. In addition, the air/fuel stoichiometric ratio was controlled so that staged combustion was established, with the stoichiometric ratio maintained at 0.85 in the burner zone and 1.15 in the burnout zone. The burner zone represented the lower furnace of utility boilers, while the burnout zone mimicked the upper furnace areas adjacent to the superheaters and reheaters. From this staged combustion, approximately 3% excess oxygen was attained in the combustion gas at the furnace outlet. During each of the pilot-scale combustion tests, extensive online measurements of the flue gas compositions were performed. In addition, deposit samples were collected at the same location for chemical analyses. Such extensive gas and deposit analyses enabled detailed characterization of the actual combustion environments existing at the lower furnace walls under reducing conditions and those adjacent to the superheaters and reheaters under oxidizing conditions in advanced U.S. coal-fired utility boilers. The gas and deposit compositions were then carefully simulated in a series of 1000-hour laboratory corrosion tests, in which the corrosion performances of different commercial candidate alloys and weld overlays were evaluated at various temperatures for advanced boiler systems. Results of this laboratory study led to significant improvement in understanding of the corrosion mechanisms operating on the furnace walls as well as superheaters and reheaters in coal-fired boilers resulting from the coexistence of sulfur and chlorine in the fuel. A new corrosion mechanism, i.e., Active Sulfidation Corrosion Mechanism, has been proposed to account for the accelerated corrosion wastage observed on the furnace walls of utility boilers burning coals containing sulfur and chlorine. In addition, a second corrosion mechanism, i.e., Active Sulfide-to-Oxide Corrosion Mechanism, has been identified to account for the rapid corrosion attack on superheaters and reheaters. Both of the newly discovered corrosion mechanisms involve the formation of iron chloride (FeCl2) vapor from iron sulfide (FeS) and HCl, followed by the decomposition of FeCl2 via self-sustaining cycling reactions. For higher alloys containing sufficient chromium, the attack on superheaters and reheaters is dominated by Hot Corrosion in the presence of a fused salt. Furthermore, two stages of the hot corrosion mechanism have been identified and characterized in detail. The initiation of hot corrosion attack induced by molten sulfate leads to Stage 1 acidic fluxing and re-precipitation of the protective scale formed initially on the deposit-covered alloy surfaces. Once the protective scale is penetrated, Stage 2 Hot Corrosion is initiated, which is dominated by basic fluxing and re-precipitation of the scale in the fused salt. Based on the extensive corrosion information generated from this project, corrosion modeling was performed using non-linear regression analysis. As a result of the modeling efforts, two predictive equations have been formulated, one for furnace walls and the other for superheaters and reheaters. These first-of-the-kind equations can be used to estimate the corrosion rates of boiler tubes based on coal chemistry, alloy compositions, and boiler operating conditions for advanced boiler systems.

Kung, Steven; Rapp, Robert

2014-08-31T23:59:59.000Z

68

Development of a topping combustor for advanced concept pressurized fluidized-bed combustion systems  

SciTech Connect

A project team consisting of Foster Wheeler Development Corporation, Westinghouse Electric Corporation, Gilbert/Commonwealth and the Institute of Gas Technology, are developing a Second Generation Pressurized Fluidized Bed System. Foster Wheeler is developing a carbonizer (a partial gasifier) and a pressurized fluidized bed combustor. Both these units operate at a nominal 1600{degrees}F (870{degrees}C) for optimal sulfur capture. Since this temperature is well below the current combustion turbine combustor outlet operating temperature of 2350{degrees}F (1290{degrees}C), to reach commercialization, a topping combustor and hot gas cleanup (HGCU) equipment must be developed. Westinghouse`s efforts are focused on the development of the high temperature gas cleanup equipment and the topping combustor. This paper concentrates on the design and test of the topping combustor, which must use a low heating value syngas from the carbonizer at approximately 1600{degrees}F and 150 to 210 psi.

Domeracki, W.F.; Dowdy, T.E.; Bachovchin, D.

1995-11-01T23:59:59.000Z

69

Detection and control of combustion instability based on the concept of dynamical system theory  

Science Journals Connector (OSTI)

We propose an online method of detecting combustion instability based on the concept of dynamical system theory, including the characterization of the dynamic behavior of combustion instability. As an important case study relevant to combustion instability encountered in fundamental and practical combustion systems, we deal with the combustion dynamics close to lean blowout (LBO) in a premixed gas-turbine model combustor. The relatively regular pressure fluctuations generated by thermoacoustic oscillations transit to low-dimensional intermittent chaos owing to the intermittent appearance of burst with decreasing equivalence ratio. The translation error, which is characterized by quantifying the degree of parallelism of trajectories in the phase space, can be used as a control variable to prevent LBO.

Hiroshi Gotoda; Yuta Shinoda; Masaki Kobayashi; Yuta Okuno; Shigeru Tachibana

2014-02-11T23:59:59.000Z

70

Development of a coal combustion product (CCP) database system. Final report  

SciTech Connect

Nearly 90 million tons of coal combustion products (CCPs) are produced annually in the United States. The value of CCPs is well established by research and commercial practice; however, only 25% of these products are utilized. The objective of this project was to develop a computer program containing a database of advanced analytical and comprehensive engineering information on CCPs, accessible through a user-friendly interface. Version 1.0 of the ACAA CCP Data Manager was specifically designed to: perform multiple-criteria queries to produce a set of sample for in-depth study; view and print standard test reports, such as C618 reports; compare and contrast analytical results in graphs and tables; graph utilization information by application and region; and save data to a file for use in other computer applications, such as spreadsheet programs. The program was designed to contain descriptive information about a given CCP sample, including sample formation data (material type, sample location, fuel type, collection device etc.), combustion system design data (steam generator type, furnace type, SO{sub 2} and NO{sub x} control information, ash-handling configurations), test data (chemical, mineralogical, and physical characterization data), and utilization potential of the CCP. The location of the plant is identified by region. The database has been initially populated with information on over 800 CCP samples, taken from the Coal Ash Resources Research Consortium (CARRC). An installation package and user`s guide was developed for unlimited distribution by the American Coal Ash Association (ACAA).

O`Leary, E.M.; Pflughoeft-Hassett, D.F.

1997-09-01T23:59:59.000Z

71

Advanced Materials for Mercury 50 Gas Turbine Combustion System  

SciTech Connect

Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Turbine Systems program (DOE contract number DE-FC21-95MC31173). As a generator set, the Mercury 50 is used for distributed power and combined heat and power generation and is designed to achieve 38.5% electrical efficiency, reduced cost of electricity, and single digit emissions. The original program goal was 20,000 hours life, however, this goal was increased to be consistent with Solar's standard 30,000 hour time before overhaul for production engines. Through changes to the combustor design to incorporate effusion cooling in the Generation 3 Mercury 50 engine, which resulted in a drop in the combustor wall temperature, the current standard thermal barrier coated liner was predicted to have 18,000 hours life. With the addition of the advanced materials technology being evaluated under this program, the combustor life is predicted to be over 30,000 hours. The ultimate goal of the program was to demonstrate a fully integrated Mercury 50 combustion system, modified with advanced materials technologies, at a host site for a minimum of 4,000 hours. Solar was the Prime Contractor on the program team, which includes participation of other gas turbine manufacturers, various advanced material and coating suppliers, nationally recognized test laboratories, and multiple industrial end-user field demonstration sites. The program focused on a dual path development route to define an optimum mix of technologies for the Mercury 50 and future gas turbine products. For liner and injector development, multiple concepts including high thermal resistance thermal barrier coatings (TBC), oxide dispersion strengthened (ODS) alloys, continuous fiber ceramic composites (CFCC), and monolithic ceramics were evaluated before down-selection to the most promising candidate materials for field evaluation. Preliminary, component and sub-scale testing was conducted to determine material properties and demonstrate proof-of-concept. Full-scale rig and engine testing was used to validated engine performance prior to field evaluation at a Qualcomm Inc. cogeneration site located in San Diego, California. To ensure that the CFCC liners with the EBC proposed under this program would meet the target life, field evaluations of ceramic matrix composite liners in Centaur{reg_sign} 50 gas turbine engines, which had previously been conducted under the DOE sponsored Ceramic Stationary Gas Turbine program (DE-AC02-92CE40960), was continued under this program at commercial end-user sites under Program Subtask 1A - Extended CFCC Materials Durability Testing. The goal of these field demonstrations was to demonstrate significant component life, with milestones of 20,000 and 30,000 hours. Solar personnel monitor the condition of the liners at the field demonstration sites through periodic borescope inspections and emissions measurements. This program was highly successful at evaluating advanced materials and down-selecting promising solutions for use in gas turbine combustions systems. The addition of the advanced materials technology has enabled the predicted life of the Mercury 50 combustion system to reach 30,000 hours, which is Solar's typical time before overhaul for production engines. In particular, a 40 mil thick advanced Thermal Barrier Coating (TBC) system was selected over various other TBC systems, ODS liners and CFCC liners for the 4,000-hour field evaluation under the program. This advanced TBC is now production bill-of-material at various thicknesses up to 40 mils for all of Solar's advanced backside-cooled combustor liners (Centaur 50, Taurus 60, Mars 100, Taurus 70,

Price, Jeffrey

2008-09-30T23:59:59.000Z

72

Upgrading of low-rank coals for conventional and advanced combustion systems  

SciTech Connect

Low-rank coals, subbituminous, lignitic, and brown coals, have a ubiquitous presence in the world, being found in all continents. Close to half of the world`s estimated coal resources are low- rank coals. Many countries have no alternative economic source of energy. In the lower 48 states of the United States, there are 220 billion tons of economically recoverable reserves of lignite and subbituminous coal. Add to this quantity 5 trillion tons of predominantly subbituminous coal in Alaska, and the combined amount represents the largest supply of the lowest-cost fuels available for generating electric power in the United States. However, to use these coals cost-effectively and in an environmentally acceptable way, it is imperative that their properties and combustion/gasification behavior be well understood. The Energy and Environmental Research Center (EERC) takes a cradle-to-grave approach (i.e., mining, precleaning, combustion/gasification, postcleaning, and reuse and disposal of residues) for all aspects of coal processing and utilization. The environmental impact of these activities must be matched with the appropriate technologies. Experience over many years has shown that variations in coal and ash properties have a critical impact on design, reliability and efficiency of operation, and environmental compliance when low-rank coals are burned in conventional systems. This chapter reviews the significant technical issues of beneficiation, which includes reduction in moisture as well as ash (including sulfur), in relation to low-rank coal properties and their impact on conventional and advanced power systems. Finally, the development and utilization of low-rank coal resources are briefly discussed in view of policy, economic, and strategic issues.

Young, B.C.; Musich, M.A.; Jones, M.L.

1993-12-31T23:59:59.000Z

73

Materials Challenges for Advanced Combustion and Gasification Fossil Energy Systems  

Science Journals Connector (OSTI)

Through gasification, carbonaceous feedstock such as coal, petroleum coke (petcoke), and biomass is converted into synthesis...1218] through, e.g., combustion or electrochemical conversion in fuel cells. Syngas ...

S. Sridhar; P. Rozzelle; B. Morreale

2011-04-01T23:59:59.000Z

74

Combustion Technology Development for an Advanced Glass Melting System  

E-Print Network (OSTI)

Concept feasibility of an innovative technology for glass production has recently been demonstrated. It is based on suspension heating of the glass-forming batch minerals while entrained in a combustion flow of preheated air and natural gas...

Stickler, D. B.; Westra, L.; Woodroffe, J.; Jeong, K. M.; Donaldson, L. W.

75

Portable brine evaporator unit, process, and system  

DOE Patents (OSTI)

The present invention discloses a comprehensive, efficient, and cost effective portable evaporator unit, method, and system for the treatment of brine. The evaporator unit, method, and system require a pretreatment process that removes heavy metals, crude oil, and other contaminates in preparation for the evaporator unit. The pretreatment and the evaporator unit, method, and system process metals and brine at the site where they are generated (the well site). Thus, saving significant money to producers who can avoid present and future increases in transportation costs.

Hart, Paul John (Indiana, PA); Miller, Bruce G. (State College, PA); Wincek, Ronald T. (State College, PA); Decker, Glenn E. (Bellefonte, PA); Johnson, David K. (Port Matilda, PA)

2009-04-07T23:59:59.000Z

76

Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures  

SciTech Connect

The overall objective of this project is the development of a mechanical rotary-disk feeder, known as the Stamet Posimetric High Pressure Solids Feeder System, to feed dry granular coal continuously and controllably into pressurized environments of up to 35 kg/cm{sup 2} (500 psi). This was to be accomplished in two phases. The first task was to review materials handling experience in pressurized operations as it related to the target pressures for this project, and review existing coal preparation processes and specifications currently used in advanced combustion systems. Samples of existing fuel materials were obtained and tested to evaluate flow, sealing and friction properties. This provided input data for use in the design of the Stamet Feeders for the project, and ensured that the material specification used met the requirements of advanced combustion & gasification systems. Ultimately, Powder River Basin coal provided by the PSDF facility in Wilsonville, AL was used as the basis for the feeder design and test program. Based on the material property information, a Phase 1 feeder system was designed and built to accomplish feeding the coal to an intermediate pressure up to 21 kg/cm{sup 2} (300 psi) at feed rates of approximately 100 kilograms (220lbs) per hour. The pump & motor system was installed in a custom built test rig comprising an inlet vessel containing an active live-wall hopper mounted in a support frame, transition into the pump inlet, transition from pump outlet and a receiver vessel containing a receiver drum supported on weigh cells. All pressure containment on the rig was rated for the final pressure requirement of 35 kg/cm{sup 2} (500psi). A program of testing and modification was carried out in Stamet's facility in CA, culminating in successful feeding of coal into the Phase 1 target of 21 kg/cm{sup 2} (300psi) gas pressure in December 2003. Further testing was carried out at CQ Inc's facility in PA, providing longer run times and experience of handling and feeding the coal in winter conditions. Based on the data developed through the testing of the Phase I unit, a Phase II system was designed for feeding coal into pressures of up to 35 kg/cm{sup 2} (500 psi). A further program of testing and modification was then carried out in Stamet's facility, with the target pressure being achieved in January 2005. Repeated runs at pressure were achieved, and optimization of the machine resulted in power reductions of 60% from the first successful pressure runs. General design layout of a commercial-scale unit was conducted, and preliminary cost estimates for a commercial unit obtained.

Derek L. Aldred; Timothy Saunders

2005-07-01T23:59:59.000Z

77

Total Petroleum Systems and Assessment Units (AU)  

E-Print Network (OSTI)

Total Petroleum Systems (TPS) and Assessment Units (AU) Field type Surface water Groundwater X X X X X X X X AU 00000003 Oil/ Gas X X X X X X X X Total X X X X X X X Total Petroleum Systems (TPS) and Assessment Units (AU) Field type Total undiscovered petroleum (MMBO or BCFG) Water per oil

Torgersen, Christian

78

Prediction of ash deposition in pulverized coal combustion systems  

SciTech Connect

A predictive scheme based on CCSEM flyash data and Computational Fluid Dynamics (CFD) has been developed to study the slagging propensity of coals. The model has been applied to predict the deposition potential of three UK coals; Bentinck, Daw Mill and Silverdale, in a pilot scale single burner ash deposition test facility and an utility size multi-burner front wall-fired furnace. The project is part of a collaborative research program sponsored by the UK Department of Trade and Industry and involved various industrial organizations and universities. The objective of the project is to understand the fundamental aspects of slagging in pulverized coal-fired combustion systems. This paper is a sequel to the poster paper entitled: The Prediction of Ash Deposition in a Coal Fired Axi-symmetric Furnace, presented in the last Engineering Foundation Conference. The present model predicts the relative slagging propensity of the three coals correctly. The predicted deposition patterns are also consistent with the observations. The results from the model indicate a preferential deposition of iron during the initial stage of ash deposition. The average compositions of the deposits become closer to that of the bulk ash when the accumulation of ash deposits is taken into account.

Lee, F.C.C.; Riley, G.S. [National Power PLC, Swindon (United Kingdom); Lockwood, F.C. [Imperial Coll. of Science, Technology and Medicine, London (United Kingdom). Dept. of Mechanical Engineering

1996-12-31T23:59:59.000Z

79

Onsite Wastewater Treatment Systems: Aerobic Treatment Unit  

E-Print Network (OSTI)

wastewater treatment systems use. They remove 85 to 98 percent of the organic matter and solids from the wastewater, producing effluent as clean as that from munici- pal wastewater treatment plants, and cleaner than that from conventional septic tanks.... Onsite wastewater treatment systems Single-compartment trash tank Chlorinator Aerobic treatment unit Spray heads Pump tank Bruce Lesikar Professor and Extension Agricultural Engineer The Texas A&M System Aerobic treatment units, which are certified...

Lesikar, Bruce J.

2008-10-31T23:59:59.000Z

80

Ultrafast Structural Dynamics in Combustion Relevant Model Systems  

SciTech Connect

The research project explored the time resolved structural dynamics of important model reaction system using an array of novel methods that were developed specifically for this purpose. They include time resolved electron diffraction, time resolved relativistic electron diffraction, and time resolved Rydberg fingerprint spectroscopy. Toward the end of the funding period, we also developed time-resolved x-ray diffraction, which uses ultrafast x-ray pulses at LCLS. Those experiments are just now blossoming, as the funding period expired. In the following, the time resolved Rydberg Fingerprint Spectroscopy is discussed in some detail, as it has been a very productive method. The binding energy of an electron in a Rydberg state, that is, the energy difference between the Rydberg level and the ground state of the molecular ion, has been found to be a uniquely powerful tool to characterize the molecular structure. To rationalize the structure sensitivity we invoke a picture from electron diffraction: when it passes the molecular ion core, the Rydberg electron experiences a phase shift compared to an electron in a hydrogen atom. This phase shift requires an adjustment of the binding energy of the electron, which is measurable. As in electron diffraction, the phase shift depends on the molecular, geometrical structure, so that a measurement of the electron binding energy can be interpreted as a measurement of the molecules structure. Building on this insight, we have developed a structurally sensitive spectroscopy: the molecule is first elevated to the Rydberg state, and the binding energy is then measured using photoelectron spectroscopy. The molecules structure is read out as the binding energy spectrum. Since the photoionization can be done with ultrafast laser pulses, the technique is inherently capable of a time resolution in the femtosecond regime. For the purpose of identifying the structures of molecules during chemical reactions, and for the analysis of molecular species in the hot environments of combustion processes, there are several features that make the Rydberg ionization spectroscopy uniquely useful. First, the Rydberg electrons orbit is quite large and covers the entire molecule for most molecular structures of combustion interest. Secondly, the ionization does not change vibrational quantum numbers, so that even complicated and large molecules can be observed with fairly well resolved spectra. In fact, the spectroscopy is blind to vibrational excitation of the molecule. This has the interesting consequence for the study of chemical dynamics, where the molecules are invariably very energetic, that the molecular structures are observed unobstructed by the vibrational congestion that dominates other spectroscopies. This implies also that, as a tool to probe the time-dependent structural dynamics of chemically interesting molecules, Rydberg spectroscopy may well be better suited than electron or x-ray diffraction. With recent progress in calculating Rydberg binding energy spectra, we are approaching the point where the method can be evolved into a structure determination method. To implement the Rydberg ionization spectroscopy we use a molecular beam based, time-resolved pump-probe multi-photon ionization/photoelectron scheme in which a first laser pulse excites the molecule to a Rydberg state, and a probe pulse ionizes the molecule. A time-of-flight detector measures the kinetic energy spectrum of the photoelectrons. The photoelectron spectrum directly provides the binding energy of the electron, and thereby reveals the molecules time-dependent structural fingerprint. Only the duration of the laser pulses limits the time resolution. With a new laser system, we have now reached time resolutions better than 100 fs, although very deep UV wavelengths (down to 190 nm) have slightly longer instrument functions. The structural dynamics of molecules in Rydberg-excited states is obtained by delaying the probe ionization photon from the pump photon; the structural dynamics of molecules in their ground state or e

Weber, Peter M. [Brown University

2014-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
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81

INFORMATION SYSTEMS UNIT Topic Policies  

E-Print Network (OSTI)

, but not limited to: � Damaging hardware or corrupting software; � Attempting to `hack' into systems; � Using

82

Transformations of inorganic coal constituents in combustion systems  

SciTech Connect

Results from an experimental investigation of the mechanisms governing the ash aerosol size segregated composition resulting from the combustion of pulverized coal in a laboratory scale down-flow combustor are described. The results of modeling activities used to interpret the results of the experiments conducted under his subtask are also described in this section. Although results from the entire program are included, Phase II studies which emphasized: (1) alkali behavior, including a study of the interrelationship between potassium vaporization and sodium vaporization; and (2) iron behavior, including an examination of the extent of iron-aluminosilicate interactions, are highlighted. Idealized combustion determination of ash particle formation and surface stickiness are also described.

Helble, J.J. (ed.); Srinivasachar, S.; Wilemski, G.; Boni, A.A. (PSI Technology Co., Andover, MA (United States)); Kang, Shin-Gyoo; Sarofim, A.F.; Graham, K.A.; Beer, J.M. (Massachusetts Inst. of Tech., Cambridge, MA (United States)); Peterson, T.W.; Wendt, J.O.L.; Gallagher, N.B.; Bool, L. (Arizona Univ., Tucson, AZ (United States)); Huggins, F.E.; Huffman, G.P.; Shah, N.; Shah, A. (Kentucky Univ., Lexingt

1992-11-01T23:59:59.000Z

83

Advanced coal-fueled gas turbine systems: Subscale combustion testing. Topical report, Task 3.1  

SciTech Connect

This is the final report on the Subscale Combustor Testing performed at Textron Defense Systems` (TDS) Haverhill Combustion Laboratories for the Advanced Coal-Fueled Gas Turbine System Program of the Westinghouse Electric Corp. This program was initiated by the Department of Energy in 1986 as an R&D effort to establish the technology base for the commercial application of direct coal-fired gas turbines. The combustion system under consideration incorporates a modular staged, rich-lean-quench, Toroidal Vortex Slogging Combustor (TVC) concept. Fuel-rich conditions in the first stage inhibit NO{sub x} formation from fuel-bound nitrogen; molten coal ash and sulfated sorbent are removed, tapped and quenched from the combustion gases by inertial separation in the second stage. Final oxidation of the fuel-rich gases, and dilution to achieve the desired turbine inlet conditions are accomplished in the third stage, which is maintained sufficiently lean so that here, too, NO{sub x} formation is inhibited. The primary objective of this work was to verify the feasibility of a direct coal-fueled combustion system for combustion turbine applications. This has been accomplished by the design, fabrication, testing and operation of a subscale development-type coal-fired combustor. Because this was a complete departure from present-day turbine combustors and fuels, it was considered necessary to make a thorough evaluation of this design, and its operation in subscale, before applying it in commercial combustion turbine power systems.

Not Available

1993-05-01T23:59:59.000Z

84

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect

Application and testing of the new combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this 12th quarterly report. In this quarter, continued validation and testing of the combustion LES code was performed for the DOE-SimVal combustor. Also, beta testing by six consortium members was performed for various burner and combustor configurations. A list of suggested code improvements by the beta testers was itemized. Work will continue in FY04. A conditional modification to the contract will be granted. The additional work will focus on modeling/analyzing the SimVal experiments.

Clifford Smith

2003-09-01T23:59:59.000Z

85

Computational fluid dynamics combustion modelling--A comparison of secondary air system designs  

SciTech Connect

A newly developed computer simulation of the combustion process in a kraft recovery furnace uses computational fluid dynamics to model the processes of mass, momentum, and energy transport. This paper describes two models and a presentation of the flow fields obtained. The results predict a dramatic improvement in combustion behavior using a refined secondary air system with reduction in particulate carryover, enhanced operating temperatures, more uniform gas flow, and less carbon monoxide at the furnace exit.

Jones, A.K. (ABB Combustion Engineering Systems, Ottawa, Ontario (Canada)); Chapman, P.J. (ABB Combustion Engineering Systems, Windsor, CT (United States))

1993-07-01T23:59:59.000Z

86

Oxygen enriched combustion system performance study. Phase 2: 100 percent oxygen enriched combustion in regenerative glass melters, Final report  

SciTech Connect

The field test project described in this report was conducted to evaluate the energy and environmental performance of 100% oxygen enriched combustion (100% OEC) in regenerative glass melters. Additional objectives were to determine other impacts of 100% OEC on melter operation and glass quality, and to verify on a commercial scale that an on-site Pressure Swing Adsorption oxygen plant can reliably supply oxygen for glass melting with low electrical power consumption. The tests constituted Phase 2 of a cooperative project between the United States Department of Energy, and Praxair, Inc. Phase 1 of the project involved market and technical feasibility assessments of oxygen enriched combustion for a range of high temperature industrial heating applications. An assessment of oxygen supply options for these applications was also performed during Phase 1, which included performance evaluation of a pilot scale 1 ton per day PSA oxygen plant. Two regenerative container glass melters were converted to 100% OEC operation and served as host sites for Phase 2. A 75 ton per day end-fired melter at Carr-Lowrey Glass Company in Baltimore, Maryland, was temporarily converted to 100% OEC in mid- 1990. A 350 tpd cross-fired melter at Gallo Glass Company in Modesto, California was rebuilt for permanent commercial operation with 100% OEC in mid-1991. Initially, both of these melters were supplied with oxygen from liquid storage. Subsequently, in late 1992, a Pressure Swing Adsorption oxygen plant was installed at Gallo to supply oxygen for 100% OEC glass melting. The particular PSA plant design used at Gallo achieves maximum efficiency by cycling the adsorbent beds between pressurized and evacuated states, and is therefore referred to as a Vacuum/Pressure Swing Adsorption (VPSA) plant.

Tuson, G.B.; Kobayashi, H.; Campbell, M.J.

1994-08-01T23:59:59.000Z

87

Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System  

NLE Websites -- All DOE Office Websites (Extended Search)

EstablishmEnt EstablishmEnt of an EnvironmEntal Control tEChnology laboratory with a CirCulating fluidizEd-bEd Combustion systEm Description In response to President Bush's Clear Skies Initiative in 2002-a legislative proposal to control the emissions of nitrogen oxides (NO x ), sulfur dioxide (SO 2 ), and mercury (Hg) from power plants-the National Energy Technology Laboratory (NETL) organized a Combustion Technology University Alliance and hosted a Solid Fuel Combustion Technology Alliance Workshop. The workshop identified four high- priority research needs for controlling emissions from fossil-fueled power plants: multipollutant control, improved sorbents and catalysts, mercury monitoring and capture, and an improved understanding of the underlying combustion chemistry.

88

Gasoline direct injection: Actual trends and future strategies for injection and combustion systems  

SciTech Connect

Recent developments have raised increased interest on the concept of gasoline direct injection as the most promising future strategy for fuel economy improvement of SI engines. The general requirements for mixture preparation and combustion systems in a GDI engine are presented in view of known and actual systems regarding fuel economy and emission potential. The characteristics of the actually favored injection systems are discussed and guidelines for the development of appropriate combustion systems are derived. The differences between such mixture preparation strategies as air distributed fuel and fuel wall impingement are discussed, leading to the alternative approach to the problem of mixture preparation with the fully air distributing concept of direct mixture injection.

Fraidl, G.K.; Piock, W.F.; Wirth, M.

1996-09-01T23:59:59.000Z

89

Transformations of inorganic coal constituents in combustion systems  

SciTech Connect

This report contains the computer codes developed for the coal combustion project. In Subsection B.1 the FORTRAN code developed for the percolative fragmentation model (or the discrete model, since a char is expressed as a collection of discrete elements in a discrete space) is presented. In Subsection B.2 the code for the continuum model (thus named because mineral inclusions are distributed in a continuum space) is presented. A stereological model code developed to obtain the pore size distribution from a two-dimensional data is presented in Subsection B.3.

Helble, J.J. (ed.); Srinivasachar, S.; Wilemski, G.; Boni, A.A. (PSI Technology Co., Andover, MA (United States)); Kang, Shim-Gyoo; Sarofim, A.F.; Graham, K.A.; Beer, J.M. (Massachusetts Inst. of Tech., Cambridge, MA (United States)); Peterson, T.W.; Wendt, O.L.; Gallagher, N.B.; Bool, L. (Arizona Univ., Tucson, AZ (United States)); Huggins, F.E.; Huffman, G.P.; Shah, N.; Shah, A. (Kentucky Univ., Lexington

1992-11-01T23:59:59.000Z

90

Oxy-fuel combustion systems for pollution free coal fired power generation  

SciTech Connect

Jupiter Oxygen's patented oxy-fuel combustion systems1 are capable of economically generating power from coal with ultra-low emissions and increased boiler efficiency. Jupiter's system uses pure oxygen as the combustion agent, excluding air and thus nitrogen, concentrating CO2 and pollutants for efficient capture with near zero NOx production, reducing exhaust mass flow, and increasing radiant heat transfer. Flue-gas recirculation rates can be varied to add flexibility to new boiler designs using this technology. Computer modeling and thermal analysis have identified important design considerations in retrofit applications.

Ochs, Thomas L.; Oryshchyn, Danylo B.; Gross, Dietrich (Jupiter Oxygen Corp.); Patrick, Brian (Jupiter Oxygen Corp.); Gross, Alex (Jupiter Oxygen Corp.); Dogan, Cindy; Summers, Cathy A.; Simmons, William (CoalTeck LLC); Schoenfeld, Mark (Jupiter Oxygen Corp.)

2004-01-01T23:59:59.000Z

91

A comparative assessment of alternative combustion turbine inlet air cooling system  

SciTech Connect

Interest in combustion turbine inlet air cooling (CTAC) has increased during the last few years as electric utilities face increasing demand for peak power. Inlet air cooling increases the generating capacity and decreases the heat rate of a combustion turbine during hot weather when the demand for electricity is generally the greatest. Several CTAC systems have been installed, but the general applicability of the concept and the preference for specific concepts is still being debated. Concurrently, Rocky Research of Boulder City, Nevada has been funded by the U.S. Department of Energy to conduct research on complex compound (ammoniated salt) chiller systems for low-temperature refrigeration applications.

Brown, D.R.; Katipamula, S.; Konynenbelt, J.H.

1996-02-01T23:59:59.000Z

92

High resolution fossil fuel combustion CO2 emission fluxes for the United States  

SciTech Connect

Quantification of fossil fuel CO{sub 2} emissions at fine space and time resolution is emerging as a critical need in carbon cycle and climate change research. As atmospheric CO{sub 2} measurements expand with the advent of a dedicated remote sensing platform and denser in situ measurements, the ability to close the carbon budget at spatial scales of {approx}100 km{sup 2} and daily time scales requires fossil fuel CO{sub 2} inventories at commensurate resolution. Additionally, the growing interest in U.S. climate change policy measures are best served by emissions that are tied to the driving processes in space and time. Here we introduce a high resolution data product (the 'Vulcan' inventory: www.purdue.edu/eas/carbon/vulcan/) that has quantified fossil fuel CO{sub 2} emissions for the contiguous U.S. at spatial scales less than 100 km{sup 2} and temporal scales as small as hours. This data product, completed for the year 2002, includes detail on combustion technology and 48 fuel types through all sectors of the U.S. economy. The Vulcan inventory is built from the decades of local/regional air pollution monitoring and complements these data with census, traffic, and digital road data sets. The Vulcan inventory shows excellent agreement with national-level Department of Energy inventories, despite the different approach taken by the DOE to quantify U.S. fossil fuel CO{sub 2} emissions. Comparison to the global 1{sup o} x 1{sup o} fossil fuel CO{sub 2} inventory, used widely by the carbon cycle and climate change community prior to the construction of the Vulcan inventory, highlights the space/time biases inherent in the population-based approach.

Gurney, Kevin R.; Mendoza, Daniel L.; Zhou, Yuyu; Fischer, Marc L.; Miller, Chris C.; Geethakumar, Sarath; de la Rue du Can, Stephane

2009-03-19T23:59:59.000Z

93

Pulse combustion  

Science Journals Connector (OSTI)

Pulse combustion has been gaining increased interest because of its potential for higher combustion efficiency greater combustion intensity and lower pollutant emissions. Unsteady combustion causes increased mass momentum and heat transfer. As a result reactants mix faster heat release is accelerated and heat transfer is enhanced in unsteady reacting flows. Many of these phenomena were discovered long ago by engineers looking for the cause of often detrimental combustion instabilities. Much more recently some of these enhanced transfer properties have been used to design efficient and compact pulse combustors. Although to date successful commercialization on a large scale has been limited to home heating units (e.g. the Lenox Pulse Furnace) highly efficient pulse spray dryers (Bepex Unison Dryer) pulse calciners and pulse waste incinerators have been designed. Pulsations have also been applied to carbon black fluidized bed gasifiers. Not all these designs will become economically viable. However the development of tunable pulse combustors that can be acoustically matched to the changing resonance frequency of these pulse processes have made many of them more promising. Recent findings that pulsation can enhance burning even in turbulent flows lend further encouragement to the developers of novel pulse combustion devices.

Jechiel I. Jagoda

2000-01-01T23:59:59.000Z

94

Combustion Noise  

E-Print Network (OSTI)

stabilize or destabilize the modes of the system, depending on the configuration of the combustor and the form of the coupling [26, 30]. In contrast to combustion instability, in broad-band combustion noise the unsteadiness in the rate of combustion... from th s in a mod on tempera , entropic a de of indir t frequenci r, open que sical theory assical expe s [14] who it by a spa d a transie le gases. A e bubble si idered as a flame was ent was o ng and dif depended udy it wa ion, ? ?,p r t? : (a...

Dowling, Ann P.; Mahmoudi, Yasser

2014-01-01T23:59:59.000Z

95

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect

Vision 21 combustion systems will require innovative low emission designs and low development costs if Vision 21 goals are to be realized. In this three-year project, an advanced computational software tool will be developed for the design of low emission combustion systems required for Vision 21 clean energy plants. The combustion Large Eddy Simulation (LES) software will be able to accurately simulate the highly transient nature of gaseous-fueled turbulent combustion so that innovative concepts can be assessed and developed with fewer high-cost experimental tests. During the first year, the project included the development and implementation of improved chemistry (reduced GRI mechanism), subgrid turbulence (localized dynamic), and subgrid combustion-turbulence interaction (Linear Eddy) models into the CFDACE+ code. University expertise (Georgia Tech and UC Berkeley) was utilized to help develop and implement these advanced submodels into the unstructured, parallel CFD flow solver, CFD-ACE+. Efficient numerical algorithms that rely on in situ look-up tables or artificial neural networks were implemented for chemistry calculations. In the second year, the combustion LES software was evaluated and validated using experimental data from lab-scale and industrial test configurations. This code testing (i.e., alpha testing) was performed by CFD Research Corporation's engineers. During the third year, six industrial and academic partners used the combustion LES code and exercised it on problems of their choice (i.e., beta testing). Final feedback and optimizations were then be implemented in the final release version of the combustion LES software that will be licensed to the general public. An additional one-year task was added for the fourth year of this program entitled, ''LES Simulations of SIMVAL Results''. For this task, CFDRC performed LES calculations of selected SIMVAL cases, and compared predictions with measurements. In addition to comparisons with NO{sub x} and CO exit measurements, comparisons were made to measured pressure oscillations. Possible gaps in the data sets were identified, as well as potential areas of improvement for combustion and turbulence models. Work in this seventeenth quarter (October-December 2004) consisted of writing the draft final report for review by DOE. The report was delivered to DOE in January, 2005.

Clifford E. Smith

2005-04-01T23:59:59.000Z

96

Mechanism of Hydrocarbon Formation in Combustion Processes  

Science Journals Connector (OSTI)

Emissions from transportation systems that derive their energy directly from combustion processes include products of incomplete combustion, oxides of...

R. A. Matula

1973-01-01T23:59:59.000Z

97

Combustion system development of a two-stroke, spark-assisted DI diesel engine  

SciTech Connect

A loop-scavenged, two-stroke, spark-assisted DI diesel engine was developed by modifying an outboard marine gasoline engine to operate on diesel fuel with high fuel efficiency similar to a diesel engine, yet retain the two-stroke engine advantages of low cost, light weight, and high power-to-weight ratio. Engine modification was concentrated in the area of the combustion system, including transfer port design to generate air swirl in the cylinder, and combustion chamber design to generate air squish and turbulence. Bore and stroke (84 x 72 mm) remained the same as those of the base engine. The experimental engine used the production engine's piston, crankshaft, connecting rod, bearings, and cylinder block. The transfer port design was optimized using a flow test bench for best swirl and air flow pattern with a simple flow visualization technique. The best combustion chamber geometry, compression ratio, and fuel injection spray pattern were determined through engine experiments.

Ariga, S.; Matsushita, Y.

1988-01-01T23:59:59.000Z

98

Orimulsion in low NO{sub x} burner based combustion systems  

SciTech Connect

The potential of Orimulsion (a bitumen in water emulsion) as a suitable fuel for power generation boilers has been established subject to full recognition being given to the environmental aspects of its application. An important factor is the control of NO{sub x} emissions from the combustion process. Work on NO{sub x} control when firing Orimulsion has inevitably been based on the techniques utilized for low NO{sub x} fuel oil combustion. This fundamental work has indicated the different performance characteristics of these two fuels when fired in similar low NO{sub x} burner configurations. Nevertheless it has been demonstrated that Orimulsion can achieve similar, and perhaps even improved, low NO{sub x} performance when compared to heavy (No. 6) fuel oil, and can be used with equal flexibility to that of heavy fuel oil in low NO{sub x} combustion systems based on both burner and in furnace staging techniques.

Allen, J.W.; Beal, P. [International Combustion Ltd., Derby (United Kingdom). Rolls-Royce Industrial Power Group

1996-12-31T23:59:59.000Z

99

Sources of CO and UHC Emissions in Low-Temperature Diesel Combustion Systems  

Energy.gov (U.S. Department of Energy (DOE))

The sources of unburned hydrocarbons and CO emissions from a PCI-like, early-injection low-temperature combustion system are examined through a combination of homogeneous reactor modeling employing detailed kinetics, multi-dimensional modeling using a reduced kinetic scheme, engine-out emissions measurements, and in-cylinder imaging of the spatial distributions of UHC and CO.

100

On thermoelectric power conversion from heat re-circulating combustion systems F. J. Weinberg  

E-Print Network (OSTI)

On thermoelectric power conversion from heat re-circulating combustion systems F. J. Weinberg for the Second Law heat engine cycles the maximum power that can be extracted is independent of layout Fax: 4420 7594 5604 Word count: 3750 Diags. equivalent: 1600 5350 #12;On thermoelectric power

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

1. Solid Flame, Merzhanov A. and Mukasyan A., Torus Press, Nauka, Moscow 2007, 280. 2. Combustion of Heterogeneous Systems: Fundamentals and Applications for Material  

E-Print Network (OSTI)

. Combustion of Heterogeneous Systems: Fundamentals and Applications for Material Synthesis, ed. Mukasyan A. "Combustion Synthesis of Advanced Materials", in ASM Handbook: Powder Metal Technologies and Applications of Heterogeneous Systems: Fundamentals and Applications for Material Synthesis, Research Signpost Publisher, 2007

Mukasyan, Alexander

102

NETL: Combustion Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Nebraska Public Power District's Sheldon Station with APFBC Technology Nebraska Public Power District's Sheldon Station with APFBC Technology FBC Repower APFBC AES Greenidge APFBC Dan River FBC, APFBC Four Corners CHIPPS H.F. Lee Products Summary Sheldon Summary APFBC Sheldon GFBCC Sheldon APFBC L.V. Sutton Contents: APFBC Repowering Project Summary Key Features Site Layout Performance Environmental Characteristics Cost Other Combustion Systems Repowering Study Links: A related study is underway that would repower Sheldon Unit 1 and Unit 2 with gasification fluidized-bed combined cycle technology (GFBCC). CLICK HERE to find out more about repowering the Sheldon station with GFBCC instead. APFBC Repowering Project Summary Click on picture to enlarge Advanced circulating pressurized fluidized-bed combustion combined cycle systems (APFBC) are systems with jetting-bed pressurized fluidized-bed (PFB) carbonizer/gasifier and circulating PFBC combustor. The PFB carbonizer and PFBC both operate at elevated pressures (10 to 30 times atmospheric pressure) to provide syngas for operating a gas turbine topping combustor giving high cycle energy efficiency. The remaining char from the PFB carbonizer is burned in the pressurized PFBC. The combustion gas from the PFB also feeds thermal energy to the gas turbine topping combustor. This provides combined cycle plant efficiency on coal by providing the opportunity to generate electricity using both high efficiency gas turbines and steam.

