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Note: This page contains sample records for the topic "internal combustion maglev" 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.
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1

Internal combustion engine  

SciTech Connect

An improvement to an internal combustion engine is disclosed that has a fuel system for feeding a fuel-air mixture to the combustion chambers and an electrical generation system, such as an alternator. An electrolytic cell is attached adjacent to the engine to generate hydrogen and oxygen upon the application of a voltage between the cathode and anode of the electrolytic cell. The gas feed connects the electrolytic cell to the engine fuel system for feeding the hydrogen and oxygen to the engine combustion chambers. Improvements include placing the electrolytic cell under a predetermined pressure to prevent the electrolyte from boiling off, a cooling system for the electrolytic cell and safety features.

Valdespino, J.M.

1981-06-09T23:59:59.000Z

2

Low emission internal combustion engine  

DOE Patents (OSTI)

A low emission, internal combustion compression ignition engine having a cylinder, a piston movable in the cylinder and a pre-combustion chamber communicating with the cylinder near the top thereof and in which low emissions of NO.sub.x are achieved by constructing the pre-combustion chamber to have a volume of between 70% and 85% of the combined pre-chamber and main combustion chamber volume when the piston is at top dead center and by variably controlling the initiation of fuel injection into the pre-combustion chamber.

Karaba, Albert M. (Muskegon, MI)

1979-01-01T23:59:59.000Z

3

Advanced Vehicle Testing Activity: Other Internal Combustion...  

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

Other Internal Combustion Engine Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Other Internal Combustion Engine Vehicles on Facebook Tweet about Advanced...

4

Contrôle de combustion en transitoires des moteurs ŕ combustion interne.  

E-Print Network (OSTI)

??Cette thčse traite le problčme du contrôle de combustion des moteurs automobiles ŕ combustion interne. On propose une méthode complétant les stratégies de contrôle existantes… (more)

Hillion, Mathieu

2009-01-01T23:59:59.000Z

5

Internal combustion engine  

DOE Patents (OSTI)

An improved engine is provided that more efficiently consumes difficult fuels such as coal slurries or powdered coal. The engine includes a precombustion chamber having a portion thereof formed by an ignition plug. The precombustion chamber is arranged so that when the piston is proximate the head, the precombustion chamber is sealed from the main cylinder or the main combustion chamber and when the piston is remote from the head, the precombustion chamber and main combustion chamber are in communication. The time for burning of fuel in the precombustion chamber can be regulated by the distance required to move the piston from the top dead center position to the position wherein the precombustion chamber and main combustion chamber are in communication.

Baker, Quentin A. (P.O. Box 6477, San Antonio, TX 78209); Mecredy, Henry E. (1630-C W. 6th, Austin, TX 78703); O' Neal, Glenn B. (6503 Wagner Way, San Antonio, TX 78256)

1991-01-01T23:59:59.000Z

6

Free Energy and Internal Combustion Engine Cycles  

E-Print Network (OSTI)

The performance of one type (Carnot) of Internal Combustion Engine (ICE) cycle is analyzed within the framework of thermodynamic free energies. ICE performance is different from that of an External Combustion Engine (ECE) which is dictated by Carnot's rule.

Harris, William D

2012-01-01T23:59:59.000Z

7

Advanced Vehicle Testing Activity- Other Internal Combustion...  

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

Other Internal Combustion Engine Vehicles What's New 2012 Honda Civic CNG Baseline Performance Testing (PDF 292KB) 2013 Volkswagen Jetta TDI Baseline Performance Testing (PDF...

8

Advanced Vehicle Testing Activity: Hydrogen Internal Combustion...  

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

to someone by E-mail Share Advanced Vehicle Testing Activity: Hydrogen Internal Combustion Engine Vehicle Basics on Facebook Tweet about Advanced Vehicle Testing Activity:...

9

Advanced Vehicle Testing Activity: Other Internal Combustion...  

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

Other Internal Combustion Engine Vehicles The Advanced Vehicle Testing Activity (AVTA) is tasked by the U.S. Department of Energy's (DOE) Vehicle Technology Office (VTO) to conduct...

10

Insitu Oxygen Conduction Into Internal Combustion Chamber  

Insitu Oxygen Conduction Into Internal Combustion Chamber Note: The technology described above is an early stage opportunity. Licensing rights to this ...

11

Advanced Vehicle Testing Activity: Hydrogen Internal Combustion...  

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

to someone by E-mail Share Advanced Vehicle Testing Activity: Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures on Facebook Tweet about Advanced...

12

Internal combustion engine and method for control  

SciTech Connect

In one exemplary embodiment of the invention an internal combustion engine includes a piston disposed in a cylinder, a valve configured to control flow of air into the cylinder and an actuator coupled to the valve to control a position of the valve. The internal combustion engine also includes a controller coupled to the actuator, wherein the controller is configured to close the valve when an uncontrolled condition for the internal engine is determined.

Brennan, Daniel G

2013-05-21T23:59:59.000Z

13

Carburetor for internal combustion engines  

DOE Patents (OSTI)

A carburetor for internal combustion engines having a housing including a generally discoidal wall and a hub extending axially from the central portion thereof, an air valve having a relatively flat radially extending surface directed toward and concentric with said discoidal wall and with a central conoidal portion having its apex directed toward the interior of said hub portion. The housing wall and the radially extending surface of the valve define an air passage converging radially inwardly to form an annular valving construction and thence diverge into the interior of said hub. The hub includes an annular fuel passage terminating at its upper end in a circumferential series of micro-passages for directing liquid fuel uniformly distributed into said air passage substantially at said valving constriction at right angles to the direction of air flow. The air valve is adjustable axially toward and away from the discoidal wall of the carburetor housing to regulate the volume of air drawn into the engine with which said carburetor is associated. Fuel is delivered under pressure to the fuel metering valve and from there through said micro-passages and controlled cams simultaneously regulate the axial adjustment of said air valve and the rate of delivery of fuel through said micro-passages according to a predetermined ratio pattern. A third jointly controlled cam simultaneously regulates the ignition timing in accordance with various air and fuel supply settings. The air valve, fuel supply and ignition timing settings are all independent of the existing degree of engine vacuum.

Csonka, John J. (625 Linwood Ave., Buffalo, NY 14209); Csonka, Albert B. (109 Larchmont Rd., Buffalo, NY 14214)

1978-01-01T23:59:59.000Z

14

Internal combustion electric power hybrid power plant  

SciTech Connect

An internal combustion-electric motor hybrid power plant for an automotive vehicle is disclosed. The power plant includes an internal combustion engine and a direct current electric motor generator which are connected to a drive shaft for the vehicle. A clutch mechanism is provided to connect the internal combustion engine, the direct current electric motor generator and the drive shaft for selectively engaging and disengaging the drive shaft with the internal combustion engine and the motor generator. A storage battery is electrically connected to the motor generator to supply current to and receive current therefrom. Thermoelectric semi-conductors are arranged to be heated by the waste heat of the internal combustion engine. These thermoelectric semi-conductors are electrically connected to the battery to supply current thereto. The thermoelectric semi-conductors are mounted in contact with the outer surfaces of the exhaust pipe of the internal combustion engine and also with the outer surfaces of the cylinder walls of the engine.

Cummings, T.A.

1979-04-10T23:59:59.000Z

15

Two phase exhaust for internal combustion engine  

Science Conference Proceedings (OSTI)

An internal combustion engine having a reciprocating multi cylinder internal combustion engine with multiple valves. At least a pair of exhaust valves are provided and each supply a separate power extraction device. The first exhaust valves connect to a power turbine used to provide additional power to the engine either mechanically or electrically. The flow path from these exhaust valves is smaller in area and volume than a second flow path which is used to deliver products of combustion to a turbocharger turbine. The timing of the exhaust valve events is controlled to produce a higher grade of energy to the power turbine and enhance the ability to extract power from the combustion process.

Vuk, Carl T. (Denver, IA)

2011-11-29T23:59:59.000Z

16

2.61 Internal Combustion Engines, Spring 2004  

E-Print Network (OSTI)

Fundamentals of how the design and operation of internal combustion engines affect their performance, operation, fuel requirements, and environmental impact. Study of fluid flow, thermodynamics, combustion, heat transfer ...

Heywood, John B.

17

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

18

Jet plume injection and combustion system for internal combustion engines  

DOE Patents (OSTI)

This invention is comprised of 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, A.K.; Maxson, J.A.; Hensinger, D.M.

1992-12-31T23:59:59.000Z

19

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. 24 figures.

Oppenheim, A.K.; Maxson, J.A.; Hensinger, D.M.

1993-12-21T23:59:59.000Z

20

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

Note: This page contains sample records for the topic "internal combustion maglev" 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

Twenty-Seventh Symposium (International) on Combustion/The Combustion Institute, 1998/pp. 28152820 FINGERING INSTABILITY IN SOLID FUEL COMBUSTION  

E-Print Network (OSTI)

2815 Twenty-Seventh Symposium (International) on Combustion/The Combustion Institute, 1998/pp. 2815­2820 FINGERING INSTABILITY IN SOLID FUEL COMBUSTION: THE CHARACTERISTIC SCALES OF THE DEVELOPED STATE ORY ZIK, Israel We present new results on the fingering instability in solid fuel combustion. The instability

Moses, Elisha

22

Findings of Hydrogen Internal Combustion Engine Durability  

DOE Green Energy (OSTI)

Hydrogen Internal Combustion Engine (HICE) technology takes advantage of existing knowledge of combustion engines to provide a means to power passenger vehicle with hydrogen, perhaps as an interim measure while fuel cell technology continues to mature. This project seeks to provide data to determine the reliability of these engines. Data were collected from an engine operated on a dynamometer for 1000 hours of continuous use. Data were also collected from a fleet of eight (8) full-size pickup trucks powered with hydrogen-fueled engines. In this particular application, the data show that HICE technology provided reliable service during the operating period of the project. Analyses of engine components showed little sign of wear or stress except for cylinder head valves and seats. Material analysis showed signs of hydrogen embrittlement in intake valves.

Garrett Beauregard

2010-12-31T23:59:59.000Z

23

HICEV AMERICA: HYDROGEN INTERNAL COMBUSTION ENGINE  

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

HICEV AMERICA: HICEV AMERICA: HYDROGEN INTERNAL COMBUSTION ENGINE VEHICLE (HICEV) TECHNICAL SPECIFICATIONS Revision 0 November 1, 2004 Prepared by Electric Transportation Applications HICEV America Vehicle Specification i TABLE OF CONTENTS Minimum Vehicle Requirements 1 1. Regulatory Requirements 7 2. Chassis 8 3. Vehicle Characteristics 10 4. Drive System 11 5. Vehicle Performance 12 6. Hydrogen Fuel Storage System (HFSS) 14 7. Additional Vehicle Systems 17 8. Documentation 18 Appendices Appendix A - Vehicle Data 19 Appendix B - FMVSS Certification Methodology 26 DB12/7/04 HICEV America Vehicle Specification 2 MINIMUM VEHICLE REQUIREMENTS The HICEV America Program is sponsored by the U.S. Department of Energy Office of Transportation Technology to provide for independent assessment of hydrogen fueled, internal

24

CSE - International Workshop on Photon Tools for Combustion and...  

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

International Workshop on Photon Tools for Combustion and Energy Conversion - Lodging GUEST HOUSE Argonne Guest House Please remember to make your lodging reservation directly...

25

CSE - International Workshop on Photon Tools for Combustion and...  

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

International Workshop on Photon Tools for Combustion and Energy Conversion Organizing Committee Robert S. Tranter, Co-chair (Argonne National Lab) Randall E. Winans, Co-chair...

26

Internal combustion engine using premixed combustion of stratified charges  

DOE Patents (OSTI)

During a combustion cycle, a first stoichiometrically lean fuel charge is injected well prior to top dead center, preferably during the intake stroke. This first fuel charge is substantially mixed with the combustion chamber air during subsequent motion of the piston towards top dead center. A subsequent fuel charge is then injected prior to top dead center to create a stratified, locally richer mixture (but still leaner than stoichiometric) within the combustion chamber. The locally rich region within the combustion chamber has sufficient fuel density to autoignite, and its self-ignition serves to activate ignition for the lean mixture existing within the remainder of the combustion chamber. Because the mixture within the combustion chamber is overall premixed and relatively lean, NO.sub.x and soot production are significantly diminished.

Marriott, Craig D. (Rochester Hills, MI); Reitz, Rolf D. (Madison, WI

2003-12-30T23:59:59.000Z

27

Hydrogen-fueled internal combustion engines.  

DOE Green Energy (OSTI)

The threat posed by climate change and the striving for security of energy supply are issues high on the political agenda these days. Governments are putting strategic plans in motion to decrease primary energy use, take carbon out of fuels and facilitate modal shifts. Taking a prominent place in these strategic plans is hydrogen as a future energy carrier. A number of manufacturers are now leasing demonstration vehicles to consumers using hydrogen-fueled internal combustion engines (H{sub 2}ICEs) as well as fuel cell vehicles. Developing countries in particular are pushing for H{sub 2}ICEs (powering two- and three-wheelers as well as passenger cars and buses) to decrease local pollution at an affordable cost. This article offers a comprehensive overview of H{sub 2}ICEs. Topics that are discussed include fundamentals of the combustion of hydrogen, details on the different mixture formation strategies and their emissions characteristics, measures to convert existing vehicles, dedicated hydrogen engine features, a state of the art on increasing power output and efficiency while controlling emissions and modeling.

Verhelst, S.; Wallner, T.; Energy Systems; Ghent Univ.