103

LASER STABILIZATION FOR NEAR ZERO NO{sub x} GAS TURBINE COMBUSTION SYSTEMS  

SciTech Connect

Historically, the development of new industrial gas turbines has been primarily driven by the intent to achieve higher efficiency, lower operating costs and lower emissions. Higher efficiency and lower cost is obtained through higher turbine operating temperatures, while reduction in emissions is obtained by extending the lean operating limit of the combustor. However reduction in the lean stability limit of operation is limited greatly by the chemistry of the combustion process and by the occurrence of thermo-acoustic instabilities. Solar Turbines, CFD Research Corporation, and Los Alamos National Laboratory have teamed to advance the technology associated with laser-assisted ignition and flame stabilization, to a level where it could be incorporated onto a gas turbine combustor. The system being developed is expected to enhance the lean stability limit of the swirl stabilized combustion process and assist in reducing combustion oscillations. Such a system has the potential to allow operation at the ultra-lean conditions needed to achieve NO{sub x} emissions below 5 ppm without the need of exhaust treatment or catalytic technologies. The research effort was focused on analytically modeling laser-assisted flame stabilization using advanced CFD techniques, and experimentally demonstrating the technology, using a solid-state laser and low-cost durable optics. A pulsed laser beam was used to generate a plasma pool at strategic locations within the combustor flow field such that the energy from the plasma became an ignition source and helped maintain a flame at ultra lean operating conditions. The periodic plasma generation and decay was used to nullify the fluctuations in the heat release from the flame itself, thus decoupling the heat release from the combustor acoustics and effectively reducing the combustion oscillations. The program was built on an existing technology base and includes: extending LANL's existing laser stabilization experience to a sub-scale combustor rig, performing and validating CFD predictions, and ultimately conducting a full system demonstration in a multi-injector combustion system at Solar Turbines.

Vivek Khanna

2002-09-30T23:59:59.000Z

104

Integration and operation of post-combustion capture system on coal-fired power generation: load following and peak power  

E-Print Network (OSTI)

Coal-fired power plants with post combustion capture and sequestration (CCS) systems have a variety of challenges to integrate the steam generation, air quality control, cooling water systems and steam turbine with the ...

Brasington, Robert David, S.M. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

105

Space shuttle based microgravity smoldering combustion experiments  

E-Print Network (OSTI)

zone, and smolder heat of combustion (energy per unit massand Q is the smolder heat of combustion. The mass fluxes ofdata. The smolder heat of combustion is not well determined

Walther, David C; Fernandez-Pello, Carlos; Urban, David L

1999-01-01T23:59:59.000Z

106

A coal-fired combustion system for industrial process heating applications  

SciTech Connect

PETC has implemented a number of advanced combustion research projects that will lead to the establishment of a broad, commercially acceptable engineering data base for the advancement of coal as the fuel of choice for boilers, furnaces, and process heaters. Vortec Corporation's Phase III development contract DE-AC22-91PC91161 for a Coal-Fired Combustion System for Industrial Process Heating Applications'' is project funded under the DOE/PETC advanced combustion program. This advanced combustion system research program is for the development of innovative coal-fired process heaters which can be used for high temperature melting, smelling and waste vitrification processes. The process heater concepts to be developed are based on advanced glass melting and ore smelting furnaces developed and patented by Vortec Corporation. The process heater systems to be developed have multiple use applications; however, the Phase III research effort is being focused on the development of a process heater system to be used for producing value added vitrified glass products from boiler/incinerator ashes and industrial wastes. The primary objective of the Phase III project is to develop and integrate all the system components, from fuel through total system controls, and then test the complete system in order to evaluate its potential marketability. During the current reporting period, approval of Vortec's Environmental Assessment (EA) required under the National Environmental Policy Act (NEPA) was approved. The EA approval cycle took approximately 9 months. The preliminary test program which was being held in abeyance pending approval of the EA was initiated. Six preliminary test runs were successfully competed during the period. Engineering and design activities in support of the Phase III proof of concept are continuing, and modifications to the existing test system configuration to allow performance of the preliminary tests were completed.

Not Available

1992-09-03T23:59:59.000Z

107

Overview of Biomass Combustion  

Science Journals Connector (OSTI)

The main combustion systems for biomass fuels are presented and the respective requirements ... etc.) in industrial boilers or for co-combustion in power plants. For fuels with high ... moving grate firings are u...

T. Nussbaumer; J. E. Hustad

1997-01-01T23:59:59.000Z

108

Microsoft Word - 41020_GE_Adv Combustion System_Factsheet_Rev01_10-03.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

FACT SHEET FACT SHEET Advanced Combustion Systems for Next Generation Gas Turbines I.) Participants: Principal Investigator: General Electric, Air Force Research Lab II.) Description A. Objective: Develop a new gas turbine combustion system design with 50% lower emissions, and demonstrate it at sub-scale. The system will be compared with state-of- the-art lean premixed gas turbine NOx emissions at temperatures and pressures comparable to GE F-Class turbines. B. Background/Relevancy: Next generation turbine power plants will require high efficiency gas turbines with higher combustor pressures and firing temperatures than is currently available. These increases in the severity of gas turbine operating conditions will tend to increase NOx emissions. As the desire for higher efficiency drives combustor pressures

109

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect

Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this fifth quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, in-situ adaptive tabulation (ISAT) for efficient chemical rate storage and retrieval was further tested in the LES code. The use of multiple trees and periodic tree dumping was investigated. Implementation of the Linear Eddy Model (LEM) for subgrid chemistry was finished for serial applications. Validation of the model on a backstep reacting case was performed. Initial calculations of the SimVal experiment were performed for various barrel lengths, equivalence ratio, combustor shapes, and turbulence models. The effects of these variables on combustion instability was studied. Georgia Tech continues the effort to parameterize the LEM over composition space so that a neural net can be used efficiently in the combustion LES code. Next quarter, the 2nd consortium meeting will be held at CFDRC. LES software development and testing will continue. Alpha testing of the code will be performed on cases of interest to the industrial consortium. Optimization of subgrid models will be pursued, particularly with the ISAT approach. Also next quarter, the demonstration of the neural net approach, for chemical kinetics speed-up in CFD-ACE+, should be accomplished.

Steve Cannon; Baifang Zuo; Virgil Adumitroaie; Keith McDaniel; Cliff Smith

2002-01-01T23:59:59.000Z

110

Corrosion and its effect on mechanical properties of materials for advanced combustion systems  

SciTech Connect

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces that can operate at temperatures much higher than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitates development and application of advanced ceramic materials in these designs. The objectives of the present program are to evaluate (a) the chemistry of gaseous and condensed products that arise during combustion of coal; (b) the corrosion behavior of candidate materials in air, slag and salt environments for application in the combustion environments; and (c) the residual mechanical properties of the materials after corrosion. The program emphasizes temperatures in the range of 1000-1400{degrees}C for ceramic materials and 600-1000{degrees}C for metallic alloys. Coal/ash chemistries developed on the basis of thermodynamic/kinetic calculations, together with slags from actual combustors, are used in the program. The materials being evaluated include monolithic silicon carbide from several sources: silicon, nitride, silicon carbide in alumina composites, silicon carbide fibers in a silicon carbide- matrix composite, and some advanced nickel-base alloys. The paper presents results from an ongoing program on corrosion performance of candidate ceramic materials exposed to air, salt and slag environments and their affect on flexural strength and energy absorbed during fracture of these materials.

Natesan, K. [Argonne National Lab., IL (United States); Freeman, M.; Mathur, M. [Pittsburgh Energy Technology Center, Pittsburgh, PA (United States)

1996-05-01T23:59:59.000Z

111

Fuel Flexible Combustion Systems for High-Efficiency Utilization of Opportunity Fuels in Gas Turbines  

SciTech Connect

The purpose of this program was to develop low-emissions, efficient fuel-flexible combustion technology which enables operation of a given gas turbine on a wider range of opportunity fuels that lie outside of current natural gas-centered fuel specifications. The program encompasses a selection of important, representative fuels of opportunity for gas turbines with widely varying fundamental properties of combustion. The research program covers conceptual and detailed combustor design, fabrication, and testing of retrofitable and/or novel fuel-flexible gas turbine combustor hardware, specifically advanced fuel nozzle technology, at full-scale gas turbine combustor conditions. This project was performed over the period of October 2008 through September 2011 under Cooperative Agreement DE-FC26-08NT05868 for the U.S. Department of Energy/National Energy Technology Laboratory (USDOE/NETL) entitled "Fuel Flexible Combustion Systems for High-Efficiency Utilization of Opportunity Fuels in Gas Turbines". The overall objective of this program was met with great success. GE was able to successfully demonstrate the operability of two fuel-flexible combustion nozzles over a wide range of opportunity fuels at heavy-duty gas turbine conditions while meeting emissions goals. The GE MS6000B ("6B") gas turbine engine was chosen as the target platform for new fuel-flexible premixer development. Comprehensive conceptual design and analysis of new fuel-flexible premixing nozzles were undertaken. Gas turbine cycle models and detailed flow network models of the combustor provide the premixer conditions (temperature, pressure, pressure drops, velocities, and air flow splits) and illustrate the impact of widely varying fuel flow rates on the combustor. Detailed chemical kinetic mechanisms were employed to compare some fundamental combustion characteristics of the target fuels, including flame speeds and lean blow-out behavior. Perfectly premixed combustion experiments were conducted to provide experimental combustion data of our target fuels at gas turbine conditions. Based on an initial assessment of premixer design requirements and challenges, the most promising sub-scale premixer concepts were evaluated both experimentally and computationally. After comprehensive screening tests, two best performing concepts were scaled up for further development. High pressure single nozzle tests were performed with the scaled premixer concepts at target gas turbine conditions with opportunity fuels. Single-digit NOx emissions were demonstrated for syngas fuels. Plasma-assisted pilot technology was demonstrated to enhance ignition capability and provide additional flame stability margin to a standard premixing fuel nozzle. However, the impact of plasma on NOx emissions was observed to be unacceptable given the goals of this program and difficult to avoid.

Venkatesan, Krishna

2011-11-30T23:59:59.000Z

112

DOE/NETL ADVANCED COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY  

NLE Websites -- All DOE Office Websites (Extended Search)

-OSU-Coal%20Direct%20Chem%20Looping.pdf. Fan, L.-S., "Chemical Looping Systems for Fossil Energy Conversions," John Wiley & Sons, Inc., Hoboken, NJ, USA, October 2010. http:...

113

High-Fidelity Multi-Phase Radiation Module for Modern Coal Combustion Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Task Task Description Sample calculations LBL-PMC Future Work High-Fidelity Multi-Phase Radiation Module for Modern Coal Combustion Systems Jian Cai 1 Ricardo Marquez 1 Michael F. Modest 2 1 Postdoctoral Research Associate 2 Shaffer and George Professor of Engineering University of California Merced Merced, CA 95343, USA DE-FG26-10FE0003801 May 2012 - Pittsburgh 2/17 Introduction Task Description Sample calculations LBL-PMC Future Work Radiation Challenges in Multi-Phase Reacting Flows Radiative heat transfer in high temperature combustion systems Thermal radiation becomes very important at elevated temperatures Coal and hydrocarbon fuels C n H m → H 2 O, CO 2 , CO, NO x , soot, char, ash CO 2 , H 2 O, soot, char and ash strongly emit and absorb radiative energy (lower temperature levels) Radiative effects are conveniently ignored or treated with very crude models Neglecting

114

ESTABLISHMENT OF AN ENVIRONMENTAL CONTROL TECHNOLOGY LABORATORY WITH A CIRCULATING FLUIDIZED-BED COMBUSTION SYSTEM  

SciTech Connect

This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period July 1, 2004 through September 30, 2004. The following tasks have been completed. First, renovation of the new Combustion Laboratory and the construction of the Circulating Fluidized-Bed (CFB) Combustor Building have started. Second, the design if the component parts of the CFBC system have been reviewed and finalized so that the drawings may be released to the manufacturers during the next quarter. Third, the experiments for solid waste (chicken litter) incineration have been conducted using a Thermogravimetric Analyzer (TGA). This is in preparation for testing in the simulated fluidized-bed combustor. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter has been outlined in this report.

Wei-Ping Pan; Andy Wu; John T. Riley

2004-10-30T23:59:59.000Z

115

Advanced Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Systems Advanced Combustion Background Conventional coal-fired power plants utilize steam turbines to generate electricity, which operate at efficiencies of 35-37 percent. Operation at higher temperatures and pressures can lead to higher efficiencies, resulting in reduced fuel consumption and lower greenhouse gas emissions. Higher efficiency also reduces CO2 production for the same amount of energy produced, thereby facilitating a reduction in greenhouse gas emissions. When combined, oxy-combustion comes with an efficiency hit, so it will actually increase the amount of CO2 to be captured. But without so much N2 in the flue gas, it will be easier and perhaps more efficient to capture, utilize and sequester. NETL's Advanced Combustion Project and members of the NETL-Regional University

116

Research in Industrial Combustion Systems - Current and Future R&D  

E-Print Network (OSTI)

/DIP have funded R&D primarily directed to applications that would benefit the industrial sector. The following material briefly describes some of the GRI2.3 and DOE/Olp3.4 program activi ties in industrial combustion systems. The overall goal of DOE... technology develop ments in gas-fired equipment. GRI's emphasis is on developing generic technologies which have diverse applications in many industries and on integrating these technologies in selected industries where the present gas load...

Rebello, W. J.; Keller, J. G.

117

ESTABLISHMENT OF AN ENVIRONMENTAL CONTROL TECHNOLOGY LABORATORY WITH A CIRCULATING FLUIDIZED-BED COMBUSTION SYSTEM  

SciTech Connect

This purpose of this report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period April 1, 2005 through June 30, 2005. The following tasks have been completed. First, the new Combustion Laboratory was occupied on June 15, 2005, and the construction of the Circulating Fluidized-Bed (CFB) Combustor Building is in the final painting stage. Second, the fabrication and manufacturing contract for the CFBC Facility was awarded to Sterling Boiler & Mechanical, Inc. of Evansville, Indiana. Sterling is manufacturing the assembly and component parts of the CFBC system. The erection of the CFBC system is expected to start September 1, 2005. Third, mercury emissions from the cofiring of coal and chicken waste was studied experimentally in the laboratory-scale simulated fluidized-bed combustion facility. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter is described.

Wei-Ping Pan; Andy Wu; John T. Riley

2005-07-30T23:59:59.000Z

118

Behavior of Bidirectional Spring Unit in Isolated Floor Systems  

E-Print Network (OSTI)

gravity based sys- tems suspension mechanisms or linear spring based systems coil springs or rubber unitsBehavior of Bidirectional Spring Unit in Isolated Floor Systems Shenlei Cui, M.ASCE1 ; Michel of bidirectional spring units used as isolators in a kind of isolated floor system, three types of characterization

Bruneau, Michel

119

National Energy Modeling System (United States) | Open Energy Information  

Open Energy Info (EERE)

National Energy Modeling System (United States) National Energy Modeling System (United States) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: National Energy Modeling System (United States) Focus Area: Biomass Topics: Policy, Deployment, & Program Impact Website: www.eia.gov/oiaf/aeo/overview/ Equivalent URI: cleanenergysolutions.org/content/national-energy-modeling-system-unite Language: English Policies: "Deployment Programs,Regulations" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Technical Assistance Regulations: Utility/Electricity Service Costs The National Energy Modeling System (NEMS) is a computer-based, energy-economy modelling system of the United States through 2030. NEMS

120

Influence of the Type of Oxygen Carriers on the Performance of a Hybrid Solar Chemical Looping Combustion System  

Science Journals Connector (OSTI)

A thermal analysis of a hybrid solar chemical looping combustion (Hy-Sol-CLC) system is presented to identify the energetic performance of various combinations of fuel and oxygen carriers. ... (6, 13) However, the potential advantages and disadvantages of these alternative oxygen carriers and inert materials for use in Hy-Sol-CLC systems are yet to be evaluated. ... combustion has the advantage that no energy is lost for the sepn. of CO2. ...

Mehdi Jafarian; Maziar Arjomandi; Graham J. Nathan

2014-04-09T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Utilization of Combustion?Driven Oscillations  

Science Journals Connector (OSTI)

The possible applications of combustion?driven oscillations fall into two categories. The first category includes applications that are related to the combustion process itself such as those concerned with the possibility of alterlog space heat?release rate combustion efficiency heat transfer to surfaces and agglomeration of solid or liquid products of combustion. A consideration of available experimental and theoreticalinformation indicates that none of these applications are too promising when compared with alternative methods of performing the same functions. The second category includes applications that use pulsatory phenomena to do a particular iob. Examples are the application of valveless pulse jets to (a) the propulsion of drones (b) helicopter blade?tip propulsion (c) cutting of Arctic ice and (d) inducing pressure rises in through?flow combustion systems. For one reason or another most of these ideas have been dropped. However the use of the pulsating?combustion process to supply both the air at a high flow velocity to a combustor and the products of combustion at a high velocity to a heat exchanger thereby making possible a compact self?contained unit appears to have great promise. One such unit of residential boiler size is already available. Although this unit is valved as was the V?1 conversion to a valveless unit appears possible. The development of industrial?sized units appears equally feasible. Apparently the development of such units is contingent upon (a) adequate understanding of how to design effective aerodynamic valves and (b) the collaboration of an inventor experimentalist analyst and financier on a specific program.

Abbott A. Putnam

1963-01-01T23:59:59.000Z

122

Vehicle Technologies Office: Combustion Engine Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Engine Combustion Engine Research to someone by E-mail Share Vehicle Technologies Office: Combustion Engine Research on Facebook Tweet about Vehicle Technologies Office: Combustion Engine Research on Twitter Bookmark Vehicle Technologies Office: Combustion Engine Research on Google Bookmark Vehicle Technologies Office: Combustion Engine Research on Delicious Rank Vehicle Technologies Office: Combustion Engine Research on Digg Find More places to share Vehicle Technologies Office: Combustion Engine Research on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Advanced Combustion Engines Combustion Engines Emission Control Waste Heat Recovery Fuels & Lubricants Materials Technologies Combustion Engine Research

123

Vehicle Technologies Office: Advanced Combustion Engines  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Combustion Advanced Combustion Engines to someone by E-mail Share Vehicle Technologies Office: Advanced Combustion Engines on Facebook Tweet about Vehicle Technologies Office: Advanced Combustion Engines on Twitter Bookmark Vehicle Technologies Office: Advanced Combustion Engines on Google Bookmark Vehicle Technologies Office: Advanced Combustion Engines on Delicious Rank Vehicle Technologies Office: Advanced Combustion Engines on Digg Find More places to share Vehicle Technologies Office: Advanced Combustion Engines on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Advanced Combustion Engines Combustion Engines Emission Control Waste Heat Recovery Fuels & Lubricants Materials Technologies Advanced Combustion Engines

124

Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System  

SciTech Connect

This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period January 1, 2006 through March 31, 2006. Work was performed on the following activities. First, the fabrication and manufacture of the CFBC Facility were completed. The riser, primary cyclone and secondary cyclone of Circulating Fluidized Bed (CFB) Combustor have been erected. Second, the Mercury Control Workshop and the Grand Opening of Institute for Combustion Science and Environmental Technology (ICSET) were successfully held on February 22 and 23, 2006, respectively. Third, effects of hydrogen chlorine (HCl) and sulfur dioxide (SO{sub 2}) on mercury oxidation were studied in a drop tube reactor. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter is described in this report.

Wei-Ping Pan; Yan Cao; Songgeng Li

2006-04-01T23:59:59.000Z

125

United States Industrial Motor-Driven Systems Market Assessment...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Motor-Driven Systems Market Assessment: Charting a Roadmap to Energy Savings for Industry United States Industrial Motor-Driven Systems Market Assessment: Charting a Roadmap to...

126

Cogeneration system with low NO sub x combustion of fuel gas  

SciTech Connect

This patent describes a cogeneration system for the production of electricity and refrigeration with low NO{sub x} combustion of fuel gas supplied at a high pressure. It comprises a heat exchanger to heat the fuel gas at high pressure; a turbo-expander connected to receive and expand the heated fuel gas from the heat exchanger; a centrifugal compressor driven by the turbo-expander the compressor being the refrigerant compressor of a refrigeration system; a porous fiber burner connected to receive the expanded fuel gas from the turbo-expander together with the requisite combustion air; a high-pressure steam boiler heated by the combustion of the expanded fuel gas on the outer surface of the porous fiber burner, the boiler being connected to pass the resulting flue gas with low NO{sub x} content through the heat exchanger to heat the fuel gas at high pressure; a steam turbine connected to receive and expand highpressure steam from the boiler and to return expanded and condensed steam to the boiler; and an electric generator driven by the steam turbine.

Garbo, P.W.

1991-06-25T23:59:59.000Z

127

Compact, electro-hydraulic, variable valve actuation system providing variable lift, timing and duration to enable high efficiency engine combustion control  

Energy.gov (U.S. Department of Energy (DOE))

Discusses development of advanced variable valve actuation system to enable high efficiency combustion highlighting advances to improving system packaging while reducing cost

128

Utilization and Mitigation of VAM/CMM Emissions by a Catalytic Combustion Gas Turbine  

Science Journals Connector (OSTI)

A system configured with a catalytic combustion gas turbine generator unit is introduced. The system has ... Heavy Industries, Ltd., such as small gas turbines, recuperators and catalytic combustors, and catalyti...

K. Tanaka; Y. Yoshino; H. Kashihara; S. Kajita

2013-01-01T23:59:59.000Z

129

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect

In this project, an advanced computational software tool will be developed for the design of low emission combustion systems required for Vision 21 clean energy plants. This computational tool will utilize Large Eddy Simulation (LES) methods to predict the highly transient nature of turbulent combustion. The time-accurate software will capture large scale transient motion, while the small scale motion will be modeled using advanced subgrid turbulence and chemistry closures. This three-year project is composed of: Year 1--model development/implementation, Year 2--software alpha validation, and Year 3--technology transfer of software to industry including beta testing. In this first year of the project, subgrid models for turbulence and combustion are being developed through university research (Suresh Menon-Georgia Tech and J.-Y. Chen- UC Berkeley) and implemented into a leading combustion CFD code, CFD-ACE+. The commercially available CFDACE+ software utilizes unstructured , parallel architecture and 2nd-order spatial and temporal numerics. To date, the localized dynamic turbulence model and reduced chemistry models (up to 19 species) for natural gas, propane, hydrogen, syngas, and methanol have been incorporated. The Linear Eddy Model (LEM) for subgrid combustion-turbulence interaction has been developed and implementation into CFD-ACE+ has started. Ways of reducing run-time for complex stiff reactions is being studied, including the use of in situ tabulation and neural nets. Initial validation cases have been performed. CFDRC has also completed the integration of a 64 PC cluster to get highly scalable computing power needed to perform the LES calculations ({approx} 2 million cells) in several days. During the second year, further testing and validation of the LES software will be performed. Researchers at DOE-NETL are working with CFDRC to provide well-characterized high-pressure test data for model validation purposes. To insure practical, usable software is developed, a consortium of gas turbine and industrial burner manufacturers has been established to guide and direct the software development/validation effort. The consortium members include Siemens- Westinghouse, GE Power Systems, Pratt & Whitney, Rolls-Royce, Honeywell, Solar, Coen, McDermott, Vapor Power, Woodward FST, Parker Hannifin, John Zink, RamGen Power, Virginia Tech, DOE-NETL, Air Force Research Laboratory, DOE-ANL, and NASA GRC. Annual consortium meetings are being held in Huntsville, with the 2nd meeting scheduled for January 31-February 1, 2002. 2 Benefits of the program will include the ability to assess complex combustion challenges such as combustion instability, lean blowout, flashback, emissions and the effect of fuel type on performance. The software will greatly reduce development costs and the time cycle of combustor development. And perhaps the greatest benefit will be that the software will stimulate new, creative ideas to solve the combustion challenges of the Vision 21 plant.

Cannon, Steven M.; Adumitroaie, Virgil; McDaniel, Keith S.; Smith, Clifford E.

2001-11-06T23:59:59.000Z

130

RECOVERY AND SEQUESTRATION OF CO2 FROM STATIONARY COMBUSTION SYSTEMS BY PHOTOSYNTHESIS OF MICROALGAE  

SciTech Connect

Most of the anthropogenic emissions of carbon dioxide result from the combustion of fossil fuels for energy production. Photosynthesis has long been recognized as a means, at least in theory, to sequester anthropogenic carbon dioxide. Aquatic microalgae have been identified as fast growing species whose carbon fixing rates are higher than those of land-based plants by one order of magnitude. Physical Sciences Inc. (PSI), Aquasearch, and the Hawaii Natural Energy Institute at the University of Hawaii are jointly developing technologies for recovery and sequestration of CO{sub 2} from stationary combustion systems by photosynthesis of microalgae. The research is aimed primarily at demonstrating the ability of selected species of microalgae to effectively fix carbon from typical power plant exhaust gases. This report covers the reporting period 1 April to 30 June 2004 in which PSI, Aquasearch and University of Hawaii conducted their tasks. Based on the work during the previous reporting period, Aquasearch run further, pilot and full scale, carbon sequestration tests with actual propane combustion gases utilizing two different strains of microalgae. Aquasearch continued testing modifications to the coal combustor to allow for longer-term burns. Aquasearch also tested an alternative cell separation technology. University of Hawaii performed experiments at the Mera Pharmaceuticals facility in Kona in mid June to obtain data on the carbon venting rate out of the photobioreactor; gas venting rates were measured with an orifice flow meter and gas samples were collected for GC analysis to determine the carbon content of the vented gases.

Takashi Nakamura

2004-11-01T23:59:59.000Z

131

UNIT NAME: C-637 septic System REGULATORY STATUS: AOC  

NLE Websites -- All DOE Office Websites (Extended Search)

93 UNIT NUMBER: 189 UNIT NAME: C-637 septic System REGULATORY STATUS: AOC LOCATION: Inside plant security fence, east of the c-637 Cooling Tower Pumphouse. 50 feet wide by 100 feet...

132

Municipal Waste Combustion (New Mexico)  

Energy.gov (U.S. Department of Energy (DOE))

This rule establishes requirements for emissions from, and design and operation of, municipal waste combustion units. "Municipal waste"means all materials and substances discarded from residential...

133

Turbulent combustion  

SciTech Connect

Turbulent combustion is the dominant process in heat and power generating systems. Its most significant aspect is to enhance the burning rate and volumetric power density. Turbulent mixing, however, also influences the chemical rates and has a direct effect on the formation of pollutants, flame ignition and extinction. Therefore, research and development of modern combustion systems for power generation, waste incineration and material synthesis must rely on a fundamental understanding of the physical effect of turbulence on combustion to develop theoretical models that can be used as design tools. The overall objective of this program is to investigate, primarily experimentally, the interaction and coupling between turbulence and combustion. These processes are complex and are characterized by scalar and velocity fluctuations with time and length scales spanning several orders of magnitude. They are also influenced by the so-called {open_quotes}field{close_quotes} effects associated with the characteristics of the flow and burner geometries. The authors` approach is to gain a fundamental understanding by investigating idealized laboratory flames. Laboratory flames are amenable to detailed interrogation by laser diagnostics and their flow geometries are chosen to simplify numerical modeling and simulations and to facilitate comparison between experiments and theory.

Talbot, L.; Cheng, R.K. [Lawrence Berkeley Laboratory, CA (United States)

1993-12-01T23:59:59.000Z

134

Low-Temperature Automotive Diesel Combustion | Department of...  

Office of Environmental Management (EM)

in Low Temperature Automotive Diesel Combustion Systems Mixture Formation in a Light-Duty Diesel Engine Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments...

135

Rapid Deployment of Rich Catalytic Combustion  

SciTech Connect

The overall objective of this research under the Turbines Program is the deployment of fuel flexible rich catalytic combustion technology into high-pressure ratio industrial gas turbines. The resulting combustion systems will provide fuel flexibility for gas turbines to burn coal derived synthesis gas or natural gas and achieve NO{sub x} emissions of 2 ppmvd or less (at 15 percent O{sub 2}), cost effectively. This advance will signify a major step towards environmentally friendly electric power generation and coal-based energy independence for the United States. Under Phase 1 of the Program, Pratt & Whitney (P&W) performed a system integration study of rich catalytic combustion in a small high-pressure ratio industrial gas turbine with a silo combustion system that is easily scalable to a larger multi-chamber gas turbine system. An implementation plan for this technology also was studied. The principal achievement of the Phase 1 effort was the sizing of the catalytic module in a manner which allowed a single reactor (rather than multiple reactors) to be used by the combustion system, a conclusion regarding the amount of air that should be allocated to the reaction zone to achieve low emissions, definition of a combustion staging strategy to achieve low emissions, and mechanical integration of a Ceramic Matrix Composite (CMC) combustor liner with the catalytic module.

Richard S. Tuthill

2004-06-10T23:59:59.000Z

136

United States Industrial Motor Systems Market Opportunities Assessment...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Executive Summary (December 1998) More Documents & Publications United States Industrial Electric Motor Systems Market Opportunities Assessment Pulp and Paper Mills: Profiting...

137

Development of methods to predict agglomeration and deposition in fluidized-bed combustion systems (FBCS). Topical report  

SciTech Connect

The successful design and operation of advanced combustion systems require the ability to control and mitigate ash-related problems. The major ash-related problems are slag flow control, slag attack on the refractory, ash deposition on heat-transfer surfaces, corrosion and erosion of equipment materials, and emissions control. These problems are the result of physical and chemical interactions of the fuels, bed materials, and system components. The interactions that take place and ultimately control ash behavior in fluidized-bed combustion (FBC) systems are controlled by the abundance and association of the inorganic components in coal and by the system conditions. Because of the complexity of the materials and processes involved, the design and operations engineer often lacks the information needed to predict ash behavior and reduce ash-related problems. The deposition of ashes from the fluidized bed combustion of lignite and petroleum coke is described in this paper.

Mann, M.D.; Henderson, A.K.; Swanson, M.L.; Allan, S.E.

1996-02-01T23:59:59.000Z

138

Boosting Small Engines to High Performance- Boosting Systems and Combustion Development Methodology  

Energy.gov (U.S. Department of Energy (DOE))

Overview on combustion approaches and challenges for smaller boosted engines to improve vehicle fuel economy, particularly downsizing gasoline engines

139

Engine Combustion & Efficiency - FEERC  

NLE Websites -- All DOE Office Websites (Extended Search)

Engine Combustion & Efficiency Engine Combustion & Efficiency ORNL currently and historically supports the U.S. DOE on multi-cylinder and vehicle applications of diesel combustion, lean burn gasoline combustion, and low temperature combustion processes, and performs principal research on efficiency enabling technologies including emission controls, thermal energy recovery, and bio-renewable fuels. Research areas span from fundamental concepts to engine/vehicle integration and demonstration with a particular emphasis on the following areas: Thermodynamics for identifying and characterizing efficiency opportunities for engine-systems as well as the development of non-conventional combustion concepts for reducing fundamental combustion losses. Nonlinear sciences for improving the physical understanding and

140

Energy and mass flow computation in biomass computation in biomass combustion systems  

SciTech Connect

A computational technique which utilizes biomass ultimate analysis, gross heat of combustion from a bomb calorimeter, and moisture content was developed for balancing an empirical chemical equation and calculating the combustion temperature and exhaust composition. A single equation for relating the net heat of combustion of a biomass to moisture content was developed. A sample calculation is presented. 7 references.

Payne, F.A.

1984-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Combustion Control  

E-Print Network (OSTI)

using a liquid fuel. The air and fuel valve designs are vastly different, with different flow characteristics. These factors make the initial adjustment of the system difficult, and proper maintenance of ratio accuracy unlikely. Linked valves... casing of the fuel control regulator with the combustion air piping. The upstream pressure on the burner air orifice is applied to the main diaphragm of the pressure balanced regulator. Assuming sufficient gas pressure at the regulator inlet...

Riccardi, R. C.

1984-01-01T23:59:59.000Z

142

Phasor Measurement Unit Data in Power System State Estimation  

E-Print Network (OSTI)

by supervisory control and data acquisition (SCADA) devices. The incorporation of PMU measurementsPhasor Measurement Unit Data in Power System State Estimation Intermediate Project Report Power Center since 1996 PSERC #12;Power Systems Engineering Research Center Phasor Measurement Unit Data

143

Effect of ignition location on the in-process removal of combustion deposits from the output window of a gas turbine laser ignition system  

Science Journals Connector (OSTI)

The effect of ignition location on the effectiveness of combustion deposit removal from the reverse side of an optical window in a laser ignition system for use in gas turbines is presented. Such deposits consist of carbon and other by-products which accumulate on the walls of the chamber as a result of incomplete combustion. In laser based ignition systems this accumulation of combustion deposits has the potential to reduce the transmissive properties of the output window required for transmission of the laser radiation into the combustion chamber, adversely affecting the likelihood of successful ignition. In this work, a full empirical study into the in-process removal of combustion deposits from the reverse side of the optical window in a laser ignition system using a Q-switched Nd:YAG laser is presented, with an emphasis on the effect of ignition location on the effectiveness of combustion deposit removal. In addition, the mechanism of deposit removal is discussed.

J. Griffiths; J. Lawrence; P. Fitzsimons

2013-01-01T23:59:59.000Z

144

Zero Liquid Discharge (ZLD) System for Flue-Gas Derived Water From Oxy-Combustion Process  

SciTech Connect

Researchers at the National Energy Technology Laboratory (NETL) located in Albany, Oregon, have patented a process - Integrated Pollutant Removal (IPR) that uses off-the-shelf technology to produce a sequestration ready CO{sub 2} stream from an oxy-combustion power plant. Capturing CO{sub 2} from fossil-fuel combustion generates a significant water product which can be tapped for use in the power plant and its peripherals. Water condensed in the IPR{reg_sign} process may contain fly ash particles, sodium (from pH control), and sulfur species, as well as heavy metals, cations and anions. NETL is developing a treatment approach for zero liquid discharge while maximizing available heat from IPR. Current treatment-process steps being studied are flocculation/coagulation, for removal of cations and fine particles, and reverse osmosis, for anion removal as well as for scavenging the remaining cations. After reverse osmosis process steps, thermal evaporation and crystallization steps will be carried out in order to build the whole zero liquid discharge (ZLD) system for flue-gas condensed wastewater. Gypsum is the major product from crystallization process. Fast, in-line treatment of water for re-use in IPR seems to be one practical step for minimizing water treatment requirements for CO{sub 2} capture. The results obtained from above experiments are being used to build water treatment models.

Sivaram Harendra; Danylo Oryshchyn; Thomas Ochs; Stephen J. Gerdemann; John Clark

2011-10-16T23:59:59.000Z

145

ESTABLISHMENT OF AN ENVIRONMENTAL CONTROL TECHNOLOGY LABORATORY WITH A CIRCULATING FLUIDIZED-BED COMBUSTION SYSTEM  

SciTech Connect

The purpose of this report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the quarter January--March 2004. The following tasks have been completed. First, plans for the renovation of space for a new Combustion Laboratory for the CFBC Facility have progressed smoothly. Second, the design calculations, including the mass balances, energy balances, heat transfer, and strength calculations have been completed. Third, considerable modifications have been made on the draft design of the CFBC Facility based on discussions conducted during the project kick-off meeting held on January 13, 2004 at the National Energy Technology Laboratory (NETL). Comments received from various experts were also used to improve the design. Finally, the drawings of all assembly parts have been completed in order to develop specifications for the fabrication of individual parts. At the same time, the proposed work for the next quarter has been outlined in this report.

Wei-Ping Pan; Kunlei Liu; John T. Riley

2004-04-01T23:59:59.000Z

146

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect

Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this fourth quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, in-situ adaptive tabulation (ISAT) for efficient chemical rate storage and retrieval was further tested in the LES code. A more efficient PK binary tree data structure is being developed and implemented to replace the original BSP-tree structure. Implementation of the Linear Eddy Model (LEM) for subgrid chemistry has also started. In addition, Georgia Tech has shown that a chemical neural net (1-step chemistry) trained at certain turbulent conditions can be used at different turbulent conditions without expensive chemical kinetic integrations. Initial evaluations of the code accuracy have also been carried out. The evaluations cases included the unstable DOE-NETL combustor and a lid-driven cavity. Next quarter, the ISAT algorithm for efficient chemistry will be tested for the unstable DOE-NETL combustor. Initial flame calculations, with the LEM subgrid chemistry model are planned. Also, demonstration of the neural net approach, for chemical kinetics speed-up, should be demonstrated for more advanced chemistry (8-species and 19-species mechanisms).

Steve Cannon; Virgil Adumitroaie; Keith McDaniel; Cliff Smith

2001-10-01T23:59:59.000Z

147

ESTABLISHMENT OF AN ENVIRONMENTAL CONTROL TECHNOLOGY LABORATORY WITH A CIRCULATING FLUIDIZED-BED COMBUSTION SYSTEM  

SciTech Connect

This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period January 1, 2005 through March 31, 2005. The following tasks have been completed. First, the renovation of the new Combustion Laboratory is nearly complete, and the construction of the Circulating Fluidized-Bed (CFB) Combustor Building is in the final stages. Second, the fabrication and manufacture of the CFBC Facility is being discussed with a potential contractor. Discussions with potential contactor regarding the availability of materials and current machining capabilities have resulted in the modification of the original designs. The selection of the fabrication contractor for the CFBC Facility is expected during the next quarter. Third, co-firing experiments conducted with coal and chicken waste have been initiated in the laboratory-scale simulated fluidized-bed facility. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter is described in this report.

Wei-Ping Pan; Andy Wu; John T. Riley

2005-04-30T23:59:59.000Z

148

Development of high-temperature heat exchanger for hydrogen combustion turbine system  

SciTech Connect

New Rankine Cycle and Topping Regenerative Cycle are representative 500MW power generation systems for a hydrogen combustion turbine (HCT). The energy efficiency based on HHV of these is expected to be over 60% because the inlet temperature of turbine can be increased to 1,970K. These systems comprise various heat exchangers. Especially, the development of high temperature heat exchanger dealing with the high temperature and pressure steam is very important to realize the hydrogen combustion turbine system. The high-temperature heat exchanger of New Rankine Cycle is a supercritical heat recovery steam generator operating at pressure of 36MPa. This heat exchanger is heated by steam at temperature of 1,390K. On the other hand, Topping Regenerative Cycle has two high-temperature heat exchangers. One is a regenerator operating at pressure of 37MPa. The other is a regenerator operating at pressure of 5MPa. Both regenerators are heated by steam at temperature of 1,030K. The following are the principal development subject of high-temperature heat exchanger: (1) Improving the heat transfer characteristics to achieve the compact heat exchanger, and (2) Planning the heat exchanger structure suitable for the high thermal stress. To improve a heat transfer characteristic of the high-temperature heat exchangers, a parameter survey is conducted to optimize a tube arrangement and a fin configuration on tube outside and/or inside. The heat transfer areas are minimized through using the tubes with an extended heat transfer surface on both sides of a tube. Structural integrity is also estimated by conducting a structural analysis for the critical parts of the high-temperature heat exchangers.

Takakuwa, Akihiro; Mochida, Yoshio

1999-07-01T23:59:59.000Z

149

Diagnosis of a turbocharging system of 1MW internal combustion engine  

Science Journals Connector (OSTI)

A diagnostic procedure is presented purposely for the turbocharging system of 1MW internal combustion engine (I.C.E.) and specifically, for the filters and compressor modules. This study is part of a wider research activity, concerning the development of a diagnosis system dedicated to the cogenerative I.C.E. installed at the Engineering Faculty in Perugia. Firstly a 1-D thermodynamic model of the CHP engine working fluid was developed to simulate failure conditions of the turbocharging groups, which are not directly replicable on the I.C.E. to avoid plant stoppage. This model is able to simulate the degradation in performance of the engine components. It also takes into account the effect of compensation which the regulation system activates in case of efficiency loss or failure relative to filters or compressors. In order to identify and assess such failures, the fuzzy logic was chosen as the tool for the diagnosis system design. The developed diagnosis system displayed a good reliability degree with the 1-D thermodynamic model results, for operating conditions in correspondence of bad performance either on behalf of the filters or the compressor. Moreover, the procedure can be implemented in the plant monitoring system and provides in real-time diagnosis results about the status of the components and the need of maintenance, on the basis of few parameters already measured on the I.C.E.

L. Barelli; G. Bidini; F. Bonucci

2013-01-01T23:59:59.000Z

150

Capture and Sequestration of CO2 From Stationary Combustion Systems by Photosynthesis of Microalgae  

NLE Websites -- All DOE Office Websites (Extended Search)

Capture and Sequestration of CO Capture and Sequestration of CO 2 From Stationary Combustion Systems by Photosynthesis of Microalgae Takashi Nakamura (nakamura@psicorp.com; 925-743-1110) Constance Senior (senior@psicorp.com; 978-689-0003) Physical Sciences Inc Andover, MA 01810 Miguel Olaizola (molaizola@aquasearch.com; 808-326-9301 Michael Cushman (mcushman@aquasearch.com; 808-326-9301) Aquasearch Inc. Kailua-Kona, HI 96740 Stephen Masutani (masutan@wiliki.eng.hawaii.edu; 808-956-7388) University of Hawaii Honolulu, HI 96822 Introduction Emissions of carbon dioxide are predicted to increase this century 1 leading to increases in the concentrations of carbon dioxide in the atmosphere. While there is still much debate on the effects of increased CO 2 levels on global climate, many scientists agree that the projected increases could have a

151

Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System  

SciTech Connect

This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period October 1, 2005 through December 31, 2005. Work was performed on the following activities. First, the fabrication and manufacture of the CFBC Facility is nearly completed. The erection of the CFBC facility is expected to start in the second week of February, 2006. Second, effect of flue gas components on mercury oxidation was investigated in a drop tube reactor. As a first step, experiment for mercury oxidation by chlorine was investigated. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter is described in this report.

Wei-Ping Pan; Songgeng Li

2006-01-01T23:59:59.000Z

152

Task 2 Materials for Advanced Boiler and Oxy-combustion Systems (NETL-US)  

SciTech Connect

Exposures were completed to ~1400 hr. Analysis of kinetics are close to completion. No oxy-combustion gas phase effects were found at 700{degrees}C.

Holcomb, Gordon R. [NETL; Tylczak, Joseph [NETL

2013-08-28T23:59:59.000Z

153

Investigation of biomass combustion systems using CFD techniques: a parametric study of packed-bed burning characteristics  

Science Journals Connector (OSTI)

In this paper, mathematical equations governing the fluid flow, heat and mass transfer and heterogeneous reactions in packed-bed combustion systems are described and sub-models for individual processes are presented. A model estimating the mixing rate between the under-grate air and the released volatile gases is described. Parametric study was carried out to assess the effects of fuel moisture content, kinetic rate of devolatilisation, primary air flow rate and particle mixing levels caused by grate movement. Useful conclusions were drawn in terms of flame temperature, reaction zone thickness, mass loss rate, combustion staging and residual carbon in ash.

Yao Bin Yang; Jim Goodfellow; Vida N. Sharifi; Jim Swithenbank

2006-01-01T23:59:59.000Z

154

Method for simultaneously removing SO.sub.2 and NO.sub.X pollutants from exhaust of a combustion system  

DOE Patents (OSTI)

A method is disclosed for removing pollutants from the exhaust of combustion systems burning fuels containing substantial amounts of sulfur and nitrogen. An exemplary method of the invention involves the formation and reaction of a sorbent comprising calcium magnesium acetate (CMA). The CMA is either dry-sprayed (in the form of a fine powder) or wet-sprayed in an aqueous solution in a high temperature environment such as a combustion chamber. The latter technique is feasible since CMA is a uniquely water-soluble form of calcium and magnesium. When the dispersed particles of CMA are heated to a high temperature, fine calcium and magnesium oxide particles, which are hollow with thin and highly porous walls are formed, affording optimum external and internal accessibility for reacting with toxic gaseous emissions such as SO.sub.2. Further, the combustion of the organic acetate portion of the sorbent results in the conversion of NO.sub.x to N.sub.2.

Levendis, Yiannis A. (Boston, MA); Wise, Donald L. (Belmont, MA)

1994-05-17T23:59:59.000Z

155

Combustion Turbine CHP System for Food Processing Industry- Presentation by Frito-Lay North America, June 2011  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Combustion Turbine CHP System for Food Processing Industry, given by Kevin Chilcoat of Frito-Lay North America, at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011.

156

Mercury Emissions Control in Coal Combustion Systems Using Potassium Iodide: Bench-Scale and Pilot-Scale Studies  

E-Print Network (OSTI)

power plant exhaust gases using conventional air pollution control devices (APCDs) is significantly Act list of sources of hazardous air pollutants. Both the reversal and the CAMR were vacated by the UMercury Emissions Control in Coal Combustion Systems Using Potassium Iodide: Bench-Scale and Pilot

Li, Ying

157

DEVELOPMENT AND TESTING OF INDUSTRIAL SCALE, COAL FIRED COMBUSTION SYSTEM, PHASE 3  

SciTech Connect

In the second quarter of calendar year 1998, no work was performed on the present project. The 20 MMBtu/hr combustor-boiler facility was not operated during this period. The total test days on the Philadelphia facility to the end of June 1998 remained at 108 as in the previous quarter. Of these, 34 tests were part of the other DOE project. The test days on the other project are listed here because they demonstrate the durability of the combustor, which is one of the objectives of the present project. As noted previously, this exceeds the planned 63 test days for this project. All key project objectives have been exceeded including combustor durability, automated combustor operation, NO{sub x} emissions as low as 0.07 lb/MMBtu and SO{sub 2} emissions as low as 0.2 lb/MMBtu. In addition, a novel post-combustion NO{sub x} control process has been tested on a 37 MW and 100 MW utility boiler. Any further tests will depend on the results of evaluations of current and prior tests. The only effort remaining on this project is facility disassembly and Final Report. Also, as part of the commercialization effort for this combustor technology, Coal Tech is developing alternative designs of the combustor that allow its fabrication as substantially reduced costs from the present unit.

Dr. Bert Zauderer

1998-07-08T23:59:59.000Z

158

Low and High Temperature Combustion Chemistry of Butanol Isomers in Premixed Flames and Autoignition Systems  

SciTech Connect

Butanol is a fuel that has been proposed as a bio-derived alternative to conventional petroleum derived fuels. The structural isomer in traditional 'bio-butanol' fuel is n-butanol, but newer conversion technologies produce iso-butanol as a fuel. In order to better understand the combustion chemistry of bio-butanol, this study presents a comprehensive chemical kinetic model for all the four isomers of butanol (e.g., 1-, 2-, iso- and tert-butanol). The proposed model includes detailed high temperature and low temperature reaction pathways. In this study, the primary experimental validation target for the model is premixed flat low-pressure flame species profiles obtained using molecular beam mass spectrometry (MBMS). The model is also validated against previously published data for premixed flame velocity and n-butanol rapid compression machine and shock tube ignition delay. The agreement with these data sets is reasonably good. The dominant reaction pathways at the various pressures and temperatures studied are elucidated. At low temperature conditions, we found that the reaction of alphahydroxybutyl with O{sub 2} was important in controlling the reactivity of the system, and for correctly predicting C{sub 4} aldehyde profiles in low pressure premixed flames. Enol-keto isomerization reactions assisted by HO{sub 2} were also found to be important in converting enols to aldehydes and ketones in the low pressure premixed flames. In the paper, we describe how the structural features of the four different butanol isomers lead to differences in the combustion properties of each isomer.

Sarathy, S M; Pitz, W J; Westbrook, C K; Mehl, M; Yasunaga, K; Curran, H J; Tsujimura, T; Osswald, P; Kohse-Hoinghaus, K

2010-12-12T23:59:59.000Z

159

Study of hydrogen mixing within the combustion engineering system 80+ containment  

SciTech Connect

A scoping study is performed to determine how hydrogen distributes throughout an evolutionary, advanced pressurized water reactor (PWR) spherical containment given a variety of hydrogen inflows and delivery locations. The study uses MAAP and a preliminary containment design for the Combustion Engineering (C-E) System 80+{trademark} standard design as the bases for the detailed thermal-hydraulic analyses. Results are compared to applicable design criteria from the Advanced Light Water Reactor (ALWR) Requirements Document. The C-E System 80+ containment design is based on the Cherokee-Perkins System 80{sup R} spherical containment design, revised to accommodate ALWR Requirements Document design criteria. A feature of this design is the 500,000-gal in-containment refueling water storage tank (IRWST) located in the lower region of the containment building. This tank is the source for the safety injection and containment spray pumps, and the discharge location for the primary system safety and bleed valves. The containment design directs water accumulation on lower floors to the IRWST to preclude its depletion.

Hawley, J.T.; Hammersley, R.J.; Plys, M.G. (Fauske Associates, Inc., Burr Ridge, IL (USA))

1989-11-01T23:59:59.000Z

160

Aviation Combustion Toxicology: An Overview  

Science Journals Connector (OSTI)

......in a radiant heat furnace. Rats...the produced combustion products in...in both the combustion tube and radiant heat systems proved...literature data for CO2, low...acrolein, and heat expo- sures...primary toxic combustion gases and are...structures. The hydrocarbon constituents......

Arvind K. Chaturvedi

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A coal-fired combustion system for industrial process heating applications. Quarterly technical progress report, April 1992--June 1992  

SciTech Connect

PETC has implemented a number of advanced combustion research projects that will lead to the establishment of a broad, commercially acceptable engineering data base for the advancement of coal as the fuel of choice for boilers, furnaces, and process heaters. Vortec Corporation`s Phase III development contract DE-AC22-91PC91161 for a ``Coal-Fired Combustion System for Industrial Process Heating Applications`` is project funded under the DOE/PETC advanced combustion program. This advanced combustion system research program is for the development of innovative coal-fired process heaters which can be used for high temperature melting, smelling and waste vitrification processes. The process heater concepts to be developed are based on advanced glass melting and ore smelting furnaces developed and patented by Vortec Corporation. The process heater systems to be developed have multiple use applications; however, the Phase III research effort is being focused on the development of a process heater system to be used for producing value added vitrified glass products from boiler/incinerator ashes and industrial wastes. The primary objective of the Phase III project is to develop and integrate all the system components, from fuel through total system controls, and then test the complete system in order to evaluate its potential marketability. During the current reporting period, approval of Vortec`s Environmental Assessment (EA) required under the National Environmental Policy Act (NEPA) was approved. The EA approval cycle took approximately 9 months. The preliminary test program which was being held in abeyance pending approval of the EA was initiated. Six preliminary test runs were successfully competed during the period. Engineering and design activities in support of the Phase III proof of concept are continuing, and modifications to the existing test system configuration to allow performance of the preliminary tests were completed.

Not Available

1992-09-03T23:59:59.000Z

162

Method and system for the removal of oxides of nitrogen and sulfur from combustion processes  

DOE Patents (OSTI)

A process for removing oxide contaminants from combustion gas, and employing a solid electrolyte reactor, includes: (a) flowing the combustion gas into a zone containing a solid electrolyte and applying a voltage and at elevated temperature to thereby separate oxygen via the solid electrolyte, (b) removing oxygen from that zone in a first stream and removing hot effluent gas from that zone in a second stream, the effluent gas containing contaminant, (c) and pre-heating the combustion gas flowing to that zone by passing it in heat exchange relation with the hot effluent gas.

Walsh, John V. (Glendora, CA)

1987-12-15T23:59:59.000Z

163

Extractors manual for Fluidized-Bed Combustion Data Base System: Test Data Data Base. [FBC; planning  

SciTech Connect

Fluidized-bed combustion (FBC) technology is rapidly emerging as an acceptable alternative to conventional coal-fired boiler technology. To satisfy the engineering public's need for experimental data and to assist in the study of technical uncertainties in FBC technology, the Department of Energy (DOE) has initiated the development of a data system to store the results of Government-sponsored research. To capture the results of Government-sponsored FBC research programs, documents have been written for the TDDB and MPDB to specify the data that contractors need to report and the procedures for reporting them. The FBC documents identify and define the data that need to be reported for FBC projects so that the data entered into the TDDB and MPDB will meet the needs of the users of the FBC data system. This document addresses what information is needed and how it must be formatted so that it can be entered into the TDDB for FBC. The level of detail needed to satisfy the wide variety of potential users' needs is the primary consideration in determining the types and amounts of data to be stored. The TDDB was designed so that data could be stored at any level of detail. 3 figs., 26 tabs.

Not Available

1986-09-01T23:59:59.000Z

164

A three-beam water vapor sensor system for combustion diagnostics using a 1390 nm tunable diode laser  

SciTech Connect

H{sub 2}O(v) is an important species in combustion and hypersonic flow measurements because it is a primary combustion product. Measurements of water vapor can be used to determine performance parameters, such as extent and efficiency of combustion in propulsion and aerodynamics facilities. Water vapor concentration measurement in these high-temperature hypervelocity combustion conditions requires very high sensitivity and fast time response. A three-beam diode laser H{sub 2}O(v) measurement system for nonintrusive combustion diagnostics has been developed at NASA Langley Research Center and successfully tested and installed at GASL NASA HYPULSE facility for routine operation. The system was built using both direct laser absorption spectroscopy and frequency modulation laser spectroscopy. The output beam from a distributed feedback (DFB) InGaAsP diode laser (emitting around 1.39 {micro}m) is split into three equal-powered equal-distanced parallel beams with separation of 9 mm. With three beams, the authors are able to obtain water vapor number densities at three locations. Frequency modulation spectroscopy technique is used to achieve high detection sensitivity. The diode laser is modulated at radio frequency (RF), while the wavelength of the diode laser is tuned to scan over a strong water vapor absorption line. The detected RF signal is then demodulated at the fundamental frequency of the modulation (one-F demodulation). A working model and a computer software code have been developed for data process and data analysis. Water vapor number density measurements are achieved with consideration of temperature dependence. Experimental results and data analysis will be presented.

Wang, L.G. [Coll. of William and Mary, Williamsburg, VA (United States). Dept. of Physics; Vay, S. [National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center

1995-12-31T23:59:59.000Z

165

Systems-level design of ion transport membrane oxy-combustion power plants  

E-Print Network (OSTI)

Oxy-fuel combustion, particularly using an integrated oxygen ion transport membrane (ITM), is a thermodynamically attractive concept that seeks to mitigate the penalties associated with CO 2 capture from power plants. ...

Mancini, Nicholas D. (Nicholas David)

2011-01-01T23:59:59.000Z

166

Task 2: Materials for Advanced Boiler and Oxy-combustion Systems  

SciTech Connect

Characterize advanced boiler (oxy-fuel combustion, biomass cofired) gas compositions and ash deposits Generate critical data on the effects of environmental conditions; develop a unified test method with a view to future standardisation

G. R. Holcomb and B. McGhee

2009-05-01T23:59:59.000Z

167

Extractors manual for Fluidized-Bed Combustion Data Base System: Major Plants Data Base. [FBC; planning  

SciTech Connect

Fluidized-bed combustion (FBC) technology is rapidly emerging as an acceptable alternative to conventional coal-fired boiler technology. To satisfy the engineering public's need for experimental data and to assist in the study of technical uncertainties in FBC technology, the Department of Energy (DOE) has initiated the development of a data system to store the results of Government-sponsored research. The FBC Data System consists of FBC data stored in the MPDB, TDDB, and MMDB; it will contain both atmospheric and pressurized FBC facilities. To capture the results of Government-sponsored FBC programs, documents have been written for the MPDB and TDDB to specify the data that contractors need to report and the procedures for reporting them. The FBC documents identify and define the data that need to be reported for FBC projects so that the data entered into the MPDB and TDDB will meet the needs of the users of the FBC Data System. This document identifies what information is needed and how it must be formatted so that it can be entered into the MPDB for FBC demonstration and commercial plants. The structure of the MPDB is shown in Figure 1-1. Section 2.0 describes the needs of potential users of the FBC Data System. Section 3.0 explains how the contractor should report and format this data so that it can be entered into the MPDB. Section 4.0 explains the quality control procedures that should be used to ensure the integrity of the data that is stored in the MPDB. 2 figs., 28 tabs.

Not Available

1986-09-01T23:59:59.000Z

168

Corrosion performance of structural alloys for oxy-fuel combustion systems.  

SciTech Connect

The U.S. Department of Energy (DOE) Office of Fossil Energy is intensely promoting research and development of oxyfuel combustion systems that employ oxygen, instead of air, for burning the fuel. The resulting flue gas primarily consists of H{sub 2}O and CO{sub 2} that facilitates sequestration of CO{sub 2}, thereby leading to reduction in CO{sub 2} emissions. Also, as the oxidant is bereft of N{sub 2}, NO{sub x} emissions are minimized to a great extent from the exhaust gas. Studies at NETL have indicated that oxy-fuel combustion can increase efficiency in the power plants from the current 30-35% to 50-60%. However, the presence of H{sub 2}O/CO{sub 2} and trace constituents like nitrogen and sulfur in the environment at the operating temperatures and pressures can have adverse effects on the corrosion and mechanical properties of structural alloys. Thus, there is a critical need to evaluate the response of structural and turbine materials in simulated H{sub 2}O/CO{sub 2} environments in an effort to select materials that have adequate high temperature mechanical properties and environmental performance. During the past year, a program was initiated to evaluate the corrosion performance of structural alloys in CO{sub 2} and CO{sub 2}-steam environments at elevated temperatures. Materials selected for the study include intermediate-chromium ferritic steels, Fe-Cr-Ni heat-resistant alloys, and nickelbased superalloys. Coupon specimens of several of the alloys were exposed to pure CO{sub 2} at temperatures between 650 and 850C for times up to 1450 h. The corrosion tests in CO{sub 2}-50% steam environment was conducted at temperatures between 650 and 850C for times up to 1250 h. The steam for the experiment was generated by pumping distilled water and converting it to steam in the preheat portion of the furnace, ahead of the specimen exposure location. Preliminary results will be presented on weight change, scale thickness, internal penetration, and microstructural characteristics of corrosion products.

Natesan, K.; Rink, D. L.; Nuclear Engineering Division

2007-01-01T23:59:59.000Z

169

NETL: Staged, High-Pressure Oxy-Combustion Technology: Development and  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxy-Combustion CO2 Emissions Control Oxy-Combustion CO2 Emissions Control Staged, High-Pressure Oxy-Combustion Technology: Development and Scale-up Project No.: DE-FE0009702 Washington University in St. Louis is developing a unique pressurized system to capture carbon from coal-fired power plants that incorporates a fuel-staged combustion approach. By staging the combustion, the temperature and heat transfer can be controlled. The potential benefits of the process are: higher efficiency, reduced process gas volume, increased radiative heat transfer, reduced oxygen demands, reduced capital equipment costs, increased CO2 purity entering the carbon compression and purification unit, and reduced auxiliary power demands. These benefits are expected to yield a lower cost of electricity than alternative approaches to pressurized oxy-combustion.

170

Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications  

DOE Patents (OSTI)

An air supply control system for selectively supplying ambient air, oxygen enriched air and nitrogen enriched air to an intake of an internal combustion engine includes an air mixing chamber that is in fluid communication with the air intake. At least a portion of the ambient air flowing to the mixing chamber is selectively diverted through a secondary path that includes a selectively permeable air separating membrane device due a differential pressure established across the air separating membrane. The permeable membrane device separates a portion of the nitrogen in the ambient air so that oxygen enriched air (permeate) and nitrogen enriched air (retentate) are produced. The oxygen enriched air and the nitrogen enriched air can be selectively supplied to the mixing chamber or expelled to atmosphere. Alternatively, a portion of the nitrogen enriched air can be supplied through another control valve to a monatomic-nitrogen plasma generator device so that atomic nitrogen produced from the nitrogen enriched air can be then injected into the exhaust of the engine. The oxygen enriched air or the nitrogen enriched air becomes mixed with the ambient air in the mixing chamber and then the mixed air is supplied to the intake of the engine. As a result, the air being supplied to the intake of the engine can be regulated with respect to the concentration of oxygen and/or nitrogen.

Poola, Ramesh B. (Woodridge, IL); Sekar, Ramanujam R. (Naperville, IL); Cole, Roger L. (Elmhurst, IL)

1997-01-01T23:59:59.000Z

171

Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System  

SciTech Connect

This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period July 1, 2005 through September 30, 2005. The following tasks have been completed. First, the construction of the Circulating Fluidized-Bed (CFB) Combustor Building was completed. The experimental facilities have been moved into the CFB Combustor Building. Second, the fabrication and manufacture of the CFBC Facility is in the final stage and is expected to be completed before November 30, 2005. Third, the drop tube reactor has been remodeled and installed to meet the specific requirements for the investigation of the effects of flue gas composition on mercury oxidation. This study will start in the next quarter. Fourth, the effect of sulfur dioxide on molecular chlorine via the Deacon reaction was investigated. The experimental results from this study are presented in this report. Finally, the proposed work for the next quarter is described in this report.

Wei-Ping Pan; Songgeng Li; John T. Riley

2005-10-01T23:59:59.000Z

172

Combustion engine with fuel injection system, and a spray valve for such an engine  

SciTech Connect

This paper describes a fuel system for a combustion engine have a cylinder with an air inlet passage. It comprises: a fuel spray valve having a fuel injection nozzle for spraying fuel into the cylinder air inlet passage and having a fuel spray valve passage leading to the nozzle, means for mounting the fuel spray valve to position the nozzle to open into the cylinder air inlet passage adjacent the cylinder, a fuel pump for providing fuel under pressure to the fuel spray valve passage to be sprayed from the fuel spray valve nozzle, and a fuel heating device connectable to an electrical power supply and disposed adjacent to the valve to be energized for heating the fuel to enhance finer spraying thereof by the fuel spray valve nozzle, the fuel heating device comprising means defining a spiral fuel flow path of selected length connected to and coaxial with the fuel spray valve passage to dispose the selected length of fuel flow path closely adjacent to the fuel spray valve passage, and a fuel heating element comprising a thermistor of a ceramic material of positive temperature coefficient of resistivity arranged to heat the selected length of the spiral fuel flow path to transfer heat to the fuel flowing in the spiral fuel flow path throughout the selected length of the spiral fuel flow path to substantially heat the fuel at a location closely adjacent to the fuel spray valve passage to enhance vaporizing of fuel being sprayed from the valve nozzle.

Wechem, G.V.; Beunk, G.; Van Den Elst, F.; Gerson, P.M.

1991-10-08T23:59:59.000Z

173

Implementation of the Laboratory Air Handling Unit Systems (LAHU)  

E-Print Network (OSTI)

Implementation of the Laboratory Air Handling Unit Systems (LAHU) Y. Cui Graduate Student Energy Systems Laboratory University of Nebraska-Lincoln Omaha, NE, USA M. Liu, Ph.D., P.E. Associate Professor Energy Systems Laboratory...-around coils [18, 19], the variable air volume (VAV) fume hoods [8-16] and the usage-based control devices (UBC) [17]. These measures have effectively reduced the cooling energy, preheat energy and fan power consumption, and sometime, improved indoor...

Cui, Y.; Liu, M.; Conger, K.

2003-01-01T23:59:59.000Z

174

United Solar Systems Corp USSC aka Bekaert ECD Solar Systems LLC | Open  

Open Energy Info (EERE)

Solar Systems Corp USSC aka Bekaert ECD Solar Systems LLC Solar Systems Corp USSC aka Bekaert ECD Solar Systems LLC Jump to: navigation, search Name United Solar Systems Corp (USSC) (aka Bekaert ECD Solar Systems LLC) Place Middletown Springs, Vermont Zip VT 05757 Product Originally a JV between ECD and Bekaert to manufacture, market and sell photovoltaic products and systems References United Solar Systems Corp (USSC) (aka Bekaert ECD Solar Systems LLC)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. United Solar Systems Corp (USSC) (aka Bekaert ECD Solar Systems LLC) is a company located in Middletown Springs, Vermont . References ↑ "[ United Solar Systems Corp (USSC) (aka Bekaert ECD Solar Systems LLC)]"

175

Forward and reverse combustion gasification of coal with production of high-quality syngas in a simulated pilot system for in situ gasification  

Science Journals Connector (OSTI)

Abstract This research focused on the feasibility and stability of applying the forward and reverse combustion approach to the in situ gasification of lignite and bituminous coal with oxygen or oxygensteam mixtures as gasification agents, especially reverse combustion gasification. A high-quality syngas (H2 and CO) could be obtained using the reverse combustion gasification technique combined with forward combustion gasification in a pilot system for in situ gasification. The gasification time was extended more than 25% using the reverse combustion approach. The controlling conditions for reverse combustion gasification were obtained by comparing and analyzing experimental data. The results show the relationship between the inject gas flow within certain limits and velocity of the gasification flame was linear during reverse combustion. The underground conditions of the coal seam and strata were simulated in a pilot-scale underground gasifier during experiments. The combustion gasification of coal was carried out experimentally for over 5days. The average effective content (H2 and CO) of syngas was in the range of 6070%, meeting the requirement of synthesis gas. The optimal ranges of gasifying lignite and bituminous coal were found to be 1.52.0 and 1.31.75, respectively. The product gas flow was proportional to oxygen blast. These are expected to provide useful guidance on practical underground coal gasification operations and to give experimental evidence in support of theory.

Yong Cui; Jie Liang; Zhangqing Wang; Xiaochun Zhang; Chenzi Fan; Dongyu Liang; Xuan Wang

2014-01-01T23:59:59.000Z

176

Advances in pulverized coal combustion  

SciTech Connect

A combustion system has been developed to operate cost effectively in the difficult regulatory and economic climate of the 1980's. The system is designed to reduce auxiliary fuel oil comsumption by at least 30% while meeting all relevant emissions limits. This is achieved with the fewest components consistent with practical reliable design criteria. The Controlled Flow Split/Flame low NO/sub x/ burner, MBF pulverizer and Two-Stage ignition system are integrated into a mutually supporting system which is applicable to both new steam generators and, on a retrofit basis, to existing units. In the future, a pulverized coal ignition system will be available to eliminate fuel oil use within the boiler.

Vatsky, J.

1981-01-01T23:59:59.000Z

177

High-bandwidth Modulation of H2/Syngas Fuel to Control Combustion Dynamics in Micro-Mixing Lean Premix Systems  

SciTech Connect

The goal of this program was to develop and demonstrate fuel injection technologies that will facilitate the development of cost-effective turbine engines for Integrated Gasification Combined Cycle (IGCC) power plants, while improving efficiency and reducing emissions. The program involved developing a next-generation multi-point injector with enhanced stability performance for lean premix turbine systems that burn hydrogen (H2) or synthesis gas (syngas) fuels. A previously developed injector that demonstrated superior emissions performance was improved to enhance static flame stability through zone staging and pilot sheltering. In addition, piezo valve technology was implemented to investigate the potential for enhanced dynamic stability through high-bandwidth modulation of the fuel supply. Prototype injector and valve hardware were tested in an atmospheric combustion facility. The program was successful in meeting its objectives. Specifically, the following was accomplished: Demonstrated improvement of lean operability of the Parker multi-point injector through staging of fuel flow and primary zone sheltering; Developed a piezo valve capable of proportional and high-bandwidth modulation of gaseous fuel flow at frequencies as high as 500 Hz; The valve was shown to be capable of effecting changes to flame dynamics, heat release, and acoustic signature of an atmospheric combustor. The latter achievement indicates the viability of the Parker piezo valve technology for use in future adaptively controlled systems for the mitigation of combustion instabilities, particularly for attenuating combustion dynamics under ultra-lean conditions.

Jeff Melzak; Tim Lieuwen; Adel Mansour

2012-01-31T23:59:59.000Z

178

Improve Your Boiler's Combustion Efficiency  

SciTech Connect

This revised ITP tip sheet on boiler combustion efficiency provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

179

Advanced Combustion  

SciTech Connect

Topics covered in this presentation include: the continued importance of coal; related materials challenges; combining oxy-combustion & A-USC steam; and casting large superalloy turbine components.

Holcomb, Gordon R. [NETL

2013-03-05T23:59:59.000Z

180

Transformations of inorganic coal constituents in combustion systems. Volume 2, Sections 6 and 7: Final report  

SciTech Connect

Results from an experimental investigation of the mechanisms governing the ash aerosol size segregated composition resulting from the combustion of pulverized coal in a laboratory scale down-flow combustor are described. The results of modeling activities used to interpret the results of the experiments conducted under his subtask are also described in this section. Although results from the entire program are included, Phase II studies which emphasized: (1) alkali behavior, including a study of the interrelationship between potassium vaporization and sodium vaporization; and (2) iron behavior, including an examination of the extent of iron-aluminosilicate interactions, are highlighted. Idealized combustion determination of ash particle formation and surface stickiness are also described.

Helble, J.J. [ed.; Srinivasachar, S.; Wilemski, G.; Boni, A.A. [PSI Technology Co., Andover, MA (United States); Kang, Shin-Gyoo; Sarofim, A.F.; Graham, K.A.; Beer, J.M. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Peterson, T.W.; Wendt, J.O.L.; Gallagher, N.B.; Bool, L. [Arizona Univ., Tucson, AZ (United States); Huggins, F.E.; Huffman, G.P.; Shah, N.; Shah, A. [Kentucky Univ., Lexington, KY (United States)

1992-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

A portable measurement system for power profiling of processing units  

Science Journals Connector (OSTI)

Abstract The paper deals with the design and the metrologic characterization of a portable power consumption measurement system capable to correlate the average power consumption of a central processing unit to processor performance. A survey of power measurement systems designed for the evaluation of computer energy performance is provided. The design steps for the proposed power measurement system and its comprehensive hardware and software descriptions are reported. Furthermore, a calibration procedure of the power measurement system is described. Five benchmark tests have been executed on an Intel Pentium D processor and the measured power loads are reported and discussed.

F. Picariello; S. Rapuano; U. Villano

2014-01-01T23:59:59.000Z

182

DEVELOPMENT OF FINE PARTICULATE EMISSION FACTORS AND SPECIATION PROFILES FOR OIL AND GAS-FIRED COMBUSTION SYSTEMS  

SciTech Connect

In 1997, the United States Environmental Protection Agency (EPA) promulgated new National Ambient Air Quality Standards (NAAQS) for particulate matter, including for the first time particles with aerodynamic diameter smaller than 2.5 micrometers ({micro}m) referred to as PM2.5. PM2.5 in the atmosphere also contributes to reduced atmospheric visibility, which is the subject of existing rules for siting emission sources near Class 1 areas and new Regional Haze rules. There are few existing data regarding emissions and characteristics of fine aerosols from oil, gas and power generation industry combustion sources, and the information that is available is generally outdated and incomplete. Traditional stationary source air emission sampling methods tend to underestimate or overestimate the contribution of the source to ambient aerosols because they do not properly account for primary aerosol formation, which occurs after the gases leave the stack. Primary aerosol includes both filterable particles that are solid or liquid aerosols at stack temperature plus those that form as the stack gases cool through mixing and dilution processes in the plume downwind of the source. These deficiencies in the current methods can have significant impacts on regulatory decision-making. PM2.5 measurement issues were extensively reviewed by the American Petroleum Institute (API) (England et al., 1998), and it was concluded that dilution sampling techniques are more appropriate for obtaining a representative particulate matter sample from combustion systems for determining PM2.5 emission rate and chemical speciation. Dilution sampling is intended to collect aerosols including those that condense and/or react to form solid or liquid aerosols as the exhaust plume mixes and cools to near-ambient temperature immediately after the stack discharge. These techniques have been widely used in recent research studies. For example, Hildemann et al. (1994) and McDonald et al. (1998) used filtered ambient air to dilute the stack gas sample followed by 80-90 seconds residence time to allow aerosol formation and growth to stabilize prior to sample collection and analysis. More accurate and complete emissions data generated using the methods developed in this program will enable more accurate source-receptor and source apportionment analysis for PM2.5 National Ambient Air Quality Standards (NAAQS) implementation and streamline the environmental assessment of oil, gas and power production facilities. The overall goals of this program were to: (1) Develop improved dilution sampling technology and test methods for PM2.5 mass emissions and speciation measurements, and compare results obtained with dilution and traditional stationary source sampling methods. (2) Develop emission factors and speciation profiles for emissions of fine particulate matter, especially organic aerosols, for use in source-receptor and source apportionment analyses. (3) Identify and characterize PM2.5 precursor compound emissions that can be used in source-receptor and source apportionment analyses.

Glenn C. England

2004-10-20T23:59:59.000Z

183

Comparison of Conventional and Catalytic in Situ Combustion Processes for Oil Recovery  

Science Journals Connector (OSTI)

Although combustion and oxidation processes for oil recovery have traditionally been associated with heavy oil, it has been demonstrated recently that air injection into light oil reservoirs can provide good recoveries,(10, 11) while Al -Saffar et al.(12) have shown that the separation of a light oil fractions into individual SARA fractions followed by combustion can provide useful information on this light oil oxidation process. ... The system consists of the following interrelated parts: combustion cell, flow metering and pressure regulation units, temperature measurement and control, fluid production unit, and gas analysis unit. ... The combustion processes were very similar because the sample beds in all experiments were identical and the same processing parameters were used. ...

Musa B. Abuhesa; R. Hughes

2008-12-08T23:59:59.000Z

184

Energy exploitation of acid gas with high H2S content by means of a chemical looping combustion system  

Science Journals Connector (OSTI)

Abstract In gas and petroleum industry, the waste gas stream from the sweetening process of a sour natural gas stream is commonly referred as acid gas. Chemical Looping Combustion (CLC) technology has the potential to exploit the combustible fraction of acid gas, H2S, to produce energy obtaining a flue gas highly concentrated on CO2 and SO2, which can be cost-effectively separated for subsequent applications, such as sulfuric acid production. At the same time, a concentrated CO2 stream ready for storage is obtained. The resistance of oxygen carriers to sulfur becomes crucial when an acid gas is subjected to a CLC process since the H2S content can be very high. In this work, a total of 41h of continuous operation with acid gas and H2S concentrations up to 20vol.% has been carried out in a 500 Wth CLC unit with two oxygen carriers based on Cu (Cu14?Al) and Fe (Fe20?Al). The formation of copper sulfides and the SO2 emissions in the air reactor made the Cu14?Al material not adequate for the process. In contrast, excellent results were obtained during acid gas combustion with the Fe20?Al oxygen carrier. H2S was fully burnt to SO2 in the fuel reactor at all operating conditions, SO2 was never detected in the gas outlet stream of the air reactor, and iron sulfides were never formed even at H2S concentrations as high as 20vol.%. Furthermore, it was found that a H2S content of 20vol.% in the acid gas was high enough to turn the CLC process into an auto-thermal process. Based on these results, it can be concluded that the Fe-based materials prepared by impregnation are very adequate to exploit the energy potential of acid gas mixtures with CO2 capture.

F. Garca-Labiano; L.F. de Diego; P. Gayn; A. Abad; A. Cabello; J. Adnez; G. Sprachmann

2014-01-01T23:59:59.000Z

185

Integrated defueling system for Three Mile Island Unit 2  

SciTech Connect

The unique clean-up requirements of Three Mile Island Unit 2 have posed first-of-a-kind challenges for the equipment, tools, and operators involved in the defueling effort. Various equipment components and specialty remote tools were designed as an integrated defueling system to provide a means of safely working above the reactor and removing core debris. The basic defueling system consists of support equipment and specialty remote tools for specific operations. This paper describes the different equipment and tools, and explains the key interfaces and features of the integrated defueling system.

Brown, D.A.; Gallagher, R.E.; Rider, R.L.

1986-01-01T23:59:59.000Z

186

Development of thermoelectric power generation system utilizing heat of combustible solid waste  

SciTech Connect

The paper presents the development of thermoelectric power generation system utilizing heat of municipal solid waste. The systematic classification and design guideline are proposed in consideration of the characteristics of solid waste processing system. The conceptual design of thermoelectric power generation system is carried out for a typical middle scale incinerator system (200 ton/day) by the local model. Totally the recovered electricity is 926.5 kWe by 445 units (569,600 couples). In order to achieve detailed design, one dimensional steady state model taking account of temperature dependency of the heat transfer performance and thermoelectric properties is developed. Moreover, small scale on-site experiment on 60 W class module installed in the real incinerator is carried out to extract various levels of technological problems. In parallel with the system development, high temperature thermoelectric elements such as Mn-Si and so on are developed aiming the optimization of ternary compound and high performance due to controlled fine-grain boundary effect. The manganese silicide made by shrinking-rate controlled sintering method performs 5 ({mu}W/cm K{cflx 2}) in power factor at 800 K. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Kajikawa, T.; Ito, M.; Katsube, I. [Shonan Institute of Technology, Fujisawa, Kanagawa, 251 (Japan); Shibuya, E. [NKK Corporation, Yokohama, Kanagawa, 230 (Japan)

1994-08-10T23:59:59.000Z

187

Advanced Combustion Technology to Enable High Efficiency Clean...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Combustion System + Air Handling Air Handling + Sensors + Calibration Low P, High Flow Rate EGR + VVA - Simulated Robustness Advanced Combustion Concepts - Simulated 0.0...

188

High Efficiency Clean Combustion for Heavy-Duty Engine  

Energy.gov (U.S. Department of Energy (DOE))

Explore advancements in engine combustion systems using high-efficiency clean combustion (HECC) techniques to minimize engine-out emissions while optimizing fuel economy.

189

Fuel Effects on Advanced Combustion Engines | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

More Documents & Publications Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research Greenpower Trap Mufflerl System Low-Temperature Diesel Combustion...

190

DEVELOPMENT AND TESTING OF INDUSTRIAL SCALE, COAL FIRED COMBUSTION SYSTEM, PHASE 3  

SciTech Connect

In the second half of calendar year 1998, no work was performed on the present project. The 20 MMBtu/hr combustor-boiler facility was operated for 11 tests, primarily with Coal Tech resources on biomass combustion and gasification. The total test days on the Philadelphia facility to the end of August 1998 was 119. Of these, 36 tests were part of another DOE project on sulfur retention is slag, and 8 were on an in-house biomass combustion effort. The test days on the other project are listed here because they demonstrate the durability of the combustor, which is one of the objectives of the present project. Also, the test work of 1998 revealed for the first time the major potential of this combustor for biomass combustion. These tests are double the 63 tests in the original plan for this project. All key project objectives have been exceeded including combustor durability, automated combustor operation, NO{sub x} emissions as low as 0.07 lb/MMBtu and SO{sub 2} emissions as low as 0.2 lb/MMBtu. In addition, a novel post-combustion NOx control process has been tested on a 37 MW and 100 MW utility boiler. The only effort remaining on this project is facility disassembly and Final Report. However, as part of the commercialization effort for this combustor technology, Coal Tech is planning to maintain the combustor facility in an operational mode at least through 2001. Coal Tech is focusing on utilizing the combustor with biomass fuels in very low cost, small (1 MW nominal) steam power plants. Worldwide application of this technology would have a major impact in reduction of greenhouse gas emissions because the energy content of agricultural biomass is equal to the energy content of the USA's annual coal production.

Dr. Bert Zauderer

1999-03-11T23:59:59.000Z

191

Modeling the behavior of selenium in Pulverized-Coal Combustion systems  

SciTech Connect

The behavior of Se during coal combustion is different from other trace metals because of the high degree of vaporization and high vapor pressures of the oxide (SeO{sub 2}) in coal flue gas. In a coal-fired boiler, these gaseous oxides are absorbed on the fly ash surface in the convective section by a chemical reaction. The composition of the fly ash (and of the parent coal) as well as the time-temperature history in the boiler therefore influences the formation of selenium compounds on the surface of the fly ash. A model was created for interactions between selenium and fly ash post-combustion. The reaction mechanism assumed that iron reacts with selenium at temperatures above 1200 C and that calcium reacts with selenium at temperatures less than 800 C. The model also included competing reactions of SO{sub 2} with calcium and iron in the ash. Predicted selenium distributions in fly ash (concentration versus particle size) were compared against measurements from pilot-scale experiments for combustion of six coals, four bituminous and two low-rank coals. The model predicted the selenium distribution in the fly ash from the pilot-scale experiments reasonably well for six coals of different compositions. (author)

Senior, Constance; Otten, Brydger Van; Wendt, Jost O.L.; Sarofim, Adel [Reaction Engineering International, 77 W. 200 South, Salt Lake City, UT 84101 (United States)

2010-11-15T23:59:59.000Z

192

Adapting the International System of Units to the twenty-first century  

Science Journals Connector (OSTI)

...Discussion Meeting on The new SI: units of measurement based on fundamental constants...actually fixes the value of the unit of energy per temperature interval...the new SI, electromagnetic measurements and units will be brought into the system...

2011-01-01T23:59:59.000Z

193

Flow-Assisted Flame Propagation Through a Porous Combustible in Microgravity  

E-Print Network (OSTI)

fuel mass flux. The heat of combustion is constant and knownrespectively, Q is the heat of combustion per unit mass ofvelocities. The heat of combustion is set to the approximate

Bar-Ilan, Amnon; Rich, David B; Rein, Guillermo; Fernandez-Pello, Carlos; Hanai, H.; Niioka, T.

2002-01-01T23:59:59.000Z

194

Combustion Engine  

Energy.gov (U.S. Department of Energy (DOE))

Pictured here is an animation showing the basic mechanics of how an internal combustion engine works. With support from the Energy Department, General Motors researchers developed a new technology ...

195

Market and equipment performance analysis for the application of coal-based fuels/advanced combustion systems: Commercial and small industrial applications: Volume B, Appendices  

SciTech Connect

In March 1985, Burns and Roe Services Corporation (BRSC) under Contract No. AC22-84PC72571 with the US Department of Energy, Pittsburgh Energy Technology Center (DOE/PETC) initiated a task entitled ''Market and Equipment Performance Analysis for the Application of Coal-Based Fuels/Advanced Combustion Systems.'' This volume contains the following Appendices: Commercial sector applications of coal based fuels and advanced technologies, EOS Technologies, Inc.; Estimation of fuel use and population for industrial boilers <50 mm Btu/hr and direct fired combustors <100 mm Btu/hr firing oil and gas, PEI Associates; Characteristics of oil and gas fired boilers; Characteristics of oil and gas fired process heaters; Environmental permitting considerations; States air emission rules and regulations applying to commercial/industrial boilers and process heaters <100 mm Btu/hr heat input; Advanced coal combustion systems; Application of advanced coal combustion systems to watertube boilers; Application of advanced coal combustion systems to firetube boilers; and Application of advanced coal combustion systems to process heaters.