2009-12-01T23:59:59.000Z

28

Status of US Maglev Program  

SciTech Connect

Factors that have led to a reawakening of national interest in maglev technology in the United States are discussed. The development of the National Maglev program, its findings, and the four maglev design concepts resulting from the System Concept Definition study are reviewed. Technical requirements for the SCD contractors and for the Prototype Development Program are compared. Some legislative background information is given, with a review of the most important maglev legislation. Plans for the National Maglev Prototype Development Program are discussed, and activities related to maglev at Argonne National Laboratory are summarized.

Rote, D.M.

1993-11-01T23:59:59.000Z

29

Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode  

DOE Patents (OSTI)

This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.

Wagner, Robert M [Knoxville, TN; Daw, Charles S [Knoxville, TN; Green, Johney B [Knoxville, TN; Edwards, Kevin D [Knoxville, TN

2008-10-07T23:59:59.000Z

30

Modeling piston skirt lubrication in internal combustion engines  

E-Print Network (OSTI)

Ever-increasing demand for reduction of the undesirable emissions from the internal combustion engines propels broader effort in auto industry to design more fuel efficient engines. One of the major focuses is the reduction ...

Bai, Dongfang, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

31

Control of Combustion Processes in an Internal Combustion Engine by Low-Temperature Plasma  

Science Conference Proceedings (OSTI)

A new method of operation of internal combustion engines enhances power and reduces fuel consumption and exhaust toxicity. Low-temperature plasma control combines working processes of thermal engines and steam machines into a single process.

E. A. Olenev

2002-07-01T23:59:59.000Z

32

Publications on maglev technologies  

Science Conference Proceedings (OSTI)

Magnetically levitated passenger-transportation vehicles, using attractive and repulsive magnetic forces, are currently in the development or prototype-revenue stages in Japan and Germany. The basic principles of these technologies have been understood for several decades, but their practical applications awaited advances in high-power electronic devices, modern controls, superconducting magnets, and improvements in our transportation infrastructures. A considerable amount of work was devoted to magnetic-levitation (maglev) transportation system in the late 1960s and the 1970s. Detailed development was sustained primarily in Germany and Japan. This listing of publications was begun as the initial phase of a design study for a maglev development facility sponsored by the State of Illinois. The listing has been continually updated under programs sponsored by the Federal Railroad Administration and the US Army Corps of Engineers. In 1991, the National Maglev Initiative issued 27 contracts for the study of technical issues related to maglev and four contracts for the definition of maglev systems. In December 1991, the Intermodal Surface Transportation Efficiency Act was enacted, mandating the development of a US-designed maglev system in a six-year period. This listing is offered as an aid to those working on these projects, to help them locate technical papers on relevant technologies. The design and installation of a maglev transportation system will require the efforts of workers in many disciplines, from electronics to economics to safety. Accordingly, the references have been grouped in 14 different sections to expedite review of the listing. In many case, the references are annotated to indicate the general content of the papers. Abstracts are not available. A list of information services from which the listed documents might be obtained and an author index are provided.

He, J.L.; Coffey, H.T.; Rote, D.M.; Wang, Z.

1991-12-01T23:59:59.000Z

33

8th International symposium on transport phenomena in combustion  

DOE Green Energy (OSTI)

The 8th International Symposium on Transport Phenomena in Combustion will be held in San Francisco, California, U.S.A., July 16-20, 1995, under the auspices of the Pacific Center of Thermal-Fluids Engineering. The purpose of the Symposium is to provide a forum for researchers and practitioners from around the world to present new developments and discuss the state of the art and future directions and priorities in the areas of transport phenomena in combustion. The Symposium is the eighth in a series; previous venues were Honolulu 1985, Tokyo 1987, Taipei 1988, Sydney 1991, Beijing 1992, Seoul 1993 and Acapulco 1994, with emphasis on various aspects of transport phenomena. The current Symposium theme is combustion. The Symposium has assembled a balanced program with topics ranging from fundamental research to contemporary applications of combustion theory. Invited keynote lecturers will provide extensive reviews of topics of great interest in combustion. Colloquia will stress recent advances and innovations in fire spread and suppression, and in low NO{sub x} burners, furnaces, boilers, internal combustion engines, and other practical combustion systems. Finally, numerous papers will contribute to the fundamental understanding of complex processes in combustion. This document contains abstracts of papers to be presented at the Symposium.

NONE

1995-12-31T23:59:59.000Z

34

Hydrogen Internal Combustion Engine (ICE) Vehicle Testing Activities  

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

Internal Combustion Internal Combustion Engine (ICE) Vehicle Testing Activities James Francfort Idaho National Laboratory 2 Paper #2006-01-0433 Presentation Outline Background and goal APS Alternative Fuel (Hydrogen) Pilot Plant - design and operations Fuel dispensing and prototype dispenser Hydrogen (H2) and HCNG (compressed natural gas) internal combustion engine (ICE) vehicle testing WWW Information 3 Paper #2006-01-0433 Background Advanced Vehicle Testing Activity (AVTA) is part of DOE's FreedomCAR and Vehicle Technologies Program These activities are conducted by the Idaho National Laboratory (INL) and the AVTA testing partner Electric Transportation Applications (ETA) 4 Paper #2006-01-0433 AVTA Goal Provide benchmark data for technology modeling, research and development programs, and help fleet managers and

35

Alcohol fuel conversion apparatus for internal combustion engines  

Science Conference Proceedings (OSTI)

An alcohol fuel conversion apparatus is described for internal combustion engines comprising: fuel storage means containing an alcohol fuel; primary heat exchanger means in fluid communication with the fuel storage means for transferring heat to pressurized alcohol contained within the heat exchanger means; a heat source for heating the heat exchange means; pressure relief valve means, in closed fluid communication with the primary heat exchange means, operable to release heated pressurized alcohol into an expansion chamber; converter means, including the expansion chamber, in fluid communication with the pressure relief valve means for receiving the heated pressurized alcohol and for the vaporization of the alcohol; carburetor means in fluid communication with the converter means for metering and mixing vaporized alcohol with air for proper combustion and for feeding the mixture to an internal combustion engine; and pump means for pressurized pumping of alcohol from the fuel storage means to the heat exchanger means, converter means, carburetor means, and to the engine.

Carroll, B.I.

1987-01-13T23:59:59.000Z

36

High efficiency stoichiometric internal combustion engine system  

DOE Patents (OSTI)

A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

Winsor, Richard Edward (Waterloo, IA); Chase, Scott Allen (Cedar Falls, IA)

2009-06-02T23:59:59.000Z

37

Internal Combustion Engine Advances for Distributed Generation Markets  

Science Conference Proceedings (OSTI)

Internal combustion engines (ICEs) can play a potentially significant role as a distributed generation resource. This report provides intelligence on vendor programs and on advances in ICE technology that could lead to commercial offerings within a 2-5 year time frame.

1997-09-30T23:59:59.000Z

38

Fuel injector nozzle for an internal combustion engine  

DOE Green Energy (OSTI)

A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

Cavanagh, Mark S. (Bloomington, IL); Urven, Jr., Roger L. (Colona, IL); Lawrence, Keith E. (Peoria, IL)

2008-11-04T23:59:59.000Z

39

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

40

Modeling the lubrication of the piston ring pack in internal combustion engines using the deterministic method  

E-Print Network (OSTI)

Piston ring packs are used in internal combustion engines to seal both the high pressure gas in the combustion chamber and the lubricant oil in the crank case. The interaction between the piston ring pack and the cylinder ...

Chen, Haijie

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

Magnetic damping for maglev  

DOE Green Energy (OSTI)

Magnetic damping is one of the important parameters to control the response and stability of maglev systems. An experimental study is presented to measure the magnetic damping using a direct method. A plate attached to a permanent magnet levitated on a rotating drum was tested to investigate the effect of various parameters on magnetic damping such as conductivity, gap, excitation frequency, and oscillation amplitude. The experimental technique is capable of measuring all magnetic damping coefficients, some of which can not be measured by an indirect method.

Chen, S.S.; Zhu, S.; Cai, Y.; Rote, D.M. [Argonne National Lab., IL (United States). Energy Technology Div.

1994-12-31T23:59:59.000Z

42

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

DOE Green Energy (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

43

Maglev Wind Turbine Technologies | Open Energy Information  

Open Energy Info (EERE)

Maglev Wind Turbine Technologies Maglev Wind Turbine Technologies Jump to: navigation, search Name Maglev Wind Turbine Technologies Place Sierra Vista, Arizona Zip 85635 Sector Wind energy Product The new company employs magnetic levitation (Maglev) technology in its wind turbines, which it says will have a longer life span, be cheaper to build, and produce 1GW of energy each. References Maglev Wind Turbine Technologies[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Maglev Wind Turbine Technologies is a company located in Sierra Vista, Arizona . References ↑ "Maglev Wind Turbine Technologies" Retrieved from "http://en.openei.org/w/index.php?title=Maglev_Wind_Turbine_Technologies&oldid=348578"

44

Partially-Premixed Flames in Internal Combustion Engines  

DOE Green Energy (OSTI)

This was a joint university-industry research program funded by the Partnerships for the Academic-Industrial Research Program (PAIR). The research examined partially premixed flames in laboratory and internal combustion engine environments at Vanderbilt University, University of Michigan, and General Motors Research and Development. At Vanderbilt University, stretched and curved ''tubular'' premixed flames were measured in a unique optically accessible burner with laser-induced spontaneous Raman scattering. Comparisons of optically measured temperature and species concentration profiles to detailed transport, complex chemistry simulations showed good correspondence at low-stretch conditions in the tubular flame. However, there were significant discrepancies at high-stretch conditions near flame extinction. The tubular flame predictions were found to be very sensitive to the specific hydrogen-air chemical kinetic mechanism and four different mechanisms were compared. In addition, the thermo-diffusive properties of the deficient reactant, H2, strongly affected the tubular flame structure. The poor prediction near extinction is most likely due to deficiencies in the chemical kinetic mechanisms near extinction. At the University of Michigan, an optical direct-injected engine was built up for laser-induced fluorescence imaging experiments on mixing and combustion under stratified charge combustion conditions with the assistance of General Motors. Laser attenuation effects were characterized both experimentally and numerically to improve laser imaging during the initial phase of the gasoline-air mixture development. Toluene was added to the isooctane fuel to image the fuel-air equivalence ratio in an optically accessible direct-injected gasoline engine. Temperature effects on the toluene imaging of fuel-air equivalence ratio were characterized. For the first time, oxygen imaging was accomplished in an internal combustion engine by combination of two fluorescence trackers, toluene and 3-pentanone. With this method, oxygen, fuel and equivalence ratio were measured in the cylinder. At General Motors, graduate students from the University of Michigan and Vanderbilt University worked with GM researchers to develop high-speed imaging methods for optically accessible direct-injection engines. Spark-emission spectroscopy was combined with high-speed spectrally-resolved combustion imaging in a direct-injected engine.

Robert W. Pitz; Michael C. Drake; Todd D. Fansler; Volker Sick

2003-11-05T23:59:59.000Z

45

A coal-water slurry fueled internal combustion engine and method for operating same  

DOE Patents (OSTI)

An internal combustion engine fueled with a coal-water slurry is described. About 90 percent of the coal-water slurry charge utilized in the power cycle of the engine is directly injected into the main combustion chamber where it is ignited by a hot stream of combustion gases discharged from a pilot combustion chamber of a size less than about 10 percent of the total clearance volume of main combustion chamber with the piston at top dead center. The stream of hot combustion gases is provided by injecting less than about 10 percent of the total coal-water slurry charge into the pilot combustion chamber and using a portion of the air from the main combustion chamber that has been heated by the walls defining the pilot combustion chamber as the ignition source for the coal-water slurry injected into the pilot combustion chamber.

McMillian, M.H.

1992-12-31T23:59:59.000Z

46

Coal-water slurry fuel internal combustion engine and method for operating same  

SciTech Connect

An internal combustion engine fueled with a coal-water slurry is described. About 90 percent of the coal-water slurry charge utilized in the power cycle of the engine is directly injected into the main combustion chamber where it is ignited by a hot stream of combustion gases discharged from a pilot combustion chamber of a size less than about 10 percent of the total clearance volume of main combustion chamber with the piston at top dead center. The stream of hot combustion gases is provided by injecting less than about 10 percent of the total coal-water slurry charge into the pilot combustion chamber and using a portion of the air from the main combustion chamber that has been heated by the walls defining the pilot combustion chamber as the ignition source for the coal-water slurry injected into the pilot combustion chamber.