Not Available

1986-05-01T23:59:59.000Z

196

Method and system for low-NO.sub.x dual-fuel combustion of liquid and/or gaseous fuels  

SciTech Connect

A method and apparatus for combustion in which a pressurized preheated liquid fuel is atomized and a portion thereof flash vaporized, creating a mixture of fuel vapor and liquid droplets. The mixture is mixed with primary combustion oxidant, producing a fuel/primary oxidant mixture which is then injected into a primary combustion chamber in which the fuel/primary oxidant mixture is partially combusted, producing a secondary gaseous fuel containing hydrogen and carbon oxides. The secondary gaseous fuel is mixed with a secondary combustion oxidant and injected into the second combustion chamber wherein complete combustion of the secondary gaseous fuel is carried out. The resulting second stage flue gas containing very low amounts of NO.sub.x is then vented from the second combustion chamber.

Gard, Vincent; Chojnacki, Dennis A; Rabovitser, Ioseph K

2014-12-02T23:59:59.000Z

197

Microsoft Word - 41890_PW_Catalytic Combustion_Factsheet_Rev01_12-03.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Deployment of Rich Catalytic Combustion Deployment of Rich Catalytic Combustion DE-FC26-03NT41890 I. PROJECT PARTICIPANTS A. Prime: United Technologies Corporation through its Pratt and Whitney Division B. Sub-award: Precision Combustion, Incorporated II. PROJECT DESCRIPTION A. Objectives: Create an Implementation Plan and Integration Study for rich catalytic combustion as applied to industrial gas turbines fired on both natural gas and coal derived synthesis gas. The overall goal is a combustion system that will be capable of NOx less than 2 ppmvd. at 15% oxygen in an F-class gas turbine without exhaust gas after-treatment. B. Background/relevancy: The objective of the Turbines (HEET) program is to create the necessary technology base leading to Vision 21 (V21) goals. V21

198

CONCEPTUAL STUDIES OF A FUEL-FLEXIBLE LOW-SWIRL COMBUSTION SYSTEM FOR THE GAS TURBINE IN CLEAN COAL POWER PLANTS  

SciTech Connect

This paper reports the results of preliminary analyses that show the feasibility of developing a fuel flexible (natural gas, syngas and high-hydrogen fuel) combustion system for IGCC gas turbines. Of particular interest is the use of Lawrence Berkeley National Laboratory's DLN low swirl combustion technology as the basis for the IGCC turbine combustor. Conceptual designs of the combustion system and the requirements for the fuel handling and delivery circuits are discussed. The analyses show the feasibility of a multi-fuel, utility-sized, LSI-based, gas turbine engine. A conceptual design of the fuel injection system shows that dual parallel fuel circuits can provide range of gas turbine operation in a configuration consistent with low pollutant emissions. Additionally, several issues and challenges associated with the development of such a system, such as flashback and auto-ignition of the high-hydrogen fuels, are outlined.

Smith, K.O.; Littlejohn, David; Therkelsen, Peter; Cheng, Robert K.; Ali, S.

2009-11-30T23:59:59.000Z

199

Simulation of lean premixed turbulent combustion  

E-Print Network (OSTI)

combustion systems that can burn fuels such as hydrogen or syngas.syngas, which is obtained from coal gasi?cation. E?ective utilization of these fuels requires combustion

2008-01-01T23:59:59.000Z

200

Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures  

SciTech Connect

The overall objective of this project is the development of a mechanical rotary-disk feeder, known as the Stamet Posimetric High Pressure Solids Feeder System, to demonstrate feeding of dry granular coal continuously and controllably into pressurized environments of up to 70 kg/cm2 (1,000 psi). This is the Phase III of the ongoing program. Earlier Phases 1 and II successfully demonstrated feeding into pressures up to 35 kg/cm{sup 2} (500 psi). The final report for those phases was submitted in April 2005. Based on the previous work done in Phases I & II using Powder River Basin coal provided by the PSDF facility in Wilsonville, AL, a Phase III feeder system was designed and built to accomplish the target of feeding the coal into a pressure of 70 kg/cm2 (1,000 psi) and to be capable of feed rates of up to 550 kilograms (1,200lbs) per hour. The drive motor system from Phase II was retained for use on Phase III since projected performance calculations indicated it should be capable of driving the Phase III pump to the target levels. The pump & motor system was installed in a custom built test rig comprising an inlet vessel containing an active live-wall hopper mounted on weigh cells in a support frame, transition into the pump inlet, transition from pump outlet and a receiver vessel containing a receiver drum supported on weigh cells. All pressure containment on the rig was rated to105 kg/cm{sup 2} (1,500psi) to accommodate the final pressure requirement of a proposed Phase IV of the program. A screw conveyor and batch hopper were added to transfer coal at atmospheric pressure from the shop floor up into the test rig to enable continuous feeding up to the capacity of the receiving vessel. Control & monitoring systems were up-rated from the Phase II system to cover the additional features incorporated in the Phase III rig, and provide closer control and expanded monitoring of the entire system. A program of testing and modification was carried out in Stamet's facility in CA, culminating in the first successful feeding of coal into the Phase III target of 70 kg/cm{sup 2} (1,000 psi) gas pressure in March 2007. Subsequently, repeated runs at pressure were achieved, and comparison of the data with Phase II results when adjusted for scale differences showed further power reductions of 40% had been achieved from the final Phase II pressure runs. The general design layout of a commercial-scale unit was conducted, and preliminary cost estimates made.

Derek L. Aldred; Timothy Saunders

2007-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

COMBUSTION RESEARCH - FY-1979  

E-Print Network (OSTI)

deposition due to the heat of combustion. The problem wedimensionless heat of combustion, QpYoxoolhw t transferredfraction of specie i heat of combustion per gram of fuel

,

2012-01-01T23:59:59.000Z

202

Design strategy for a Chemical Looping Combustion system using process simulation and Computational Fluid Dynamics  

Science Journals Connector (OSTI)

A strategy for design and optimisation of chemical processes involving multiple fluidised bed reactors is presented through a combination of standard design calculations, process simulation and Computational Fluid Dynamics (CFD). The strategy is demonstrated in designing a Chemical Looping Combustion (CLC) process that generates 12.5 kW of heat in the air reactor. The resulting design strategy will allow for very economical investigations into various design and optimisation considerations. It also offers a platform from which to conduct virtual prototyping investigations for new process concepts, which will lead to significant economic benefits when compared with a traditional experimental process development strategy.

Schalk Cloete; Shahriar Amini

2012-01-01T23:59:59.000Z

203

Transformations of inorganic coal constituents in combustion systems. Volume 3, Appendices: Final report  

SciTech Connect

This report contains the computer codes developed for the coal combustion project. In Subsection B.1 the FORTRAN code developed for the percolative fragmentation model (or the discrete model, since a char is expressed as a collection of discrete elements in a discrete space) is presented. In Subsection B.2 the code for the continuum model (thus named because mineral inclusions are distributed in a continuum space) is presented. A stereological model code developed to obtain the pore size distribution from a two-dimensional data is presented in Subsection B.3.

Helble, J.J. [ed.; Srinivasachar, S.; Wilemski, G.; Boni, A.A. [PSI Technology Co., Andover, MA (United States); Kang, Shim-Gyoo; Sarofim, A.F.; Graham, K.A.; Beer, J.M. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Peterson, T.W.; Wendt, O.L.; Gallagher, N.B.; Bool, L. [Arizona Univ., Tucson, AZ (United States); Huggins, F.E.; Huffman, G.P.; Shah, N.; Shah, A. [Kentucky Univ., Lexington, KY (United States)

1992-11-01T23:59:59.000Z

204

SciTech Connect: Novel Solvent System for Post Combustion CO...  

Office of Scientific and Technical Information (OSTI)

Llc Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 20 FOSSIL-FUELED POWER PLANTS Clean Coal Technology Coal - Environmental (Carbon Capture)...

205

16 - Ultra-low nitrogen oxides (NOx) emissions combustion in gas turbine systems  

Science Journals Connector (OSTI)

Abstract: The historical development of gas turbine low \\{NOx\\} combustion from the pioneering NASA work in the early 1970s to the present generation of ultra-low \\{NOx\\} industrial gas turbine combustors is reviewed. The principles of operation of single digit ultra-low \\{NOx\\} gas turbine combustion for industrial applications are outlined. The review shows the potential has been demonstrated by several investigators using different flame stabilizers for \\{NOx\\} to be reduced to 1ppm at 1700K, 2ppm at 1800K and 34ppm at 1900K with no influence of operating pressure and with a practical operating flame stability margin. Under these conditions it is shown that no thermal \\{NOx\\} should occur and all the \\{NOx\\} is formed by the prompt \\{NOx\\} mechanisms. The elimination of thermal \\{NOx\\} makes the \\{NOx\\} emissions independent of residence time or reference velocity and independent of pressure. Also there is no influence of air inlet temperature for the same flame temperature. Where legislation requires emissions to be as low as can be achieved, emissions below 4ppm in production engines are current technology and this review shows the potential to get even lower than this in the future.

G.E. Andrews

2013-01-01T23:59:59.000Z

206

Assessment of atmospheric fluidized-bed combustion recycle systems. Final report  

SciTech Connect

This report presents a technical and economic evaluation of AFBC power plants with recycle systems, and a comparison of these plants with AFBC power plants with carbon burnup beds (CBB) and with pulverized coal-fired (PCF) power plants with flue gas desulfurization (FGD) systems. The analysis considers 1000 MWe plants burning both eastern and western coals. The capital and operating cost estimates are based on boiler designs developed by Babcock and Wilcox, Inc., and on sorbent requirements estimated by Burns and Roe, Inc. The economic analyses are based on a plant located in the East Central region of the United States with a 30-year life and a 70 percent capacity factor. The eastern coal-fired plants are designed to burn Illinois bituminous coal with a higher heating value of 10,100 Btu/lb and a sulfur content of 4%. The required calcium to sulfur mole ratios for the eastern plants are 3.8:1 and 2.5:1 for the AFBC/CBB and AFBC/recycle plants, respectively. The western coal-fired plants are designed to burn Wyoming subbituminous coal with a higher heating value of 8,020 Btu/lb and a sulfur content of 0.48%. The required calcium to sulfur mole ratios for the western plants are 0.7:1 and 0.4:1 for the AFBC/CBB and AFBC/recycle plants, respectively. These Ca/S mole ratios allow for 30 percent utilization of the alkaline coal ash to reduce sorbent requirements to the fluidized bed combustor. The analyses indicate that the AFBC/recycle plants have an economic advantage over the AFBC/CBB plants and over the PCF/FGD plants for both eastern and western coal.

Rogali, R.; Wysocki, J.; Kursman, S.

1981-10-01T23:59:59.000Z

207

Transmission of the size of units of quantities and verification conditions as applied to measurement systems  

Science Journals Connector (OSTI)

The meaning of transmission of the size of units of quantities and verification conditions applied to measurement systems is considered.

A. A. Danilov

2007-05-01T23:59:59.000Z

208

A study of the effect of chloride on mercury removal in a fluidized bed combustion (FBC) system  

SciTech Connect

Mercury exists in three forms, which are elemental mercury, inorganic mercury compounds, and organic mercury. Each form of mercury has a very different exposure potential. Oxidized mercury is soluble and has a tendency to associate with particles. Nearly all the post-combustion flue gas cleaning systems proposed to remove mercury may be categorized as either scrubbers or adsorbers. Therefore, the mercury sink in the cleaning system will be either the excess water of a wet scrubber or the mercury laden sorbent from an absorber. The major problem for post-combustion mercury capture systems is capturing the practically water-insoluble elemental mercury. Co-firing with high chlorine coal or RDF in utility boiler systems can provide an HCI atmosphere for the oxidation of elemental mercury in flue gas at relatively low temperatures (500--600 C). The objective of this study is to increase the efficiency of mercury emission cleaning methods by using HCl to convert elemental mercury to oxidized mercury species at low monetary costs and lower other toxic air emissions. When high chlorine (0.3--0.5%) coals were burned and a high intensity vortex flow (from secondary air) was used, around 70% of the total mercury in the fuel was condensed and absorbed by the fly ash (including calcium compounds). The remaining 30% of total fuel mercury was emitted in the gas phase in the flue gas. As for the gas phase mercury, about 98% of it exists in an oxidized form with a higher boiling temperature than elemental mercury and can be easily captured by an ESP or FGP apparatus. Only about 0.5% of the total fuel mercury was released to the atmosphere in elemental form.

Liu, K.; Gao, Y.; Li, F.; Pan, W.P.; Riley, J.T.; Mehta, A.K.; Ho, K.K.; Smith, S.R.

2000-07-01T23:59:59.000Z

209

EXPERIMENTAL STUDY OF BI-DIRECTIONAL SPRING UNIT IN ISOLATED FLOOR SYSTEMS  

E-Print Network (OSTI)

) or linear spring based systems (coil springs or rubber units used for restoration force), with viscousEXPERIMENTAL STUDY OF BI-DIRECTIONAL SPRING UNIT IN ISOLATED FLOOR SYSTEMS Shenlei Cui1 , Michel the mechanical behavior of bi-directional spring units used as isolators in a kind of such isolated floor systems

Bruneau, Michel

210

System and method for selective catalytic reduction of nitrogen oxides in combustion exhaust gases  

DOE Patents (OSTI)

A multi-stage selective catalytic reduction (SCR) unit (32) provides efficient reduction of NOx and other pollutants from about 50-550.degree. C. in a power plant (19). Hydrogen (24) and ammonia (29) are variably supplied to the SCR unit depending on temperature. An upstream portion (34) of the SCR unit catalyzes NOx+NH.sub.3 reactions above about 200.degree. C. A downstream portion (36) catalyzes NOx+H.sub.2 reactions below about 260.degree. C., and catalyzes oxidation of NH.sub.3, CO, and VOCs with oxygen in the exhaust above about 200.degree. C., efficiently removing NOx and other pollutants over a range of conditions with low slippage of NH.sub.3. An ammonia synthesis unit (28) may be connected to the SCR unit to provide NH.sub.3 as needed, avoiding transport and storage of ammonia or urea at the site. A carbonaceous gasification plant (18) on site may supply hydrogen and nitrogen to the ammonia synthesis unit, and hydrogen to the SCR unit.

Sobolevskiy, Anatoly; Rossin, Joseph A

2014-04-08T23:59:59.000Z

211

System Study of Rich Catalytic/Lean burn (RCL) Catalytic Combustion for Natural Gas and Coal-Derived Syngas Combustion Turbines  

SciTech Connect

Rich Catalytic/Lean burn (RCL{reg_sign}) technology has been successfully developed to provide improvement in Dry Low Emission gas turbine technology for coal derived syngas and natural gas delivering near zero NOx emissions, improved efficiency, extending component lifetime and the ability to have fuel flexibility. The present report shows substantial net cost saving using RCL{reg_sign} technology as compared to other technologies both for new and retrofit applications, thus eliminating the need for Selective Catalytic Reduction (SCR) in combined or simple cycle for Integrated Gasification Combined Cycle (IGCC) and natural gas fired combustion turbines.

Shahrokh Etemad; Lance Smith; Kevin Burns

2004-12-01T23:59:59.000Z

212

DEVELOPMENT OF FINE PARTICULATE EMISSION FACTORS AND SPECIATION PROFILES FOR OIL AND GAS FIRED COMBUSTION SYSTEMS  

SciTech Connect

This report provides results from the second year of this three-year project to develop dilution measurement technology for characterizing PM2.5 (particles with aerodynamic diameter smaller than 2.5 micrometers) and precursor emissions from stationary combustion sources used in oil, gas and power generation operation. Detailed emission rate and chemical speciation tests results for a gas turbine, a process heater, and a commercial oil/gas fired boiler are presented. Tests were performed using a research dilution sampling apparatus and traditional EPA methods. A series of pilot tests were conducted to identify the constraints to reduce the size of current research dilution sampler for future stack emission tests. Based on the test results, a bench prototype compact dilution sampler developed and characterized in GE EER in August 2002.

Glenn England; Oliver Chang; Stephanie Wien

2002-02-14T23:59:59.000Z

213

Oxy-combustion Boiler Material Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxy-combustion Boiler Material Oxy-combustion Boiler Material Development Background In an oxy-combustion system, combustion air (79 percent nitrogen, 21 percent oxygen) is replaced by oxygen and recycled flue gas (carbon dioxide [CO 2 ] and water), eliminating nitrogen in the flue gas stream. When applied to an existing boiler, the flue gas recirculation rate is adjusted to enable the boiler to maintain its original air-fired heat absorption performance, eliminating the need to derate the boiler

214

Partitioning of mercury, arsenic, selenium, boron, and chloride in a full-scale coal combustion process equipped with selective catalytic reduction, electrostatic precipitation, and flue gas desulfurization systems  

SciTech Connect

A full-scale field study was carried out at a 795 MWe coal-fired power plant equipped with selective catalytic reduction (SCR), an electrostatic precipitator (ESP), and wet flue gas desulfurization (FGD) systems to investigate the distribution of selected trace elements (i.e., mercury, arsenic, selenium, boron, and chloride) from coal, FGD reagent slurry, makeup water to flue gas, solid byproduct, and wastewater streams. Flue gases were collected from the SCR outlet, ESP inlet, FGD inlet, and stack. Concurrent with flue gas sampling, coal, bottom ash, economizer ash, and samples from the FGD process were also collected for elemental analysis. By combining plant operation parameters, the overall material balances of selected elements were established. The removal efficiencies of As, Se, Hg, and B by the ESP unit were 88, 56, 17, and 8%, respectively. Only about 2.5% of Cl was condensed and removed from flue gas by fly ash. The FGD process removed over 90% of Cl, 77% of B, 76% of Hg, 30% of Se, and 5% of As. About 90% and 99% of the FGD-removed Hg and Se were associated with gypsum. For B and Cl, over 99% were discharged from the coal combustion process with the wastewater. Mineral trona (trisodium hydrogendicarbonate dehydrate, Na{sub 3}H(CO{sub 3}){sub 2}.2H{sub 2}O) was injected before the ESP unit to control the emission of sulfur trioxide (SO{sub 3}). By comparing the trace elements compositions in the fly ash samples collected from the locations before and after the trona injection, the injection of trona did not show an observable effect on the partitioning behaviors of selenium and arsenic, but it significantly increased the adsorption of mercury onto fly ash. The stack emissions of mercury, boron, selenium, and chloride were for the most part in the gas phase. 47 refs., 3 figs., 11 tabs.

Chin-Min Cheng; Pauline Hack; Paul Chu; Yung-Nan Chang; Ting-Yu Lin; Chih-Sheng Ko; Po-Han Chiang; Cheng-Chun He; Yuan-Min Lai; Wei-Ping Pan [Western Kentucky University, Bowling Green, KY (United States). Institute for Combustion Science and Environmental Technology

2009-09-15T23:59:59.000Z

215

Improving the liquid-cooling systems of power units and technological equipment  

Science Journals Connector (OSTI)

Processes in the liquid cooling systems of power units and technological equipment are considered. Criteria ... of the energy and resource aspects of the cooling systems.

V. A. Zhukov

2011-12-01T23:59:59.000Z

216

Combustion & Health  

E-Print Network (OSTI)

FFCOMBUSTION & HEALTH Winifred J. Hamilton, PhD, SM Clear Air Through Energy Efficiency (CATEE) Galveston, TX October 9?11, 2012 FFCOMBUSTION & HEALTH FFCOMBUSTION: THE THREAT ? Biggest threat to world ecosystems (and to human health...) ? Combustion of fossil fuels for ? Electricity ? Industrial processes ? Vehicle propulsion ? Cooking and heat ? Other ? Munitions ? Fireworks ? Light ? Cigarettes, hookahs? FFCOMBUSTION & HEALTH FFCOMBUSTION: THE THREAT ? SCALE (think health...

Hamilton, W.

2012-01-01T23:59:59.000Z

217

Post-Combustion Carbon Capture Research | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Post-Combustion Carbon Capture Research Post-Combustion Carbon Capture Research Post-Combustion Carbon Capture Research Fossil fuel fired electric generating plants are the cornerstone of America's central power system. Currently, the existing fossil fuel fleet accounts for about two-thirds of all electricity generated domestically, over 40% from coal alone. Electricity demand is expected to increase dramatically over the next 30 years, and adding new generating capacity typically requires long lead time. In the meantime, the United States will continue to rely on existing plants to provide a substantial amount of affordable electric power for years to come. Retrofitting the Existing Fleet of Power Plants There is vast potential for retrofitting carbon capture technologies to the existing fossil fuel fleet. In 2011, coal-fired power plants produced

218

Environmental impact of fossil fuel combustion in power generation  

SciTech Connect

All the recent developments in the combustion systems employed for power generation have been based on environmental considerations. Combustion modifications have been developed and utilised in order to control NO{sub x} emissions and improvements continue to be made as the legislative requirements tighten. Chemical processes and fuel switching are used to control SO{sub x} emissions. After nitrogen, carbon dioxide is the major gas emitted from the combustion process and its potential potency as a greenhouse gas is well documented. Increased efficiency cycles, mainly based on natural gas as the prime fuel, can minimise the amount of CO{sub x} produced per unit of power generated. As the economics of natural gas utilisation become less favourable a return to clean coal technology based power generation processes may be required.

Allen, J.W.; Beal, P.R. [International Combustion Ltd., Derby (United Kingdom)

1996-12-31T23:59:59.000Z

219

Heat-pipe gas-combustion system endurance test for Stirling engine. Final report, May 1990-September 1990  

SciTech Connect

Stirling Thermal Motors, Inc., (STM) has been developing a general purpose Heat Pipe Gas Combustion System (HPGC) suitable for use with the STM4-120 Stirling engine. The HPGC consists of a parallel plate recuperative preheater, a finned heat pipe evaporator and a film cooled gas combustor. A principal component of the HPGC is the heat pipe evaporator which collects and distributes the liquid sodium over the heat transfer surfaces. The liquid sodium evaporates and flows to the condensers where it delivers its latent heat. The report presents test results of endurance tests run on a Gas-Fired Stirling Engine (GFSE). Tests on a dynamometer test stand yielded 67 hours of engine operation at power levels over 10 kW (13.5 hp) with 26 hours at power levels above 15 kW (20 hp). Total testing of the engine, including both motoring tests and engine operation, yielded 245 hours of engine run time.

Mahrle, P.

1990-12-01T23:59:59.000Z

220

A new hybrid pneumatic combustion engine to improve fuel consumption of windDiesel power system for non-interconnected areas  

Science Journals Connector (OSTI)

This paper presents an evaluation of an optimized Hybrid Pneumatic-Combustion Engine (HPCE) concept that permits reducing fuel consumption for electricity production in non-interconnected remote areas, originally equipped with hybrid WindDiesel System (WDS). Up to now, most of the studies on the pneumatic hybridization of Internal Combustion Engines (ICE) have dealt with two-stroke pure pneumatic mode. The few studies that have dealt with hybrid pneumatic-combustion four-stroke mode require adding a supplementary valve to charge compressed air in the combustion chamber. This modification means that a new cylinder head should be fabricated. Moreover, those studies focus on spark ignition engines and are not yet validated for Diesel engines. Present HPCE is capable of making a Diesel engine operate under two-stroke pneumatic motor mode, two-stroke pneumatic pump mode and four-stroke hybrid mode, without needing an additional valve in the combustion chamber. This fact constitutes this studys strength and innovation. The evaluation of the concept is based on ideal thermodynamic cycle modeling. The optimized valve actuation timings for all modes lead to generic maps that are independent of the engine size. The fuel economy is calculated for a known site during a whole year, function of the air storage volume and the wind power penetration rate.

Tammam Basbous; Rafic Younes; Adrian Ilinca; Jean Perron

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Vehicle Technologies Office Merit Review 2014: Advanced Combustion Concepts- Enabling Systems and Solutions (ACCESS) for High Efficiency Light Duty Vehicles  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Robert Bosch at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced combustion concepts -...

222

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes 2012 DOE Hydrogen and Fuel...

223

Light Duty Combustion Research: Advanced Light-Duty Combustion...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and...

224

Commercialization of fluidized bed combustion systems in urban areas: The local government role  

SciTech Connect

The purpose of this project was two-fold: to review the critical technical and institutional considerations which must underlie any decision to invest in Fluidized-Bed Combustion technology and to gauge the market for FBC technology within the City of Indianapolis. To achieve these purposes extensive research into the state-of-the-art of FBC technology was performed, including a review of alternate design configurations and an assessment of the remaining technical and operational difficulties associated with this new technology. At the same time a number of key financing and regulatory issues were investigated which directly affect the marketability of FBC boilers to local industries and institutions. Some of the largest Indianapolis energy users were surveyed to determine their long-term thermal energy requirements and whether FBC technology could help to meet these requirements. On the basis of this survey data, a comparative cost-benefit analysis of investment in a FBC boiler compared with investment in other types of boilers was undertaken. The analysis was done for specific Indianapolis industries and institutions. This report summarizes the project activities and makes specific recommendations that should help to facilitate the commercialization of FBC boilers in Indianapolis.

Jacobs, L.

1983-04-01T23:59:59.000Z

225

A Novel High-Heat Transfer Low-NO{sub x} Natural Gas Combustion System. Final Technical Report  

SciTech Connect

A novel high-heat transfer low NO(sub x) natural gas combustion system. The objectives of this program are to research, develop, test, and commercialize a novel high-heat transfer low-NO{sub x} natural gas combustion system for oxygen-, oxygen-enriched air, and air-fired furnaces. This technology will improve the process efficiency (productivity and product quality) and the energy efficiency of high-temperature industrial furnaces by at least 20%. GTI's high-heat transfer burner has applications in high-temperature air, oxygen-enriched air, and oxygen furnaces used in the glass, metals, cement, and other industries. Development work in this program is focused on using this burner to improve the energy efficiency and productivity of glass melting furnaces that are major industrial energy consumers. The following specific project objectives are defined to provide a means of achieving the overall project objectives. (1) Identify topics to be covered, problems requiring attention, equipment to be used in the program, and test plans to be followed in Phase II and Phase III. (2) Use existing codes to develop models of gas combustion and soot nucleation and growth as well as a thermodynamic and parametric description of furnace heat transfer issues. (3) Conduct a parametric study to confirm the increase in process and energy efficiency. (4) Design and fabricate a high-heat transfer low-NOx natural gas burners for laboratory, pilot- and demonstration-scale tests. (5) Test the high-heat transfer burner in one of GTI's laboratory-scale high-temperature furnaces. (6) Design and demonstrate the high-heat transfer burner on GTI's unique pilot-scale glass tank simulator. (7) Complete one long term demonstration test of this burner technology on an Owens Corning full-scale industrial glass melting furnace. (8) Prepare an Industrial Adoption Plan. This Plan will be updated in each program Phase as additional information becomes available. The Plan will include technical and economic analyses, energy savings and waste reduction predictions, evaluation of environmental effects, and outline issues concerning manufacturing, marketing, and financing. Combustion Tec, Owens Corning, and GTI will all take active roles in defining this Plan. During Phase I, the first three objectives were addressed and completed along with the design component of the fourth objective. In Phase II, the fabrication component of the fourth objective was completed along with objectives five and six. Results of the Phase I work were reported in the Phase I Final Report and are summarized in this Final Technical Report. Work for Phase II was divided in four specific Tasks. Results of the Phase II work were reported in the Phase II Final Report and are also summarized in this Final Technical Report. No Phase III Final Report was prepared, so this Final Technical Report presents the results of Phase III commercial demonstration efforts. A description of each Task in Phases I, II, and III is presented in this report.

Abbasi, H.

2004-01-01T23:59:59.000Z

226

Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

FEMP Technology FEMP Technology Brief: Boiler Combustion Control and Monitoring System to someone by E-mail Share Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion Control and Monitoring System on Facebook Tweet about Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion Control and Monitoring System on Twitter Bookmark Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion Control and Monitoring System on Google Bookmark Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion Control and Monitoring System on Delicious Rank Federal Energy Management Program: FEMP Technology Brief: Boiler Combustion Control and Monitoring System on Digg Find More places to share Federal Energy Management Program: FEMP

227

Light Duty Efficient Clean Combustion  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

fuel efficiency over the FTP city drive cycle by 10.5% over today's state-of-the-art diesel engine. Develop & design an advanced combustion system that synergistically meets...

228

Oxygen-Enriched Combustion | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

tip sheet discusses how an increase in oxygen in combustion air can reduce the energy loss in the exhaust gases and increase process heating system efficiency. PROCESS HEATING...

229

Advanced Control Methodology for Biomass Combustion.  

E-Print Network (OSTI)

??This thesis presents a feasibility study for a low cost sensor-based combustion control system using a predictive chemical kinetic model that captures efficiencies and pollution (more)

Bjornsson, Stefan

2014-01-01T23:59:59.000Z

230

Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Combustion, and Emission Modeling Using KH-ACT Primary Breakup Model & Detailed Chemistry Sibendu Som, Douglas E. Longman Engine and Emissions Group (Energy Systems Division)...

231

CFD analysis of bubble hydrodynamics in a fuel reactor for a hydrogen-fueled chemical looping combustion system  

Science Journals Connector (OSTI)

Abstract This study investigates the temporal development of bubble hydrodynamics in the fuel reactor of a hydrogen-fueled chemical looping combustion (CLC) system by using a computational model. The model also investigates the molar fraction of products in gas and solid phases. The study assists in developing a better understanding of the CLC process, which has many advantages such as being a potentially promising candidate for an efficient carbon dioxide capture technology. The study employs the kinetic theory of granular flow. The reactive fluid dynamic system of the fuel reactor is customized by incorporating the kinetics of an oxygen carrier reduction into a commercial computational fluid dynamics (CFD) code. An Eulerian multiphase treatment is used to describe the continuum two-fluid model for both gas and solid phases. CaSO4 and H2 are used as an oxygen carrier and a fuel, respectively. The computational results are validated with the experimental and numerical results available in the open literature. The CFD simulations are found to capture the features of the bubble formation, rise and burst in unsteady and quasi-steady states very well. The results show a significant increase in the conversion rate with higher dense bed height, lower bed width, higher free board height and smaller oxygen carrier particles which upsurge an overall performance of the CLC plant.

Atal Bihari Harichandan; Tariq Shamim

2014-01-01T23:59:59.000Z

232

Experience in the installation of a microprocessor system for controlling converter units of the Vyborg substation  

Science Journals Connector (OSTI)

The experience in the installation of modern digital systems for controlling converter units at the Vyborg converter substation on the basis of advanced microprocessor devices...

K. B. Gusakovskii; E. Yu. Zmaznov; S. V. Katantsev

2006-01-01T23:59:59.000Z

233

Chemistry and petrology of fly ash derived from the co-combustion of western United States coal and tire-derived fuel  

Science Journals Connector (OSTI)

Inorganic ash chemistry and petrology was investigated in coal-combustion by-products from the burning of tire-derived fuel (TDF) with a 1:1 blend of Colorado and Utah high volatile C bituminous coal and Powder River Basin subbituminous coal. Both coal components had high vitrinite contents. With the exception of Sr and Ba, the trace-element contents of the coals were not high. The fly ash was enriched in Zn, known to be a constituent of both the rubber and the wire in tires. Cu, also a constituent of the brass coatings of bead wire, was enriched in the same fractions with high Zn concentrations. Zn and Cu, along with several other elements, increased in concentration in the back, cooler row of the electrostatic precipitator. The enrichment of other elements, such as Se, As, and Pb, was more problematical. It is possible that the latter elements have more of a coal source than a tire source.

James C. Hower; J.David Robertson

2004-01-01T23:59:59.000Z

234

Energy Recovery System for Fluid Catalytic Cracking Units  

E-Print Network (OSTI)

This paper describes the power and heat recovery processes and equipment for modern fluid catalytic cracking (FCC) units made possible by improvements in catalyst fines removal technology and the availability of erosion resistant high temperature...

Wen, H.; Lou, S. C.

1982-01-01T23:59:59.000Z

235

Improved Combustion Health Monitoring Techniques - Longer Life, Higher Availability  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Health Combustion Health Monitoring Techniques Longer Life, Higher Availability Georgia Tech Jerry Seitzman SR102 * Modern Dry Low Emissions combustors have low emissions, but at a cost - significantly lower availability and reliability than "conventional" systems * The input data to the combustor monitor is pressure fluctuations, same as in currently available systems, but from this project the system analyzes the data differently, accounting for changes such as ambient temperature and doing analyses that show trends which indicate when planned maintenance should be performed to avoid an unplanned shut down. * Technology Transfer: Worked with 3 GT manufacturers. Method licensed to turbine monitoring company and installed at a number of power plants in the United States.

236

Impact of Extreme Injection Pressure and EGR on the Combustion...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Analyse of the Injection System * Simulation * Hydraulic Characterisation * Optical Spray Diagnostics Engine Investigations * Experimental Results * Optical Combustion...

237

Burning Velocities in Catalytically Assisted Self-Propagating High-Temperature Combustion Synthesis Systems  

E-Print Network (OSTI)

the compact yielding a solid product, typically a metal carbide or boride, for example, Me s C s 3 MeC s (1) where Me is a transition metal species such as titanium or tantalum, and C is carbon (graphite, carbon) is included in the system. The transport agent aids in the transport of the metal or carbon (or boron

Wooldridge, Margaret S.

238

Basics of Advanced Software Systems Static cyclic scheduling on automotive Electronic Control Units (ECU)  

E-Print Network (OSTI)

Basics of Advanced Software Systems Static cyclic scheduling on automotive Electronic Control Units Systems ­ Coursework ­ March 9, 2012. lic scheduling on automotive Electronic Control Units (ECU) (nicolas - Name, - Execution time, - Period of execution, - First activation date, also cal period. The scheduling

Navet, Nicolas

239

Combustion chemistry  

SciTech Connect

This research is concerned with the development and use of sensitivity analysis tools to probe the response of dependent variables to model input variables. Sensitivity analysis is important at all levels of combustion modeling. This group`s research continues to be focused on elucidating the interrelationship between features in the underlying potential energy surface (obtained from ab initio quantum chemistry calculations) and their responses in the quantum dynamics, e.g., reactive transition probabilities, cross sections, and thermal rate coefficients. The goals of this research are: (i) to provide feedback information to quantum chemists in their potential surface refinement efforts, and (ii) to gain a better understanding of how various regions in the potential influence the dynamics. These investigations are carried out with the methodology of quantum functional sensitivity analysis (QFSA).

Brown, N.J. [Lawrence Berkeley Laboratory, CA (United States)

1993-12-01T23:59:59.000Z

240

Combustion heat release effects on asymmetric vortex shedding from bluff bodies.  

E-Print Network (OSTI)

??Combustion systems utilizing bluff bodies to stabilize the combustion processes can experience oscillatory heat release due to the alternate shedding of coherent, von Krmn vortices (more)

Cross, Caleb Nathaniel

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

INTELLIGENT MONITORING SYSTEM WITH HIGH TEMPERATURE DISTRIBUTED FIBEROPTIC SENSOR FOR POWER PLANT COMBUSTION PROCESSES  

SciTech Connect

The objective of the proposed work is to develop an intelligent distributed fiber optical sensor system for real-time monitoring of high temperature in a boiler furnace in power plants. Of particular interest is the estimation of spatial and temporal distributions of high temperatures within a boiler furnace, which will be essential in assessing and controlling the mechanisms that form and remove pollutants at the source, such as NOx. The basic approach in developing the proposed sensor system is three fold: (1) development of high temperature distributed fiber optical sensor capable of measuring temperatures greater than 2000 C degree with spatial resolution of less than 1 cm; (2) development of distributed parameter system (DPS) models to map the three-dimensional (3D) temperature distribution for the furnace; and (3) development of an intelligent monitoring system for real-time monitoring of the 3D boiler temperature distribution. Under Task 1, the efforts focused on developing an innovative high temperature distributed fiber optic sensor by fabricating in-fiber gratings in single crystal sapphire fibers. So far, our major accomplishments include: Successfully grown alumina cladding layers on single crystal sapphire fibers, successfully fabricated in-fiber gratings in single crystal sapphire fibers, and successfully developed a high temperature distributed fiber optic sensor. Under Task 2, the emphasis has been on putting into place a computational capability for simulation of combustors. A PC workstation was acquired with dual Xeon processors and sufficient memory to support 3-D calculations. An existing license for Fluent software was expanded to include two PC processes, where the existing license was for a Unix workstation. Under Task 3, intelligent state estimation theory is being developed which will map the set of 1D (located judiciously within a 3D environment) measurement data into a 3D temperature profile. This theory presents a semigroup-based approach to the design and training of a system type neural network which performs function extrapolation. The assumption of the semigroup property suffices to guarantee the existence of a generic mathematical architecture and operation which is explicit enough to support the direct design and training of a neural network.

Kwang Y. Lee; Stuart S. Yin; Andre Boheman

2003-12-26T23:59:59.000Z

242

NETL- High-Pressure Combustion Research Facility  

SciTech Connect

NETL's High-Pressure Combustion Facility is a unique resource within the National Laboratories system. It provides the test capabilities needed to evaluate new combustion concepts for high-pressure, high-temperature hydrogen and natural gas turbines. These concepts will be critical for the next generation of ultra clean, ultra efficient power systems.

None

2013-07-08T23:59:59.000Z

243

NETL- High-Pressure Combustion Research Facility  

ScienceCinema (OSTI)

NETL's High-Pressure Combustion Facility is a unique resource within the National Laboratories system. It provides the test capabilities needed to evaluate new combustion concepts for high-pressure, high-temperature hydrogen and natural gas turbines. These concepts will be critical for the next generation of ultra clean, ultra efficient power systems.

None

2014-06-26T23:59:59.000Z

244

Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels  

SciTech Connect

The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

2013-08-31T23:59:59.000Z

245

Critical care unit data integration and clinical information system  

E-Print Network (OSTI)

system . . . . . . 25 8 Trend panel of CCUDII system. 9 Alarm panel of CCUDII system 10 Graph panel of CCUDII system . . . . . 28 . . . 3 1 . . . 32 11 Analysis panel of CCUDII system . . 35 12 Scatter plots of the variables 02AV lab and 02AV... oxygen content (CTvOz) arterial ? venous oxygen content difference (avDOz) oxygen availability (OzAV) oxygen consumption (VO, ) oxygen availability index (OzAVI) oxygen consumption index (VO, I) oxygen extraction ratio (OzER) Respiration...

Doma, Uma Jagdish

2012-06-07T23:59:59.000Z

246

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

D.C. ace15daw.pdf More Documents & Publications Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes Stretch Efficiency for Combustion Engines:...

247

Combustion Byproducts Recycling Consortium  

SciTech Connect

Each year, over 100 million tons of solid byproducts are produced by coal-burning electric utilities in the United States. Annual production of flue gas desulfurization (FGD) byproducts continues to increase as the result of more stringent sulfur emission restrictions. In addition, stricter limits on NOx emissions mandated by the 1990 Clean Air Act have resulted in utility burner/boiler modifications that frequently yield higher carbon concentrations in fly ash, which restricts the use of the ash as a cement replacement. Controlling ammonia in ash is also of concern. If newer, 'clean coal' combustion and gasification technologies are adopted, their byproducts may also present a management challenge. The objective of the Combustion Byproducts Recycling Consortium (CBRC) is to develop and demonstrate technologies to address issues related to the recycling of byproducts associated with coal combustion processes. A goal of CBRC is that these technologies, by the year 2010, will lead to an overall ash utilization rate from the current 34% to 50% by such measures as increasing the current rate of FGD byproduct use and increasing in the number of uses considered 'allowable' under state regulations. Another issue of interest to the CBRC would be to examine the environmental impact of both byproduct utilization and disposal. No byproduct utilization technology is likely to be adopted by industry unless it is more cost-effective than landfilling. Therefore, it is extremely important that the utility industry provide guidance to the R&D program. Government agencies and private-sector organizations that may be able to utilize these materials in the conduct of their missions should also provide input. The CBRC will serve as an effective vehicle for acquiring and maintaining guidance from these diverse organizations so that the proper balance in the R&D program is achieved.