McMillian, Michael H. (Fairmont, WV)

1992-01-01T23:59:59.000Z

47

1 Copyright 2003 by ASME 17th International Conference on Fluidised Bed Combustion  

E-Print Network (OSTI)

1 Copyright © 2003 by ASME 17th FBC 17th International Conference on Fluidised Bed Combustion May COMBUSTION OF HIGH-PVC SOLID WASTE WITH HCl RECOVERY Loay Saeed, Antti Tohka, Ron Zevenhoven* Helsinki.zevenhoven@hut.fi * Corresponding author ABSTRACT A process for two-stage combustion of high-PVC solid waste with HCl recovery

Zevenhoven, Ron

48

Research on the Performance and Emission of a Port Fuel Injection Hydrogen Internal Combustion Engine  

Science Conference Proceedings (OSTI)

A 2.0L nature aspirate gasoline engine was modified to port fuel injection (PFI) hydrogen internal combustion engine (HICE) and a series dynamometer tests were carried out. The in-cylinder combustion process was analyzed, the performance, thermal efficiency ... Keywords: hydrogen ICE, performance, emission, combustion characteristics

Dawei Sun; Fushui Liu

2011-02-01T23:59:59.000Z

49

Research on the Performance and Emission of a Port Fuel Injection Hydrogen Internal Combustion Engine  

Science Conference Proceedings (OSTI)

A 2.0L nature aspirate gasoline engine was modified to port fuel injection (PFI) hydrogen internal combustion engine (HICE) and a series dynamometer tests were carried out. The in-cylinder combustion process was analyzed, the performance, thermal efficiency ... Keywords: hydrogen ICE, performance, emission, combustion characteristics

Dawei Sun; Fushui Liu

2010-12-01T23:59:59.000Z

50

Exhaust gas recirculation system for an internal combustion engine  

SciTech Connect

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

51

Water cooled scavenged crankcase type otto internal combustion engine  

Science Conference Proceedings (OSTI)

In a system for a water cooled scavenged crankcase type two-cycle internal combustion engine comprising: a heat reclaimation system for extracting heat from an engine jacket for heating water supplied form an add-on reservoir via a heat exchanger located within the engine cylinder cooling system, the water being subsequently additionally heated by an exhaust pipe type heat exchanger to a superheated steam state and thence conveyed by a conduit to a steam lubricator for adjustably conveying in variably timed spaced succession intervals of regulated droplets of high viscous oil, fortified with adde graphite and tallow enrichment lubricant ingredients, and thence conveying such by steam at atmospheric pressure into an intake manifold which receives a carbureted air/fuel mixture into the crankcase via a manually operated auxiliary air intake device and way check valve and fire screen, due to suction effect of the piston up stroke action of the piston during engine operation.

Bidwell, H.

1988-10-25T23:59:59.000Z

52

Multiple fuel supply system for an internal combustion engine  

DOE Patents (OSTI)

A multiple fuel supply or an internal combustion engine wherein phase separation of components is deliberately induced. The resulting separation permits the use of a single fuel tank to supply components of either or both phases to the engine. Specifically, phase separation of a gasoline/methanol blend is induced by the addition of a minor amount of water sufficient to guarantee separation into an upper gasoline phase and a lower methanol/water phase. A single fuel tank holds the two-phase liquid with separate fuel pickups and separate level indicators for each phase. Either gasoline or methanol, or both, can be supplied to the engine as required by predetermined parameters. A fuel supply system for a phase-separated multiple fuel supply contained in a single fuel tank is described.

Crothers, William T. (Sunol, CA)

1977-01-01T23:59:59.000Z

53

Anti-overrunning device for an internal combustion engine  

Science Conference Proceedings (OSTI)

An anti-overrunning device is described for an internal combustion engine, comprising: (a) a carburetor having a venture passage for a fuel and air mixture, (b) a throttle valve in the passage movable to open and closed positions to regulate the effective area of the passage, (c) an actuator including a diaphragm responsive to pneumatic pressure operatively connected to the throttle valve, (d) an inertial pump comprising a housing having a weighted diaphragm mounted on an engine and subject to engine vibrations to develop pneumatic pressure, the inertial pump having an outlet connection to the actuator, and (e) a vibration sensor valve interposed in the outlet connection between the inertial pump and the actuator responsive to excessive vibration of the engine to connect the pump pressure to the actuator to cause movement of the throttle valve in a closing direction to reduce the speed of the engine.

Sejimo, Y.; Tsubai, T.; Tobinai, T.

1989-03-07T23:59:59.000Z

54

Anti-overrunning device for an internal combustion engine  

SciTech Connect

An anti-overrunning device for an internal combustion engine is described, consisting of (a) a carburetor having a venturi passage for a fuel and air mixture, (b) a throttle valve in the passage movable to open and closed positions to regulate the effective area of the passage, (c) an actuator including a diaphragm responsive to pneumatic pressure operatively connected to the throttle valve, (d) an inertial pump comprising a housing having a weighted diaphragm mounted on an engine and subject to engine vibrations to develop pneumatic pressure, the inertial pump having an inlet to receive atmospheric air and an outlet connected to the actuator, and (e) a vibration sensor in communication with the inertial pump inlet responsive to excessive vibration of the engine to connect the inlet to atmosphere to initiate pumping air from the outlet to the actuator to cause movement of the actuator diaphragm and the throttle valve in a closing direction to reduce the speed of the engine.

Sejimo, Y.; Tsubai, T.; Tobinai, T.

1989-03-07T23:59:59.000Z

55

Automatic fault diagnosis of internal combustion engine based on spectrogram and artificial neural network  

Science Conference Proceedings (OSTI)

This paper presents a signal analysis technique for internal combustion (IC) engine fault diagnosis based on the spectrogram and artificial neural network (ANN). Condition monitoring and fault diagnosis of IC engine through acoustic signal analysis is ... Keywords: acoustic analysis, fault diagnosis, internal combustion engine

Sandeep Kumar Yadav; Prem Kumar Kalra

2010-04-01T23:59:59.000Z

56

Proceedings: 14th International Symposium on Management and Use of Coal Combustion Products (CCPs), Volume 1  

Science Conference Proceedings (OSTI)

International research interest in coal combustion product (CCP) use continues to grow, with promising prospects for avoiding disposal costs, reducing greenhouse gas emissions, and generating revenue from CCP sales. Topics discussed at the 14th International Symposium on Management and Use of Coal Combustion Products included fundamental research on CCP use, product marketing, applied research, CCP management and environmental issues, and commercial CCP applications.

2001-01-04T23:59:59.000Z

57

Proceedings: 14th International Symposium on Management and Use of Coal Combustion Products (CCPs): Volume 2  

Science Conference Proceedings (OSTI)

International research interest in coal combustion product (CCP) use continues to grow, with promising prospects for avoiding disposal costs, reducing greenhouse gas emissions, and generating revenue from CCP sales. Topics discussed at the 14th International Symposium on Management and Use of Coal Combustion Products included fundamental research on CCP use, product marketing, applied research, CCP management and environmental issues, and commercial CCP applications.

2001-01-04T23:59:59.000Z

58

Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency  

E-Print Network (OSTI)

thermal efficiency for electricity generation from combustible sources ( , or as a fraction of energy converted in the case of solar

DeFilippo, Anthony Cesar

2013-01-01T23:59:59.000Z

59

Traveling-Wave Thermoacoustic Engines With Internal Combustion  

DOE Patents (OSTI)

Thermoacoustic devices are disclosed wherein, for some embodiments, a combustion zone provides heat to a regenerator using a mean flow of compressible fluid. In other embodiments, burning of a combustible mixture within the combustion zone is pulsed in phase with the acoustic pressure oscillations to increase acoustic power output. In an example embodiment, the combustion zone and the regenerator are thermally insulated from other components within the thermoacoustic device.

Weiland, Nathan Thomas (Blacksburg, VA); Zinn, Ben T. (Atlanta, GA); Swift, Gregory William (Sante Fe, NM)

2004-05-11T23:59:59.000Z

60

Towards a detailed soot model for internal combustion engines  

Science Conference Proceedings (OSTI)

In this work, we present a detailed model for the formation of soot in internal combustion engines describing not only bulk quantities such as soot mass, number density, volume fraction, and surface area but also the morphology and chemical composition of soot aggregates. The new model is based on the Stochastic Reactor Model (SRM) engine code, which uses detailed chemistry and takes into account convective heat transfer and turbulent mixing, and the soot formation is accounted for by SWEEP, a population balance solver based on a Monte Carlo method. In order to couple the gas-phase to the particulate phase, a detailed chemical kinetic mechanism describing the combustion of Primary Reference Fuels (PRFs) is extended to include small Polycyclic Aromatic Hydrocarbons (PAHs) such as pyrene, which function as soot precursor species for particle inception in the soot model. Apart from providing averaged quantities as functions of crank angle like soot mass, volume fraction, aggregate diameter, and the number of primary particles per aggregate for example, the integrated model also gives detailed information such as aggregate and primary particle size distribution functions. In addition, specifics about aggregate structure and composition, including C/H ratio and PAH ring count distributions, and images similar to those produced with Transmission Electron Microscopes (TEMs), can be obtained. The new model is applied to simulate an n-heptane fuelled Homogeneous Charge Compression Ignition (HCCI) engine which is operated at an equivalence ratio of 1.93. In-cylinder pressure and heat release predictions show satisfactory agreement with measurements. Furthermore, simulated aggregate size distributions as well as their time evolution are found to qualitatively agree with those obtained experimentally through snatch sampling. It is also observed both in the experiment as well as in the simulation that aggregates in the trapped residual gases play a vital role in the soot formation process. (author)

Mosbach, Sebastian; Celnik, Matthew S.; Raj, Abhijeet; Kraft, Markus [Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (United Kingdom); Zhang, Hongzhi R. [Department of Chemical Engineering, University of Utah, 1495 East 100 South, Kennecott Research Building, Salt Lake City, UT 84112 (United States); Kubo, Shuichi [Frontier Research Center, Toyota Central R and D Labs., Inc., Nagakute, Aichi 480-1192 (Japan); Kim, Kyoung-Oh [Higashifuji Technical Center, Toyota Motor Corporation, Mishuku 1200, Susono, Shizuoka 480-1193 (Japan)

2009-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

MECH 410N Outline-2010.doc MECH 410N -Internal Combustion Engines  

E-Print Network (OSTI)

MECH 410N Outline-2010.doc 01/09/2010 MECH 410N - Internal Combustion Engines COURSE OUTLINE 1-IGNITION ENGINES 2.1. Air-Standard & Fuel-Air Cycle analysis 2.2. Performance Criteria 2.3. SI Engine Combustion 3.2. The Limited Pressure Cycle 3.3. The fuel-air cycle with complete combustion 3.4. Turbocharged

62

Evaluation and silicon nitride internal combustion engine components  

DOE Green Energy (OSTI)

The feasibility of silicon nitride (Si[sub 3]N[sub 4]) use in internal combustion engines was studied by testing three different components for wear resistance and lower reciprocating mass. The information obtained from these preliminary spin rig and engine tests indicates several design changes are necessary to survive high-stress engine applications. The three silicon nitride components tested were valve spring retainers, tappet rollers, and fuel pump push rod ends. Garrett Ceramic Components' gas-pressure sinterable Si[sub 3]N[sub 4] (GS-44) was used to fabricate the above components. Components were final machined from densified blanks that had been green formed by isostatic pressing of GS-44 granules. Spin rig testing of the valve spring retainers indicated that these Si[sub 3]N[sub 4] components could survive at high RPM levels (9,500) when teamed with silicon nitride valves and lower spring tension than standard titanium components. Silicon nitride tappet rollers showed no wear on roller O.D. or I.D. surfaces, steel axles and lifters; however, due to the uncrowned design of these particular rollers the cam lobes indicated wear after spin rig testing. Fuel pump push rod ends were successful at reducing wear on the cam lobe and rod end when tested on spin rigs and in real-world race applications.

Voldrich, W. (Allied-Signal Aerospace Co., Torrance, CA (United States). Garrett Ceramic Components Div.)

1992-04-01T23:59:59.000Z

63

CSE - International Workshop on Photon Tools for Combustion and...  

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

and other large light sources to energy conversion research -- particularly to combustion and the productionstorage of energy from novel sources. The inaugural meeting was...

64

CSE - International Workshop on Photon Tools for Combustion and...  

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

Combustion Chair: Randall E. Winans, Argonne National Laboratory 1:55 Organic Radicals in Pyrolysis of Furans and Biomass-Based Fuels Barney Ellison University of Boulder at...

65

Experimental Study of Air-Fuel Ratio Control Strategy for a Hydrogen Internal Combustion Engine  

Science Conference Proceedings (OSTI)

One of the most attractive combustive features for hydrogen fuel is its wide range of flammability. The wide flammability limits allow hydrogen engine to be operated at extremely lean air–fuel ratios compared to conventional fuels. Concepts for ... Keywords: Hydrogen internal combustion engine, Air/Fuel ratio, Control strategy

Zhong-yu Zhao; Fu-shui Liu

2010-11-01T23:59:59.000Z

66

Effects of lubricant viscosity and surface texturing on ring-pack performance in internal combustion engines  

E-Print Network (OSTI)

The piston ring-pack contributes approximately 25% of the mechanical losses in an internal combustion engine. Both lubricant viscosity and surface texturing were investigated in an effort to reduce this ring-pack friction ...

Takata, Rosalind (Rosalind Kazuko), 1978-

2006-01-01T23:59:59.000Z

67

Modeling the structural behavior of the piston rings under different boundary conditions in internal combustion engines  

E-Print Network (OSTI)

In the process of designing internal combustion engine, piston ring plays an important role in fulfilling the requirements of camber gas sealing, friction reduction and lubrication oil consumption. The goal of this thesis ...

Xu, Dian

2010-01-01T23:59:59.000Z

68

Numerical modeling of piston secondary motion and skirt lubrication in internal combustion engines  

E-Print Network (OSTI)

Internal combustion engines dominate transportation of people and goods, contributing significantly to air pollution, and requiring large amounts of fossil fuels. With increasing public concern about the environment and ...

McClure, Fiona

2007-01-01T23:59:59.000Z

69

Water distillation using waste engine heat from an internal combustion engine  

E-Print Network (OSTI)

To meet the needs of forward deployed soldiers and disaster relief personnel, a mobile water distillation system was designed and tested. This system uses waste engine heat from the exhaust flow of an internal combustion ...

Mears, Kevin S

2006-01-01T23:59:59.000Z

70

Materials Reliability Program: Aging Management Strategies for Westinghouse and Combustion Engineering PWR Internals (MRP-232)  

Science Conference Proceedings (OSTI)

This report summarizes the aging management strategy development for Westinghouse and Combustion Engineering (CE) reactor internals. This report provides the technical basis for the aging management requirements of Westinghouse and CE reactor internals in the Pressurized Water Reactor (PWR) internals I&E guidelines (MRP-227-Rev. 0).

2008-12-22T23:59:59.000Z

71

Research and development of hydrogen direct-injection internal combustion engine system  

Science Conference Proceedings (OSTI)

The research and development of hydrogen-internal combustion engine (ICE) system for heavy-duty trucks, with the goal of allowing carbon dioxide (CO2)-free operation in transportation department, has been carried out. The high-pressure hydrogen ... Keywords: NOx emission reduction, NOx storage reduction catalyst, carbon dioxide-free, direct injection, heavy-duty truck, high-pressure hydrogen injector, hydrogen, internal combustion engine

Yoshio Sato; Atsuhiro Kawamura; Tadanori Yanai; Kaname Naganuma; Kimitaka Yamane; Yasuo Takagi

2009-02-01T23:59:59.000Z

72

Numerical modeling of hydrogen-fueled internal combustion engines  

DOE Green Energy (OSTI)

The planned use of hydrogen as the energy carrier of the future introduces new challenges and opportunities, especially to the engine design community. Hydrogen is a bio-friendly fuel that can be produced from renewable resources and has no carbon dioxide combustion products; and in a properly designed ICE, almost zero NO{sub x} and hydrocarbon emissions can be achieved. Because of the unique properties of hydrogen combustion - in particular the highly wrinkled nature of the laminar flame front due to the preferential diffusion instability - modeling approaches for hydrocarbon gaseous fuels are not generally applicable to hydrogen combustion. This paper reports on the current progress to develop a engine design capability based on KIVA family of codes for hydrogen-fueled, spark-ignited engines in support of the National Hydrogen Program. A turbulent combustion model, based on a modified eddy-turnover model in conjunction with an intake flow valve model, is found to describe well the efficiency and NO{sub x} emissions of this engine satisfy the Equivalent Zero Emission Vehicle (EZEV) standard established by the California Resource Board. 26 refs., 10 figs., 1 tab.

Johnson, N.L.; Amsden, A.A.

1996-12-31T23:59:59.000Z

73

Dynamic stability experiment of Maglev systems  

DOE Green Energy (OSTI)

This paper presents dynamic stability experiments on maglev systems and compares with predictions calculated by a nonlinear dynamic computer code. Instabilities of an electrodynamic system (EDS)-type vehicle model were obtained from both experimental observations and computer simulations for a five-degree-of-freedom maglev vehicle moving on a guideway consisting of double L-shaped aluminum segments attached to a rotating wheel. The experimental and theoretical analyses developed in this study identify basic stability characteristics and future research needs of maglev systems.

Cai, Y.; Chen, S.S.; Zhu, S.; Rote, D.M.

1995-12-31T23:59:59.000Z

74

Modeling engine oil vaporization and transport of the oil vapor in the piston ring pack on internal combustion engines.  

E-Print Network (OSTI)

??A model was developed to study engine oil vaporization and oil vapor transport in the piston ring pack of internal combustion engines. With the assumption… (more)

Cho, Yeunwoo, 1973-

2004-01-01T23:59:59.000Z

75

http://rcc.its.psu.edu/hpc Simulation of In-Cylinder Processes in Internal Combustion Engines  

E-Print Network (OSTI)

http://rcc.its.psu.edu/hpc Simulation of In-Cylinder Processes in Internal Combustion Engines into clean and efficient turbulent combustion remains imperative. A single grand challenge was identified in a 2006 DOE workshop on clean and efficient combustion of 21st century transportation fuels [1]: "The

Bjørnstad, Ottar Nordal

76

"Optimization of efficiency of internal combustion engines via using  

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

Optimization of efficiency of internal combustion engines via using Optimization of efficiency of internal combustion engines via using spinning gas and non-spectroscopic method of determining gas constituents through rotation ..--.. Inventors Nathaniel Fisch, Vasily Geyko An important use of the disclosed approach is the improvement efficiency of thermal cycles and as result efficiency of engines. Different cycles and different ways of compression of spinning gas may be used to maximize possible efficiency gain. In conventional internal combustion engines, gas spinning is either not used at all or used only with the purpose of increasing turbulence and better mixing. In the disclosed method, gas rotation is used for energy storage, hence it allows an improvement in thermal cycle efficiency. To achieve significant effect related to

77

Review and status of maglev in the United States  

DOE Green Energy (OSTI)

This report contains a slide show on the status and future of Maglev type transportation systems in the United States.

Coffey, H.T.

1993-12-31T23:59:59.000Z

78

COMBUSTION  

E-Print Network (OSTI)

This document presents an overview of combustion as a waste management strategy in relation to the development of material-specific emission factors for EPA’s Waste Reduction Model (WARM). Included are estimates of the net greenhouse gas (GHG) emissions from combustion of most of the materials considered in WARM and several categories of mixed waste. 1. A SUMMARY OF THE GHG IMPLICATIONS OF COMBUSTION Combustion of municipal solid waste (MSW) results in emissions of CO 2 and N2O. Note that CO2 from combustion of biomass (such as paper products and yard trimmings) is not counted because it is biogenic (as explained in the Introduction & Overview chapter). WARM estimates emissions from combustion of MSW in waste-to-energy (WTE) facilities. WARM does not consider any recovery of materials from the MSW stream that may occur before MSW is delivered to the combustor. WTE facilities can be divided into three categories: (1) mass burn, (2) modular and (3) refusederived fuel (RDF). A mass burn facility generates electricity and/or steam from the combustion of

unknown authors

2012-01-01T23:59:59.000Z

79

Monitoring of some functional parameters for an internal-combustion engine  

Science Conference Proceedings (OSTI)

This work presents the achievement of a monitoring, recording, processing and interpretation concept, at laboratory scale, of some functional parameters for a spark-ignition engine, based on an electronic equipment, which measures the values of 17 parameters ... Keywords: cylinder, internal-combustion engine, pressure, sensors, speed

Sorin Ra?iu; Gabriel Nicolae Popa; Vasile Alexa

2008-11-01T23:59:59.000Z

80

Apparatus for improving gasoline comsumption, power and reducing emission pollutants of internal combustion engines  

Science Conference Proceedings (OSTI)

This patent describes an apparatus for improving performance and reducing fuel comsumption and emission pollutants from an internal combustion gasoline engine. This apparatus consists of: 1.) an internal combustion gasoline engine having, in part, an intake manifold and an exhaust manifold where the exhaust manifold is modified to include a manifold exhaust port; 2.) a modified internal combustion engine carburetor connected to the intake manifold on the engine; 3.) a positive crankcase ventilation valve (PCV) which has an input port conventionally connected to the internal combustion engine and also has a PCV output port; 4.) an automobile fuel pump having an input connected to a conventional fuel tank and having a fuel pump output port; 5.) a thermic reactor; 6.) a thermic reactor air cleaner pneumatically connected to the clean air input port on the thermic reactor; 7.) a catalytic gas injector; 8.) a fuel regulator/restrictor consisting of a solid block having a fuel pump input port and a carburetor output port.

Piedrafita, R.

1986-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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.


81

Developing an approach utilizing local deterministic analysis to predict the cycle friction of the piston ring-pack in internal combustion engines  

E-Print Network (OSTI)

Nowadays, a rapid growth of internal combustion (IC) engines is considered to be a major contributor to energy crisis. About 20% of the mechanical loss in internal combustion engines directly goes to the friction loss ...

Liu, Yang, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

82

The railplug: A new ignitor for internal combustion engines  

SciTech Connect

A miniaturized railgun, termed the {open_quotes}railplug,{close_quotes} has been developed for use as an ignitor of combustible mixtures in engines. The device drives a plasma armature in a multishot mode with the aim of creating a line-source for ignition rather than the point source provided by traditional spark plugs. Railplugs have been fabricated in both parallel rail and co-axial rail geometries. The railplug differs from most plasma armature railguns in two striking ways: (1) no fuse or pellet is used to initially establish the plasma (the armature is simply the arc created by a high-voltage pulse), and (2) it operates over a range of elevated pressures (up to 500 psi). Consequently, the railplug power supply must provide a high voltage spike to breakdown the gap between the rails followed by a sustaining voltage that supplies current to drive the arc down the rails. Conceptually, this is the equivalent of combining the electrostatic problem of a sparkplug with the electrodynamic one of a railgun. Two power supply options that do this are outlined, as well as details of railplug geometries. Successes to date have demonstrated the firing of plugs for over 10{sup 4} shots at delivered arc energies of 1 J per shot. Rep rates have been demonstrated up to 50 Hz.

Faidley, R.W.; Darden, M.H.; Weldon, W.F.

1995-01-01T23:59:59.000Z

83

Wavelet Analysis of Cycle-to-Cycle Pressure Variations in an Internal Combustion Engine  

E-Print Network (OSTI)

Using a continuous wavelet transform we have analyzed the cycle-to-cycle variations of pressure in an internal combustion engine. The time series of maximum pressure variations are examined for different loading and their wavelet power spectrum is calculated for each load. From the wavelet power spectrum we detected the presence of long, intermediate and short-term periodicities in the pressure signal. It is found that depending on the load, the long and intermediate-term periodicities may span several cycles, whereas the short-period oscillations tend to appear intermittently. Knowledge of these periodicities may be useful to develop effective control strategies for efficient combustion.

Asok K. Sen; Grzegorz Litak; Rodolfo Taccani; Robert Radu

2006-07-19T23:59:59.000Z

84

The effects of spark ignition parameters on the lean burn limit of natural gas combustion in an internal combustion engine  

E-Print Network (OSTI)

A full factorial experiment was conducted to determine the effects of internal combustion engine ignition parameters on the air-fuel ratio (A/F) lean limit of combustion with compressed natural gas (CNG). Spark electrical characteristics (voltage, current, power, energy and duration), electrode design, electrode gap and compression ratio were the control variables and A/F lean limit, fuel consumption and hydrocarbon and oxides of nitrogen emission concentrations were the response variables. Experiments were performed on a General Motors' 2.2 liter four cylinder engine. Spark electrical characteristics were varied by applying various primary voltages and secondary resistances to the production inductive ignition system, with the engine operating at two operating conditions, a light load and a road load, and with two compression ratios. Cylinder pressure data was acquired to quantify load and combustion stability. Spark electrical characteristics were acquired with a digital oscilloscope to quantify secondary spark electrical characteristics. The results indicated that the response variables were generally insensitive to all the control variables, except for compression ratio. However, contrary to the literature, the A/F lean limit and fuel efficiency degraded with a higher compression ratio. Single and multi-variant linear regressions were studied between the A/F lean limit and the spark electrical characteristics. The only statistically significant and notable finding was a multi-variant linear regression of the A/F lean limit to increasing spark duration and decreasing spark energy at the road load operating condition. Statistical significance of the effect of the ignition system control variables on the response variables was higher at the road load than the light load operating condition. Emissions responded as expected with the higher compression ratio.

Chlubiski, Vincent Daniel

1997-01-01T23:59:59.000Z

85

Method and apparatus for minimizing the fuel usage in an internal combustion engine  

SciTech Connect

An apparatus and method is disclosed for minimizing the fuel usage in an internal combustion engine. The subject invention is particularly adapted for use with an engine installation subject to varying loads and which includes a governor for varying fuel flow as a function of load. In operation, the combustibles in the exhaust gas of the engine is continuously monitored. The measured level of combustibles is then compared with a predetermined level corresponding to optimum efficiency. A controller is provided for varying the air/fuel ratio supplied to the engine for maximizing efficiency in correspondence with the preset level. By this arrangement, energy output is increased permitting the governor to further reduce fuel flow, thereby minimizing energy costs.

Smojven, R.R.

1984-09-18T23:59:59.000Z

86

Proceedings of the sixth international conference on fluidized bed combustion. Volume II. Technical sessions  

SciTech Connect

The Sixth International Conference on Fluidized Bed Combustion was held April 9-11, 1980, at the Atlanta Hilton, Atlanta, Georgia. It was sponsored by the US Department of Energy, the Electric Power Research Institute, the US Environmental Protection Agency, and the Tennessee Valley Authority. The papers covered recent developments in atmospheric and pressurized fluidized-bed combustion, especially the design, operation and control of pilot and demonstration plants. The cleanup of combustion products and the erosion, corrosion and fouling of gas turbines was emphasized also. Fifty-five papers from Volume 2 of the proceedings have been entered individually into EDB and ERA; five papers had been entered previously from other sources. (LTN)

none,

1980-08-01T23:59:59.000Z

87

Method for reducing peak phase current and decreasing staring time for an internal combustion engine having an induction machine  

DOE Patents (OSTI)

A method for reducing the starting time and reducing the peak phase currents for an internal combustion engine that is started using an induction machine starter/alternator. The starting time is reduced by pre-fluxing the induction machine and the peak phase currents are reduced by reducing the flux current command after a predetermined period of time has elapsed and concurrent to the application of the torque current command. The method of the present invention also provides a strategy for anticipating the start command for an internal combustion engine and determines a start strategy based on the start command and the operating state of the internal combustion engine.