Paul Ziemkiewicz; Tamara Vandivort; Debra Pflughoeft-Hassett; Y. Paul Chugh; James Hower

2008-08-31T23:59:59.000Z

248

Combustion Byproducts Recycling Consortium  

SciTech Connect

Each year, over 100 million tons of solid byproducts are produced by coal-burning electric utilities in the United States. Annual production of flue gas desulfurization (FGD) byproducts continues to increase as the result of more stringent sulfur emission restrictions. In addition, stricter limits on NOx emissions mandated by the 1990 Clean Air Act have resulted in utility burner/boiler modifications that frequently yield higher carbon concentrations in fly ash, which restricts the use of the ash as a cement replacement. Controlling ammonia in ash is also of concern. If newer, clean coal combustion and gasification technologies are adopted, their byproducts may also present a management challenge. The objective of the Combustion Byproducts Recycling Consortium (CBRC) is to develop and demonstrate technologies to address issues related to the recycling of byproducts associated with coal combustion processes. A goal of CBRC is that these technologies, by the year 2010, will lead to an overall ash utilization rate from the current 34% to 50% by such measures as increasing the current rate of FGD byproduct use and increasing in the number of uses considered allowable under state regulations. Another issue of interest to the CBRC would be to examine the environmental impact of both byproduct utilization and disposal. No byproduct utilization technology is likely to be adopted by industry unless it is more cost-effective than landfilling. Therefore, it is extremely important that the utility industry provide guidance to the R&D program. Government agencies and privatesector organizations that may be able to utilize these materials in the conduct of their missions should also provide input. The CBRC will serve as an effective vehicle for acquiring and maintaining guidance from these diverse organizations so that the proper balance in the R&D program is achieved.

Ziemkiewicz, Paul; Vandivort, Tamara; Pflughoeft-Hassett, Debra; Chugh, Y Paul; Hower, James

2008-08-31T23:59:59.000Z

249

Sandia Combustion Research Program: Annual report, 1986  

SciTech Connect

This report presents research results of the past year, divided thematically into some ten categories. Publications and presentations arising from this work are included in the appendix. Our highlighted accomplishment of the year is the announcement of the discovery and demonstration of the RAPRENOx process. This new mechanism for the elimination of nitrogen oxides from essentially all kinds of combustion exhausts shows promise for commercialization, and may eventually make a significant contribution to our nation's ability to control smog and acid rain. The sections of this volume describe the facility's laser and computer system, laser diagnostics of flames, combustion chemistry, reacting flows, liquid and solid propellant combustion, mathematical models of combustion, high-temperature material interfaces, studies of engine/furnace combustion, coal combustion, and the means of encouraging technology transfer. 182 refs., 170 figs., 12 tabs.

Not Available

1986-01-01T23:59:59.000Z

250

Use of aromatic salts for simultaneously removing SO.sub.2 and NO.sub.x pollutants from exhaust of a combustion system  

DOE Patents (OSTI)

A method is disclosed for removing pollutants from the exhaust of combustion systems burning fuels containing substantial amounts of sulfur and nitrogen. An exemplary method of the invention involves the formation and reaction of a sorbent comprising calcium benzoate. The calcium benzoate is either dry-sprayed (in the form of a fine powder) or wet-sprayed in an aqueous solution in a high temperature environment such as a combustion chamber. The latter technique is feasible since calcium benzoate is a water-soluble form of calcium. When the dispersed particles of calcium benzoate are heated to a high temperature, the organic benzoate burns off and fine calcium oxide particles are formed. These particles are cenospheric (hollow) and have thin and highly porous walls, thus, affording optimum external and internal accessibility for reacting with toxic gaseous emissions such as SO.sub.2. Further, the combustion of the organic benzoate portion of the sorbent results in the conversion of NO.sub.x to N.sub.2.

Levendis, Yiannis A. (Boston, MA); Wise, Donald L. (Belmont, MA)

1994-10-04T23:59:59.000Z

251

Advanced Combustion | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Advanced Combustion Combustion engines drive a large percentage of our nation's transportation vehicles and power generation and manufacturing facilities. Today's...

252

Optimal Design of Remote Terminal Unit (RTU) for Wireless SCADA System for Energy Management  

Science Journals Connector (OSTI)

For energy deficit countries, the design of Supervisory Control and Data Acquisition (SCADA) based energy management systems for optimal distribution is of high interest. Such design involves development of Remote Terminal Unit (RTU) which is considered ... Keywords: Field Programmable Gate Array (FPGA), Programmable Logic Controller (PLC), Remote Terminal Unit (RTU), Supervisory Control and Data Acquisition (SCADA), Tele-Control Interface (TCI), Wireless Communication

Muhammad Aamir; Javier Poncela; Muhammad Aslam Uqaili; B. S. Chowdhry; Nishat Ahmad Khan

2013-04-01T23:59:59.000Z

253

PRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM  

E-Print Network (OSTI)

comprising thermal and pumped-storage hydro units a large-scale mixed-integer optimization model is developed of big coal red blocks with several pumped storage plants of di ering e ciencies provides the mainPRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM R. Gollmer1 , A. Moller

Römisch, Werner

254

Filter system cost comparison for integrated gasification combined cycle and pressurized fluidized-bed combustion power systems  

SciTech Connect

To assess the relative cost of components and sub-systems for a hot gas particulate cleanup system a cost comparison between the filter systems for two advanced coal-based power plants was conducted. Assessing component and sub-system costs permits the most beneficial areas for product improvement to be identified. The results from this study are presented. The filter system is based on a Westinghouse Advanced Particulate Filter Concept which is designed to operate with ceramic candle filters. The Foster Wheeler second Generation 453 MWe (net) Pressurized Fluidized-Bed Combustor (PFBC) and the KRW 458 MWe (net) Integrated Gasification Combined Cycle (IGCC) power plants are used for the comparison. The comparison presents the general differences of the two power plants and the process related filtration conditions for PFBC and IGCC systems. The results present the conceptual designs for the PFBC and IGCC filter systems as well as a cost summary comparison. The cost summary comparison includes the total plant cost, the fixed operating and maintenance cost, the variable operating and maintenance cost and the effect on the cost of electricity for the two filter systems. The most beneficial areas for product improvement are identified.

Dennis, R.A.; McDaniel, H.M. [Dept. of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center; Buchanan, T.; Chen, H.; Harbaugh, L.B.; Klett, M.; Zaharchuk, R. [Gilbert/Commonwealth, Reading, PA (United States)

1995-12-31T23:59:59.000Z

255

Chemical kinetics and combustion modeling  

SciTech Connect

The goal of this program is to gain qualitative insight into how pollutants are formed in combustion systems and to develop quantitative mathematical models to predict their formation rates. The approach is an integrated one, combining low-pressure flame experiments, chemical kinetics modeling, theory, and kinetics experiments to gain as clear a picture as possible of the process in question. These efforts are focused on problems involved with the nitrogen chemistry of combustion systems and on the formation of soot and PAH in flames.

Miller, J.A. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

256

Hybrid Combustion-Gasification Chemical Looping  

SciTech Connect

For the past several years Alstom Power Inc. (Alstom), a leading world-wide power system manufacturer and supplier, has been in the initial stages of developing an entirely new, ultra-clean, low cost, high efficiency power plant for the global power market. This new power plant concept is based on a hybrid combustion-gasification process utilizing high temperature chemical and thermal looping technology The process consists of the oxidation, reduction, carbonation, and calcination of calcium-based compounds, which chemically react with coal, biomass, or opportunity fuels in two chemical loops and one thermal loop. The chemical and thermal looping technology can be alternatively configured as (i) a combustion-based steam power plant with CO{sub 2} capture, (ii) a hybrid combustion-gasification process producing a syngas for gas turbines or fuel cells, or (iii) an integrated hybrid combustion-gasification process producing hydrogen for gas turbines, fuel cells or other hydrogen based applications while also producing a separate stream of CO{sub 2} for use or sequestration. In its most advanced configuration, this new concept offers the promise to become the technology link from today's Rankine cycle steam power plants to tomorrow's advanced energy plants. The objective of this work is to develop and verify the high temperature chemical and thermal looping process concept at a small-scale pilot facility in order to enable AL to design, construct and demonstrate a pre-commercial, prototype version of this advanced system. In support of this objective, Alstom and DOE started a multi-year program, under this contract. Before the contract started, in a preliminary phase (Phase 0) Alstom funded and built the required small-scale pilot facility (Process Development Unit, PDU) at its Power Plant Laboratories in Windsor, Connecticut. Construction was completed in calendar year 2003. The objective for Phase I was to develop the indirect combustion loop with CO{sub 2} separation, and also syngas production from coal with the calcium sulfide (CaS)/calcium sulfate (CaSO{sub 4}) loop utilizing the PDU facility. The results of Phase I were reported in Reference 1, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase I Report' The objective for Phase II was to develop the carbonate loop--lime (CaO)/calcium carbonate (CaCO{sub 3}) loop, integrate it with the gasification loop from Phase I, and ultimately demonstrate the feasibility of hydrogen production from the combined loops. The results of this program were reported in Reference 3, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase II Report'. The objective of Phase III is to operate the pilot plant to obtain enough engineering information to design a prototype of the commercial Chemical Looping concept. The activities include modifications to the Phase II Chemical Looping PDU, solids transportation studies, control and instrumentation studies and additional cold flow modeling. The deliverable is a report making recommendations for preliminary design guidelines for the prototype plant, results from the pilot plant testing and an update of the commercial plant economic estimates.

Herbert Andrus; Gregory Burns; John Chiu; Gregory Lijedahl; Peter Stromberg; Paul Thibeault

2009-01-07T23:59:59.000Z

257

United States Industrial Motor Systems Market Opportunities Assessment: Executive Summary  

Energy.gov (U.S. Department of Energy (DOE))

In addition to serving DOE's program planning and evaluation needs, the Market Assessment is designed to be of value to manufacturers, distributors, engineers, and others int he supply channels for motor systems.

258

Optimal control system design of an acid gas removal unit for an IGCC power plants with CO2 capture  

SciTech Connect

Future IGCC plants with CO{sub 2} capture should be operated optimally in the face of disturbances without violating operational and environmental constraints. To achieve this goal, a systematic approach is taken in this work to design the control system of a selective, dual-stage Selexol-based acid gas removal (AGR) unit for a commercial-scale integrated gasification combined cycle (IGCC) power plant with pre-combustion CO{sub 2} capture. The control system design is performed in two stages with the objective of minimizing the auxiliary power while satisfying operational and environmental constraints in the presence of measured and unmeasured disturbances. In the first stage of the control system design, a top-down analysis is used to analyze degrees of freedom, define an operational objective, identify important disturbances and operational/environmental constraints, and select the control variables. With the degrees of freedom, the process is optimized with relation to the operational objective at nominal operation as well as under the disturbances identified. Operational and environmental constraints active at all operations are chosen as control variables. From the results of the optimization studies, self-optimizing control variables are identified for further examination. Several methods are explored in this work for the selection of these self-optimizing control variables. Modifications made to the existing methods will be discussed in this presentation. Due to the very large number of candidate sets available for control variables and due to the complexity of the underlying optimization problem, solution of this problem is computationally expensive. For reducing the computation time, parallel computing is performed using the Distributed Computing Server (DCS) and the Parallel Computing toolbox from Mathworks. The second stage is a bottom-up design of the control layers used for the operation of the process. First, the regulatory control layer is designed followed by the supervisory control layer. Finally, an optimization layer is designed. In this paper, the proposed two-stage control system design approach is applied to the AGR unit for an IGCC power plant with CO{sub 2} capture. Aspen Plus Dynamics is used to develop the dynamic AGR process model while MATLAB is used to perform the control system design and for implementation of model predictive control (MPC).

Jones, D.; Bhattacharyya, D.; Turton, R.; Zitney, S.

2012-01-01T23:59:59.000Z

259

Alkali injection system with controlled CO.sub.2 /O.sub.2 ratios for combustion of coal  

DOE Patents (OSTI)

A high temperature combustion process for an organic fuel containing sulfur n which the nitrogen of air is replaced by carbon dioxide for combination with oxygen with the ratio of CO.sub.2 /O.sub.2 being controlled to generate combustion temperatures above 2000 K. for a gas-gas reaction with SO.sub.2 and an alkali metal compound to produce a sulfate and in which a portion of the carbon-dioxide rich gas is recycled for mixing with oxygen and/or for injection as a cooling gas upstream from heating exchangers to limit fouling of the exchangers, with the remaining carbon-dioxide rich gas being available as a source of CO.sub.2 for oil recovery and other purposes.

Berry, Gregory F. (Naperville, IL)

1988-01-01T23:59:59.000Z

260

Investigation of the liquid/vapor composition of compressed liquid CO2 with N2 and O2 in integrated pollutant removal systems for coal combustion  

SciTech Connect

Accurate prediction of the processes in Integrated Pollutant Removal (IPR) using compression and condensation of coal combustion products requires an understanding of the liquid/vapor ternary CO2/O2/N2 system. At conditions close to the critical point of CO2 the existing equations of state deviate from the sparse measured results available in the literature. Building on existing data and procedures, the USDOE/Albany Research Center has designed an apparatus for examining compositions in this region. The design of the apparatus and planned initial experiments are presented.

Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.; Penner, Larry R.; Gerdemann, Stephen J.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Modeling Energy Flow in an Integrated Pollutant Removal (IPR) System with CO2 Capture Integrated with Oxy-fuel Combustion  

Science Journals Connector (OSTI)

Oxy-coal combustion is one of the technical solutions for mitigating CO2 in thermal power plants. ... Currently, more than 85% of the energy that drives modern economies comes from fossil fuels, and this has stimulated research and development into more sustainable alternative energy sources. ... Other species, such as SO2, various nitrogen compounds, HCl, and Hg, are also present in quantities dependent upon the fossil fuel composition and the amount of air that leaks into the boiler. ...

Sivaram Harendra; Danylo Oryshcyhn; Stephen Gerdemann; Thomas Ochs; John Clark

2012-10-13T23:59:59.000Z

262

Chemical Looping Combustion  

Science Journals Connector (OSTI)

Chemical looping combustion (CLC) and looping cycles in general represent an important new ... technologies, which can be deployed for direct combustion as well as be used in gasification...2...stream suitable fo...

Edward John (Ben) Anthony

2012-01-01T23:59:59.000Z

263

Chemistry of Combustion Processes  

Science Journals Connector (OSTI)

The quantitative description and understanding of combustion processes needs extreme computational efforts and has at ... treatment can give a lot of insight into combustion processes, as demonstrated in the foll...

J. Warnatz

2000-01-01T23:59:59.000Z

264

Zevenhoven & Kilpinen CROSS EFFECTS, TOTAL SYSTEM LAY-OUT 13.6.2001 10-1 Figure 10.1 Typical pulverised coal combustion and gas clean-up system: dry scrubber +  

E-Print Network (OSTI)

pulverised coal combustion and gas clean-up system: dry scrubber + baghouse filter for SO2 and particulate For a conventional pulverised coal-fired power plant a set-up is shown in Figure 10.1, with a gas clean-up system scrubber (pH ~ 6) 60 - 70 7 Re-heater 350 - 400 8 SCR DeNOx 300 - 400 9 Active coke bed 100 - 150 Figure 10

Zevenhoven, Ron

265

ME 374C Combustion Engine Processes ABET EC2000 syllabus  

E-Print Network (OSTI)

combustion engines, fuels, carburetion, combustion, exhaust emissions, knock, fuel injection, and factors engine, although diesels and 2-strokes are also discussed. Topics Covered (# of classes per topic): 1 of an Engineering System 4. Introduction to Engine Modeling 5. Fuels 6. Combustion and Knock 7. 4-stroke SI Engines

Ben-Yakar, Adela

266

United States Industrial Electric Motor Systems Market Opportunities Assessment  

Energy.gov (U.S. Department of Energy (DOE))

The objectives of the Market Assessment were to: Develop a detailed profile of the stock of motor-driven equipment in U.S. industrial facilities; Characterize and estimate the magnitude of opportunities to improve the energy efficiency of industrial motor systems; Develop a profile of motor system purchase and maintenance practices; Develop and implement a procedure to update the detailed motor profile on a regular basis using readily available market information; and, Develop methods to estimate the energy savings and market effects attributable to the Motor Challenge Program.

267

Argonne TTRDC - Engines - Combustion Visualization - emissions,  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Visualization Combustion Visualization Exploring Combustion Using Advanced Imaging Techniques In the photo, the GM diesel test cell is shown with vehicle exhaust aftertreatment hardware (diesel particulate filtration and diesel oxidation catalyst) along with other advanced technology-such as a variable geometry turbocharger, cooled exhaust gas recirculation and a common-rail fuel injection system. Fig. 1. The GM diesel test cell is shown with vehicle exhaust aftertreatment hardware (diesel particulate filtration and diesel oxidation catalyst) along with other advanced technology-such as a variable geometry turbocharger, cooled exhaust gas recirculation and a common-rail fuel injection system. Two-dimensional image of hydrogen combustion OH chemiluminescence. Fig. 2. Two-dimensional image of hydrogen combustion OH chemiluminescence.

268

Diode pumped solid state kilohertz disk laser system for time-resolved combustion diagnostics under microgravity at the drop tower Bremen  

SciTech Connect

We describe a specially designed diode pumped solid state laser system based on the disk laser architecture for combustion diagnostics under microgravity (?g) conditions at the drop tower in Bremen. The two-stage oscillator-amplifier-system provides an excellent beam profile (TEM{sub 00}) at narrowband operation (?? < 1 pm) and is tunable from 1018 nm to 1052 nm. The laser repetition rate of up to 4 kHz at pulse durations of 10 ns enables the tracking of processes on a millisecond time scale. Depending on the specific issue it is possible to convert the output radiation up to the fourth harmonic around 257 nm. The very compact laser system is integrated in a slightly modified drop capsule and withstands decelerations of up to 50 g (>11 ms). At first the concept of the two-stage disk laser is briefly explained, followed by a detailed description of the disk laser adaption to the drop tower requirements with special focus on the intended use under ?g conditions. In order to demonstrate the capabilities of the capsule laser as a tool for ?g combustion diagnostics, we finally present an investigation of the precursor-reactions before the droplet ignition using 2D imaging of the Laser Induced Fluorescence of formaldehyde.

Wagner, Volker; Paa, Wolfgang; Triebel, Wolfgang [Institute of Photonic Technology, Laser Diagnostics, Albert-Einstein-Str. 9, 07745 Jena (Germany)] [Institute of Photonic Technology, Laser Diagnostics, Albert-Einstein-Str. 9, 07745 Jena (Germany); Eigenbrod, Christian; Klinkov, Konstantin [Center of Applied Space Technology and Microgravity, University Bremen, Am Fallturm, 28359 Bremen (Germany)] [Center of Applied Space Technology and Microgravity, University Bremen, Am Fallturm, 28359 Bremen (Germany); Larionov, Mikhail; Giesen, Adolf; Stolzenburg, Christian [Institut fr Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart (Germany)] [Institut fr Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart (Germany)

2014-03-15T23:59:59.000Z

269

Building America Expert Meeting: Combustion Safety  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Meeting: Combustion Safety Meeting: Combustion Safety L. Brand Partnership for Advanced Residential Retrofit March 2013 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, subcontractors, or affiliated partners makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply

270

Fuel-Induced System Responses The Role Unconventional Fuels May Play in Altering Exhaust Conditions from Conventional and Low Temperature Modes of Combustion  

Energy.gov (U.S. Department of Energy (DOE))

Fuel properties and low temperature combustion e alters conditions thereby affecting exhaust-based thermoelectric device performance

271

Chemical Looping for Combustion and Hydrogen Production  

NLE Websites -- All DOE Office Websites (Extended Search)

ChemiCal looping for Combustion and ChemiCal looping for Combustion and hydrogen produCtion Objective The objective of this project is to determine the benefits of chemical looping technology used with coal to reduce CO 2 emissions. Background Chemical looping is a new method to convert coal or gasified coal to energy. In chemical looping, there is no direct contact between air and fuel. The chemical looping process utilizes oxygen from metal oxide oxygen carrier for fuel combustion, or for making hydrogen by "reducing" water. In combustion applications, the products of chemical looping are CO 2 and H 2 O. Thus, once the steam is condensed, a relatively pure stream of CO 2 is produced ready for sequestration. The production of a sequestration ready CO 2 stream does not require any additional separation units

272

J.K. Spruce power plant, Unit 1, San Antonio, Texas  

SciTech Connect

CPS Energy's J.K. Spruce power plant, Unit 1 was recently recognised by the EUCG Fossil Productivity Committee as the best performer in the large coal plant category over the 2002-2006 evaluation period. The competition was tough, with more than 80 plants in the running, but Unit 1 emerged as the clear winner by earning top points for high plant reliability and very low nonfuel O & M costs. It meets its environmental goals when burning PRB coal in its tangentially fired furnace with recently upgraded low NOx burners, overfire air and a new combustion control system. A baghouse and wet flue gas desulfurization system clean up combustion products. 3 photos.

Peltier, R. [CPS Energy (United States)

2008-10-15T23:59:59.000Z

273

Variability in natural gas fuel composition and its effects on the performance of catalytic combustion systems. Final report for period September 18, 1998 - September 17, 2000  

SciTech Connect

Natural gas is composed primarily of methane with small amounts of higher hydrocarbons and diluents, which vary by region and over time. Compositions of natural gas from domestic and worldwide sources were surveyed with respect to content of higher hydrocarbons and diluents. The survey showed slight compositional variability between most of the gases, with a small fraction of them containing significantly larger contents of higher hydrocarbons than the mean. As gas-fired turbines will be used for power generation all over the world, they will need to tolerate operation with fuels with a wide variety of compositions, particularly with respect to the concentration of higher hydrocarbons and diluents. Subscale catalytic combustion modules typical of those used in gas turbine power generation with ultra low emissions of pollutants were tested in a subscale test system with natural gas alone and with added known levels of hydrocarbon compounds and diluents. The range of compositions tested contained the range observed in the survey. Test results were used to calculate the effect of composition on catalyst performance. The compositional variability is of little consequence to the catalyst for most of the gases in the survey, including nearly all of the gases delivered in the U.S. To accommodate the remaining gases, the catalyst inlet temperature must be lowered to maintain combustor durability. These results support commercial acceptance of catalytic combustion systems for use in natural gas fired turbines in distributed power generation with ultra low NO{sub x} emissions.

Ginter, David; Simchick, Chuck; Schlatter, Jim

2002-03-01T23:59:59.000Z

274

Great lakes fluidized-bed combustion. Final report  

SciTech Connect

A program was conducted to design, construct, and operate an industrial fluidized bed combustion (FBC) boiler demonstration plant with a capacity of 50,000 lb/h steam. The following were the objectives of the program: (1) to extend the fluidized bed boiler design by employing natural circulation cooling; (2) to design, build, operate, test, and demonstrate a fluidized bed boiler that could burn high sulfur coal in an environmentally acceptable manner; and (3) to obtain sufficient data for industry to make an objective appraisal of fluidized bed coal burning boilers. Following a five-year design, development, and construction effort, the demonstration plant was first operated in June of 1981. Initial operation identified several equipment and operating problems, particularly in the areas of the fuel preparation and fuel feed systems. Unit operation and availability steadily improved, culminating in a 30-day continuous run ending in May 1982. Following shutdown, major problem areas such as bed tube failures were addressed by C-E and rectified prior to the start of the test program. Shakedown/testing operation commenced on August 12, 1983. The objectives for the test program were to establish the unit operating conditions required to optimize SO/sub 2/ removal and combustion efficiency for different operating modes, and to evaluate the long-term performance of components which are essential for reliable FBC operation. A total of 23 tests were run from February 16, 1984 to April 19, 1984. The test results demonstrated that FBC is an environmentally and commercially sound technology. Specificially, the required sulfur removal, low NO/sub x//CO emissions and high combustion efficiencies can be readily achieved. This report identifies the effects of recycle, excess air, Ca/S mole ratio, and overfire air on combustion efficiency, boiler efficiency, and emissions. 6 refs., 97 figs., 8 tabs.

Not Available

1985-12-01T23:59:59.000Z

275

Comparing the greenhouse gas emissions from three alternative waste combustion concepts  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Significant GHG reductions are possible by efficient WtE technologies. Black-Right-Pointing-Pointer CHP and high power-to-heat ratio provide significant GHG savings. Black-Right-Pointing-Pointer N{sub 2}O and coal mine type are important in LCA GHG emissions of FBC co-combustion. Black-Right-Pointing-Pointer Substituting coal and fuel oil by waste is beneficial in electricity and heat production. Black-Right-Pointing-Pointer Substituting natural gas by waste may not be reasonable in CHP generation. - Abstract: Three alternative condensing mode power and combined heat and power (CHP) waste-to-energy concepts were compared in terms of their impacts on the greenhouse gas (GHG) emissions from a heat and power generation system. The concepts included (i) grate, (ii) bubbling fluidised bed (BFB) and (iii) circulating fluidised bed (CFB) combustion of waste. The BFB and CFB take advantage of advanced combustion technology which enabled them to reach electric efficiency up to 35% and 41% in condensing mode, respectively, whereas 28% (based on the lower heating value) was applied for the grate fired unit. A simple energy system model was applied in calculating the GHG emissions in different scenarios where coal or natural gas was substituted in power generation and mix of fuel oil and natural gas in heat generation by waste combustion. Landfilling and waste transportation were not considered in the model. GHG emissions were reduced significantly in all of the considered scenarios where the waste combustion concepts substituted coal based power generation. With the exception of condensing mode grate incinerator the different waste combustion scenarios resulted approximately in 1 Mton of fossil CO{sub 2}-eq. emission reduction per 1 Mton of municipal solid waste (MSW) incinerated. When natural gas based power generation was substituted by electricity from the waste combustion significant GHG emission reductions were not achieved.

Vainikka, Pasi, E-mail: pasi.vainikka@vtt.fi [VTT, Koivurannantie 1, FIN 40101 Jyvaeskylae (Finland); Tsupari, Eemeli; Sipilae, Kai [VTT, Koivurannantie 1, FIN 40101 Jyvaeskylae (Finland); Hupa, Mikko [Aabo Akademi Process Chemistry Centre, Piispankatu 8, FIN 20500 Turku (Finland)

2012-03-15T23:59:59.000Z

276

Carving Differential Unit Test Cases from System Test Cases Sebastian Elbaum, Hui Nee Chin, Matthew B. Dwyer, Jonathan Dokulil  

E-Print Network (OSTI)

Carving Differential Unit Test Cases from System Test Cases Sebastian Elbaum, Hui Nee Chin, Matthew - Lincoln Lincoln, Nebraska {elbaum,hchin,dwyer,jdokulil}@cse.unl.edu ABSTRACT Unit test cases are focused and efficient. System tests are effective at exercising complex usage patterns. Differential unit tests (DUT

Rothermel, Gregg

277

Vortex driven flame dynamics and combustion instability  

E-Print Network (OSTI)

Combustion instability in premixed combustors mostly arises due to the coupling between heat release rate dynamics and system acoustics. It is crucial to understand the instability mechanisms to design reliable, high ...

Altay, Hurrem Murat

2005-01-01T23:59:59.000Z

278

Criticality prevention during postaccident decontamination of TMI-2 (Three Mile Island Unit 2) plant systems  

SciTech Connect

Following the accident at Three Mile Island Unit 2 (TMI-2), the likelihood of a criticality outside of the reactor coolant system (RCS) during the plant cleanup was very small. Given the consequence of any possible critical event in the TMI-2 systems, However, it was always necessary to ensure that all steps were taken to prevent criticality. Therefore, engineered controls were developed to ensure that decontamination of plant systems containing fuel material could be conducted in a manner that precluded criticality.

Palau, G. L.

1988-01-01T23:59:59.000Z

279

STATEMENT OF CONSIDERATIONS REQUEST BY UNITED SOLAR SYSTEMS CORPORATION FOR AN  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. AND FOREIGN RIGHTS UNDER U.S. AND FOREIGN RIGHTS UNDER SUBCONTRACT NO. NREL-ZAN-3-13318 UNDER DOE PRIME CONTRACT NO. DE-AC36-83CH10093, WAIVER NO. W(A)-94-020, CH0836. The attached petition by United Solar Systems Corporation (hereafter United Solar) is for an advance waiver of patent rights under Subcontract No. NREL-ZAN-3-13318, under DOE Contract No. DE- AC36-83CH10093. United Solar requests that the Department of Energy grant an advance waiver for the domestic and foreign rights to inventions developed in the performance of the above identified subcontract without limitation as to field of use and that these rights will be retained by United Solar subject to the standard Advance Waiver Patent Rights Clause with the enclosed U.S. Competitiveness paragraph as previously agreed to. Additionally,

280

Sandia National Laboratories Combustion Research Facility  

E-Print Network (OSTI)

Hydrogen & Combustion Technologies Department Livermore, CA DOE Hydrogen, Fuel Cells, and Infrastructure collector, compressor, high-P storage, pump, FC stack (efficiency vs power) · Developing: ICE gen-set, wind Borns, Scott Jones, Paul Pickard ­ Economic modeling of H2 unit cost · Production: reforming

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


281

Recovery Act: Oxy-Combustion Technology Development for Industrial-Scale Boiler Applications  

SciTech Connect

This Topical Report outlines guidelines and key considerations for design and operation of pulverized coal-fired boilers for oxy-combustion. The scope addressed includes only the boiler island, not the entire oxy-fired CO{sub 2} capture plant. These guidelines are primarily developed for tangential-fired boilers and focus on designs capable of dual air and oxy-fired operation. The guidelines and considerations discussed are applicable to both new units and existing boiler retrofits. These guidelines are largely based on the findings from the extensive 15 MW{sub th} pilot testing and design efforts conducted under this project. A summary level description is provided for each major aspect of boiler design impacted by oxy-combustion, and key considerations are discussed for broader application to different utility and industrial designs. Guidelines address the boiler system arrangement, firing system, boiler thermal design, ducting, materials, control system, and other key systems.

Levasseur, Armand

2014-01-01T23:59:59.000Z

282

Flue Gas Purification Utilizing SOx/NOx Reactions During Compression of CO{sub 2} Derived from Oxyfuel Combustion  

SciTech Connect

The United States wishes to decrease foreign energy dependence by utilizing the countrys significant coal reserves, while stemming the effects of global warming from greenhouse gases. In response to these needs, Air Products has developed a patented process for the compression and purification of the CO{sub 2} stream from oxyfuel combustion of pulverized coal. The purpose of this project was the development and performance of a comprehensive experimental and engineering evaluation to determine the feasibility of purifying CO{sub 2} derived from the flue gas generated in a tangentially fired coal combustion unit operated in the oxy-combustion mode. Following the design and construction of a 15 bar reactor system, Air Products conducted two test campaigns using the slip stream from the tangentially fired oxy-coal combustion unit. During the first test campaign, Air Products evaluated the reactor performance based on both the liquid and gaseous reactor effluents. The data obtained from the test run has enabled Air Products to determine the reaction and mass transfer rates, as well as the effectiveness of the reactor system. During the second test campaign, Air Products evaluated reactor performance based on effluents for different reactor pressures, as well as water recycle rates. Analysis of the reaction equations indicates that both pressure and water flow rate affect the process reaction rates, as well as the overall reactor performance.

Fogash, Kevin

2010-09-30T23:59:59.000Z

283

Flue Gas Perification Utilizing SOx/NOx Reactions During Compression of CO2 Derived from Oxyfuel Combustion  

SciTech Connect

The United States wishes to decrease foreign energy dependence by utilizing the countrys significant coal reserves, while stemming the effects of global warming from greenhouse gases. In response to these needs, Air Products has developed a patented process for the compression and purification of the CO2 stream from oxyfuel combustion of pulverized coal. The purpose of this project was the development and performance of a comprehensive experimental and engineering evaluation to determine the feasibility of purifying CO2 derived from the flue gas generated in a tangentially fired coal combustion unit operated in the oxy-combustion mode. Following the design and construction of a 15 bar reactor system, Air Products conducted two test campaigns using the slip stream from the tangentially fired oxy-coal combustion unit. During the first test campaign, Air Products evaluated the reactor performance based on both the liquid and gaseous reactor effluents. The data obtained from the test run has enabled Air Products to determine the reaction and mass transfer rates, as well as the effectiveness of the reactor system. During the second test campaign, Air Products evaluated reactor performance based on effluents for different reactor pressures, as well as water recycle rates. Analysis of the reaction equations indicates that both pressure and water flow rate affect the process reaction rates, as well as the overall reactor performance.

Kevin Fogash

2010-09-30T23:59:59.000Z

284

NETL: IEP – Post-Combustion CO2 Emissions Control - Oxy-Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

IEP - Oxy-Combustion CO2 Emissions Control IEP - Oxy-Combustion CO2 Emissions Control Oxy-Combustion Technology Development for Industrial-Scale Boiler Applications Project No.: DE-NT0005290 Alstom oxy-combustion test facility Alstom oxy-combustion test facility. Alstom will develop an oxyfuel firing system design specifically for retrofit to tangential-fired (T-fired) boilers and provide information to address the technical gaps for commercial boiler design. Several oxyfuel system design concepts, such as internal flue gas recirculation and various oxygen injection schemes, will be evaluated for cost-effectiveness in satisfying furnace design conditions in a T-fired boiler. The evaluation will use an array of tools, including Alstom's proprietary models and design codes, along with 3-D computational fluid dynamics modeling. A

285

Chemical Looping Combustion Cold Flow Model commissioning and performance evaluation.  

E-Print Network (OSTI)

?? SINTEF and NTNU are planning to build a 150 kWth Chemical Looping Combustion (CLC) reactor system. This is new technology and the CLC reactor (more)

Tjstheim, Sindre

2010-01-01T23:59:59.000Z

286

Advances in Diode Laser Absorption Sensors for Combustion and Propulsion  

Science Journals Connector (OSTI)

Progress is reported in the evolution of diode laser sensors for combustion and propulsion systems. Applications are diverse, ranging from IC engines and gas turbine combustors to...

Hanson, Ronald K

287

Low NOx combustion  

SciTech Connect

Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream.

Kobayashi; Hisashi (Putnam Valley, NY), Bool, III; Lawrence E. (Aurora, NY)

2007-06-05T23:59:59.000Z

288

Low NOx combustion  

SciTech Connect

Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream.

Kobayashi, Hisashi (Putnam Valley, NY); Bool, III, Lawrence E. (Aurora, NY)

2008-10-21T23:59:59.000Z

289

Introduction to Biomass Combustion  

Science Journals Connector (OSTI)

Biomass was the major fuel in the world ... hundreds when coal then became dominant. The combustion of solid biofuels as a primary energy...

Jenny M. Jones; Amanda R. Lea-Langton

2014-01-01T23:59:59.000Z

290

NETL: IEP - Post-Combustion CO2 Emissions Control - Post-Combustion CO2  

NLE Websites -- All DOE Office Websites (Extended Search)

Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Project No.: DE-FE0004274 3H Company will evaluate the feasibility of its "Self-Concentrating Absorbent CO2 Capture Process." The process is based on amines in a non-aqueous solvent which, upon reaction with CO2, separate into two distinct phases: a CO2-rich liquid phase and a dilute lean phase. The proposed process offers several potential advantages. Preliminary experimental data show that the process has the potential of reducing the total regeneration energy by as much as 70 percent. The solvent has high working capacity, thus required solvent volume would be lower than that required in a currently available amine system. This results in lower pumping requirements, lower auxiliary power demands, and reduced equipment size. In addition, since the solvent is non-aqueous, corrosion issues would be reduced. During the three-year project, an engineering design supported by laboratory data and economic justification will be developed to construct and operate a slipstream demonstration facility at an E-ON power plant in the United States as a next stage of commercialization development.

291

Odorant Receptor Expression Defines Functional Units in the Mouse Olfactory System  

E-Print Network (OSTI)

) and influ- ence the guidance of OSN axons to synaptic targets in the olfactory bulb (OB). OSNs expressing of single neurons from gene- targeted mice in which the green fluorescent protein is coex- pressed and arrangement of glomerular functional units. Key words: olfaction; olfactory system; olfactory bulb; glo

Bozza, Thomas

292

Multi-unit Operations in Non-Nuclear Systems: Lessons Learned for Small Modular Reactors  

SciTech Connect

The nuclear-power community has reached the stage of proposing advanced reactor designs to support power generation for decades to come. Small modular reactors (SMRs) are one approach to meet these energy needs. While the power output of individual reactor modules is relatively small, they can be grouped to produce reactor sites with different outputs. Also, they can be designed to generate hydrogen, or to process heat. Many characteristics of SMRs are quite different from those of current plants and may be operated quite differently. One difference is that multiple units may be operated by a single crew (or a single operator) from one control room. The U.S. Nuclear Regulatory Commission (NRC) is examining the human factors engineering (HFE) aspects of SMRs to support licensing reviews. While we reviewed information on SMR designs to obtain information, the designs are not completed and all of the design and operational information is not yet available. Nor is there information on multi-unit operations as envisioned for SMRs available in operating experience. Thus, to gain a better understanding of multi-unit operations we sought the lesson learned from non-nuclear systems that have experience in multi-unit operations, specifically refineries, unmanned aerial vehicles and tele-intensive care units. In this paper we report the lessons learned from these systems and the implications for SMRs.

OHara J. M.; Higgins, J.; DAgostino, A.

2012-01-17T23:59:59.000Z

293

Pacific Northwest National Laboratory Facility Radionuclide Emissions Units and Sampling Systems  

SciTech Connect

Battelle-Pacific Northwest Division operates numerous research and development (R and D) laboratories in Richland, WA, including those associated with Pacific Northwest National Laboratory (PNNL) on the U.S. Department of Energy (DOE)'s Hanford Site and PNNL Site that have the potential for radionuclide air emissions. The National Emission Standard for Hazardous Air Pollutants (NESHAP 40 CFR 61, Subparts H and I) requires an assessment of all emission units that have the potential for radionuclide air emissions. Potential emissions are assessed annually by PNNL staff members. Sampling, monitoring, and other regulatory compliance requirements are designated based upon the potential-to-emit dose criteria found in the regulations. The purpose of this document is to describe the facility radionuclide air emission sampling program and provide current and historical facility emission unit system performance, operation, and design information. For sampled systems, a description of the buildings, exhaust units, control technologies, and sample extraction details is provided for each registered emission unit. Additionally, applicable stack sampler configuration drawings, figures, and photographs are provided. Deregistered emission unit details are provided as necessary for up to 5 years post closure.

Barnett, J. M.; Brown, Jason H.; Walker, Brian A.

2012-04-01T23:59:59.000Z

294

Experimental Program for the validation of the design of a 150KWth Chemical looping Combustion reactor system with main focus on the reactor flexibility and operability.  

E-Print Network (OSTI)

?? Chemical Looping Combustion is one of the most promising way to limit the CO2 release to the atmosphere among the other technologies for Carbon (more)

Ghorbaniyan, Masoud

2011-01-01T23:59:59.000Z

295

Real-Time Combustion Controls and Diagnostics Sensors (CCADS)  

SciTech Connect

The present invention is directed to an apparatus for the monitoring of the combustion process within a combustion system. The apparatus comprises; a combustion system, a means for supplying fuel and an oxidizer, a device for igniting the fuel and oxidizer in order to initiate combustion, and a sensor for determining the current conducted by the combustion process. The combustion system comprises a fuel nozzle and an outer shell attached to the combustion nozzle. The outer shell defines a combustion chamber. Preferably the nozzle is a lean premix fuel nozzle (LPN). Fuel and an oxidizer are provided to the fuel nozzle at separate rates. The fuel and oxidizer are ignited. A sensor positioned within the combustion system comprising at least two electrodes in spaced-apart relationship from one another. At least a portion of the combustion process or flame is between the first and second electrodes. A voltage is applied between the first and second electrodes and the magnitude of resulting current between the first and second electrodes is determined.

Thornton, J.D.; Richard, G.A.; Dodrill, K.A.; Nutter, R.S. Jr; Straub, D.

2005-05-03T23:59:59.000Z

296

The Combustion of Solid Biomass  

Science Journals Connector (OSTI)

The combustion of solid biomass is covered in this chapter. This covers the general mechanism of combustion, moisture evaporation, devolatilisation, the combustion of the volatiles gases and tars and finally char...