Amey, David L. (Birmingham, MI); Degner, Michael W. (Farmington Hills, MI)

2002-01-01T23:59:59.000Z

88

Maglev guideway cost and construction schedule assessment  

SciTech Connect

A summary of construction cost and scheduling information is presented for four maglev guideway designs on an example route from Baltimore, MD to Newark, NJ. This work results from the National Maglev Initiative (NMI), a government-industry effort from 1989 to 1994. The system design concepts used as a basis for developing cost and construction scheduling information, were submitted by four industry consortia solely for this analysis, and represent their own unpublished designs. The detailed cost and construction schedule analyses cover the main guideway only. A summary estimate was made for stations, power distribution systems, maintenance facilities, and other types of infrastructure. The results of the analyses indicate a number of design aspects which must receive further consideration by future designers. These aspects will affect the practical and economic construction and long-term maintenance of a high-speed maglev guideway.

Plotkin, D.; Kim, S. [Army Construction Engineering Research Lab., Champaign, IL (United States)

1997-05-01T23:59:59.000Z

89

Internal combustion engine with rotary valve assembly having variable intake valve timing  

DOE Patents (OSTI)

An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.

Hansen, Craig N. (Eden Prairie, MN); Cross, Paul C. (Shorewood, MN)

1995-01-01T23:59:59.000Z

90

Proceedings of the Sixth International Conference on Fluidized Bed Combustion. Volume 1. Plenary sessions  

Science Conference Proceedings (OSTI)

The Sixth International Conference on Fluidized Bed Combustion was held at the Atlanta Hilton, Atlanta, Georgia, April 9-11, 1980. The papers in this volume involved presentation of the research and development programs of the US (US DOE, TVA, EPRI and US EPA), United Kingdom, Federal Republic of Germany and the People's Republic of China. Eight papers from Vol. 1 (Plenary Sessions) of the proceedings have been entered individually into EDB and ERA. (LTN)

none,

1980-08-01T23:59:59.000Z

91

Modeling engine oil vaporization and transport of the oil vapor in the piston ring pack on internal combustion engines  

E-Print Network (OSTI)

A model was developed to study engine oil vaporization and oil vapor transport in the piston ring pack of internal combustion engines. With the assumption that the multi-grade oil can be modeled as a compound of several ...

Cho, Yeunwoo, 1973-

2004-01-01T23:59:59.000Z

92

A comparison between direct spark ignition and prechamber ignition in an internal combustion engine  

DOE Green Energy (OSTI)

We simulated the flow field and flame propagation near top dead center in a generic large-bore internal combustion engine using the COYOTE computer program, which is based on the full Navier-Stokes equations for a fluid mixture. The combustion chamber is a right circular cylinder, and the main charge is uniformly premixed. The calculations are axisymmetric. The results illustrate the differences in flow patterns, flame propagation, and thermal NO production between ignition with a spark plug and with a small prechamber. In the spark-ignited case, the flame propagates away from the spark plug approximately as a segment of a spherical surface, just as expected. With the prechamber, a high speed jet of hot combustion products shoots into the main chamber, quickly producing a large flame sheet that spreads along the piston face. The prechamber run consumes all of the fuel in half the time required by the spark-ignited case. The two cases produce comparable amounts of thermal NO at the end of fuel combustion.

Cloutman, L.D.

1993-12-03T23:59:59.000Z

93

Workshop on technology issues of superconducting Maglev transportation systems  

DOE Green Energy (OSTI)

There exists a critical need in the United States to improve its ground transportation system. One suggested system that offers many advantages over the current transportation infrastructure is Maglev. Maglev represents the latest evolution in very high and speed ground transportation, where vehicles are magnetically levitated, guided, and propelled over elevated guideways at speeds of 300 miles per hour. Maglev is not a new concept but is, however, receiving renewed interest. The objective of this workshop was to further promote these interest by bringing together a small group of specialists in Maglev technology to discuss Maglev research needs and to identify key research issues to the development of a successful Maglev system. The workshop was organized into four sessions based on the following technical areas: Materials, Testing, and Shielding; Magnet Design and Cryogenic Systems; Propulsion and Levitation Systems; and, System Control and Integration.

Wegrzyn, J.E. (Brookhaven National Lab., Upton, NY (United States)); Shaw, D.T. (New York State Inst. of Superconductivity, Buffalo, NY (United States))

1991-09-27T23:59:59.000Z

94

Apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels  

DOE Patents (OSTI)

An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a "multiple map" engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

Heffel, James W. (Lake Matthews, CA); Scott, Paul B. (Northridge, CA); Park, Chan Seung (Yorba Linda, CA)

2011-11-01T23:59:59.000Z

95

Economics of electron beam and electrical discharge processing for post-combustion NO{sub x} control in internal combustion engines  

DOE Green Energy (OSTI)

This paper discusses the physics and chemistry of non-thermal plasma processing for post-combustion NO{sub x} control in internal combustion engines. A comparison of electron beam and electrical discharge processing is made regarding their power consumption, radical production, NO{sub x} removal mechanisms, and by-product formation. Pollution control applications present a good opportunity for transferring pulsed power techniques to the commercial sector. However, unless advances are made to drastically reduce the price and power consumption of electron beam sources and pulsed power systems, these plasma techniques will not become commercially competitive with conventional thermal or surface-catalytic methods.

Penetrante, B.M.

1993-08-02T23:59:59.000Z

96

The railplug: Development of a new ignitor for internal combustion engines. Final report  

DOE Green Energy (OSTI)

A three year investigation of a new type of ignitor for internal combustion engines has been performed using funds from the Advanced Energy Projects Program of The Basic Energy Sciences Division of the U.S. Department of Energy and with matching funding from Research Applications, Inc. This project was a spin-off of {open_quotes}Star Wars{close_quotes} defense technology, specifically the railgun. The {open_quotes}railplug{close_quotes} is a miniaturized railgun which produces a high velocity plume of plasma that is injected into the combustion chamber of an engine. Unlike other types of alternative ignitors, such as plasma jet ignitors, electromagnetic forces enhance the acceleration of the plasma generated by a railplug. Thus, for a railplug, the combined effects of electromagnetic and thermodynamic forces drive the plasma into the combustion chamber. Several engine operating conditions or configurations can be identified that traditionally present ignition problems, and might benefit from enhanced ignition systems. One of these is ultra-lean combustion in spark ignition (SI) engines. This concept has the potential for lowering emissions of NOx while simultaneously improving thermal efficiency. Unfortunately, current lean burn engines cannot be operated sufficiently lean before ignition related problems are encountered to offer any benefits. High EGR engines have similar potential for emissions improvement, but also experience similar ignition problems, particularly at idle. Other potential applications include diesel cold start, alcohol and dual fuel engines, and high altitude relight of gas turbines. The railplug may find application for any of the above. This project focused on three of these potential applications: lean burn SI engines, high EGR SI engines, and diesel cold start.

Matthews, R.D.; Nichols, S.P.; Weldon, W.F.

1994-11-29T23:59:59.000Z

97

Estimating the impact on fuel tax revenues from a changing light vehicle fleet with increased advanced internal combustion engine vehicles and electric vehicles.  

E-Print Network (OSTI)

??Advanced fuel economies in both traditional internal combustion engine vehicles (ICEs) and electric vehicles (EVs) have a strong influence on transportation revenue by reducing fuel… (more)

Hall, Andrea Lynn

2013-01-01T23:59:59.000Z

98

Apparatus for controlling the air-fuel ratio in an internal combustion engine  

Science Conference Proceedings (OSTI)

Apparatus for controlling the air-fuel ratio in an internal combustion engine to substantially maintain the ratio at a predetermined value while the engine is operating under various load conditions. The engine has a carburetor with an air passageway through which air is drawn into the engine. Fuel is supplied to the carburetor through a fuel system and mixed with air passing through the carburetor. The presence of oxygen in the combustion products, which is a function of the air-fuel ratio of the mixture, is sensed and a first electrical signal representative of the oxygen content is supplied. The first electrical signal is compared with a predetermined reference level which is a function of the predetermined value to produce a second electrical signal having first and second signal elements, a first signal element being produced when the air-fuel ratio of the mixture is greater than the predetermined level and a second signal element being produced when the ratio is less than the level. A control responsive to the second electrical signal supplies to an air metering unit a control signal by which the quantity of air introduced into the fuel system is controlled. A change in the control signal is produced whenever the second electrical signal has a transition from one signal element to the other thereby for the air metering unit to change the quantity of air introduced into the fuel system conduit by an amount necessary to substantially maintain the air-fuel ratio at the predetermined value.

Gantzert, T.R.; Hicks, D.L.; Lindberg, A.W.

1981-07-21T23:59:59.000Z

99

Alternative Fuel Pilot Plant & Hydrogen Internal Combustion Engine Vehicle Testing  

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

RESEARCH & DEVELOPMENT RESEARCH & DEVELOPMENT Science Arizona Public Service Alternative Fuel Pilot Plant & Hydrogen Internal Combustion Engine Vehicle Testing Alternative Fuel Pilot Plant The Arizona Public Service Alternative Fuel Pilot Plant is a model alternative fuel refueling system, dispensing hydrogen, compressed natural gas (CNG), and hydrogen/ CNG blends (HCNG). The plant is used daily to fuel vehicles operated in Arizona Public Service's fleet. Hydrogen Subsystem The plant's hydrogen system consists of production, compression, storage, and dispensing. The hydrogen produced is suitable for use in fuel cell-powered vehicles, for which the minimum hydrogen purity goal is 99.999%. Hydrogen is produced using an electrolysis process that separates water into hydrogen and oxygen. At present, the hydrogen is

100

NREL Showcases Hydrogen Internal Combustion Engine Bus, Helps DOE Set Standards for Outreach (Fact Sheet)  

SciTech Connect

This fact sheet describes the National Renewable Energy Laboratory's (NREL's) accomplishments in showcasing a Ford hydrogen-powered internal combustion engine (H2ICE) bus at The Taste of Colorado festival in Denver. NREL started using its U.S. Department of Energy-funded H2ICE bus in May 2010 as the primary shuttle vehicle for VIP visitors, members of the media, and new employees. In September 2010, NREL featured the bus at The Taste of Colorado. This was the first major outreach event for the bus. NREL's educational brochure, vehicle wrap designs, and outreach efforts serve as a model for other organizations with DOE-funded H2ICE buses. Work was performed by the Hydrogen Education Group and Market Transformation Group in the Hydrogen Technologies and Systems Center.

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

Analysis on driving forces of oil pumps for internal combustion engines  

Science Conference Proceedings (OSTI)

Measures to reduce friction losses for internal combustion engines have been promoted as a means to meet the recent socioeconomical demand for energy saving. This paper describes a unique study on oil pump driving forces as a part of such efforts. In this study, oil pump driving forces are divided into (1) pumping work, (2) gear intermeshing loss, (3) resistance by the viscosity of lubricating oil, (4) mechanical loss and (5) bearing friction loss. Individual driving forces have been analyzed by respective theories, which are synthesized into a theoretical equation. The comparison between the theoretically calculated values and measured values obtained by the tests has revealed that they are in good agreement, as being described in the text of the paper.

Baba, Y.; Hoshi, M.

1986-01-01T23:59:59.000Z

102

Fundamental limitations of non-thermal plasma processing for internal combustion engine NO{sub x} control  

DOE Green Energy (OSTI)

This paper discusses the physics and chemistry of non-thermal plasma processing for post-combustion NO{sub x} control in internal combustion engines. A comparison of electron beam and electrical discharge processing is made regarding their power consumption, radical production, NO{sub x} removal mechanisms, and by product formation. Can non-thermal deNO{sub x} operate efficiently without additives or catalysts? How much electrical power does it cost to operate? What are the by-products of the process? This paper addresses these fundamental issues based on an analysis of the electron-molecule processes and chemical kinetics.

Penetrante, B.M.

1993-08-19T23:59:59.000Z

103

Potential impact of high temperature superconductors on maglev transportation  

DOE Green Energy (OSTI)

This report describes the potential impact that high-temperature superconductors (HTSs) may have on transportation by magnetically levitated vehicles. It is not intended as a planning document, but rather as an overview of potential HTS applications to magnetic-levitation (maglev) transportation. The present maglev program in the United States is summarized, and the present status of development of HTSs is described. Areas identified for possible impact on maglev technology are (1) liquid-nitrogen-cooled levitation magnets, (2) magnetic-field shielding of the passenger compartment, (3) superconducting magnetic energy storage for wayside power, (4) superconducting bearings for flywheel energy storage for wayside power, (5) downleads to continuously powered liquid-helium-cooled levitation magnets, and (6) liquid-hydrogen-cooled levitation magnets and linear motor propulsion windings. Major technical issues that remain to be resolved for the use of HTSs in maglev applications include thermal magnetic stability, mechanical properties, and critical current density at liquid-nitrogen temperatures.

Hull, J.R.

1992-02-01T23:59:59.000Z

104

Preliminary design for a maglev development facility  

DOE Green Energy (OSTI)

A preliminary design was made of a national user facility for evaluating magnetic-levitation (maglev) technologies in sizes intermediate between laboratory experiments and full-scale systems. A technical advisory committee was established and a conference was held to obtain advice on the potential requirements of operational systems and how the facility might best be configured to test these requirements. The effort included studies of multiple concepts for levitating, guiding, and propelling maglev vehicles, as well as the controls, communications, and data-acquisition and -reduction equipment that would be required in operating the facility. Preliminary designs for versatile, dual 2-MVA power supplies capable of powering attractive or repulsive systems were developed. Facility site requirements were identified. Test vehicles would be about 7.4 m (25 ft) long, would weigh form 3 to 7 metric tons, and would operate at speeds up to 67 m/s (150 mph) on a 3.3-km (2.05-mi) elevated guideway. The facility would utilize modular vehicles and guideways, permitting the substitution of levitation, propulsion, and guideway components of different designs and materials for evaluation. The vehicle would provide a test cell in which individual suspension or propulsion components or subsystems could be tested under realistic conditions. The system would allow economical evaluation of integrated systems under varying weather conditions and in realistic geometries.

Coffey, H.T.; He, J.L.; Chang, S.L.; Bouillard, J.X.; Chen, S.S.; Cai, Y.; Hoppie, L.O.; Lottes, S.A.; Rote, D.M. [Argonne National Lab., IL (United States); Zhang, Z.Y. [Polytechnic Univ., Brooklyn, NY (United States); Myers, G.; Cvercko, A. [Sterling Engineering, Westchester, IL (United States); Williams, J.R. [Alfred Benesch and Co., Chicago, IL (United States)

1992-04-01T23:59:59.000Z

105

Evaluation and silicon nitride internal combustion engine components. Final report, Phase I  

DOE Green Energy (OSTI)

The feasibility of silicon nitride (Si{sub 3}N{sub 4}) use in internal combustion engines was studied by testing three different components for wear resistance and lower reciprocating mass. The information obtained from these preliminary spin rig and engine tests indicates several design changes are necessary to survive high-stress engine applications. The three silicon nitride components tested were valve spring retainers, tappet rollers, and fuel pump push rod ends. Garrett Ceramic Components` gas-pressure sinterable Si{sub 3}N{sub 4} (GS-44) was used to fabricate the above components. Components were final machined from densified blanks that had been green formed by isostatic pressing of GS-44 granules. Spin rig testing of the valve spring retainers indicated that these Si{sub 3}N{sub 4} components could survive at high RPM levels (9,500) when teamed with silicon nitride valves and lower spring tension than standard titanium components. Silicon nitride tappet rollers showed no wear on roller O.D. or I.D. surfaces, steel axles and lifters; however, due to the uncrowned design of these particular rollers the cam lobes indicated wear after spin rig testing. Fuel pump push rod ends were successful at reducing wear on the cam lobe and rod end when tested on spin rigs and in real-world race applications.

Voldrich, W. [Allied-Signal Aerospace Co., Torrance, CA (United States). Garrett Ceramic Components Div.

1992-04-01T23:59:59.000Z

106

Comparative evaluation of acoustical noise levels of Soleq Evcort EV and ICE (internal combustion engine) counterpart  

DOE Green Energy (OSTI)

The Idaho National Engineering Laboratory (INEL) evaluates Ev propulsion systems and components for the US Department of Energy (DOE) Electric and Hybrid Vehicle (EHV) Program. This paper describes an INEL study which compares the exterior and interior acoustic noise levels of an electric vehicle to its internal combustion engine (ICE) counterpart base vehicle, under various operating conditions. The electric vehicle was a converted 1988 Ford Escort station wagon, retrofitted with a DC electric powertrain developed by Soleq Corporation. A comparably-equipped gasoline-fueled ICE-powered Ford Escort station wagon provided the baseline acoustic noise levels with which to compare the electric vehicle. Measurements of the interior and exterior noise levels were obtained using a Bruel and Kjaer (B K) Type 2231 Modular Precision Sound Level Meter. The tests were conducted in accordance with applicable Society of Automotive Engineer's (SAE) standard practices at Chrysler's Arizona Proving Grounds in Wittmann, Arizona. The results indicate that radiated interior and exterior acoustic noise levels of the electric vehicle were noticeably quieter under acceleration and idly conditions. However, under constant speed operation the electric and the ICE exhibited essentially equivalent interior and exterior noise levels. 8 refs., 2 tabs.

MacDowall, R.D.

1990-01-01T23:59:59.000Z

107

Mixture of micronized coal powder with gaseous fuels for use in internal combustion engines  

DOE Patents (OSTI)

An improved fuel mixture for use in internal combustion engines is described. This fuel is an intimate mixture of micronized coal, having an average particle size of less than 100 microns, with a gaseous fuel selected from natural gas and coal-derived. The coal can be present from more than 0 percent to less than 100 percent, with generally the lower percentages being preferred. The addition of the coal to the gaseous fuel improves engine efficiency and power rating, and also decreases peak engine pressure allowing for higher compression ratios. An increase in the amount of the coal increases the oxides of sulfur while reducing the oxides of nitrogen in the exhaust. An increase in the amount of gas, on the other hand, increases the oxides of nitrogen but lowers oxides of sulfur. Accordingly, a preferred mixture will depend upon a particular application for the coal/gas fuel and thereby increases user fuel flexibility considerations. Modeling of the fuel mixture for use in a diesel engine is described. 3 figs., 3 tabs.

Carpenter, L.K.

1990-01-03T23:59:59.000Z

108

Multi-dimensional computation of compressible reacting flows through porous media to apply to Internal Combustion Engine simulation  

Science Conference Proceedings (OSTI)

In this work, a new multi-dimensional Finite Volume (FV) solver of partial differential equations (PDEs) for compressible and reacting flows through porous media has been developed. The solver makes use of a pseudo-staggered arrangement, in order to ... Keywords: CFD, Computational fluid dynamics, DPF, Diesel exhaust after-treatment simulation, Diesel particulate filters, ICE, Internal combustion engines, Numerical methods, Porous media solver

F. Piscaglia; A. Montorfano; A. Onorati

2010-10-01T23:59:59.000Z

109

Modeling the performance of the piston ring-pack with consideration of non-axisymmetric characteristics of the power cylinder system in internal combustion engines  

E-Print Network (OSTI)

The performance of the piston ring-pack is directly associated with the friction, oil consumption, wear, and blow-by in internal combustion engines. Because of non-axisymmetric characteristics of the power cylinder system, ...

Liu, Liang, 1971-

2005-01-01T23:59:59.000Z

110

COMBUSTION-GENERATED INDOOR AIR POLLUTION  

E-Print Network (OSTI)

Pollutants from Indoor Combustion Sources: I. Field Measure-Characteristics in Two Stage Combustion, paper presented atInternational) on Combustion, August, 1974, Tokyo, Japan. 8

Hollowell, C.D.

2011-01-01T23:59:59.000Z

111

NREL Showcases Hydrogen Internal Combustion Engine Bus, Helps DOE Set Standards for Outreach (Fact Sheet), Hydrogen and Fuel Cell Technical Highlights (HFCTH)  

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

557 * November 2010 557 * November 2010 NREL Showcases Hydrogen Internal Combustion Engine Bus, Helps DOE Set Standards for Outreach National Renewable Energy Laboratory (NREL) Teams: Hydrogen Education, Melanie Caton; Market Transformation, Michael Ulsh Accomplishment: NREL started using its Ford hydrogen-powered internal combustion engine (H 2 ICE) bus in May 2010 as the primary shuttle vehicle for VIP visitors, members of the media, and new employees. As the first national laboratory to receive such a bus, NREL

112

Running out of steam. Part III. Development blues. [Alternatives to automotive internal combustion engines  

SciTech Connect

The history is given of systems that have been looked upon alternately as either strong competitors or engineering curiosities in the revived search to replace the Otto-cycle power plant with a cleaner, more efficient, and equally reliable passenger car engine. These recent efforts are largely attempts to polish up old technologies that were around long before a single model-T rolled off Henry Ford's first assembly line. The first steam vehicle, for example, hit the road more than 200 years ago and over the years has undergone considerable refinement. But, in spite of this long history and with the exception of short bursts of enthusiasm, the development of a steam-powered passenger car has never been high on the automobile industry's list of priorities. Some clues are given as to why this is true and why a number of ''think tank'' reports published over the past few years on the future role of steam-driven cars have ranged from mildly optimistic to forthrightly pessimistic. Electric vehicles have had a somewhat parallel history. They were early competitors with the Otto engine, but, unlike the steam cars, they have never completely disappeared. Indeed, for some special uses, they have outperformed all varieties of internal combustion engines (I.C.E.). Further inroads into the Otto-cycle car market, however, depend upon improved car design and the advancement of battery technology, an area of research that has been painfully slow in yielding results. Were it not for the wide public interest in environmental and resource issues that has been translated into new laws dealing with air pollution and resource management, the auto industry would have been content to sit on its I.C.E. for some time to come.

Reitze, A.W. Jr.

1977-01-01T23:59:59.000Z

113

Using Biofuel Tracers to Study Alternative Combustion Regimes  

E-Print Network (OSTI)

1979. J.B. Heywood, Internal Combustion Engine Fundamentals.Ignition Engine with Optimal Combustion Control. ” US PatentIntroduction to Internal Combustion Engines (3rd Edition).

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

2006-01-01T23:59:59.000Z

114

Comparison of high-speed rail and maglev system costs  

SciTech Connect

This paper compares the two modes of transportation, and notes important similarities and differences in the technologies and in how they can be implemented to their best advantage. Problems with making fair comparisons of the costs and benefits are discussed and cost breakdowns based on data reported in the literature are presented and discussed in detail. Cost data from proposed and actual construction projects around the world are summarized and discussed. Results from the National Maglev Initiative and the recently-published Commercial Feasibility Study are included in the discussion. Finally, estimates will be given of the expected cost differences between HSR and maglev systems implemented under simple and complex terrain conditions. The extent to which the added benefits of maglev technology offset the added costs is examined.

Rote, D.M.

1998-07-01T23:59:59.000Z

115

Japanese industrial research on lean combustion: A case study: International Research Monitoring Program  

DOE Green Energy (OSTI)

In recent years, Japanese automakers have introduced a number of successful lean-combustion engines. These engines, in addition to the general expertise in building small cars, have made the Japanese automobiles into the gas mileage champions of the US market. The lean-combustion engines also provide very satisfactory performance and acceptable emissions. United States automakers and research managers, who were probably better informed about lean-combustion than the Japanese were, actively investigated lean-combustion but did not develop an engine. This report examines the basis for the Japanese innovations, the research that took the Japanese past the US state of the art to permit engine development. A preliminary review of recent (1980s) Japanese literature did not turn up strong evidence of new research activity in the lean-combustion area, but did provide background on new engines developed by several major manufacturers. The study was conducted solely through the Japanese and US published literature, with emphasis on early research conducted in the 1970s. This report presents an example of how Japanese research progress can be examined by reviewing the Japanese research literature. Although useful information was obtained by this method, it is still difficult to get a complete picture. When reviewing the literature, as was done for this report, one must remember that the marginal use of references by Japanese researchers obscures prior work, as does the tendency of the Japanese to publish several articles on similar or identical topics. 50 refs., 15 figs.

Hane, G.J.; Hutchinson, R.A.

1987-08-01T23:59:59.000Z

116

Vehicle/guideway interaction and ride comfort in maglev systems  

DOE Green Energy (OSTI)

The importance of vehicle/guideway dynamics in maglev systems is discussed. The particular interest associated with modeling vehicle guide-way interactions and explaining response characteristics of maglev systems for a multicar, multiload vehicle traversing on a single- or double-span flexible guideway are considered, with an emphasis on vehicle/guideway coupling effects, comparison of concentrated and distributed loads, and ride comfort. Coupled effects of vehicle/guideway interactions over a wide range of vehicle speeds with various vehicle and guideway parameters are investigated, and appropriate critical vehicle speeds or crossing frequencies are identified.

Cai, Y.; Chen, S.S.; Rote, D.M.; Coffey, H.T.

1993-10-01T23:59:59.000Z

117

On the wall jet from the ring crevice of an internal combustion engine  

DOE Green Energy (OSTI)

Numerical simulations and experiments of the jetting of gases from the ring crevices of a laboratory engine shortly after exhaust valve opening showed an unanticipated radial flow of the crevice gases into the main combustion chamber. We report well-resolved numerical simulations of a wall jet that show that this radial motion is driven by vorticity generation in the wall boundary layer and at the corner of the piston crown.

Cloutman, L.D. [Lawrence Livermore National Lab., CA (United States); Green, R.M. [Sandia National Labs., Livermore, CA (United States)

1996-05-01T23:59:59.000Z

118

Method and apparatus utilizing valve throttling and charge stratification in the operation of an internal combustion engine  

Science Conference Proceedings (OSTI)

In an internal combustion engine this patent describes means forming a combustion chamber, a spark plug in the chamber, a piston disposed in the chamber for reciprocable movement toward and away from the spark plug, a valve member, circular seat means for the valve member, means for varying the lift of the valve member, a generally cylindrical shroud corresponding generally to the size of the seat means. The cylindrical shroud is relieved only in the direction of the spark plug so that, when the valve member is moved relative to the shroud by the lift-varying means, a stratified mixture of air and fuel is directed toward the spark plug until the lift-varying means causes the valve member to pass beyond the shroud so that during the initial lift of the valve member the stratified air and fuel mixture is directed solely toward the spark plug until the valve member passes beyond the shroud and the air and fuel mixture is directed generally through a 360/sup 0/ arc after the valve member passes beyond the shroud, and means limiting the lift of the valve member so that it does not pass the shroud during lighter loads, whereby the air and fuel mixture is directed primarily toward the spark plug until the valve member passes beyond the shroud.

Burandt, C.O.