Jenny M. Jones; Amanda R. Lea-Langton

2014-01-01T23:59:59.000Z

297

Enhanced Combustion Low NOx Pulverized Coal Burner  

SciTech Connect

For more than two decades, Alstom Power Inc. (Alstom) has developed a range of low cost, infurnace technologies for NOx emissions control for the domestic U.S. pulverized coal fired boiler market. This includes Alstom's internally developed TFS 2000{trademark} firing system, and various enhancements to it developed in concert with the U.S. Department of Energy. As of the date of this report, more than 270 units representing approximately 80,000 MWe of domestic coal fired capacity have been retrofit with Alstom low NOx technology. Best of class emissions range from 0.18 lb/MMBtu for bituminous coal to 0.10 lb/MMBtu for subbituminous coal, with typical levels at 0.24 lb/MMBtu and 0.13 lb/MMBtu, respectively. Despite these gains, NOx emissions limits in the U.S. continue to ratchet down for new and existing boiler equipment. On March 10, 2005, the Environmental Protection Agency (EPA) announced the Clean Air Interstate Rule (CAIR). CAIR requires 25 Eastern states to reduce NOx emissions from the power generation sector by 1.7 million tons in 2009 and 2.0 million tons by 2015. Low cost solutions to meet such regulations, and in particular those that can avoid the need for a costly selective catalytic reduction system (SCR), provide a strong incentive to continue to improve low NOx firing system technology to meet current and anticipated NOx control regulations. The overall objective of the work is to develop an enhanced combustion, low NOx pulverized coal burner, which, when integrated with Alstom's state-of-the-art, globally air staged low NOx firing systems will provide a means to achieve: Less than 0.15 lb/MMBtu NOx emissions when firing a high volatile Eastern or Western bituminous coal, Less than 0.10 lb/MMBtu NOx emissions when firing a subbituminous coal, NOx reduction costs at least 25% lower than the costs of an SCR, Validation of the NOx control technology developed through large (15 MWt) pilot scale demonstration, and Documentation required for economic evaluation and commercial application. During the project performance period, Alstom performed computational fluid dynamics (CFD) modeling and large pilot scale combustion testing in its Industrial Scale Burner Facility (ISBF) at its U.S. Power Plant Laboratories facility in Windsor, Connecticut in support of these objectives. The NOx reduction approach was to optimize near-field combustion to ensure that minimum NOx emissions are achieved with minimal impact on unburned carbon in ash, slagging and fouling, corrosion, and flame stability/turn-down. Several iterations of CFD and combustion testing on a Midwest coal led to an optimized design, which was extensively combustion tested on a range of coals. The data from these tests were then used to validate system costs and benefits versus SCR. Three coals were evaluated during the bench-scale and large pilot-scale testing tasks. The three coals ranged from a very reactive subbituminous coal to a moderately reactive Western bituminous coal to a much less reactive Midwest bituminous coal. Bench-scale testing was comprised of standard ASTM properties evaluation, plus more detailed characterization of fuel properties through drop tube furnace testing and thermogravimetric analysis. Bench-scale characterization of the three test coals showed that both NOx emissions and combustion performance are a strong function of coal properties. The more reactive coals evolved more of their fuel bound nitrogen in the substoichiometric main burner zone than less reactive coal, resulting in the potential for lower NOx emissions. From a combustion point of view, the more reactive coals also showed lower carbon in ash and CO values than the less reactive coal at any given main burner zone stoichiometry. According to bench-scale results, the subbituminous coal was found to be the most amenable to both low NOx, and acceptably low combustibles in the flue gas, in an air staged low NOx system. The Midwest bituminous coal, by contrast, was predicted to be the most challenging of the three coals, with the Western bituminous coal predicted to beh

David Towle; Richard Donais; Todd Hellewell; Robert Lewis; Robert Schrecengost

2007-06-30T23:59:59.000Z

298

The Daniell cell, Ohm's law, and the emergence of the International System of Units  

Science Journals Connector (OSTI)

Telegraphy originated in the 1830s and 40?s and flourished in the following decades but with a patchwork of electrical standards. Electromotive force was for the most part measured in units of the predominant Daniell cell but each telegraphy company had their own resistance standard. In 1862 the British Association for the Advancement of Science formed a committee to address this situation. By 1873 they had given definition to the electromagnetic system of units (emu) and defined the practical units of the ohm as 109?emu units of resistance and the volt as 108?emu units of electromotive force. These recommendations were ratified and expanded upon in a series of international congresses held between 1881 and 1904. A proposal by Giovanni Giorgi in 1901 took advantage of a coincidence between the conversion of the units of energy in the emu system (the erg) and in the practical system (the Joule). As it was the same conversion factor existed between the cgs based emu system and a theretofore undefined MKS system. By introducing another unit X (where X could be any of the practical electrical units) Giorgi demonstrated that a self-consistent MKSX system was tenable without the need for multiplying factors. Ultimately the ampere was selected as the fourth unit. It took nearly 60 years but in 1960 Giorgi's proposal was incorporated as the core of the newly inaugurated International System of Units (SI). This article surveys the physics physicists and events that contributed to those developments.

2014-01-01T23:59:59.000Z

299

Evaluation of performance of combined heat and power systems with dual power generation units (D-CHP).  

E-Print Network (OSTI)

?? In this research, a new combined heat and power (CHP) system configuration has been proposed that uses two power generation units (PGU) operating simultaneously (more)

Knizley, Alta Alyce

2013-01-01T23:59:59.000Z

300

Remedial System Performance Improvement for the 200-ZP-1_PW-1 Operable Units at Hanford  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hanford Operations Review Report: Feasibility Study Strategies and Remedial System Performance Improvement for the 200- ZP-1/PW-1 Operable Units at Hanford Prepared for Office of Groundwater and Soil Remediation Office of Environmental Management February 9, 2007 i EXECUTIVE SUMMARY At the request of the U.S. Department of Energy, Headquarters' Office of Environmental Management, the Office of Groundwater and Soil Remediation (EM-22), performed a Remediation System Evaluation (RSE) of the 200-ZP-1/PW-1 groundwater pump and treat (P&T) system, as well as the vadose zone Soil Vapor Extraction (SVE) system at the Hanford

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

CFD modelling of air-fired and oxy-fuel combustion in a large-scale furnace at Loy Yang A brown coal power station  

Science Journals Connector (OSTI)

Oxy-fuel combustion technique is a viable option to reduce several types of greenhouse gases (GHGs) emissions from the pulverized coal (PC) combustion systems. In this paper, a computational fluid dynamics (CFD) modelling study has been developed in order to investigate the Victorian brown coal combustion in a 550MW utility boiler under the air-fired (reference case) and three oxy-fuel-fired scenarios. The reference firing case was modelled based on the operating conditions of Loy Yang A power plant located in the state of Victoria, Australia. While Chalmers oxy-fuel combustion approach was selected for the present oxy-fuel combustion simulations, which referred to as OF25 (25vol.% O2), OF27 (27vol.% O2), and OF29 (29vol.% O2). User-defined functions (UDFs) were written and incorporated into the CFD code to calculate the following mathematical models: the PC devolatilization, char burnout, multi-step chemical reactions, mass and heat transfer, carbon in fly-ash, and \\{NOx\\} formation/destruction. A level of confidence of the CFD model was achieved validating four different parameters of the conventional combustion case, as well as the previous preliminary CFD studies that conducted on a 100kW unit firing propane and lignite under oxy-fuel combustion environments. The numerical results of OF29 combustion condition were considerably similar to the reference firing results in terms of gas temperature levels and radiative heat transfer relative to the OF25 and OF27 combustion cases. This similarity was due to increasing the residence time of PC in the combustion zone and O2-enriched in feed oxidizer gases. A significant increase in the CO2 concentrations and a noticeable decrease in the \\{NOx\\} formation were observed under all oxy-fuel combustion scenarios. The combustion chemistry was adopted in these investigations in order to capture the effects of O2 concentrations and gas temperatures on the CO/CO2 production rate and equilibrium between H2 and H2O in the combustion zone. Also, the use of O2-enriched atmospheres during oxy-fuel-fired cases was slightly enhanced the carbon burnout rate. These predicted results were reasonably consistent with the experimental investigations and numerical modelling found in the literature. This study of Victorian brown coal oxy-fuel combustion in a large-scale tangentially-fired boiler is important prior to its implementation in real-life.

Audai Hussein Al-Abbas; Jamal Naser; David Dodds

2012-01-01T23:59:59.000Z

302

Hydrogen-or-Fossil-Combustion Nuclear Combined-Cycle Systems for Base- and Peak-Load Electricity Production  

SciTech Connect

A combined-cycle power plant is described that uses (1) heat from a high-temperature nuclear reactor to meet base-load electrical demands and (2) heat from the same high-temperature reactor and burning natural gas, jet fuel, or hydrogen to meet peak-load electrical demands. For base-load electricity production, fresh air is compressed; then flows through a heat exchanger, where it is heated to between 700 and 900 C by heat provided by a high-temperature nuclear reactor via an intermediate heat-transport loop; and finally exits through a high-temperature gas turbine to produce electricity. The hot exhaust from the Brayton-cycle gas turbine is then fed to a heat recovery steam generator that provides steam to a steam turbine for added electrical power production. To meet peak electricity demand, the air is first compressed and then heated with the heat from a high-temperature reactor. Natural gas, jet fuel, or hydrogen is then injected into the hot air in a combustion chamber, combusts, and heats the air to 1300 C-the operating conditions for a standard natural-gas-fired combined-cycle plant. The hot gas then flows through a gas turbine and a heat recovery steam generator before being sent to the exhaust stack. The higher temperatures increase the plant efficiency and power output. If hydrogen is used, it can be produced at night using energy from the nuclear reactor and stored until needed. With hydrogen serving as the auxiliary fuel for peak power production, the electricity output to the electric grid can vary from zero (i.e., when hydrogen is being produced) to the maximum peak power while the nuclear reactor operates at constant load. Because nuclear heat raises air temperatures above the auto-ignition temperatures of the various fuels and powers the air compressor, the power output can be varied rapidly (compared with the capabilities of fossil-fired turbines) to meet spinning reserve requirements and stabilize the electric grid. This combined cycle uses the unique characteristics of high-temperature reactors (T>700 C) to produce electricity for premium electric markets whose demands can not be met by other types of nuclear reactors. It may also make the use of nuclear reactors economically feasible in smaller electrical grids, such as those found in many developing countries. The ability to rapidly vary power output can be used to stabilize electric grid performance-a particularly important need in small electrical grids.

Forsberg, Charles W [ORNL; Conklin, Jim [ORNL

2007-09-01T23:59:59.000Z

303

Operable Unit 3-13, Group 7, SFE-20 Hot Waste Tank System Remedial Action Report  

SciTech Connect

This Remedial Action Report summarizes activities undertaken to remediate the Operable Unit 3-13, Group 7, SFE-20 Hot Waste Tank System at the Idaho Nuclear Technology and Engineering Center at the Idaho National Laboratory Site. The site addressed in this report was defined in the Operable Unit 3-13 Record of Decision and subsequent implementing documents. This report concludes that remediation requirements and cleanup goals established for the site have been accomplished and is hereafter considered a No Further Action site.

Lee Davison

2009-06-30T23:59:59.000Z

304

Operable Unit 3-13, Group 7, SFE-20 Hot Waste Tank System Remedial Action Request  

SciTech Connect

This Remedial Action Report summarizes activities undertaken to remediate the Operable Unit 3-13, Group 7, SFE-20 Hot Waste Tank System at the Idaho Nuclear Technology and Engineering Center at the Idaho National Laboratory Site. The site addressed in this report was defined in the Operable Unit 3-13 Record of Decision and subsequent implementing documents. This report concludes that remediation requirements and cleanup goals established for the site have been accomplished and is hereafter considered a No Further Action site.

L. Davison

2009-06-30T23:59:59.000Z

305

Circulating fluidised-bed combustion  

SciTech Connect

Steam generators with circulating fluidized-bed combustion systems (CFBC) are characterized by a high degree of environmental comparability and a wide acceptance for FBC boiler plants involving a wide fuel spectrum which ranges from dried brown coal to high-ash coal and low-volatile bituminous coal as well as wood waste and bark. These plants incorporate a variety of CFBC systems. The choice in favor of different system options was not motivated by the inherent fuel properties but has evolved from the progressive advancement in power station FBC technology. The article elucidates several FBC system variants.

Rettemeier, W.; von der Kammer, G. (Steinmueller (L.u.C.) GmbH, Gummersbach (Germany, F.R.))

1990-01-01T23:59:59.000Z

306

Coal Combustion Science  

SciTech Connect

The objective of this activity is to support the Office of Fossil Energy in executing research on coal combustion science. This activity consists of basic research on coal combustion that supports both the Pittsburgh Energy Technology Center Direct Utilization Advanced Research and Technology Development Program, and the International Energy Agency Coal Combustion Science Project. Specific tasks for this activity include: (1) coal devolatilization - the objective of this risk is to characterize the physical and chemical processes that constitute the early devolatilization phase of coal combustion as a function of coal type, heating rate, particle size and temperature, and gas phase temperature and oxidizer concentration; (2) coal char combustion -the objective of this task is to characterize the physical and chemical processes involved during coal char combustion as a function of coal type, particle size and temperature, and gas phase temperature and oxygen concentration; (3) fate of mineral matter during coal combustion - the objective of this task is to establish a quantitative understanding of the mechanisms and rates of transformation, fragmentation, and deposition of mineral matter in coal combustion environments as a function of coal type, particle size and temperature, the initial forms and distribution of mineral species in the unreacted coal, and the local gas temperature and composition.

Hardesty, D.R. (ed.); Fletcher, T.H.; Hurt, R.H.; Baxter, L.L. (Sandia National Labs., Livermore, CA (United States))

1991-08-01T23:59:59.000Z

307

Fifteenth combustion research conference  

SciTech Connect

The BES research efforts cover chemical reaction theory, experimental dynamics and spectroscopy, thermodynamics of combustion intermediates, chemical kinetics, reaction mechanisms, combustion diagnostics, and fluid dynamics and chemically reacting flows. 98 papers and abstracts are included. Separate abstracts were prepared for the papers.

NONE

1993-06-01T23:59:59.000Z

308

Combustion of high-sulfur coal and anthracite wastes in a rotary kiln combustor with an advanced internal air distributor  

SciTech Connect

Fluid bed combustors have received extensive testing with both high-sulfur coal and anthracite wastes. Rotary kilns are effective and popular devices for waste combustion. The Angelo Rotary Furnace{trademark} has been developed to improve the operation of rotary pyrolyzer/combustor systems through enhanced air distribution, which in this process is defined as staged, swirled combustion air injection. Fourteen of these new furnaces have been installed worldwide. Two units in Thailand, designed for rice hull feed with occasional lignite feed, have been recently started up. An older unit in Pennsylvania is being upgraded with a new, more advanced air distribution system for a series of tests this fall in which inexpensive high-sulfur coal and anthracite wastes will be fired with limestone. The purposes of these tests are to determine the burning characteristics of these two fuels in this system, to discover the Ca/S ratios necessary for operation of a rotary kiln combusting these fuels, and to observe the gas-borne emissions from the furnace. An extensive preliminary design study will be performed on a commercial installation for combustion of anthracite wastes. 14 refs., 5 figs., 1 tab.

Cobb, J.T. Jr. (Pittsburgh Univ., PA (USA)); Ahn, Y.K. (Gilbert/Commonwealth, Inc., Reading, PA (USA)); Angelo, J.F. (Universal Energy International, Inc., Little Rock, AR (USA))

1990-01-01T23:59:59.000Z

309

Design of Micro-grid System Based on Renewable Power Generation Units  

E-Print Network (OSTI)

Abstract- Micro-grid system is currently a conceptual solution to fulfill the commitment of reliable power delivery for future power systems. Renewable power sources such as wind and hydro offer the best potential for emission free power for future micro-grid systems. This paper presents a micro-grid system based on wind and hydro power sources and addresses issues related to operation, control, and stability of the system. The micro-grid system investigated in this paper represents a case study in Newfoundland, Canada. It consists of a small hydro generation unit and a wind farm that contains nine variable- speed, double-fed induction generator based wind turbines. Using Matlab/Simulink, the system is modeled and simulated to identify the technical issues involved in the operation of a micro-grid system based on renewable power generation units. The operational modes, technical challenges and a brief outline of conceptual approaches to addressing some of the technical issues are presented for further investigation.

Dr. K. Ravich; M. Manasa; Mr. P. Yohan Babu; G. V. P. Anjaneyulu

310

On the Design of a Sound System for a Mobile Audio Unit.  

E-Print Network (OSTI)

??A mobile audio unit is a wireless, battery-driven unit, the main purpose of which is to reproduce acoustic signals. This kind of unit can be (more)

Lindstrm, Fredric; Eriksson, John-Erik; Dahl, Mattias

2005-01-01T23:59:59.000Z

311

NETL: Pilot Testing of a Highly Effective Pre-Combustion Sorbent-Based  

NLE Websites -- All DOE Office Websites (Extended Search)

Pilot Testing of a Highly Effective Pre-Combustion Sorbent-Based Carbon Capture System Pilot Testing of a Highly Effective Pre-Combustion Sorbent-Based Carbon Capture System Project No.: DE-FE0013105 TDA is developing a new sorbent-based pre-combustion carbon capture technology for integrated gasification combined cycle (IGCC) power plants. The process, which was evaluated at bench-scale under a previous effort, uses an advanced physical adsorbent that selectively removes CO2 from coal derived synthesis gas (syngas) above the dew point of the gas. The sorbent consists of a mesoporous carbon grafted with surface functional groups that remove CO2 via an acid-base interaction. The reactor design will be optimized by using computational fluid dynamics and adsorption modeling to improve the pressure swing adsorption cycle sequence. The research will include: two 0.1 MWe tests with a fully-equipped prototype unit using actual synthesis gas to prove the viability of the new technology; long-term sorbent life evaluation in a bench-scale setup of 20,000 cycles; the fabrication of a pilot-scale testing unit that will contain eight sorbent reactors; and the design of a CO2 purification sub-system. The CO2 removal technology will significantly improve (3 to 4 percent) the IGCC process efficiency needed for economically viable production of power from coal.

312

Application of a Heat Integrated Post-combustion CO2 Capture System with Hitachi Advanced Solvent into Existing Coal-Fired Power Plant Award Number: DE-FE0007395 DOE Project Manager: José D. Figueroa  

NLE Websites -- All DOE Office Websites (Extended Search)

a Heat Integrated Post- a Heat Integrated Post- combustion CO 2 Capture System with Hitachi Advanced Solvent into Existing Coal-Fired Power Plant University of Kentucky Research Foundation Partnered with U.S. Department of Energy NETL Louisville Gas & Electric and Kentucky Utilities Electric Power Research Institute (with WorleyParsons) Hitachi Power Systems America Smith Management Group July 9, 2013 Goals and Objectives * Objectives 1) To demonstrate a heat-integrated post-combustion CO 2 capture system with an advanced solvent; 2) To collect information/data on material corrosion and identify appropriate materials of construction for a 550 MWe commercial-scale carbon capture plant.  To gather data on solvent degradation kinetics, water management, system dynamic control as well as other information during the long-term

313

Starting apparatus for internal combustion engines  

DOE Patents (OSTI)

This report is a patent description for a system to start an internal combustion engine. Remote starting and starting by hearing impaired persons are addressed. The system monitors the amount of current being drawn by the starter motor to determine when the engine is started. When the engine is started the system automatically deactivates the starter motor. Five figures are included.

Dyches, G.M.; Dudar, A.M.

1995-01-01T23:59:59.000Z

314

Coal combustion products (CCPs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

combustion products (CCPs) combustion products (CCPs) are solid materials produced when coal is burned to generate electricity. Since coal provides the largest segment of U.S. electricity generation (45 percent in 2010), finding a sustainable solution for CCPs is an important environmental challenge. When properly managed, CCPs offer society environmental and economic benefits without harm to public health and safety. Research supported by the U.S. Department of Energy's (DOE) Office of Fossil Energy (FE) has made an important contribution in this regard. Fossil Energy Research Benefits Coal Combustion Products Fossil Energy Research Benefits

315

Sandia Combustion Research: Technical review  

SciTech Connect

This report contains reports from research programs conducted at the Sandia Combustion Research Facility. Research is presented under the following topics: laser based diagnostics; combustion chemistry; reacting flow; combustion in engines and commercial burners; coal combustion; and industrial processing. Individual projects were processed separately for entry onto the DOE databases.

NONE

1995-07-01T23:59:59.000Z

316

Packed Bed Combustion: An Overview  

E-Print Network (OSTI)

;Packed Bed Combustion - University of Ottawa - CICS 2005 fuel fuel feed air products air fuel Retort) products Underfeed Combustion fuel feed air #12;Packed Bed Combustion - University of Ottawa - CICS 2005 required #12;Packed Bed Combustion - University of Ottawa - CICS 2005 Overfeed Bed fuel motion products air

Hallett, William L.H.

317

Real-time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Control and Diagnostics Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing its patented "Real-Time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor" technology. Disclosed is NETL's sensor system and process for monitoring and controlling the amplitude and/or frequencies of dynamic pressure oscillations in combustion systems during active combustion processes. The combustion control and diagnostics sensor (CCADS) is designed for gas turbine combustors that are operated near the fuel-lean flame extinction limit to minimize production of the atmospheric pollutant NOx. CCADS eliminates the problems of flashback,

318

Experience in the installation of a microprocessor system for controlling converter units of the Vyborg substation  

SciTech Connect

The experience in the installation of modern digital systems for controlling converter units at the Vyborg converter substation on the basis of advanced microprocessor devices is considered. It is shown that debugging of a control and protection system on mathematical and physical models does not guarantee optimum control of actual converter devices. Examples of advancing the control and protection system are described, the necessity for which has become obvious in tests of actual equipment. Comparison of oscillograms of processes before optimization of the control system and after its optimization and adjustment shows that the digital control system makes it possible to improve substantially the algorithms of control and protection in the short term and without changing the hardware component.

Gusakovskii, K. B.; Zmaznov, E. Yu.; Katantsev, S. V.; Mazurenko, A. K.; Mestergazi, V. A.; Prochan, G. G.; Funtikova, S. F. [High Voltage Direct Current Power Transmission Research Institute (NIIPT) (Russian Federation)

2006-01-15T23:59:59.000Z

319

Unattended system for monitoring skip movement at the Sellafield Facility in the United Kingdom  

SciTech Connect

An unattended system for monitoring spent-fuel movement in the storage area of a reprocessing facility has been developed and tested. The system uses radiation detectors to determine when fuel is being moved and a video system to record images of the container movement. In addition to the recorded image, other recorded data include the date and time of the movement and ''fingerprint'' information from the radiation detectors. The direction of motion either into or out of the storage pond is indicated on the video image and on the printed readout. This system was extensively tested at the Sellafield Facility in the United Kingdom. This paper gives the details of the system design and presents results of the field evaluation. 1 ref., 10 figs.

Bosler, G.E.; Klosterbuer, S.F.; Johnson, C.S.; Hale, W.R.; Marsh, R.D.; Dickinson, R.J.

1989-01-01T23:59:59.000Z

320

Definition: Combustion | Open Energy Information  

Open Energy Info (EERE)

Combustion Combustion Jump to: navigation, search Dictionary.png Combustion The process of burning; chemical oxidation accompanied by the generation of light and heat.[1][2] View on Wikipedia Wikipedia Definition "Burning" redirects here. For combustion without external ignition, see spontaneous combustion. For the vehicle engine, see internal combustion engine. For other uses, see Burning (disambiguation) and Combustion (disambiguation). Error creating thumbnail: Unable to create destination directory This article's introduction section may not adequately summarize its contents. To comply with Wikipedia's lead section guidelines, please consider modifying the lead to provide an accessible overview of the article's key points in such a way that it can stand on its own as a

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Needs assessment for remote systems technology at the Chornobyl Unit 4 shelter  

SciTech Connect

The accident at Chornobyl Unit 4 on April 26, 1986, resulted in a series of unprecedented scientific and technical challenges. The reactor building was damaged extensively. Following the accident, immediate action was needed to seal off the gaping crater created by the accident, which was a continuing source of airborne contamination. Under extreme conditions, a structure called the {open_quotes}Shelter{close_quotes} was built over the remains of the reactor building. The Shelter, which was quickly completed in November 1986, was meant to provide immediate but temporary containment. Now, 11 years later, there are significant concerns about its structural integrity and projected life expectancy. The United States and other participating G-7 countries are supporting nuclear safety upgrade efforts in Eastern Europe with a primary focus on placing the Chornobyl Nuclear Power Plant (ChNPP) Unit 4 Shelter in a stable and environmentally acceptable condition. Application of remote systems technologies will play an important part in achieving the goals of this program. The G-7 nations have agreed to support these efforts, including the identification and development of remote system technologies for fuel removal. However at this time they have taken a firm stance against funding actual fuel removal activities. The U.S. Department of Energy Office of Nuclear Energy, Science and Technology requested that a needs assessment be performed to evaluate the requirements for applying remote systems, including robotics, at the Shelter. This document is intended to be used to identify remote systems needs and requirements at the Shelter and to provide general information on the conditions in the Shelter that could impact the use of remote systems. This document is intended as a source of information to assist those who will be implementing the Shelter Implementation Plan tasks. The document provides background information and general guidance on the application of remote systems.

Carteret, B.A. [Pacific Northwest National Lab., Richland, WA (United States); Holliday, M.A.; Jones, E.D. [Lawrence Livermore National Lab., CA (United States)] [and others

1997-12-01T23:59:59.000Z

322

COMBUSTION-ASSISTED CO2 CAPTURE USING MECC MEMBRANES  

SciTech Connect

Mixed Electron and Carbonate ion Conductor (MECC) membranes have been proposed as a means to separate CO{sub 2} from power plant flue gas. Here a modified MECC CO{sub 2} capture process is analyzed that supplements retentate pressurization and permeate evacuation as a means to create a CO{sub 2} driving force with a process assisted by the catalytic combustion of syngas on the permeate side of the membrane. The combustion reactions consume transported oxygen, making it unavailable for the backwards transport reaction. With this change, the MECC capture system becomes exothermic, and steam for electricity production may be generated from the waste heat. Greater than 90% of the CO{sub 2} in the flue gas may be captured, and a compressed CO{sub 2} product stream is produced. A fossil-fueled power plant using this process would consume 14% more fuel per unit electricity produced than a power plant with no CO{sub 2} capture system, and has the potential to meet U.S. DOE's goal that deployment of a CO{sub 2} capture system at a fossil-fueled power plant should not increase the cost of electricity from the combined facility by more than 30%.

Brinkman, K.; Gray, J.

2012-03-30T23:59:59.000Z

323

Combustion-Assisted CO2 Capture Using MECC Membranes  

SciTech Connect

Mixed Electron and Carbonate ion Conductor (MECC) membranes have been proposed as a means to separate CO2 from power plant flue gas. Here a modified MECC CO2 capture process is analyzed that supplements retentate pressurization and permeate evacuation as a means to create a CO2 driving force with a process assisted by the catalytic combustion of syngas on the permeate side of the membrane. The combustion reactions consume transported oxygen, making it unavailable for the backwards transport reaction. With this change, the MECC capture system becomes exothermic, and steam for electricity production may be generated from the waste heat. Greater than 90% of the CO2 in the flue gas may be captured, and a compressed CO2 product stream is produced. A fossil-fueled power plant using this process would consume 14% more fuel per unit electricity produced than a power plant with no CO2 capture system, and has the potential to meet U.S. DOE s goal that deployment of a CO2 capture system at a fossil-fueled power plant should not increase the cost of electricity from the combined facility by more than 30%.

Sherman, Steven R [ORNL; Gray, Dr. Joshua R. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Brinkman, Dr. Kyle S. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Huang, Dr. Kevin [University of South Carolina, Columbia

2012-01-01T23:59:59.000Z

324

Application of Boiler Op for combustion optimization at PEPCO  

SciTech Connect

Title IV requires the reduction of NOx at all stations within the PEPCO system. To assist PEPCO plant personnel in achieving low heat rates while meeting NOx targets, Lehigh University`s Energy Research Center and PEPCO developed a new combustion optimization software package called Boiler Op. The Boiler Op code contains an expert system, neural networks and an optimization algorithm. The expert system guides the plant engineer through a series of parametric boiler tests, required for the development of a comprehensive boiler database. The data are then analyzed by the neural networks and optimization algorithm to provide results on the boiler control settings which result in the best possible heat rate at a target NOx level or produce minimum NOx. Boiler Op has been used at both Potomac River and Morgantown Stations to help PEPCO engineers optimize combustion. With the use of Boiler Op, Morgantown Station operates under low NOx restrictions and continues to achieve record heat rate values, similar to pre-retrofit conditions. Potomac River Station achieves the regulatory NOx limit through the use of Boiler Op recommended control settings and without NOx burners. Importantly, any software like Boiler Op cannot be used alone. Its application must be in concert with human intelligence to ensure unit safety, reliability and accurate data collection.

Maines, P.; Williams, S. [Potomac Electric Power Co., Upper Marlsboro, MD (United States); Levy, E. [Lehigh Univ., Bethlehem, PA (United States). Energy Research Center

1997-09-01T23:59:59.000Z

325

Spontaneous Human Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Spontaneous Human Combustion Spontaneous Human Combustion Name: S. Phillips. Age: N/A Location: N/A Country: N/A Date: N/A Question: One of our 8th grade students has tried to find information in our library about spontaneous human combustion, but to no avail. Could you tell us where we might locate a simple reference, or provide some in information about this subject for him. Replies: Sorry, but this is definitely "fringe science"...try asking in bookstores. I seem to recall one of those "believe it or not" type of TV shows did an episode on spontaneous human combustion a few years ago in which they reported on some British scientists who investigated this purported phenomenon. Remember that people (back in the Dark Ages, and before) used to believe in "spontaneous generation" of certain plants and animals because they were not aware of the reproduction methods used by those plants and animals.

326

Advanced diesel combustion  

Science Journals Connector (OSTI)

Future emission norms will further reduce the vehicle emissions of diesel engines. To meet the goal of achieving these stringent limits while maintaining attractive attributes of marketability, the combustion ...

Dirk Adolph; Hartwig Busch; Stefan Pischinger; Andreas Kolbeck

2008-01-01T23:59:59.000Z

327

Advanced Combustion Technologies  

Energy.gov (U.S. Department of Energy (DOE))

The workhorse of America's electric power sector is the coal-fired power plant. Today, coal combustion plants account for more than half of the Nation's electric power generation. Largely because...

328

Catalytic Combustion Processes  

Science Journals Connector (OSTI)

This work presents experimental data on the effect of catalytic additives on the combustion characteristics of ammonium nitrate and perchlorate and the explosives of different classes. Burning rates are determ...

A. P. Glaskova

1991-01-01T23:59:59.000Z

329

Theoretical studies of combustion dynamics  

SciTech Connect

The basic objectives of this research program are to develop and apply theoretical techniques to fundamental dynamical processes of importance in gas-phase combustion. There are two major areas currently supported by this grant. One is reactive scattering of diatom-diatom systems, and the other is the dynamics of complex formation and decay based on L{sup 2} methods. In all of these studies, the authors focus on systems that are of interest experimentally, and for which potential energy surfaces based, at least in part, on ab initio calculations are available.

Bowman, J.M. [Emory Univ., Atlanta, GA (United States)

1993-12-01T23:59:59.000Z

330

Nitrogen Oxides, Sulphur Trioxide and Mercury Emissions during Oxy-Fuel Fluidized Bed Combustion of Victorian Brown Coal  

Science Journals Connector (OSTI)

This study investigates, for the first time, the NOX, N2O, SO3 and Hg emissions from combustion of a Victorian brown coal in a 10 kWth fluidized bed unit under oxy-fuel combustion conditions. Compared to air combustion, lower NOX emissions and higher N2O ...

Bithi Roy; Luguang Chen; Sankar Bhattacharya

2014-11-17T23:59:59.000Z

331

Influence of Boundary Conditions on Sub-Millimeter Combustion Shaurya Prakash,*,, Roald Akberov, Damena Agonafer, Adrian D. Armijo, and  

E-Print Network (OSTI)

alternative due to even higher energy densities of combusting hydrocarbon fuels over that of direct fuel cells combustion-based systems very attractive heat sources.11,12 In addition, development of microscale combustionInfluence of Boundary Conditions on Sub-Millimeter Combustion Shaurya Prakash,*,,§ Roald Akberov

332

Advanced Combustion Technology to Enable High Efficiency Clean...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Combustion Technology to Enable High Efficiency Clean Combustion Advanced Combustion Technology to Enable High Efficiency Clean Combustion Summary of advanced combustion research...

333

New Developments in Closed Loop Combustion Control Using Flue Gas Analysis  

E-Print Network (OSTI)

New developments in closed loop combustion control are causing radical changes in the way combustion control systems are implemented. The recent availability of in line flue gas analyzers and microprocessor technology are teaming up to produce...

Nelson, R. L.

1981-01-01T23:59:59.000Z

334

AndreiG.Fedorov Title: George W. Woodruff Professorship in Heat Transfer, Combustion and  

E-Print Network (OSTI)

AndreiG.Fedorov Title: George W. Woodruff Professorship in Heat Transfer, Combustion and Energy Research Areas of Interest Heat Transfer, combustion, and energy systems Bioengineering, lab ionization and imaging for bioanalytical mass spectrometry Thermal radiation heat transfer Thermal

Garmestani, Hamid

335

A Detailed Multi-Zone Thermodynamic Simulation For Direct-Injection Diesel Engine Combustion  

E-Print Network (OSTI)

A detailed multi-zone thermodynamic simulation has been developed for the direct-injection (DI) diesel engine combustion process. For the purpose of predicting heterogeneous type combustion systems, the model explores the formation of pre...

Xue, Xingyu 1985-

2012-11-15T23:59:59.000Z

336

Single-cylinder engine as a tool for developing new combustion processes  

Science Journals Connector (OSTI)

In the race to perfect the combustion process of tomorrow engine developers are focusing on ... ignition and diesel systems with stratified spark-ignition combustion processes along with a variety of technologies...

Frank Menzel; Thomas Seidel; Wulf Schmidt; Julius Pape; Lutz Stiegler

2006-03-01T23:59:59.000Z

337

Sandia Combustion Research Program  

SciTech Connect

During the late 1970s, in response to a national energy crisis, Sandia proposed to the US Department of Energy (DOE) a new, ambitious program in combustion research. Shortly thereafter, the Combustion Research Facility (CRF) was established at Sandia's Livermore location. Designated a ''user facility,'' the charter of the CRF was to develop and maintain special-purpose resources to support a nationwide initiative-involving US inventories, industry, and national laboratories--to improve our understanding and control of combustion. This report includes descriptions several research projects which have been simulated by working groups and involve the on-site participation of industry scientists. DOE's Industry Technology Fellowship program, supported through the Office of Energy Research, has been instrumental in the success of some of these joint efforts. The remainder of this report presents results of calendar year 1988, separated thematically into eleven categories. Referred journal articles appearing in print during 1988 and selected other publications are included at the end of Section 11. Our traditional'' research activities--combustion chemistry, reacting flows, diagnostics, engine and coal combustion--have been supplemented by a new effort aimed at understanding combustion-related issues in the management of toxic and hazardous materials.

Johnston, S.C.; Palmer, R.E.; Montana, C.A. (eds.)

1988-01-01T23:59:59.000Z

338

Burnup verification at Arkansas Nuclear One-unit 1 using the Fork measurement system  

SciTech Connect

The Fork measurement system, designed at Los Alamos National Laboratory for the International Atomic Energy Agency safeguards program, has been used for several years to examine spent fuel assemblies at nuclear reactors around the world. The objective of the test program described here is to demonstrate the ability of the Fork system to verify the records for assembly burnup at U.S. nuclear utilities. The measurements described here were performed at Arkansas Nuclear One, operated by Energy Operations, Inc. The Fork system was used to examine 34 assemblies in the storage pool of Arkansas Nuclear One-Unit 1. The correlation between the neutron measurements and the reactor records produced an average random deviation in burnup of 3.0% from the calibration, which translates into an average variation of 2.2% in the reactor records for burnup. The system proved to be compatible with utility operations.

Ewing, R.I. [Sandia National Lab., Albuquerque, NM (United States); Bosler, G.E. [Los Alamos National Lab., Los Alamos, NM (United States); Priore, J. [Entergy Oerations, Inc., Russellville, AR (United States)

1995-12-01T23:59:59.000Z

339

Development of a Carbon Management Geographic Information System (GIS) for the United States  

SciTech Connect

In this project a Carbon Management Geographical Information System (GIS) for the US was developed. The GIS stored, integrated, and manipulated information relating to the components of carbon management systems. Additionally, the GIS was used to interpret and analyze the effect of developing these systems. This report documents the key deliverables from the project: (1) Carbon Management Geographical Information System (GIS) Documentation; (2) Stationary CO{sub 2} Source Database; (3) Regulatory Data for CCS in United States; (4) CO{sub 2} Capture Cost Estimation; (5) CO{sub 2} Storage Capacity Tools; (6) CO{sub 2} Injection Cost Modeling; (7) CO{sub 2} Pipeline Transport Cost Estimation; (8) CO{sub 2} Source-Sink Matching Algorithm; and (9) CO{sub 2} Pipeline Transport and Cost Model.

Howard Herzog; Holly Javedan

2009-12-31T23:59:59.000Z

340

Performance and emission characteristics of natural gas combined cycle power generation system with steam injection and oxyfuel combustion.  

E-Print Network (OSTI)

??Natural gas combined cycle power generation systems are gaining popularity due to their high power generation efficiency and reduced emission. In the present work, combined (more)

Varia, Nitin

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Coal combustion science. Quarterly progress report, April 1993--June 1993  

SciTech Connect

This document is a quarterly status report of the Coal Combustion Science Project that is being conducted at the Combustion Research Facility, Sandia National Laboratories. The information reported is for Apr-Jun 1993. The objective of this work is to support the Office of Fossil Energy in executing research on coal combustion science. This project consists of basic research on coal combustion that supports both the PETC Direct Utilization Advanced Research and Technology Development Program, and the International Energy Agency Coal Combustion Science Project. The objective of the kinetics and mechanisms of pulverized coal char combustion task is to characterize the combustion behavior of selected US coals under conditions relevant to industrial pulverized coal-fired furnaces. Work is being done in four areas: kinetics of heterogeneous fuel particle populations; char combustion kinetics at high carbon conversion; the role of particle structure and the char formation process in combustion and; unification of the Sandia char combustion data base. This data base on the high temperature reactivities of chars from strategic US coals will permit identification of important fuel-specific trends and development of predictive capabilities for advanced coal combustion systems. The objective of the fate of inorganic material during coal combustion task is the establish a quantitative understanding of the mechanisms and rates of transformation, fragmentation, and deposition of inorganic material during coal combustion as a function of coal type, particle size and temperature, the initial forms and distribution of inorganic species in the unreacted coal, and the local gas temperature and composition. In addition, optical diagnostic capabilities are being developed for in situ, real-time detection of inorganic vapor species and surface species during ash deposition. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

Hardesty, D.R. [ed.

1994-05-01T23:59:59.000Z

342

Chemical Looping Combustion Kinetics  

SciTech Connect

One of the most promising methods of capturing CO{sub 2} emitted by coal-fired power plants for subsequent sequestration is chemical looping combustion (CLC). A powdered metal oxide such as NiO transfers oxygen directly to a fuel in a fuel reactor at high temperatures with no air present. Heat, water, and CO{sub 2} are released, and after H{sub 2}O condensation the CO{sub 2} (undiluted by N{sub 2}) is ready for sequestration, whereas the nickel metal is ready for reoxidation in the air reactor. In principle, these processes can be repeated endlessly with the original nickel metal/nickel oxide participating in a loop that admits fuel and rejects ash, heat, and water. Our project accumulated kinetic rate data at high temperatures and elevated pressures for the metal oxide reduction step and for the metal reoxidation step. These data will be used in computational modeling of CLC on the laboratory scale and presumably later on the plant scale. The oxygen carrier on which the research at Utah is focused is CuO/Cu{sub 2}O rather than nickel oxide because the copper system lends itself to use with solid fuels in an alternative to CLC called 'chemical looping with oxygen uncoupling' (CLOU).

Edward Eyring; Gabor Konya

2009-03-31T23:59:59.000Z

343

A theoretical study of a special detonation regime of operation of a pulse detonation device with a variable cross section detonation combustion chamber and a valveless supply system  

Science Journals Connector (OSTI)

The results of a theoretical study of the special detonation regime that arises in a pulse detonation device with a variable cross section combustion ... location of the diaphragm. Since the pulse detonation devi...

L. G. Gvozdeva; D. I. Baklanov; I. N. Ryzhkina

2009-06-01T23:59:59.000Z

344

Understanding Carbon Sequestration Options in the United States: Capabilities of a Carbon Management Geographic Information System  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Sequestration Options in the United States: Carbon Sequestration Options in the United States: Capabilities of a Carbon Management Geographic Information System R. Dahowski (bob.dahowski@battelle.org; 509-372-4574) J. Dooley (dooleyj@battelle.org; 202-646-7810) D. Brown (daryl.brown@pnl.gov; 509-372-4366) Battelle/Pacific Northwest National Laboratory P.O. Box 999 Richland, WA 99352 A. Mizoguchi (akiyoshi.mizoguchi@jp.mitsubishicorp.com; 81-3-3210-7211) M. Shiozaki (mai.shiozaki@jp.mitsubishicorp.com; 81-3-3210-9543) 6-3 Marunouchi 2-Chome Chiyoda-ku Mitsubishi Corporation Tokyo 100-8086 Japan Introduction Addressing the threat posed by climate change represents one of the most pressing challenges facing humanity. It is also a challenge that will ultimately require profound changes in the way

345

STATEMENT OF CONSIDERATIONS REQUEST BY UNITED SOLAR SYSTEMS CORP. FOR AN ADVANCE WAIVER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CORP. FOR AN ADVANCE WAIVER CORP. FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE PRIME CONTRACT NO. DE-AC36-83CH10093; SUBCONTRACT NREL-ZAK-8-17619- 09; W(A)-99-014; CH-1007 The Petitioner, United Solar Systems Corp. (hereinafter "United Solar"), has requested a waiver of domestic and foreign patent rights for all subject inventions arising from its participation under the above referenced subcontract entitled "High-Efficiency Triple-Junction Amorphous Silicon Alloy Photovoltaic Technology". This subcontract is directed to research, development, and manufacturing of amorphous thin film solar cell products. In Particular, this subcontract is directed to the research and development of high performance two-terminal multi gap, multi junction amorphous silicon alloy modules, and to

346

OXYGEN ENHANCED COMBUSTION FOR NOx CONTROL  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for the Program through the thirteenth quarter, April-June 2003, in the following task areas: Task 1--Oxygen Enhanced Combustion, Task 3--Economic Evaluation and Task 4--Program Management. The program is proceeding in accordance with project objectives. REI's model was modified to evaluate mixing issues in the upper furnace of a staged unit. Analysis of the results, and their potential application to this unit is ongoing. Economic evaluation continues to confirm the advantage of oxygen-enhanced combustion. A contract for a commercial demonstration has been signed with the Northeast Generation Services Company to supply oxygen and license the oxygen enhanced low NOx combustor technology for use at the 147-megawatt coal fired Mt. Tom Station in Holyoke, MA. Commercial proposals have been submitted. Economic analysis of a beta site test performance was conducted.

David R. Thompson; Lawrence E. Bool; Jack C. Chen

2003-08-01T23:59:59.000Z

347

Chemical Kinetic Models for HCCI and Diesel Combustion  

SciTech Connect

Hydrocarbon fuels for advanced combustion engines consist of complex mixtures of hundreds or even thousands of different components. These components can be grouped into a number of chemically distinct classes, consisting of n-paraffins, branched paraffins, cyclic paraffins, olefins, oxygenates, and aromatics. Biodiesel contains its own unique chemical class called methyl esters. The fractional amounts of these chemical classes are quite different in gasoline, diesel fuel, oil-sand derived fuels and bio-derived fuels, which contributes to the very different combustion characteristics of each of these types of combustion systems. The objectives of this project are: (1) Develop detailed chemical kinetic models for fuel components used in surrogate fuels for diesel and HCCI engines; (2) Develop surrogate fuel models to represent real fuels and model low temperature combustion strategies in HCCI and diesel engines that lead to low emissions and high efficiency; and (3) Characterize the role of fuel composition on low temperature combustion modes of advanced combustion engines.

Pitz, W J; Westbook, C K; Mehl, M

2008-10-30T23:59:59.000Z

348

Fast multi-core co-simulation of Cyber-Physical Systems : Application to internal combustion engines  

E-Print Network (OSTI)

on renewable energy and energy efficiency. This challenge affects the whole energy cycle: production, transport. Automobiles are typical examples of Cyber-Physical Systems, where chem- ical energy (gasoline, diesel, ethanol. Currently, building high fidelity system-level models of Cyber-Physical Sys- tems in general and automotive

Boyer, Edmond

349

Combustion Model for Engine Concept Development | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Combustion Model for Engine Concept Development Presentation shows how 1-cylinder testing, 3D combustion CFD and 1D gas exchange with an advanced combustion model are used...

350

APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS  

NLE Websites -- All DOE Office Websites (Extended Search)

CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS PRE-COMBUSTION SORBENTS PRE-COMBUSTION MEMBRANES POST-COMBUSTION SOLVENTS POST-COMBUSTION SORBENTS POST-COMBUSTION MEMBRANES OXY-COMBUSTION OXYGEN PRODUCTION CHEMICAL LOOPING ADVANCED COMPRESSION R&D COLLABORATIONS B-1 APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS NATIONAL ENERGY TECHNOLOGY LABORATORY PRE-COMBUSTION SOLVENTS B-6 SRI International - CO 2 Capture Using AC-ABC Processt B-7 PRE-COMBUSTION SORBENTS B-14 TDA Research - CO 2 Capture for Low-Rank Coal IGCC Systems B-15 URS Group - Sorbent Development for WGS B-18 Air Products and Chemicals - Advanced Acid Gas Separation B-24 Ohio State University-Department of Chemical Engineering - Calcium Looping for Hydrogen Production B-33

351

Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis  

E-Print Network (OSTI)

agreement with published works and resulted in correlations for fuel properties that were not discussed in literature. In chapter three, the design, construction, and validation of an engine cylinder pressure recording system are covered. In particular...

Mangus, Michael D.

2012-05-31T23:59:59.000Z

352

Microsoft Word - 41521_PCI_RCL Combustion_Factsheet_Rev01-00-00-03.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

RCL RCL TM System Study for Natural Gas and Coal-Derived Syngas (Precision Combustion, Inc.) 1 FACT SHEET (DRAFT 3/17/03) I. PROJECT PARTICIPANTS 1. Prime Participant: Precision Combustion, Inc. (PCI) 2. Other Participants: General Electric Power Systems, Pratt and Whitney Power Systems, Siemens Westinghouse Power Corporation, American Electric Power, Calpine. , II. PROJECT DESCRIPTION A. Objective(s): The objective of this project is to conduct a system study evaluating the potential impact on power generation turbines of a novel catalytic combustion technology ("Rich Catalytic/Lean burn" or "RCL(tm)" combustion). The study explores the potential for this improved combustion process for elimination of SCR aftertreatment, improved efficiency,

353

Proceedings of the ASME Heat Transfer Division. Volume 4: Natural convection within a horizontal circular cylinder heated from below and cooled from above; Numerical methods for coupled fluid-thermal-structural interaction; Thermal analysis in waste processing and disposal; Heat transfer in fire and combustion systems; HTD-Volume 335  

SciTech Connect

The first two sections as listed in the title contain 7 papers. The third section on thermal analysis contains 18 papers arranged into the following topical areas: Thermal treatment and municipal wastes; Thermal hydraulics in hazardous and nuclear waste processing and disposal; and Waste processing. Heat transfer in fire and combustion systems contains 17 papers arranged into the following topical sections: Soot/radiation; Combustion systems; Multiphase combustion; and Flames and fires. Most papers have been processed separately for inclusion on the data base.

Pepper, D.W. [ed.] [Univ. of Nevada, Las Vegas, NV (United States); Douglass, R.W. [ed.] [Idaho National Engineering Lab., Idaho Falls, ID (United States); Heinrich, J.C. [ed.] [Univ. of Arizona, Tucson, AZ (United States)] [and others

1996-12-31T23:59:59.000Z

354

Synthetic and Jet Fuels Pyrolysis for Cooling and Combustion Applications.  

E-Print Network (OSTI)

phenomenon (heat and mass transfers, pyrolysis, combustion) in a cooling channel surrounding a SCRamjet regeneratively cooled SCRamjet is provided to get a large vision of the fuel nature impact on the system of supersonic combustion ramjet (SCRamjet) [1]. For such high velocity, the total temperature of external air

Boyer, Edmond

355

Understanding the thermodynamic inefficiencies in combustion processes  

Science Journals Connector (OSTI)

Abstract The thermodynamic inefficiencies associated with any energy conversion process are expressed by the exergy destruction and the exergy losses associated with the process. Combustion processes exhibit very high thermodynamic inefficiencies caused by chemical reaction, heat transfer, friction, and mixing. In this paper, we discuss how to estimate the thermodynamic inefficiencies resulting from each one of these sources. The thermodynamic evaluation can be conducted with the aid of either a conventional exergetic analysis or an advanced one. The latter allows estimation of the potential for improvement of the process being considered and demonstrates the interactions among the components of the system in which combustion takes place. The paper discusses how advanced exergy-based evaluations can be used to reduce the thermodynamic inefficiencies, costs, and environmental impacts associated with energy conversion systems including combustion processes.

George Tsatsaronis; Tatiana Morosuk; Daniela Koch; Max Sorgenfrei

2013-01-01T23:59:59.000Z

356

Combustible structural composites and methods of forming combustible structural composites  

DOE Patents (OSTI)

Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.

Daniels, Michael A.; Heaps, Ronald J.; Steffler, Eric D.; Swank, W. David

2013-04-02T23:59:59.000Z

357

Combustible structural composites and methods of forming combustible structural composites  

DOE Patents (OSTI)

Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.

Daniels, Michael A. (Idaho Falls, ID); Heaps, Ronald J. (Idaho Falls, ID); Steffler, Eric D (Idaho Falls, ID); Swank, William D. (Idaho Falls, ID)

2011-08-30T23:59:59.000Z

358

Combustion Processes in the Zr-Co-H2 System and Synthesis of Hydrides of Intermetallic Compounds  

Science Journals Connector (OSTI)

The researches on Zr2Co, ZrCo, ZrCo2 synthesis and hydriding in a self-propagating hightemperature synthesis SHS mode are carried out. In IMC hydrogen systems low temperature (350500C) and high temperature ...

H. G. Hakobyan; S. K. Dolukhanyan

2002-01-01T23:59:59.000Z

359

Temporal and spatial variability of wind resources in the United States as derived from the Climate Forecast System Reanalysis  

Science Journals Connector (OSTI)

This study examines the spatial and temporal variability of wind speed at 80 m above ground (the average hub height of most modern wind turbines) in the contiguous United States using Climate Forecast System Reanalysis (CFSR) data from 1979 to ...

Lejiang Yu; Shiyuan Zhong; Xindi Bian; Warren E. Heilman

360

Water chemistry of the system for cooling the electrical generator stator of the power unit at a thermal power station  

Science Journals Connector (OSTI)

Results from studies of the water chemistry used in the system for cooling the stator windings of alternators used in supercritical-pressure power units are presented, and a solution is ... suggested using which ...

B. M. Larin; A. B. Larin; A. N. Korotkov; M. Yu. Oparin

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Nitrogen enriched combustion of a natural gas internal combustion engine to reduce NO.sub.x emissions  

DOE Patents (OSTI)

A method and system for reducing nitrous oxide emissions from an internal combustion engine. An input gas stream of natural gas includes a nitrogen gas enrichment which reduces nitrous oxide emissions. In addition ignition timing for gas combustion is advanced to improve FCE while maintaining lower nitrous oxide emissions.

Biruduganti, Munidhar S. (Naperville, IL); Gupta, Sreenath Borra (Naperville, IL); Sekar, R. Raj (Naperville, IL); McConnell, Steven S. (Shorewood, IL)

2008-11-25T23:59:59.000Z

362

Combustion Safety Overview  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

March 1-2, 2012 March 1-2, 2012 Building America Stakeholders Meeting Austin, Texas Combustion Safety in the Codes Larry Brand Gas Technology Institute Acknowledgement to Paul Cabot - American Gas Association 2 | Building America Program www.buildingamerica.gov Combustion Safety in the Codes Widely adopted fuel gas codes: * National Fuel Gas Code - ANSI Z223.1/NFPA 54, published by AGA and NFPA (NFGC) * International Fuel Gas Code - published by the International Code Council (IFGC) * Uniform Plumbing Code published by IAPMO (UPC) Safety codes become requirements when adopted by the Authority Having Jurisdiction (governments or fire safety authorities) 3 | Building America Program www.buildingamerica.gov Combustion Safety in the Codes Formal Relationships Between these codes: - The IFGC extracts many safety

363

A MODEL FOR POROUS-MEDIUM COMBUSTION  

Science Journals Connector (OSTI)

......these applied in coal combustion appears in...understanding of the chemistry of combustion...GLASSMAN, Combustion (Academic Press...ESSENHIGH, In Chemistry of Coal Utilization...POROUS-MEDIUM COMBUSTION 177 8. D. A......

J. NORBURY; A. M. STUART

1989-02-01T23:59:59.000Z

364

Compressor and Turbine Models of Brayton Units for Space Nuclear Power Systems  

SciTech Connect

Closed Brayton Cycles with centrifugal flow, single-shaft turbo-machines are being considered, with gas cooled nuclear reactors, to provide 10's to 100's of electrical power to support future space exploration missions and Lunar and Mars outposts. Such power system analysis is typically based on the cycle thermodynamics, for given operating pressures and temperatures and assumed polytropic efficiencies of the compressor and turbine of the Brayton energy conversion units. Thus the analysis results not suitable for modeling operation transients such as startup and changes in the electric load. To simulate these transients, accurate models of the turbine and compressor in the Brayton rotating unit, which calculate the changes in the compressor and turbine efficiencies with system operation are needed. This paper presents flow models that account for the design and dimensions of the compressor impeller and diffuser, and the turbine stator and rotor blades. These models calculate the various enthalpy losses and the polytropic efficiencies along with the pressure ratios of the turbine and compressor. The predictions of these models compare well with reported performance data of actual hardware. In addition, the results of a parametric analysis to map the operations of the compressor and turbine, as functions of the rotating shaft speed and inlet Mach number of the gas working fluid, are presented and discussed. The analysis used a binary mixture of He-Xe with a molecular weight of 40 g/mole as the working fluid.

Gallo, Bruno M.; El-Genk, Mohamed S.; Tournier, Jean-Michel [Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, NM, 87131 (United States); Chemical and Nuclear Engineering Department, University of New Mexico, Albuquerque, NM, 87131 (United States)

2007-01-30T23:59:59.000Z

365

Studies in combustion dynamics  

SciTech Connect

The goal of this program is to develop a fundamental understanding and a quantitative predictive capability in combustion modeling. A large part of the understanding of the chemistry of combustion processes comes from {open_quotes}chemical kinetic modeling.{close_quotes} However, successful modeling is not an isolated activity. It necessarily involves the integration of methods and results from several diverse disciplines and activities including theoretical chemistry, elementary reaction kinetics, fluid mechanics and computational science. Recently the authors have developed and utilized new tools for parallel processing to implement the first numerical model of a turbulent diffusion flame including a {open_quotes}full{close_quotes} chemical mechanism.

Koszykowski, M.L. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

366

Nanoparticle Emissions from Internal Combustion Engines | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Nanoparticle Emissions from Internal Combustion Engines Nanoparticle Emissions from Internal Combustion Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference...

367

Improving alternative fuel utilization: detailed kinetic combustion...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

alternative fuel utilization: detailed kinetic combustion modeling & experimental testing Improving alternative fuel utilization: detailed kinetic combustion modeling &...

368

Thermal and Chemical Identification of Materials Prior to Combustion Ruby N. Ghosh  

E-Print Network (OSTI)

on the gases produced by combustion: CO, CO2 and total hydrocarbons; as well as oxygen, an essential reactant. An infrared furnace is used to rapidly (few seconds) heat (up to 800 °C) a small sample of combustible% of the heat within 5 seconds [3] . The system uses ambient air to fuel its combustion, with the draw rate

Ghosh, Ruby N.

369

A HIGH-ORDER-ACCURATE GPU-BASED RADIATIVE TRANSFER EQUATION SOLVER FOR COMBUSTION  

E-Print Network (OSTI)

is a dominant mode of heat transfer in combustion systems such as rocket engines, scramjets, and industrial development to result in a robust and fail-safe design. Hydrocarbon combustion results in exhaust gases whichA HIGH-ORDER-ACCURATE GPU-BASED RADIATIVE TRANSFER EQUATION SOLVER FOR COMBUSTION AND PROPULSION

Pilon, Laurent

370

Apparatus for photocatalytic destruction of internal combustion engine emissions during cold start  

DOE Patents (OSTI)

A method and apparatus for the destruction of emissions from an internal combustion engine wherein a substrate coated with TiO.sub.2 is exposed to a light source in the exhaust system of an internal combustion engine thereby catalyzing oxidation/reduction reactions between gaseous hydrocarbons, carbon monoxide, nitrogen oxides and oxygen in the exhaust of the internal combustion engine.

Janata, Jiri (Richland, WA); McVay, Gary L. (Richland, WA); Peden, Charles H. (West Richland, WA); Exarhos, Gregory J. (Richland, WA)

1998-01-01T23:59:59.000Z

371

Development of second-generation pressurized fluidized bed combustion process  

SciTech Connect

Under the sponsorship of the United States Department of Energy, Foster Wheeler Development Corporation, and its team members, Westinghouse, Gilbert/Commonwealth, and the Institute of Gas Technology are developing second-generation pressurized fluidized bed combustion technology capable of achieving net plant efficiency in excess of 45 percent based on the higher heating value of the coal. A three-phase program entails design and costing of a 500 MWe power plant and identification of developments needed to commercialize this technology (Phase 1), testing of individual components (Phase 2), and finally testing these components in an integrated mode (Phase 3). This paper briefly describes the results of the first two phases as well as the progress on the third phase. Since other projects which use the same technology are in construction or in negotiation stages -- namely, the Power System Development Facility and the Four Rivers Energy Modernization Projects -- brief descriptions of these are also included.

Wolowodiuk, W.; Robertson, A. [Foster Wheeler Development Corp., Livingston, NJ (United States); Bonk, D. [USDOE Morgantown Energy Technology Center, WV (United States)

1994-10-01T23:59:59.000Z

372

Chemical-looping combustion of solid fuels in a 10kW reactor system using natural minerals as oxygen carrier  

Science Journals Connector (OSTI)

Abstract Chemical-looping combustion (CLC) is an unmixed combustion concept where fuel and combustion air are kept separate by means of an oxygen carrier, and the CO2 capture is inherently achieved. This work presents findings from a continuously operated 10kW pilot for solid fuels. Using petcoke as fuel, the following oxygen carriers are compared: (a) ilmenite, (b) ilmenite + lime, (c) manganese ore, and (d) manganese ore + lime. Compared to ilmenite, the use of manganese ore as oxygen carrier greatly enhanced the rate of gasification. By adding lime particles to the Mn ore, performance improved further. The addition of lime to ilmenite had a small beneficial effect on gas conversion and char gasification rate.

Carl Linderholm; Anders Lyngfelt; Cristina Dueso

2013-01-01T23:59:59.000Z

373

Reversed flow fluidized-bed combustion apparatus  

DOE Patents (OSTI)

The present invention is directed to a fluidized-bed combustion apparatus provided with a U-shaped combustion zone. A cyclone is disposed in the combustion zone for recycling solid particulate material. The combustion zone configuration and the recycling feature provide relatively long residence times and low freeboard heights to maximize combustion of combustible material, reduce nitrogen oxides, and enhance sulfur oxide reduction.

Shang, Jer-Yu (Fairfax, VA); Mei, Joseph S. (Morgantown, WV); Wilson, John S. (Morgantown, WV)

1984-01-01T23:59:59.000Z

374

Four Lectures on Turbulent Combustion  

E-Print Network (OSTI)

, combustion in a Diesel engine or in furnaces essentially taakes place under non-premixed conditions. In the Diesel engine a liquid fuel spray is injected into hot compressed air, the fuel evaporates and mixes combustion are in general subdivided into two classes: premixed or non-premixed combustion. For example

Peters, Norbert

375

Kinetic data base for combustion modeling  

SciTech Connect

The aim of this work is to develop a set of evaluated rate constants for use in the simulation of hydrocarbon combustion. The approach has been to begin with the small molecules and then introduce larger species with the various structural elements that can be found in all hydrocarbon fuels and decomposition products. Currently, the data base contains most of the species present in combustion systems with up to four carbon atoms. Thus, practically all the structural grouping found in aliphatic compounds have now been captured. The direction of future work is the addition of aromatic compounds to the data base.

Tsang, W.; Herron, J.T. [National Institute of Standards and Technology, Gaithersburg, MD (United States)

1993-12-01T23:59:59.000Z

376

1 - Combustion processes of textile fibres  

Science Journals Connector (OSTI)

Abstract: This chapter reviews the current knowledge of the processes involved in the combustion behaviour of textiles and approaches to their flame retardant protection. Synthetic fibre-forming polymers, both thermoplastic and high temperature resistant, as well as naturally occurring fibre types are discussed. The combustion process is described with reference to the thermal stability, degradation and oxidative degradation of various individual polymer types. The significance of textile structure is considered with respect to the textile flammability. The mechanisms of the different flame retardant systems applied to various textiles are discussed as well as the more recent application of nano-composites. Finally, a prediction of potential future developments is presented.

D. Price; A.R. Horrocks

2013-01-01T23:59:59.000Z

377

Flashback Detection Sensor for Hydrogen Augmented Natural Gas Combustion  

SciTech Connect

The use of hydrogen augmented fuel is being investigated by various researchers as a method to extend the lean operating limit, and potentially reduce thermal NOx formation in natural gas fired lean premixed (LPM) combustion systems. The resulting increase in flame speed during hydrogen augmentation, however, increases the propensity for flashback in LPM systems. Real-time in-situ monitoring of flashback is important for the development of control strategies for use of hydrogen augmented fuel in state-of-the-art combustion systems, and for the development of advanced hydrogen combustion systems. The National Energy Technology Laboratory (NETL) and Woodward Industrial Controls are developing a combustion control and diagnostics sensor (CCADS), which has already been demonstrated as a useful sensor for in-situ monitoring of natural gas combustion, including detection of important combustion events such as flashback and lean blowoff. Since CCADS is a flame ionization sensor technique, the low ion concentration produced in pure hydrogen combustion raises concerns of whether CCADS can be used to monitor flashback in hydrogen augmented combustion. This paper discusses CCADS tests conducted at 0.2-0.6 MPa (2-6 atm), demonstrating flashback detection with fuel compositions up to 80% hydrogen (by volume) mixed with natural gas. NETLs Simulation Validation (SimVal) combustor offers full optical access to pressurized combustion during these tests. The CCADS data and high-speed video show the reaction zone moves upstream into the nozzle as the hydrogen fuel concentration increases, as is expected with the increased flame speed of the mixture. The CCADS data and video also demonstrate the opportunity for using CCADS to provide the necessary in-situ monitor to control flashback and lean blowoff in hydrogen augmented combustion applications.

Thornton, J.D.; Chorpening, B.T.; Sidwell, T.; Strakey, P.A.; Huckaby, E.D.; Benson, K.J. (Woodward)

2007-05-01T23:59:59.000Z

378

Koch`s experience with deep in situ combustion in Williston basin  

SciTech Connect

Koch Exploration Company has been active with the combustion process in the Williston basin of North and South Dakota since 1979. Koch has three ongoing combustion projects in the basin. The Medicine Pole Hills Unit (MPHU) and the Capa Madison Unit (CMU) are located in the North Dakota, while the Buffalo Unit is situated in South Dakota. Because of low primary recovery from these deep carbonate reservoirs, studies were conducted to determine how the large volume of remaining oil could be recovered, and decisions were made to initiate an in situ combustion by air injection, pressure maintenance project in these reservoirs. The principal objective of this talk is to review the past performance of these combustion projects and discuss some of the operating problems we encountered. The other objectives are to outline the economics of the projects and to speculate on the future of in situ combustion technology as Koch sees it.

Miller, R.J. [Koch Exploration Co., Wichita, KS (United States)

1995-02-01T23:59:59.000Z

379

Hydrothermal combustion of biofuels in supercritical water  

SciTech Connect

Supercritical water oxidation (SCWO) has long been recognized as a safe, clean and energy efficient method for destroying a wide range of organic materials and hazardous wastes. As SCWO systems operate at elevated pressure, all effluent streams are fully contained allowing efficient recovery of thermal energy using compact heat exchangers. Water vapor produced by the combustion efficiency, especially for fuels with increasing moisture content such as biomass. This paper compares the performance of a simple Rankine vapor power cycle which derives it`s heat input from (1) a hydrothermal combustion system, and (2) a conventionally-fired steam boiler. The study is based on a hypothetical cellulose-based organic fuel with a higher heating value of 7,000 BT/1bm (dry). For a constant organic feedrate of 100 tons/day (bone dry) mixed in 20:80 fuel/water ratio with water, the calculated net electric power output from the 31.93%. Whereas, for an organic feedrate of 100 tons/day (bone dry) with zero of 5,382 kW, at an overall thermal efficiency of 31.48%. The hydrothermal combustion power cycle is unaffected by free moisture in the fuel, and thereby uniquely well-suited for use in biomass power generation applications. The hydrothermal combustion process is exceptionally clean burning, and allows full control over carbon dioxide and SOx emissions. NOx levels are inherently ultra-low due to lower combustion temperatures. Hydrothermal combustion technology is ready for pilot-scale engineering development and demonstration.

McGuinness, T.G. [Summit Research Corporation, Sante Fe, NM (United States); Marentis, R. [Summit Research Corporation, Allentown, PA (United States)

1994-12-31T23:59:59.000Z

380

Ultra-Clean Low Swirl Combustion : Technologies : From the Lab to the  

NLE Websites -- All DOE Office Websites (Extended Search)

Ultra-Clean Low Swirl Combustion Ultra-Clean Low Swirl Combustion From the Lab to the Marketplace Ten Years Later, Energy Efficient Technologies from Research at the Lawrence Berkeley National Laboratory Berkeley Lab logo (left) with six rows of gray dots transitioning to a line art drawing of a cityscape and residential houses. Ultra-Clean Low Swirl Combustion Combustion provides 83% of the energy consumed in the U.S. For the past three decades the reduction of harmful pollutants from combustion systems has been the major driver of combustion technology development. In 1991, Robert Cheng, a Berkeley Lab scientist, conceived a combustion method that emits a very low level of pollutants. His low swirl combustion method operates on a new basic principle that can be broadly applied to heat and

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Wind/hybrid power system test facilities in the United States and Canada  

SciTech Connect

By 1995, there will be four facilities available for testing of wind/hybrid power systems in the United States and Canada. This paper describes the mission, approach, capabilities, and status of activity at each of these facilities. These facilities have in common a focus on power systems for remote, off-grid locations that include wind energy. At the same time, these facilities have diverse, yet complimentary, missions that range from research to technology development to testing. The first facility is the test facility at the Institut de Recherche d`Hydro-Quebec (IREQ), Hydro-Quebec`s research institute near Montreal, Canada. This facility, not currently in operation, was used for initial experiments demonstrating the dynamic stability of a high penetration, no-storage wind/diesel (HPNSWD) concept. The second facility is located at the Atlantic Wind Test Site (AWTS) on Prince Edward Island, Canada, where testing of the HPNSWD concept developed by Hydro-Quebec is currently underway. The third is the Hybrid Power Test Facility planned for the National Wind Technology Center at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, which will focus on testing commercially available hybrid power systems. The fourth is the US Department of Agriculture (USDA) Conservation and Production Research Laboratory in Bushland, Texas, where a test laboratory is being developed to study wind-energy penetration and control strategies for wind/hybrid systems. The authors recognize that this summary of test facilities is not all inclusive; for example, at least one US industrial facility is currently testing a hybrid power system. Our intent, though, is to describe four facilities owned by nonprofit or governmental institutions in North America that are or will be available for ongoing development of wind/hybrid power systems.

Green, H J [National Renewable Energy Lab., Golden, CO (United States); Clark, R N [USDA Conservation and Production Research Laboratory, Bushland, TX (United States); Brothers, C [Atlantic Wind Test Site, North Cape, PE (Canada); Saulnier, B [Institut de Recherche d`Hydro-Quebec, Varennes, PQ (Canada)

1994-05-01T23:59:59.000Z

382

FEASIBILITY OF IN-SITU COMBUSTION OF TAR FROM A TARMAT Sidqi A. Abu-Khamsin  

E-Print Network (OSTI)

HTO = A exp[-EHTO /(RT)] (2) Where A is a frequency factor (consistent units) and R is the universal gas Combustion-tube tests were conducted on a tar of physical and chemical characteristics similar to a natural is difficult to mainatain under ordinary combustion-drive conditions, the tar appeared incapable of supporting

Abu-Khamsin, Sidqi

383

Chemical-Looping Combustion with Fuel Oil in a 10 kW Pilot Plant  

Science Journals Connector (OSTI)

Chemical-Looping Combustion with Fuel Oil in a 10 kW Pilot Plant ... The unit is based on interconnected fluidized beds and is similar to the design originally presented by Lyngfelt et al.(12) In the riser section there is a fast-fluidized regime, whereas in the loop-seals and the fuel reactor there is a bubbling regime. ... Energy Combust. ...

Patrick Moldenhauer; Magnus Rydn; Tobias Mattisson; Ali Hoteit; Aqil Jamal; Anders Lyngfelt

2014-08-29T23:59:59.000Z

384

STATEMENT OF CONSIDERATIONS REQUEST BY UNITED SOLAR SYSTEMS CORPORATION FOR AN  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOMESTIC AND FOREIGN PATENT RIGHTS DOMESTIC AND FOREIGN PATENT RIGHTS UNDER NREL SUBCONTRACT NO: ZAF-5-14142-01 UNDER DOE CONTRACT NO: DE-AC36-83CH10093; W(A)-95-004; CH-0848 The Petitioner, United Solar Systems Corporation, has requested a waiver of domestic and foreign patent rights for all subject inventions arising from the above referenced subcontract entitled "Thin Film Amorphous Silicon Alloy Research Partnership." The scope of work to be performed under this subcontract is to develop high performance two-terminal multibandgap, multijunction amorphous silicon alloy modules with low manufacturing cost and high reliability. The principle objectives are to conduct research on materials which enhance performance of thin film amorphous silicon alloy modules, to improve module reliability by qualifying the integrity of the metal/dielectric/semiconductor adhesion, and

385

Geospatiotemporal Data Mining in an Early Warning System for Forest Threats in the United States  

SciTech Connect

We investigate the potential of geospatiotemporal data mining of multi-year land surface phenology data (250~m Normalized Difference Vegetation Index (NDVI) values derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) in this study) for the conterminous United States as part of an early warning system to identify threats to forest ecosystems. Cluster analysis of this massive data set, using high-performance computing, provides a basis for several possible approaches to defining the bounds of ``normal'' phenological patterns, indicating healthy vegetation in a given geographic location. We demonstrate the applicability of such an approach, using it to identify areas in Colorado, USA, where an ongoing mountain pine beetle outbreak has caused significant tree mortality.

Hoffman, Forrest M [ORNL; Mills, Richard T [ORNL; Kumar, Jitendra [ORNL; Vulli, Srinivasa S [ORNL; HargroveJr., William Walter [United States Department of Agriculture (USDA), United States Forest Service (USFS)

2010-01-01T23:59:59.000Z

386

NETL: Advanced NOx Emissions Control: Control Technology - NOx Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Control Options and Integration Control Options and Integration Reaction Engineering International (REI) is optimizing the performance of, and reduce the technical risks associated with the combined application of low-NOx firing systems (LNFS) and post combustion controls through modeling, bench-scale testing, and field verification. Teaming with REI are the University of Utah and Brown University. During this two-year effort, REI will assess real-time monitoring equipment to evaluate waterwall wastage, soot formation, and burner stoichiometry, demonstrate analysis techniques to improve LNFS in combination with reburning/SNCR, assess selective catalytic reduction catalyst life, and develop UBC/fly ash separation processes. The REI program will be applicable to coal-fired boilers currently in use in the United States, including corner-, wall-, turbo-, and cyclone-fired units. However, the primary target of the research will be cyclone boilers, which are high NOx producing units and represent about 20% of the U.S. generating capacity. The results will also be applicable to all U.S. coals. The research will be divided into four key components:

387

Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Appliances: Validating VENT-II Title Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Appliances: Validating VENT-II Publication Type Report LBNL Report Number LBNL-6193E Year of Publication 2013 Authors Rapp, Vi H., Albert Pastor-Perez, Brett C. Singer, and Craig P. Wray Date Published 04/2013 Abstract VENT-II is a computer program designed to provide detailed analysis of natural draft and induced draft combustion appliance vent-systems (i.e., furnace or water heater). This program is capable of predicting house depressurization thresholds that lead to backdrafting and spillage of combustion appliances; however, validation reports of the program being applied for this

388

Refrigeration system with a compressor-pump unit and a liquid-injection desuperheating line  

DOE Patents (OSTI)

The refrigeration system includes a compressor-pump unit and/or a liquid-injection assembly. The refrigeration system is a vapor-compression refrigeration system that includes an expansion device, an evaporator, a compressor, a condenser, and a liquid pump between the condenser and the expansion device. The liquid pump improves efficiency of the refrigeration system by increasing the pressure of, thus subcooling, the liquid refrigerant delivered from the condenser to the expansion device. The liquid pump and the compressor are driven by a single driving device and, in this regard, are coupled to a single shaft of a driving device, such as a belt-drive, an engine, or an electric motor. While the driving device may be separately contained, in a preferred embodiment, the liquid pump, the compressor, and the driving device (i.e., an electric motor) are contained within a single sealable housing having pump and driving device cooling paths to subcool liquid refrigerant discharged from the liquid pump and to control the operating temperature of the driving device. In another aspect of the present invention, a liquid injection assembly is included in a refrigeration system to divert liquid refrigerant from the discharge of a liquid pressure amplification pump to a compressor discharge pathway within a compressor housing to desuperheat refrigerant vapor to the saturation point within the compressor housing. The liquid injection assembly includes a liquid injection pipe with a control valve to meter the volume of diverted liquid refrigerant. The liquid injection assembly may also include a feedback controller with a microprocessor responsive to a pressure sensor and a temperature sensor both positioned between the compressor to operate the control valve to maintain the refrigerant at or near saturation.

Gaul, Christopher J. (Thornton, CO)

2001-01-01T23:59:59.000Z

389

Understanding Carbon Sequestration Options in the United States: Capabilities of a Carbon Management Geographic Information System  

SciTech Connect

While one can discuss various sequestration options at a national or global level, the actual carbon management approach is highly site specific. In response to the need for a better understanding of carbon management options, Battelle in collaboration with Mitsubishi Corporation, has developed a state-of-the-art Geographic Information System (GIS) focused on carbon capture and sequestration opportunities in the United States. The GIS system contains information (e.g., fuel type, location, vintage, ownership, rated capacity) on all fossil-fired generation capacity in the Untied States with a rated capacity of at least 100 MW. There are also data on other CO2 sources (i.e., natural domes, gas processing plants, etc.) and associated pipelines currently serving enhanced oil recovery (EOR) projects. Data on current and prospective CO2 EOR projects include location, operator, reservoir and oil characteristics, production, and CO2 source. The system also contains information on priority deep saline aquifers and coal bed methane basins with potential for sequestering CO2. The GIS application not only enables data storage, flexible map making, and visualization capabilities, but also facilitates the spatial analyses required to solve complex linking of CO2 sources with appropriate and cost-effective sinks. A variety of screening criteria (spatial, geophysical, and economic) can be employed to identify sources and sinks most likely amenable to deployment of carbon capture and sequestration systems. The system is easily updateable, allowing it to stay on the leading edge of capture and sequestration technology as well as the ever-changing business landscape. Our paper and presentation will describe the development of this GIS and demonstrate its uses for carbon management analysis.

Dahowski, Robert T.; Dooley, James J.; Brown, Daryl R.; Mizoguchi, Akiyoshi; Shiozaki, Mai

2001-04-03T23:59:59.000Z

390

Module 3: Hydrogen Use in Internal Combustion Engines  

Energy.gov (U.S. Department of Energy (DOE))

This course covers combustive properties, air/fuel ratio, types of pre-ignition problems, type of ignition systems, crankcase ventilation issues, thermal efficiency, emissions, power output, effect of mixing hydrogen

391

Suppression of premixed combustion dynamics utilizing microjet air injection  

E-Print Network (OSTI)

The problem of thermoacoustic instability in continuous combustion systems is a major challenge in the field of propulsion and power generation. With the current environmental and political pressure that is being placed ...

Hudgins, Duane Edward

2008-01-01T23:59:59.000Z

392

Nanocomposite catalysts for soot combustion and propane steam reforming  

E-Print Network (OSTI)

A nanocomposite system, CuO-Ag/CeO 2, has been successfully developed to complete carbon black combustion by 400*C. This novel catalyst has excellent potential for application in the emission control of soot particulates ...

He, Hong, Ph. D. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

393

Commercial Combustion and CHP Systems  

Science Journals Connector (OSTI)

Wood heat for individual homes (i.e., wood stoves and pellet stoves) is widely recognized and understood in the Northeast USA. Commercial-scale wood heat and CHP (combined heat and power), however, ... the region...

Daniel Ciolkosz; Jim Babcock

2013-01-01T23:59:59.000Z

394

Particulate Waste Product Combustion System  

E-Print Network (OSTI)

. The introduction of fuels with high ash or silica content into burn.ers have produced problems of fly ash in the exhaust stream causing extensive darrage to boilers f1red by th gasification process. For exanple, the contlus ioo of the rice hull pre sents a... manner using underfire and overflre air to support fficient gasification of the by product, which results ln he pro:Juction of a c~ bustible gas mixture characteristic of organic sub- stances. Intro:Juction of the fuel stock into t cQ1mustion chamber...

King, D. R.; Chastain, C. E.

1984-01-01T23:59:59.000Z

395

Combustion powered linear actuator  

DOE Patents (OSTI)

The present invention provides robotic vehicles having wheeled and hopping mobilities that are capable of traversing (e.g. by hopping over) obstacles that are large in size relative to the robot and, are capable of operation in unpredictable terrain over long range. The present invention further provides combustion powered linear actuators, which can include latching mechanisms to facilitate pressurized fueling of the actuators, as can be used to provide wheeled vehicles with a hopping mobility.

Fischer, Gary J. (Albuquerque, NM)

2007-09-04T23:59:59.000Z

396

US DRIVE Advanced Combustion and Emission Control Technical Team Roadmap  

Energy.gov (U.S. Department of Energy (DOE))

The ACEC focuses on advanced engine and aftertreatment technology for three major combustion strategies: (1) Low-Temperature Combustion, (2) Dilute Gasoline combustion, and (3) Clean Diesel Combustion.

397

Assessment of Combustion and Turbulence Models for the Simulation...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine Assessment of Combustion and Turbulence Models for the Simulation of Combustion...

398

US DRIVE Advanced Combustion and Emission Control Technical Team...  

Energy Savers (EERE)

for three major combustion strategies: (1) Low-Temperature Combustion, (2) Dilute Gasoline combustion, and (3) Clean Diesel Combustion. acecroadmapjune2013.pdf More Documents...

399

Towards predicting dynamics in turbulent premixed combustion using PIV-PLIF measurements of flow-flame microstructure  

E-Print Network (OSTI)

Combustion dynamics are critical to the development of high-efficiency, low-emission and fuel-flexible combustion systems used for propulsion and power generation. Predicting the onset of dynamics remains a challenge because ...

Hong, Seung Hyuck

2014-01-01T23:59:59.000Z

400

Circulating Fluidized Bed Combustion of Brown Coal during Mixing Up Biomass  

Science Journals Connector (OSTI)

Especially for large CFBC units it is possible to employ only the co-firing of biomass because of logistic problems. So it is ... as well as best working parameters to use biomass as co-combustion fuel in already...

W. Neidel; M. Gohla; R. Borghardt; H. Reimer

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

NETL: Combustion Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Abbreviations & Acronyms Abbreviations & Acronyms Reference Shelf Solicitations & Awards Abbreviations & Acronyms The Combustion Technologies Product uses a number of abbreviations and acronyms. This web page gives you a definition of frequently used terms, as follows: 1½-Generation PFBC -- A PFBC plant where the hot (about 1400ºF) PFBC exhaust gases are used as a vitiated air supply for a natural gas combustor supplying high-temperature gas (above 2000ºF) to a combustion turbine expander (synonym for "PFB-NGT"). 1st-Generation PFBC -- Commercial PFBC technology where an unfired low-temperature (below 1650ºF) ruggedized turbine expander expands PFBC exhaust gases (synonym for "PFB-EGT"). 2nd-Generation PFBC (see synonyms: "APFBC," "PFB-CGT") -- Advanced PFBC where a carbonizer (mild gasifier) provides hot (about 1400ºF) coal-derived synthetic fuel gas to a special topping combustor. The carbonizer char is burned in the PFBC, and the PFBC exhaust is used as a hot (about 1400ºF) vitiated air supply for the topping combustor. The syngas and vitiated air are burned in a topping combustor to provide high-temperature gas (above 1700ºF) to a combustion turbine expander.

402

Apparatus for reducing the moisture content in combustible material by utilizing the heat from combustion of such material  

SciTech Connect

This patent describes apparatus for preparing moisture containing fuel material for combustion to produce heat energy and for applying the heat energy from the combustion for lowering the moisture content in the fuel material prior to combustion, the improvement comprising: boiler means for the combustion of the fuel material to produce heat energy, grinding apparatus for preparing the fuel material to produce heat energy; means for collecting prepared fuel material and for feeding the collected fuel material to the boiler means; a main gaseous fluid and fuel material conduit system; a second conduit system connecting the boiler means and the grinding apparatus to conduct heat energy to the grinding apparatus; connecting means between the returning side of the main conduit system and the boiler means for maintaining the main conduit system at a negative pressure to promote the flow of hot gaseous medium from the boiler means to the gringing apparatus.

Williams, R.M.