1988-02-16T23:59:59.000Z

119

Studying the Internal Ballistics of a Combustion Driven Potato Cannon using High-speed Video  

E-Print Network (OSTI)

A potato cannon was designed to accommodate several different experimental propellants and have a transparent barrel so the movement of the projectile could be recorded on high-speed video (at 2000 frames per second). Both combustion chamber and barrel were made of polyvinyl chloride (PVC). Five experimental propellants were tested: propane (C3H8), acetylene (C2H2), ethanol (C2H6O), methanol (CH4O), and butane (C4H10). The amount of each experimental propellant was calculated to approximate a stoichometric mixture and considering the Upper Flammability Limit (UFL) and the Lower Flammability Limit (LFL), which in turn were affected by the volume of the combustion chamber. Cylindrical projectiles were cut from raw potatoes so that there was an airtight fit, and each weighed 50 (+/- 0.5) grams. For each trial, position as a function of time was determined via frame by frame analysis. Five trials were taken for each experimental propellant and the results analyzed to compute velocity and acceleration as functions...

Courtney, E D S

2013-01-01T23:59:59.000Z

120

A retrospective survey of the use of laboratory tests to simulate internal combustion engine materials tribology problems  

DOE Green Energy (OSTI)

Progress in the Field of tribology strongly parallels, and has always been strongly driven by, developments and needs in transportation and related industries. Testing of candidate materials for internal combustion engine applications has historically taken several routes: (1) replacement of parts in actual engines subjected to daily use, (2) testing in special, instrumented test engines, (3) and simulative testing in laboratory tribometers using relatively simple specimens. The advantages and disadvantages of each approach are reviewed using historical examples. A four-decade, retrospective survey of the tribomaterials literature focused on the effectiveness of laboratory simulations for engine materials screening. Guidelines for designing and ducting successful tribology laboratory simulations will be discussed. These concepts were used to design a valve wear simulator at Oak Ridge National Laboratory.

Blau, P.J.

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

A research plan to study emissions from small internal combustion engines. Final report Sep 78-Sep 79  

SciTech Connect

The report examines some of the requirements for investigating the environmental status of small internal combustion (IC) engines. These engines range in size from 1.5 to 15 hp and power a variety of equipment operated by homeowners and industry. With EPA's general growing concern of identifying sources of potentially carcinogenic emissions, a possibility exists that these small IC engines are a problem source. Research to characterize emissions from IC engines has largely been limited to critical pollutants, even though the small IC engine is an incomplete combustor. It follows that some carcinogens and other hazardous compounds are probable. The basic requirements addressed in the report include analytical equipment, experimental systems design, and statistical experimental design.

Murrell, J.W.

1980-04-01T23:59:59.000Z

122

COMBUSTION OF COAL IN AN OPPOSED FLOW DIFFUSION BURNER  

E-Print Network (OSTI)

J.M. , liThe F1uidised Combustion of Coal," Sixteenth Sm osium {International} on Combustion, August 1976 (to beof Various Polymers Under Combustion Conditions," Fourteenth

Chin, W.K.

2010-01-01T23:59:59.000Z

123

Investigation of spark discharge processes and ignition systems for spark-ignited internal combustion engines  

E-Print Network (OSTI)

Spark ignition of the air-fuel mixture at the appropriate time is important for successful flame initiation and complete combustion thereafter without unnecessary emissions. The physical and chemical reactions taking place between the spark plug electrodes during spark delivery determine the intensity of the spark and subsequent flame initiation. The energy of spark and the duration of its delivery are dependent on the ignition system design. The characteristics of the spark plug determine the interaction of the spark with the air-fuel mixture. The compression pressure, combustion chamber temperature and mixture motion at the time of spark generation play a significant role in the flame initiation process. All of these parameters are responsible for the resulting spark discharge and flame initiation process. The objectives of this research include investigation of the different phases of spark discharge and development of a thermodynamic analysis to determine the rate of change of the spark kernel temperature with time during the initial phases of the spark discharge. The effect of spark energy delivery rate, heat transfer losses and mass entrainment on the spark kernel temperature was determined through the thermodynamic analysis. This research also includes an evaluation of the various types of conventional as well as high-energy ignition systems for lean burn engines. An experimental ignition system was constructed to determine the effect of ignition energy, spark plug electrode geometry and gas pressure on the characteristics of the spark discharge. Images of spark discharge were captured through photography using three different types of electrode geometries and also by varying the pressure and by changing the ignition energy using different condensers in the ignition system. Finally, the results of the thermodynamic analysis were compared with the results from the experiment.

Khare, Yogesh Jayant

2000-01-01T23:59:59.000Z

124

Proceedings: 15th International American Coal Ash Association Symposium on Management and Use of Coal Combustion Products (CCPs): Bu ilding Partnerships for Sustainability  

Science Conference Proceedings (OSTI)

The theme of the symposium is "building partnerships for sustainability." Topics discussed at the 15th International Symposium on Management and Use of CCPs included fundamental coal combustion product (CCP) use research, product marketing, applied research, CCP management and environmental issues, and commercial uses. There is a continuing international research interest in CCP use because of the prospects of avoiding disposal costs, reducing greenhouse gas emissions, and generating revenue from CCP sales.

2003-04-28T23:59:59.000Z

125

Proceedings: 15th International American Coal Ash Association Symposium on Management and Use of Coal Combustion Products (CCPs): Bu ilding Partnerships for Sustainability  

Science Conference Proceedings (OSTI)

Topics discussed at the 15th International American Coal Ash Association (ACAA) Symposium, "Management and Use of Coal Combustion Products (CCPs)," included fundamental CCP use, research, product marketing, applied research, CCP management and environmental issues, and commercial uses. There is a continuing international research interest in CCP use because of its commercial value and its environmental benefits, such as reducing greenhouse gas emissions, reducing landfill needs, and utilizing recycled ma...

2003-01-02T23:59:59.000Z

126

Study of Japanese electrodynamic-suspension maglev systems  

DOE Green Energy (OSTI)

This report presents the results of a study of the Japanese MLU magnetic-levitation (maglev) system. The development of the MLU system is reviewed, and the dynamic circuit model then is introduced and applied to the figure-eight-shaped null-flux coil suspension system. Three different types of figure-eight-shaped null-flux suspension systems are discussed in detail: (1) the figure-eight-shaped null-flux coil suspension system without cross-connection; (2) the combined suspension and guidance system; and (3) the combined propulsion, levitation, and guidance system. The electrodynamic-suspension maglev systems developed in Japan seem to be very promising and could result in a commercial application in the near future.

He, J.L.; Rote, D.M.; Coffey, H.T. [Argonne National Lab., IL (United States). Center for Transportation Research

1994-04-01T23:59:59.000Z

127

Corroboration of magnetic forces in US Maglev design  

DOE Green Energy (OSTI)

Four System Concept Definition (SCD) contractors to the National Maglev Initiative (NMI) developed conceptual designs of maglev systems in 1991--1992. The objective of the work reported here was to perform independent calculations of the magnetic forces and fields of these four systems to assess the reasonableness'' of the results presented to the government. Commercial computer software was used for computing forces in the system employing nonlinear ferromagnetic materials and for some calculations of induced eddy current effects in finite-sized systems. Other cases required the use of models developed at ANL and verified by experiment, or in a few cases, new computer programs that have not been validated by experiment. The magnetic forces calculated by the contractors were found to be credible in every case evaluated. The stray fields were also found to be in reasonable agreement with those calculated by the contractors, but, for lack of spice, are not reported here.

Coffey, H.; He, J.; Wang, Z.

1993-01-01T23:59:59.000Z

128

Corroboration of magnetic forces in US Maglev design  

DOE Green Energy (OSTI)

Four System Concept Definition (SCD) contractors to the National Maglev Initiative (NMI) developed conceptual designs of maglev systems in 1991--1992. The objective of the work reported here was to perform independent calculations of the magnetic forces and fields of these four systems to assess the ``reasonableness`` of the results presented to the government. Commercial computer software was used for computing forces in the system employing nonlinear ferromagnetic materials and for some calculations of induced eddy current effects in finite-sized systems. Other cases required the use of models developed at ANL and verified by experiment, or in a few cases, new computer programs that have not been validated by experiment. The magnetic forces calculated by the contractors were found to be credible in every case evaluated. The stray fields were also found to be in reasonable agreement with those calculated by the contractors, but, for lack of spice, are not reported here.

Coffey, H.; He, J.; Wang, Z.

1993-06-01T23:59:59.000Z

129

Maglev vehicles and superconductor technology: Integration of high-speed ground transportation into the air travel system  

SciTech Connect

This study was undertaken to (1) evaluate the potential contribution of high-temperature superconductors (HTSCs) to the technical and economic feasibility of magnetically levitated (maglev) vehicles, (2) determine the status of maglev transportation research in the United States and abroad, (3) identify the likelihood of a significant transportation market for high-speed maglev vehicles, and (4) provide a preliminary assessment of the potential energy and economic benefits of maglev systems. HTSCs should be considered as an enhancing, rather than an enabling, development for maglev transportation because they should improve reliability and reduce energy and maintenance costs. Superconducting maglev transportation technologies were developed in the United States in the late 1960s and early 1970s. Federal support was withdrawn in 1975, but major maglev transportation programs were continued in Japan and West Germany, where full-scale prototypes now carry passengers at speeds of 250 mi/h in demonstration runs. Maglev systems are generally viewed as very-high-speed train systems, but this study shows that the potential market for maglev technology as a train system, e.g., from one downtown to another, is limited. Rather, aircraft and maglev vehicles should be seen as complementing rather than competing transportation systems. If maglev systems were integrated into major hub airport operations, they could become economical in many relatively high-density US corridors. Air traffic congestion and associated noise and pollutant emissions around airports would also be reduced. 68 refs., 26 figs., 16 tabs.

Johnson, L.R.; Rote, D.M.; Hull, J.R.; Coffey, H.T.; Daley, J.G.; Giese, R.F.

1989-04-01T23:59:59.000Z

130

Investigation of a rotary valving system with variable valve timing for internal combustion engines: Final technical report  

DOE Green Energy (OSTI)

The objective of the program was to provide a functional demonstration of the Hansen Rotary Valving System with Variable Valve timing (HRVS/VVT), capable of throttleless inlet charge control, as an alternative to conventional poppet-valves for use in spark ignited internal combustion engines. The goal of this new technology is to secure benefits in fuel economy, broadened torque band, vibration reduction, and overhaul accessibility. Additionally, use of the variable valve timing capability to vary the effective compression ratio is expected to improve multi-fuel tolerance and efficiency. Efforts directed at the design of HRVS components proved to be far more extensive than had been anticipated, ultimately requiring that proof-trial design/development work be performed. Although both time and funds were exhausted before optical or ion-probe types of in-cylinder investigation could be undertaken, a great deal of laboratory data was acquired during the course of the design/development work. This laboratory data is the basis for the information presented in this Final Report.

Cross, P.C.; Hansen, C.N.

1994-11-18T23:59:59.000Z

131

COMBUSTION-GENERATED INDOOR AIR POLLUTION  

E-Print Network (OSTI)

x A Emission Characteristics in Two Stage Combustion. PaperInternational) on Combustion, Tokyo (August, 1974). Chang,fll , J I ___F J "J LBL-S9lS COMBUSTION-GENERATED INDOOR AIR

Hollowell, C.D.

2010-01-01T23:59:59.000Z

132

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

133

On the unsteady-motion theory of magnetic forces for maglev  

DOE Green Energy (OSTI)

Motion-dependent magnetic forces are the key elements in the study of magnetically levitated vehicle (maglev) system dynamics. This paper presents an experimental and analytical study that will enhance their understanding of the role of unsteady-motion-dependent magnetic forces and demonstrate an experimental technique that can be used to measure those unsteady magnetic forces directly. The experimental technique provides a useful tool to measure motion-dependent magnetic forces for the prediction and control of maglev systems.

Chen, S.S.; Zhu, S.; Cai, Y. [Argonne National Lab., IL (United States). Energy Technology Div.

1996-02-01T23:59:59.000Z

134

Combustibles Alternativos  

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

Combustibles Alternativos Dispensador de Combustible Alternativo Los combustibles alternativos estn derivados de otras fuentes adems del petrleo. Unos son producidos en el...

135

Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends  

Science Conference Proceedings (OSTI)

Hydrogen is an attractive fuel source not only because it is abundant and renewable but also because it produces almost zero regulated emissions. Internal combustion engines fueled by compressed natural gas (CNG) are operated throughout a variety of industries in a number of mobile and stationary applications. While CNG engines offer many advantages over conventional gasoline and diesel combustion engines, CNG engine performance can be substantially improved in the lean operating region. Lean operation has a number of benefits, the most notable of which is reduced emissions. However, the extremely low flame propagation velocities of CNG greatly restrict the lean operating limits of CNG engines. Hydrogen, however, has a high flame speed and a wide operating limit that extends into the lean region. The addition of hydrogen to a CNG engine makes it a viable and economical method to significantly extend the lean operating limit and thereby improve performance and reduce emissions. Drawbacks of hydrogen as a fuel source, however, include lower power density due to a lower heating value per unit volume as compared to CNG, and susceptibility to pre-ignition and engine knock due to wide flammability limits and low minimum ignition energy. Combining hydrogen with CNG, however, overcomes the drawbacks inherent in each fuel type. Objectives of the current study were to evaluate the feasibility of using blends of hydrogen and natural gas as a fuel for conventional natural gas engines. The experiment and data analysis included evaluation of engine performance, efficiency, and emissions along with detailed in-cylinder measurements of key physical parameters. This provided a detailed knowledge base of the impact of using hydrogen/natural gas blends. A four-stroke, 4.2 L, V-6 naturally aspirated natural gas engine coupled to an eddy current dynamometer was used to measure the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions in a reciprocating four stroke cycle engine. The test matrix varied engine load and air-to-fuel ratio at throttle openings of 50% and 100% at equivalence ratios of 1.00 and 0.90 for hydrogen percentages of 10%, 20% and 30% by volume. In addition, tests were performed at 100% throttle opening, with an equivalence ratio of 0.98 and a hydrogen blend of 20% to further investigate CO emission variations. Data analysis indicated that the use of hydrogen/natural gas fuel blend penalizes the engine operation with a 1.5 to 2.0% decrease in torque, but provided up to a 36% reduction in CO, a 30% reduction in NOX, and a 5% increase in brake thermal efficiency. These results concur with previous results published in the open literature. Further reduction in emissions can be obtained by retarding the ignition timing.