1992-03-17T23:59:59.000Z

403

COMBUSTION RESEARCH - FY-1979  

E-Print Network (OSTI)

Island - Unit 2 Accident," Nuclear Safety Analysis Centre,of accident risks in U.S. commercial nuclear power plants,"

,

2012-01-01T23:59:59.000Z

404

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

boost. * H 2 enrichment extends lean limit, improves C p C v ratio, lowers cylinder heat loss, assists cold start, lowers combustion irreversibility. IC Engine Work Reformer...

405

Measure Guideline: Combustion Safety for Natural Draft Appliances Through Appliance Zone Isolation  

SciTech Connect

This measure guideline covers how to assess and carry out the isolation of natural draft combustion appliances from the conditioned space of low-rise residential buildings. It deals with combustion appliances located either within the living space in enclosed closets or side rooms or outside the living space in an adjacent area like an attic or garage. This subset of houses does not require comprehensive combustion safety tests and simplified prescriptive procedures can be used to address safety concerns. This allows residential energy retrofit contractors inexperienced in advanced combustion safety testing to effectively address combustion safety issues and allow energy retrofits including tightening and changes to distribution and ventilation systems to proceed.

Fitzgerald, J.; Bohac, D.

2014-04-01T23:59:59.000Z

406

An investigation into the feasibility of an external combustion, steam injected gas turbine  

E-Print Network (OSTI)

output of the turbine without increasing the work required for compression. Second, the steam may be generated with waste 15 heat from the combustion process. In an internal combustion gas turbine, this would result in an increased work output per... which are: 1. Gas Turbine Engine 2. Heat Exchanger Unit 3. Steam Generator Unit 4. Dynamometer 26 A detailed description of the equipment used in the experiment will be presented in the section entitled Ap- paratus since the purpose...

Ford, David Bruce

2012-06-07T23:59:59.000Z

407

Closure Report for Corrective Action Unit 516: Septic Systems and Discharge Points  

SciTech Connect

Corrective Action Unit (CAU) 516 is located in Areas 3, 6, and 22 of the Nevada Test Site. CAU 516 is listed in the Federal Facility Agreement and Consent Order of 1996 as Septic Systems and Discharge Points, and is comprised of six Corrective Action Sites (CASs): {sm_bullet} CAS 03-59-01, Bldg 3C-36 Septic System {sm_bullet} CAS 03-59-02, Bldg 3C-45 Septic System {sm_bullet} CAS 06-51-01, Sump and Piping {sm_bullet} CAS 06-51-02, Clay Pipe and Debris {sm_bullet} CAS 06-51-03, Clean Out Box and Piping {sm_bullet} CAS 22-19-04, Vehicle Decontamination Area The Nevada Division of Environmental Protection (NDEP)-approved corrective action alternative for CASs 06-51-02 and 22-19-04 is no further action. The NDEP-approved corrective action alternative for CASs 03-59-01, 03-59-02, 06-51-01, and 06-51-03 is clean closure. Closure activities included removing and disposing of total petroleum hydrocarbon (TPH)-impacted septic tank contents, septic tanks, distribution/clean out boxes, and piping. CAU 516 was closed in accordance with the NDEP-approved CAU 516 Corrective Action Plan (CAP). The closure activities specified in the CAP were based on the recommendations presented in the CAU 516 Corrective Action Decision Document (U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office, 2004). This Closure Report documents CAU 516 closure activities. During closure activities, approximately 186 tons of hydrocarbon waste in the form of TPH-impacted soil and debris, as well as 89 tons of construction debris, were generated and managed and disposed of appropriately. Waste minimization techniques, such as field screening of soil samples and the utilization of laboratory analysis to characterize and classify waste streams, were employed during the performance of closure work.

NSTec Environmental Restoration

2007-02-01T23:59:59.000Z

408

Closure Report for Corrective Action Unit 562: Waste Systems, Nevada National Security Site, Nevada  

SciTech Connect

This Closure Report (CR) presents information supporting closure of Corrective Action Unit (CAU) 562, Waste Systems, and provides documentation supporting the completed corrective actions and confirmation that closure objectives for CAU 562 were met. This CR complies with the requirements of the Federal Facility Agreement and Consent Order (FFACO) that was agreed to by the State of Nevada; the U.S. Department of Energy (DOE), Environmental Management; the U.S. Department of Defense; and DOE, Legacy Management (FFACO, 1996 as amended). CAU 562 consists of the following 13 Corrective Action Sites (CASs), located in Areas 2, 23, and 25 of the Nevada National Security Site: CAS 02-26-11, Lead Shot CAS 02-44-02, Paint Spills and French Drain CAS 02-59-01, Septic System CAS 02-60-01, Concrete Drain CAS 02-60-02, French Drain CAS 02-60-03, Steam Cleaning Drain CAS 02-60-04, French Drain CAS 02-60-05, French Drain CAS 02-60-06, French Drain CAS 02-60-07, French Drain CAS 23-60-01, Mud Trap Drain and Outfall CAS 23-99-06, Grease Trap CAS 25-60-04, Building 3123 Outfalls Closure activities began in October 2011 and were completed in April 2012. Activities were conducted according to the Corrective Action Plan for CAU 562 (U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office [NNSA/NSO], 2011). The corrective actions included No Further Action and Clean Closure. Closure activities generated sanitary waste and hazardous waste. Some wastes exceeded land disposal limits and required offsite treatment prior to disposal. Other wastes met land disposal restrictions and were disposed in appropriate onsite or offsite landfills. NNSA/NSO requests the following: A Notice of Completion from the Nevada Division of Environmental Protection to NNSA/NSO for closure of CAU 562 The transfer of CAU 562 from Appendix III to Appendix IV, Closed Corrective Action Units, of the FFACO

NSTec Environmental Restoration

2012-08-15T23:59:59.000Z

409

Ancillary Services in the United States: Independent System Operator (ISO) Perspective (Presentation)  

SciTech Connect

The presentation provides an overview of how increasing penetrations of variable renewable energy on the electricity grid are impacting ancillary services markets in the United States.

Cochran, J.

2013-05-01T23:59:59.000Z

410

OXYGEN ENHANCED COMBUSTION FOR NOx CONTROL  

SciTech Connect

Conventional wisdom says adding oxygen to a combustion system enhances product throughput, system efficiency, and, unless special care is taken, increases NOx emissions. This increase in NOx emissions is typically due to elevated flame temperatures associated with oxygen use leading to added thermal NOx formation. Innovative low flame temperature oxy-fuel burner designs have been developed and commercialized to minimize both thermal and fuel NOx formation for gas and oil fired industrial furnaces. To be effective these systems require close to 100% oxy-fuel combustion and the cost of oxygen is paid for by fuel savings and other benefits. For applications to coal-fired utility boilers at the current cost of oxygen, however, it is not economically feasible to use 100% oxygen for NOx control. In spite of this conventional wisdom, Praxair and its team members, in partnership with the US Department of Energy National Energy Technology Laboratory, have developed a novel way to use oxygen to reduce NOx emissions without resorting to complete oxy-fuel conversion. In this concept oxygen is added to the combustion process to enhance operation of a low NOx combustion system. Only a small fraction of combustion air is replaced with oxygen in the process. By selectively adding oxygen to a low NOx combustion system it is possible to reduce NOx emissions from nitrogen-containing fuels, including pulverized coal, while improving combustion characteristics such as unburned carbon. A combination of experimental work and modeling was used to define how well oxygen enhanced combustion could reduce NOx emissions. The results of this work suggest that small amounts of oxygen replacement can reduce the NOx emissions as compared to the air-alone system. NOx emissions significantly below 0.15 lbs/MMBtu were measured. Oxygen addition was also shown to reduce carbon in ash. Comparison of the costs of using oxygen for NOx control against competing technologies, such as SCR, show that this concept offers substantial savings over SCR and is an economically attractive alternative to purchasing NOx credits or installing other conventional technologies. In conjunction with the development of oxygen based low NOx technology, Praxair also worked on developing the economically enhancing oxygen transport membrane (OTM) technology which is ideally suited for integration with combustion systems to achieve further significant cost reductions and efficiency improvements. This OTM oxygen production technology is based on ceramic mixed conductor membranes that operate at high temperatures and can be operated in a pressure driven mode to separate oxygen with infinite selectivity and high flux. An OTM material was selected and characterized. OTM elements were successfully fabricated. A single tube OTM reactor was designed and assembled. Testing of dense OTM elements was conducted with promising oxygen flux results of 100% of target flux. However, based on current natural gas prices and stand-alone air separation processes, ceramic membranes do not offer an economic advantage for this application. Under a different DOE-NETL Cooperative Agreement, Praxair is continuing to develop oxygen transport membranes for the Advanced Boiler where the economics appear more attractive.

David R. Thompson; Lawrence E. Bool; Jack C. Chen

2004-04-01T23:59:59.000Z

411

Second-generation pressurized fluidized bed combustion  

SciTech Connect

Under the sponsorship of the United States Department of Energy, Foster Wheeler Corporation is developing second-generation pressurized fluidized bed combustion (PFBC) power plant technology that will enable this type of plant to operate with net plant efficiencies in the range of 43 to 46 percent (based on the higher heating value of the coal), with a reduction in the cost of electricity of at least 20 percent. A three-phase program is under way. Its scope encompasses the conceptual design of a commercial plant through the process of gathering needed experimental test data to obtain design parameters.

Wolowodiuk, W.; Robertson, A.

1992-01-01T23:59:59.000Z

412

Second-generation pressurized fluidized bed combustion  

SciTech Connect

Under the sponsorship of the United States Department of Energy, Foster Wheeler Corporation is developing second-generation pressurized fluidized bed combustion (PFBC) power plant technology that will enable this type of plant to operate with net plant efficiencies in the range of 43 to 46 percent (based on the higher heating value of the coal), with a reduction in the cost of electricity of at least 20 percent. A three-phase program is under way. Its scope encompasses the conceptual design of a commercial plant through the process of gathering needed experimental test data to obtain design parameters.

Wolowodiuk, W.; Robertson, A.

1992-05-01T23:59:59.000Z

413

NETL: Combustion Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

AES Greenidge Units 3 and 4 with APFBC AES Greenidge Units 3 and 4 with APFBC FBC Repower APFBC AES Greenidge APFBC Dan River FBC, APFBC Four Corners CHIPPS H.F. Lee Products Summary Sheldon Summary APFBC Sheldon GFBCC Sheldon APFBC L.V. Sutton Contents: Summary Key Features of Greenidge APFBC Repowering Project Operating Conditions APFBC Repowered AES Greenidge Unit 4 Process Decisions Gas Turbine Environmental and Licensing Click on picture to enlarge Summary Units 3 and 4 are the last steam turbines installed at AES Greenidge steam power plant. These units are the focus of this DOE APFBC repowering evaluation. Information relating to the station and studies includes the following: Space is available to the west, and in the power house. Greenidge Unit 4, on left, is the main focus. It is a 106.3 MW unit built in 1953.

414

NETL: Combustion Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Progress Energy's L.V. Sutton Station Unit 1 and Unit 2 with APFBC Progress Energy's L.V. Sutton Station Unit 1 and Unit 2 with APFBC FBC Repower APFBC AES Greenidge APFBC Dan River FBC, APFBC Four Corners CHIPPS H.F. Lee Products Summary Sheldon Summary APFBC Sheldon GFBCC Sheldon APFBC L.V. Sutton The host site for this DOE APFBC repowering evaluation is Progress Energy's L.V. Sutton steam generating station, shown in Progress Energy's L.V. Sutton steam generating station the photo. This station sits on the Cape Fear River, near Wilmington, North Carolina. Unit 1 (front right) and Unit 2 (center), share the common stack to the right. These are the focus of the APFBC repowering evaluations. The larger Unit 3, in the background, has its own stack, but was not evaluated for APFBC repowering.

415

Some Experimental Studies of Oscillatory Combustion  

Science Journals Connector (OSTI)

Measurements of the perturbations in pressure as recorded by flush?mounted transducers during the combustion of mixtures of air and natural gas in a cooled copper tube at atmospheric pressure are reported for a range of mixture ratios. Also presented are the residual quantities of the oxides of nitrogen as well as the principal components of the products of reaction. The results indicate two stable modes of oscillation. One was found predominantly at mixture ratios above stoichiometric. There was a region near stoichiometric where both modes existed. The quantities of the residual oxides of nitrogen were from 1030 times as large during oscillatory combustion as during relatively steady combustion. In addition measurements in a smaller cooled copper combustor at pressures up to 50 lb/sq in. absolute are recorded. Again two stable modes of oscillation were encountered and the double amplitude of the oscillation for the mode near stoichiometric was nearly five times as great as that away from stoichiometric. The influence of mixture ratio and rates of flow was explored. The quantities of the oxides of nitrogen were determined after quenching the products of reaction at rates of approximately 5 per ?sec. Again the presence of oscillatory combustion appeared to exert a pronounced influence on the presence of oxides of nitrogen. In the case of the high?pressure combustor the premixed fuel and oxidant were introduced through a supersonic converging?diverging nozzle to avoid coupling between the feed system and the combustor.

B. H. Sage

1963-01-01T23:59:59.000Z

416

Sandia National Laboratories: Diesel Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Diesel Combustion Caterpillar, Sandia CRADA Opens Door to Multiple Research Projects On April 17, 2013, in Capabilities, Computational Modeling & Simulation, CRF, Materials...

417

ALS Evidence Confirms Combustion Theory  

NLE Websites -- All DOE Office Websites (Extended Search)

are produced, generally, when insufficient oxygen or other factors result in incomplete combustion of organic matter (e.g., in engines and incinerators, when biomass burns in...

418

Numerical Modeling of HCCI Combustion  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Numerical Modeling of HCCI Combustion Salvador M. Aceves, Daniel L. Flowers, J. Ray Smith, Joel Martinez-Frias, Francisco Espinosa-Loza, Tim Ross, Bruce Buchholz, Nick...

419

Increase of unit efficiency by improved waste heat recovery  

SciTech Connect

For coal-fired power plants with flue gas desulfurization by wet scrubbing and desulfurized exhaust gas discharge via cooling tower, a further improvement of new power plant efficiency is possible by exhaust gas heat recovery. The waste heat of exhaust gas is extracted in a flue gas cooler before the wet scrubber and recovered for combustion air and/or feedwater heating by either direct or indirect coupling of heat transfer. Different process configurations for heat recovery system are described and evaluated with regard to net unit improvement. For unite firing bituminous coal an increase of net unit efficiency of 0.25 to 0.7 percentage points and for lignite 0.7 to 1.6 percentage points can be realized depending on the process configurations of the heat recovery systems.

Bauer, G.; Lankes, F.

1998-07-01T23:59:59.000Z

420

French Project PLUSPAC: Development of a hydrogen storage unit for an optimisation of stationary FC systems  

E-Print Network (OSTI)

1/11 French Project PLUSPAC: Development of a hydrogen storage unit for an optimisation of the objectives of the French project PLUSPAC (Local Production and hydrogen Storage Unit for an optimisation is to evaluate the performances of hydrogen storage in metal hydrides for the energetic optimisation

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

The perceptions of information systems designers from the United States, Japan, and Korea on success and failure factors  

Science Journals Connector (OSTI)

This study examined the views of information systems (IS) designers from the United States, Japan and Korea on the importance of IS development factors in terms of how they contribute to both the success and failure of IS projects. IS designers from ... Keywords: Attribution theory, IS designers' perceptions, IS success and failure factors

Dane K. Peterson; Chung Kim; Joong Han Kim; Toshiyuki Tamura

2002-12-01T23:59:59.000Z

422

Corrective Action Plan for Corrective Action Unit 151: Septic Systems and Discharge Area, Nevada Test Site, Nevada  

SciTech Connect

Corrective Action Unit (CAU) 151, Septic Systems and Discharge Area, is listed in the Federal Facility Agreement and Consent Order (FFACO) of 1996 (FFACO, 1996). CAU 151 consists of eight Corrective Action Sites (CASs) located in Areas 2, 12, and 18 of the Nevada Test Site (NTS), which is located approximately 65 miles northwest of Las Vegas, Nevada.

NSTec Environmental Restoration

2007-03-01T23:59:59.000Z

423

VLSI ARCHITECTURE OF AN INVISIBLE WATERMARKING UNIT FOR A BIOMETRIC-BASED SECURITY SYSTEM IN A DIGITAL CAMERA  

E-Print Network (OSTI)

VLSI ARCHITECTURE OF AN INVISIBLE WATERMARKING UNIT FOR A BIOMETRIC-BASED SECURITY SYSTEM is performed using an invisible watermarking algorithm that allows for verification of the image as well implementing the invisible watermarking algorithm towards the development of the camera. I. INTRODUCTION

Mohanty, Saraju P.

424

Abstract--The healthcare system in the United States is undergoing changes aimed at affordable care, but the  

E-Print Network (OSTI)

on health care surpassed $2.5 trillion in 2008, Manuscripts received on April 1, 2012. This workAbstract--The healthcare system in the United States is undergoing changes aimed at affordable care decisions, and achieving the full potential of healthcare reform. As a consequence of healthcare reforms

425

Combustion Catalysts in Industry- An Update  

E-Print Network (OSTI)

applications of combustion catalysts for coal are presented. Combustion efficiency and calculations are discussed, followed by an explanation of the theories of combustion catalysis and a review of three case histories....

Merrell, G. A.; Knight, R. S.

426

Self-tuning regulators for combustion oscillations  

Science Journals Connector (OSTI)

...interaction of acoustic waves and combustion processes. An abundant literature...numerical simulations of the combustion processes and coupled fluid dynamics...nonlinear analysis of controlled combustion processes. In Proc. 1999 IEEE Int...

2003-01-01T23:59:59.000Z

427

Combustion Simulations [Heat Transfer and Fluid Mechanics] - Nuclear  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Simulations Combustion Simulations Capabilities Engineering Computation and Design Engineering and Structural Mechanics Systems/Component Design, Engineering and Drafting Heat Transfer and Fluid Mechanics Overview Thermal Hydraulic Optimization of Nuclear Systems Underhood Thermal Management Combustion Simulations Advanced Model and Methodology Development Multi-physics Reactor Performance and Safety Simulations Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Heat Transfer and Fluid Mechanics Bookmark and Share Combustion Simulations Density Distribution of Spray in Near-Injector Region Density Distribution of Spray in Near-Injector Region. Click on image to view larger image. Development of computer models based on Front-Tracking and

428

PV modules, with a life measured in decades, will typically be in place longer than the outdoor unit of a HVAC system.  

E-Print Network (OSTI)

unit of a HVAC system. When the performance of an HVAC system deteriorates, it is usually inspected remain installed on the roof even after the system is no longer being used. Although HVAC units have only jumpers and screws effectively bond all parts of the listed device together. HVAC components are typically

Johnson, Eric E.

429

The evaluation and application of Orimulsion by International Combustion Ltd  

SciTech Connect

Since the introduction of Orimulsion, in the 1980`s as a potential fuel for power generation, International Combustion Ltd. (ICL) have been involved with the original fuel manufacturer PdeV (Petroleos de Venezuela) and their commercial marketing organization (BITOR) in a comprehensive evaluation of this fuel for application to power generation boilers. This work encompassed both chemical and physical analyses of the original fuel formulations and modifications to improve handling and combustion performance. The first commercial scale firing demonstration of Orimulsion was performed by ICL in their full scale combustion test facilities at Derby in the UK. On this occasion PdeV took the opportunity to bring upwards of 40 visitors from 14 different countries to witness this full scale combustion demonstration which took place over a two week period during November, 1987. Further full scale combustion demonstration and development was carried out on alternative fuel formulations and combustion equipment for application to a 400 MWe front wall fired boiler at Florida Power and Light Sanford Utility in 1990. Recently the Orimulsion combustion work at ICL has concentrated on the application of the fuel in low NOx burner systems with potential for utilization in large (500 MWe plus) oil fired boilers both in the UK and USA. Fuel and gas handling equipment and hardware have been supplied by ICL to the 120 MWe and 500 MWe utility boilers operating on Orimulsion, on a continuous basis in the UK.

Allen, J.W.; Beal, P.R. [International Combustion Ltd., Derby (United Kingdom). Rolls-Royce Industrial Power Group

1996-12-31T23:59:59.000Z

430

Fluidized bed combustion picks up steam  

SciTech Connect

Industrial interest in fluidized-bed combustion (FBC) continues, although the technology has been slow to enter the marketplace. Two FBC pilot plants funded by DOE and one commercial size project are in operation. FBC designs and commercial warranties are already available from the boiler industry, but 1981 was the first year to see significant numbers of privately-funded orders, now numbering 38 out of 50 boilers. Manufacturers are working on a universal boiler able to accept any fuel, but potential users are wary of new technology without a long-term demonstration of reliability and economics. There is interest in second generation designs, a new shallow-bed design suitable for retrofitting, and circulating bed types that decouple the combustion system from the heat removal system. (DCK)

Lawn, J.

1982-02-01T23:59:59.000Z

431

The Future of Combustion Turbine Technology for Industrial and Utility Power Generation  

E-Print Network (OSTI)

gasification-based combustion turbine systems. The paper dmws heavily from a technical, economic, and business analysis, Combustion Turbine Power Systems, recently completed by SFA Pacific. The analysis was sponsored by an international group of energy...-14, 1994 Coupled with gasification, combustion turbine power generation also may provide attractive opportunities for other fuels, such as low-value residual oils and petroleum coke. Residual oil firing of boilers in large steam turbine-based power...

Karp, A. D.; Simbeck, D. R.

432

Emission of nanoparticles during combustion of waste biomass in fireplace  

Science Journals Connector (OSTI)

Contamination of air by solid particles is serious problem for human health and also environment. Small particles in nano-sizes are more dangerous than same weight of larger size. Negative effect namely of the solid particles depends on (i) number (ii) specific surface area (iii) respirability and (iv) bonding of others substances (e.g. PAHs As Cd Zn Cu etc.) which are higher for smaller (nano-sizes) particles compared to larger one. For this reason mentioned above this contribution deals with measuring of amount and distribution of nanoparticles produced form combustion of waste city biomass in small combustion unit with impactor DLPI.

2014-01-01T23:59:59.000Z

433

Pyrogenic carbon emission from a large wildfire in Oregon, United States  

E-Print Network (OSTI)

: area burned, fuel density (biomass per unit area), combustion factor (fraction of biomass consumed at 180 independent locations in the burn area. Average combustion factors for each of these pools were and ground fuel. Combustion factors were highest for litter, duff, and foliage, lowest for live woody pools

Turner, Monica G.

434

Combustion-thermoelectric tube  

SciTech Connect

In direct combustion-thermoelectric energy conversion, direct fuel injection and reciprocation of the air flowing in a solid matrix are combined with the solid conduction to allow for obtaining super-adiabatic temperatures at the hot junctions. While the solid conductivity is necessary, the relatively large thermal conductivity of the available high-temperature thermoelectric materials (e.g., Si-Ge alloys) results in a large conduction loss from the hot junctions and deteriorates the performance. Here a combustion-thermoelectric tube is introduced and analyzed. Radially averaged temperatures are used for the fluid and solid phases. A combination of external cooling of the cold junctions, and direct injection of the fuel, has been used to increase the energy conversion efficiency for low thermal conductivity, high-melting temperature thermoelectric materials. The parametric study (geometry, flow, stoichiometry, materials) shows that with the current high figure of merit, high temperature Si{sub 0.7}Ge{sub 0.3} properties, a conversion efficiency of about 11% is achievable. With lower thermal conductivities for these high-temperature materials, efficiencies about 25% appear possible. This places this energy conversion in line with the other high efficiency, direct electric power generation methods.

Park, C.W.; Kaviany, M.

1999-07-01T23:59:59.000Z

435

Ultrarich Filtration Combustion of Ethane  

Science Journals Connector (OSTI)

Ultrarich filtration combustion of ethane is studied in a porous medium composed of alumina spheres with the aim to achieve optimized conversion to hydrogen and syngas. ... Dhamrat, R. S.; Ellzey, J. L.Numerical and experimental study of the conversion of methane to hydrogen in a porous media reactor Combust. ...

Mario Toledo; Khriscia Utria; Alexei V. Saveliev

2014-01-28T23:59:59.000Z

436

Further investigation of the impact of the co-combustion of tire-derived fuel and petroleum coke on the petrology and chemistry of coal combustion products  

SciTech Connect

A Kentucky cyclone-fired unit burns coal and tire-derived fuel, sometimes in combination with petroleum coke. A parallel pulverized combustion (pc) unit at the same plant burns the same coal, without the added fuels. The petrology, chemistry, and sulfur isotope distribution in the fuel and resulting combustion products was investigated for several configurations of the fuel blend. Zinc and Cd in the combustion products are primarily contributed from the tire-derived fuel, the V and Ni are primarily from the petroleum coke, and the As and Hg are probably largely from the coal. The sulfur isotope distribution in the cyclone unit is complicated due to the varying fuel sources. The electrostatic precipitator (ESP) array in the pc unit shows a subtle trend towards heavier S isotopic ratios in the cooler end of the ESP.

Hower, J.C.; Robertson, J.D.; Elswick, E.R.; Roberts, J.M.; Brandsteder, K.; Trimble, A.S.; Mardon, S.M. [University of Kentucky, Lexington, KY (United States). Center for Applied Energy Research

2007-07-01T23:59:59.000Z

437

A Generalized Pyrolysis Model for Combustible Solids  

E-Print Network (OSTI)

model. ?H c is the heat of combustion, and the ratio ?H c /?may have widely varying heats of combustion (CO vs. gaseous

Lautenberger, Chris

2007-01-01T23:59:59.000Z

438

Optimization of Advanced Diesel Engine Combustion Strategies...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies 2010 DOE Vehicle Technologies and Hydrogen Programs Annual...

439

Vehicle Technologies Office: Advanced Combustion Engines | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Batteries Fuel Efficiency & Emissions Combustion Engines Fuel Effects on Combustion Idle Reduction Emissions Waste Heat Recovery Lightweighting Parasitic Loss Reduction Lubricants...

440

Sandia Hydrogen Combustion Research | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Sandia Hydrogen Combustion Research Sandia Hydrogen Combustion Research Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008...

Note: This page contains sample records for the topic "units combustion system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary...

442

Fluid Bed Combustion Applied to Industrial Waste  

E-Print Network (OSTI)

of its relatively recent application to coal fired steam production, fluid beds have been uti lized in industry for over 60 years. Beginning in Germany in the twenties for coal gasification, the technology was applied to catalytic cracking of heavy... system cost), use of minimum excess air required, and maintaining the min"imum reactor temperature neces sary to sustain combustion. For superautogenous fuels, where incineration. only is desired, minimum capital cost is achieved by using direct bed...

Mullen, J. F.; Sneyd, R. J.

443

Copper-Decorated Hematite as an Oxygen Carrier for in Situ Gasification Chemical Looping Combustion of Coal  

Science Journals Connector (OSTI)

Copper-Decorated Hematite as an Oxygen Carrier for in Situ Gasification Chemical Looping Combustion of Coal ... State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074 Hubei, Peoples Republic of China ... Iron ore is a cheap and nontoxic oxygen carrier in chemical looping combustion (CLC) systems. ...

Weijing Yang; Haibo Zhao; Jinchen Ma; Daofeng Mei; Chuguang Zheng

2014-05-12T23:59:59.000Z

444

Department of Mechanical and Nuclear Engineering Spring 2013 Project Name Large Scale Biomass Combustion Verification and Analysis  

E-Print Network (OSTI)

Biomass Combustion Verification and Analysis Overview Team PSU PENNTAP 2 was tasked with determining was to produce a user-friendly analytical model of the Challenger 400 series biomass combustion system of experts in the field of biomass combustion and its analysis. These experts were Fred Fries of Dillon

Demirel, Melik C.

445

Prioritizing Abandoned Coal Mine Reclamation Projects Within the Contiguous United States Using Geographic Information System Extrapolation  

Science Journals Connector (OSTI)

Coal mine reclamation projects are very expensive and ... combination of spatial data on resources for the coal mine reclamation and uses GIS analysis to develop a priority list of ... United States, it was possi...

Yuri Gorokhovich; Andrew Voros; Matthew Reid; Erica Mignone

2003-10-01T23:59:59.000Z

446

United Technologies Corporation: Achieving Competitive Excellence (ACE): Operating System Case Study  

E-Print Network (OSTI)

United Technologies Corporation (abbreviated UTC, NYSE ticker symbol UTX) is a large, industrial conglomerate that designs, manufactures, and services a broad range of products, ranging from air conditioners and elevators ...

Roth, George

2010-11-30T23:59:59.000Z

447

FLAMMABILITY CHARACTERISTICS OF COMBUSTIBLE GASES AND VAPORS  

Office of Scientific and Technical Information (OSTI)

Bulletin 627 Bulletin 627 BUREAU o b MINES FLAMMABILITY CHARACTERISTICS OF COMBUSTIBLE GASES AND VAPORS By Michael G. Zabetakis DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement,

448

DOE cost comparison study industrial fluidized bed combustion vs conventional coal technology  

SciTech Connect

This study compares the capital and operating costs of two different industrial boiler technologies, each producing 250,000 lbs steam/hr. These technologies are: Fluidized Bed Combustion (FBC) and Pulverized Coal (PC) combustion used in conjunction with a limestone Flue Gas Desulfurization (FGD) system. Three separate turnkey plant designs have been completed. Two of these plant designs incorporate FBC technology and have been designated FBA-16 and FBV-16. The first FBC design (FBA-16) contains two shop assembled, rail shippable fluid bed boilers capable of producing 125,000 lbs/hr each. The second plant design (FBV-16) utilizes a single 250,000 lbs/hr fluid bed boiler shipped by rail in large sections for field assembly. The third plant design utilizes a conventional pulverized coal (PC) boiler in conjunction with a C-E Air Quality Control System (AQCS) limestone scrubber. Capital costs were generated for the three turnkey plant designs just described. The FBA-16, FBV-16, and Conventional Unit plant designs have associated capital costs of $24.4, $22.8, and $24.7 million, respectively. Comparisons between plant capital cost estimates are valid and informative. The total operational costs, which include contingencies on new product design for the Fluid Bed Units, were found to vary between four and seven percent higher than the Conventional Unit. When contingencies are not included, the operating costs were found to be between one and three percent higher than the Conventional Unit. As can be seen, the operating costs for the bed designs are close enough to be considered similar when considering the nature of the study. The efficiency of the fluid bed plant designs can be increased and required capital equipment reduced by improvements to the plant design with time and more development. Some potential design modifications are outlined.

Myrick, D.T.

1980-01-02T23:59:59.000Z

449

An Analysis of Residential PV System Price Differences Between the United States and Germany  

E-Print Network (OSTI)

L. , 1978. Cost of Photovoltaic Energy Systems as Determinedcommercial photovoltaic systems in California. Energy PolicyDepartment of Energy, 2010. $1/W Photovoltaic Systems. White

Seel, Joachim

2014-01-01T23:59:59.000Z

450

Air-Side Energy Use Calculations for Four HVAC Systems: Dual Duct Constant Volume (DDCAV), Dual Duct Variable Volume (DDVAV), Constant Volume with Reheat (CAVRH), Variable Volume with Reheat (VAVRH), Four Pipe Fan Coil Unit (FC), Four Pipe Induction Unit (FI), and Single Zone (SZ) Systems, Revised June 2002  

E-Print Network (OSTI)

(CAVRH), and variable volume with reheat (VAVRH), four pipe fan coil unit (FC), four pipe induction unit (FI), and a single zone air conditioning system (SZ). These calculations are presented in spreadsheets that include a running commentary so...

Haberl, J. S.; Bou-Saada, T. E.; Saman, N. F.

2001-01-01T23:59:59.000Z

451

Combustion of viscous hydrocarbons  

SciTech Connect

A method is described for utilizing viscous hydrocarbons as combustible pre-atomized fuels, comprising: (A) forming a hydrocarbon-in-water emulsion using an effective amount of a surfactant package comprising at least one water-soluble surfactant, the hydrocarbon-in-water emulsion (1) comprising a hydrocarbon characterized by API gravity of about 20/sup 0/ API or less, viscosity of about 1000 centipoise or greater at 212/sup 0/F., a paraffin content of about 50% by weight or less and, an aromatic content of about 15% by weight or greater, and (2) having a hydrocarbon water ratio from about 60:40 to about 90:10 by volume; and (B) burning the resultant hydrocarbon-in-water emulsion.

Hayes, M.E.; Hrebenar, K.R.; Murphy, P.L.; Futch, L.E. Jr.; Deal, J.F. III; Bolden, P.L. Jr.

1987-08-04T23:59:59.000Z

452

Combustion of viscous hydrocarbons  

SciTech Connect

A method is described for utilizing viscous hydrocarbons as combustible fuels comprising: (A) forming a hydrocarbosol using a surfactant package in a proportion of about 1:100 to about 1:20,000 by weight based on hydrocarbon, (1) the surfactant package comprising (a) at least one water-soluble surfactant, an effective amount of which surfactant promotes emulsification of a hydrocarbon with API gravity of about 20/sup 0//sup o/ API or less; and (b) at least one water-soluble bioemulsifier, being a microboally-derived substance which predominantly resides at hydrocarbon/water interfaces to substantially surround hydrocarbon droplets in hydrocarbon-in-water emulsions; (2) the hydrocarbosol (a) comprising a hydrocarbon characterized by an API gravity of about 20/sup 0//sup o/ API or less; (b) having a hydrocarbon:water ratio of about 70:30 by volume; and (B) burning the resultant hydrocarbosol.

Hayes, M.E.; Hrebenar, K.R.; Murphy, P.L.; Futch, L.E. Jr.; Deal, J.F. III

1986-10-21T23:59:59.000Z

453

NETL: Combustion Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Gas Turbines for APFBC Gas Turbines for APFBC FBC Repower Simple Description Detailed Description APFBC Specs GTs for APFBC Suited for Repowering Existing Power Plants with Advanced Pressurized Fluidized-Bed Combined Cycles APFBC combined cycles have high energy efficiency levels because they use modern, high-temperature, high-efficiency gas turbines as the core of a combined power cycle. This web page discusses a current U.S. Department of Energy project that is evaluating combustion turbines suited for repowering existing steam plants. The natural-gas-fueled version of the Siemens Westinghouse Power Corporation W501F. Modified versions of this gas turbine core are suited for operating in APFBC power plants. Contents: Introduction APFBC Repowering Considerations

454

United States Government  

Office of Legacy Management (LM)

D;F&g,8 C-r-I 3-3 D;F&g,8 C-r-I 3-3 .*. United States Government . memorandum DATE: JUNZO 1994 -... REPLY TO A?TN OF: EM-421 (W. A. Williams, 903-8149) Authority Determination -- Combustion Engineering Site, Windsor, SUBJECT: Connecticut To' The File The attached review, documents the basis for determining whether the Department of Energy (DOE) has authority for taking remedial action at the Combustion Engineering (CE) Site in Windsor, Connecticut, under the Formerly Utilized Sites Remedial Action Program. CE was a prime contractor for the Atomic Energy Commission (AEC) and performed high-enriched uranium fuel fabrication work from 1955 to 1967. The services furnished at the CE site included some experimental work; however, it primarily consisted of fabrication of high-enriched uranium

455

Critical reaction rates in hypersonic combustion chemistry  

SciTech Connect

High Mach number flight requires that the scramjet propulsion system operate at a relatively low static inlet pressure and a high inlet temperature. These two constraints can lead to extremely high temperatures in the combustor, yielding high densities of radical species and correspondingly poor chemical combustion efficiency. As the temperature drops in the nozzle expansion, recombination of these excess radicals can produce more product species, higher heat yield, and potentially more thrust. The extent to which the chemical efficiency can be enhanced in the nozzle expansion depends directly on the rate of the radical recombination reactions. A comprehensive assessment of the important chemical processes and an experimental validation of the critical rate parameters is therefore required if accurate predictions of scramjet performance are to be obtained. This report covers the identification of critical reactions, and the critical reaction rates in hypersonic combustion chemistry. 4 refs., 2 figs.

Oldenborg, R.C.; Harradine, D.M.; Loge, G.W.; Lyman, J.L.; Schott, G.L.; Winn, K.R.

1989-01-01T23:59:59.000Z

456

Closure Report for Corrective Action Unit 224: Decon Pad and Septic Systems, Nevada Test Site, Nevada  

SciTech Connect

Corrective Action Unit (CAU) 224 is located in Areas 02, 03, 05, 06, 11, and 23 of the Nevada Test Site, which is situated approximately 65 miles northwest of Las Vegas, Nevada. CAU 224 is listed in the Federal Facility Agreement and Consent Order (FFACO) of 1996 as Decon Pad and Septic Systems and is comprised of the following nine Corrective Action Sites (CASs): CAS 02-04-01, Septic Tank (Buried); CAS 03-05-01, Leachfield; CAS 05-04-01, Septic Tanks (4)/Discharge Area; CAS 06-03-01, Sewage Lagoons (3); CAS 06-05-01, Leachfield; CAS 06-17-04, Decon Pad and Wastewater Catch; CAS 06-23-01, Decon Pad Discharge Piping; CAS 11-04-01, Sewage Lagoon; and CAS 23-05-02, Leachfield. The Nevada Division of Environmental Protection (NDEP)-approved corrective action alternative for CASs 02-04-01, 03-05-01, 06-03-01, 11-04-01, and 23-05-02 is no further action. As a best management practice, the septic tanks and distribution box were removed from CASs 02-04-01 and 11-04-01 and disposed of as hydrocarbon waste. The NDEP-approved correction action alternative for CASs 05-04-01, 06-05-01, 06-17-04, and 06-23-01 is clean closure. Closure activities for these CASs included removing and disposing of radiologically and pesticide-impacted soil and debris. CAU 224 was closed in accordance with the NDEP-approved CAU 224 Corrective Action Plan (CAP). The closure activities specified in the CAP were based on the recommendations presented in the CAU 224 Corrective Action Decision Document (U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office, 2005). This Closure Report documents CAU 224 closure activities. During closure activities, approximately 60 cubic yards (yd3) of mixed waste in the form of soil and debris; approximately 70 yd{sup 3} of sanitary waste in the form of soil, liquid from septic tanks, and concrete debris; approximately 10 yd{sup 3} of hazardous waste in the form of pesticide-impacted soil; approximately 0.5 yd{sup 3} of universal waste in the form of fluorescent light bulbs; and approximately 0.5 yd{sup 3} of low-level waste in the form of a radiologically impacted fire hose rack were generated, managed, and disposed of appropriately. Waste minimization techniques, such as the utilization of laboratory analysis and field screening to guide the extent of excavations, were employed during the performance of closure work.

NSTec Environmental Restoration

2007-10-01T23:59:59.000Z

457

Low Temperature Combustion Demonstrator for High Efficiency Clean Combustion  

Energy.gov (U.S. Department of Energy (DOE))

Applied low temperature combustion to the Navistar 6.4L V8 engine with 0.2g NOx/bhp-hr operation attained at the rated 16.5 BMEP

458

Modeling of Combustion Processes in Internal Combustion Engines  

Science Journals Connector (OSTI)

Improving internal combustion engines (ICE) and increasing the quality of operation are linked with the necessity of maximally increasing the degree of compression. For ICE with spark ignition (otto cycle), th...

V. A. Vinokurov; V. A. Kaminskii; V. A. Frost

2000-11-01T23:59:59.000Z

459

Some recent advances in droplet combustion  

Science Journals Connector (OSTI)

This paper reviews the theoretical and experimental advances in droplet combustion since the 1982 Second International Colloquium on Drops and Bubbles. Specific topics discussed include multicomponent droplet combustion and microexplosion convection droplet combustion the combustion of slurries propellants and hazardous wastes soot formation in droplet burning and several miscellaneous subjects. Areas of further research are suggested.

C. K. Law

1990-01-01T23:59:59.000Z

460

Application of CFB technology for large power generating units and CO{sub 2} capture  

SciTech Connect

Data on the development of the circulating fluidized bed (CFB) technology for combustion of fuels in large power generating units are examined. The problems with raising the steam parameters and unit power of boilers with a circulating fluidized bed are examined. With the boiler system at the 460 MW unit at Lagisza (Poland) as an example, the feasibility of raising the efficiency of units with CFB boilers through deep recovery of the heat of the effluent gases and reducing expenditure for in-house needs is demonstrated. Comparative estimates of the capital and operating costs of 225 and 330 MW units are used to determine the conditions for optimum use of CFB boilers in the engineering renovation of thermal power plants in Russia. New areas for the application of CFB technology in CO{sub 2} capture are analyzed in connection with the problem of reducing greenhouse gas emissions.

Ryabov, G. A., E-mail: georgy.ryabov@gmail.com; Folomeev, O. M.; Sankin, D. A.; Khaneev, K. V.; Bondarenko, I. G.; Mel'nikov, D. A. [JSC 'All-Russian Thermotechnical Institute' ('VTI') (Russian Federation)

2010-07-15T23:59:59.000Z

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