Kirby S. Chapman; Amar Patil

2007-06-30T23:59:59.000Z

136

CATALYZED COMBUSTION IN A FLAT PLATE BOUNDARY LAYER I. EXPERIMENTAL MEASUREMENTS AND COMPARISON WITH NUMERICAL CALCULATIONS  

E-Print Network (OSTI)

l~ Roberts, "Catathermal Combustion: A New Process for Lm'l-significant gas phase combustion is induced by the presenceInternational) on Combustion (to be published), The

Robben, R.

2010-01-01T23:59:59.000Z

137

THE COMBUSTION OF SOLVENT REPINED COAL IN AN OPPOSED FLOW DIFFUSION FLAME  

E-Print Network (OSTI)

pyrolysis of various polymers under combustion conditions.Fourteenth Symposium (International) on Combustion,The Combustion Institute Pittsburgh, 1177. Chin, W.K. and

Chin, W.K.

2011-01-01T23:59:59.000Z

138

CATALYZED COMBUSTION IN A FLAT PLATE BOUNDARY LAYER II. NUMERICAL CALCULATIONS  

E-Print Network (OSTI)

D.G. , Fourteenth Sympo- sium (International) on Combustion,The Combustion Institute, Pittsburgh, 107 (1973). Wilson,Program for Calculation of Combustion Reaction Equilibrium

Schefer, R.

2010-01-01T23:59:59.000Z

139

Preheated Combustion Air (International Fact Sheet), Energy Tips-Process Heating, Process Heating Tip Sheet #1c  

Science Conference Proceedings (OSTI)

This English/Chinese international tip sheet provides information for optimizing industrial process heating systems and includes measurements in metric units.

Not Available

2010-10-01T23:59:59.000Z

140

U.S. Department of Energy FreedomCar & Vehicle Technologies Program CARB Executive Order Exemption Process for a Hydrogen-fueled Internal Combustion engine Vehicle -- Status Report  

DOE Green Energy (OSTI)

The CARB Executive Order Exemption Process for a Hydrogen-fueled Internal Combustion Engine Vehicle was undertaken to define the requirements to achieve a California Air Resource Board Executive Order for a hydrogenfueled vehicle retrofit kit. A 2005 to 2006 General Motors Company Sierra/Chevrolet Silverado 1500HD pickup was assumed to be the build-from vehicle for the retrofit kit. The emissions demonstration was determined not to pose a significant hurdle due to the non-hydrocarbon-based fuel and lean-burn operation. However, significant work was determined to be necessary for Onboard Diagnostics Level II compliance. Therefore, it is recommended that an Experimental Permit be obtained from the California Air Resource Board to license and operate the vehicles for the durability of the demonstration in support of preparing a fully compliant and certifiable package that can be submitted.

Not Available

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

MN Center for Renewable Energy: Cellulosic Ethanol, Optimization of Bio-fuels in Internal Combustion Engines, & Course Development for Technicians in These Areas  

DOE Green Energy (OSTI)

This final report for Grant #DE-FG02-06ER64241, MN Center for Renewable Energy, will address the shared institutional work done by Minnesota State University, Mankato and Minnesota West Community and Technical College during the time period of July 1, 2006 to December 30, 2008. There was a no-cost extension request approved for the purpose of finalizing some of the work. The grant objectives broadly stated were to 1) develop educational curriculum to train technicians in wind and ethanol renewable energy, 2) determine the value of cattails as a biomass crop for production of cellulosic ethanol, and 3) research in Optimization of Bio-Fuels in Internal Combustion Engines. The funding for the MN Center for Renewable Energy was spent on specific projects related to the work of the Center.

John Frey

2009-02-22T23:59:59.000Z

142

ME 374C Combustion Engine Processes ABET EC2000 syllabus  

E-Print Network (OSTI)

ME 374C ­ Combustion Engine Processes Page 1 ABET EC2000 syllabus ME 374C ­ Combustion Engine combustion engines, fuels, carburetion, combustion, exhaust emissions, knock, fuel injection, and factors to an appropriate major sequence in engineering. Textbook(s): Internal Combustion Engines and Automotive Engineering

Ben-Yakar, Adela

143

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

144

Performance analysis of the combined EDS maglev propulsion, levitation, and guidance system  

DOE Green Energy (OSTI)

An analysis of the Japanese maglev system which uses only one set of coils in the guideway for combined levitation, propulsion, and guidance functions is presented in this paper. This preliminary study, using the dynamic circuit approach, indicates that the system is very promising.

He, J.L.; Coffey, H.T.; Rote, D.M.

1993-10-01T23:59:59.000Z

145

Assuring safety in high-speed magnetically levitated (maglev) systems : the need for a system safety approach  

E-Print Network (OSTI)

Magnetic levitation is a railway technology that enables vehicles to be magnetically suspended above their tracks. Although this technology is still under development, magnetically levitated (maglev) systems have great ...

Ota, Shuichiro Daniel

2008-01-01T23:59:59.000Z

146

Flexible system development strategies for the Chuo Shinkansen Maglev Project : dealing with uncertain demand and R&D outcomes  

E-Print Network (OSTI)

As a large-scale, long-term transportation project, the Chuo Shinkansen Maglev Project in Japan includes various uncertainties. Among them, two major uncertainties are identified in this thesis: the uncertainty of demand ...

Ishii, Masaki, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

147

DOE Hydrogen Analysis Repository: Future Fuel Cell and Internal...  

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

Future Fuel Cell and Internal Combustion Engine Automobile Technologies Project Summary Full Title: Future Fuel Cell and Internal Combustion Engine Automobile Technologies: A...

148

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

149

Predictive modeling of combustion processes  

E-Print Network (OSTI)

Recently, there has been an increasing interest in improving the efficiency and lowering the emissions from operating combustors, e.g. internal combustion (IC) engines and gas turbines. Different fuels, additives etc. are ...

Sharma, Sandeep, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

150

Computational Combustion  

DOE Green Energy (OSTI)

Progress in the field of computational combustion over the past 50 years is reviewed. Particular attention is given to those classes of models that are common to most system modeling efforts, including fluid dynamics, chemical kinetics, liquid sprays, and turbulent flame models. The developments in combustion modeling are placed into the time-dependent context of the accompanying exponential growth in computer capabilities and Moore's Law. Superimposed on this steady growth, the occasional sudden advances in modeling capabilities are identified and their impacts are discussed. Integration of submodels into system models for spark ignition, diesel and homogeneous charge, compression ignition engines, surface and catalytic combustion, pulse combustion, and detonations are described. Finally, the current state of combustion modeling is illustrated by descriptions of a very large jet lifted 3D turbulent hydrogen flame with direct numerical simulation and 3D large eddy simulations of practical gas burner combustion devices.

Westbrook, C K; Mizobuchi, Y; Poinsot, T J; Smith, P J; Warnatz, J

2004-08-26T23:59:59.000Z

151

A review of dynamic stability of repulsive-force maglev suspension systems  

DOE Green Energy (OSTI)

Vehicle dynamics and the need to satisfy ride quality requirements have long been recognized as crucial to the commercial success of passenger-carrying transportation systems. Design concepts for maglev systems are no exception. Early maglev investigators and designers were well aware of the importance of ride quality and took care to ensure that their designs would meet acceptable ride quality standards. In contrast, the dynamic stability of electrodynamic suspension (EDS) systems, which has obvious implications for system safety and cost as well as for ride quality, has not received nearly as much attention. Because of the well-known under-damped nature of EDS suspension systems and the observation of instabilities in laboratory-scale model systems, it is prudent to develop a better understanding of vehicle stability characteristics. The work reported in this was undertaken with the intention of summarizing information that has been accumulated worldwide and that is relevant to dynamic stability of repulsive-force maglev suspension systems, assimilating that information, and gaining an understanding of the factors that influence that stability. Included in the paper is a discussion and comparison of results acquired from some representative tests of large-scale vehicles on linear test tracks, together with analytical and laboratory-scale investigations of stability and dynamics of EDS systems. This paper will also summarize the R and D activities at Argonne National Laboratory (ANL) since 1991 to study the nature of the forces that are operative in an EDS system and the dynamic stability of such systems.

Cai, Y.; Rote, D.M.

1998-07-01T23:59:59.000Z

152

International Journal of Engineering & Technology IJET-IJENS Vol: 11 No: 03 7 Co-combustion of Biosolids with Wood Pellets in a  

E-Print Network (OSTI)

Abstract- Co-combustion of biosolids with coal or other biomass fuel can play a significant role in combustion facilities for energy production and waste management policy context. This paper presents the results of an experimental study to investigate the use of biosolids for cocombustion with wood pellets in a wood pellet stove. Fuel property, gas emissions and stove efficiency are compared. In regard to fuel properties, proximate analysis, ultimate analysis and heating values are determined and emissions of carbon monoxide (CO), nitrogen oxides (NOx) and sulphur dioxide (SO2) are measured and compared. Pilot scale combustion tests revealed that cocombustion of 10 % biosolids with 90% wood pellets resulted in successful combustion without any significant degradation of efficiency and emissions. Nitrogen oxides (NOx) emissions were found to be proportional with the N2 content in the fuel. Sulphur dioxide (SO2) emissions were negligible. Index Terms- Biosolids, co-combustion, wood pellet stove, performance and emissions.

Wood Pellet Stove; Murari Mohon Roy; Animesh Dutta; Kenny Corscadden; Peter Havard

2011-01-01T23:59:59.000Z

153

Engine spray combustion modeling using unified spray model with dynamic mesh refinement.  

E-Print Network (OSTI)

??The primary objective of this study is to improve the spray and combustion modeling of internal combustion engines using dynamic mesh refinement. The first part… (more)

Kolakaluri, Ravi

2009-01-01T23:59:59.000Z

154

Advanced Combustion  

Science Conference Proceedings (OSTI)

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

155

Pages that link to "Maglev Wind Turbine Technologies" | Open...  

Open Energy Info (EERE)

Policies International Clean Energy Analysis Low Emission Development Strategies Oil & Gas Smart Grid Solar U.S. OpenLabs Utilities Water Wind Page Actions View source History...

156

Method of combustion for dual fuel engine  

DOE Patents (OSTI)

Apparatus and a method of introducing a primary fuel, which may be a coal water slutty, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure.

Hsu, Bertrand D. (Erie, PA); Confer, Gregory L. (Erie, PA); Shen, Zujing (Erie, PA); Hapeman, Martin J. (Edinboro, PA); Flynn, Paul L. (Fairview, PA)

1993-12-21T23:59:59.000Z

157

Method of combustion for dual fuel engine  

DOE Patents (OSTI)

Apparatus and a method of introducing a primary fuel, which may be a coal water slurry, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure. 19 figures.

Hsu, B.D.; Confer, G.L.; Zujing Shen; Hapeman, M.J.; Flynn, P.L.

1993-12-21T23:59:59.000Z

158

NETL: Combustion Technologies  

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

Summary for the Combustion Program The Combustion Technologies Product promotes the advancement of coal combustion power generation for use in industrial, commercial, and utility...

159

COMBUSTION RESEARCH - FY-1979  

E-Print Network (OSTI)

Optical Measurement of Combustion Products by Zeeman Atomicand T. Hadeishi • . . • . • . • • . • Combustion Sources offrom Pulverized Coal Combustion J. Pennucci, R. Greif, F.

,

2012-01-01T23:59:59.000Z

160

Changes related to "Maglev Wind Turbine Technologies" | Open...  

Open Energy Info (EERE)

Policies International Clean Energy Analysis Low Emission Development Strategies Oil & Gas Smart Grid Solar U.S. OpenLabs Utilities Water Wind View New Pages Recent Changes All...

Note: This page contains sample records for the topic "internal combustion maglev" 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

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

162

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

163

Engine Valve Actuation For Combustion Enhancement  

DOE Patents (OSTI)

A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-stroke combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

Reitz, Rolf Deneys (Madison, WI); Rutland, Christopher J. (Madison, WI); Jhavar, Rahul (Madison, WI)

2004-05-18T23:59:59.000Z

164

Engine valve actuation for combustion enhancement  

DOE Patents (OSTI)

A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-strokes combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

Reitz, Rolf Deneys (Madison, WI); Rutland, Christopher J. (Madison, WI); Jhavar, Rahul (Madison, WI)

2008-03-04T23:59:59.000Z

165

Advanced Combustion  

Science Conference Proceedings (OSTI)

The activity reported in this presentation is to provide the mechanical and physical property information needed to allow rational design, development and/or choice of alloys, manufacturing approaches, and environmental exposure and component life models to enable oxy-fuel combustion boilers to operate at Ultra-Supercritical (up to 650{degrees}C & between 22-30 MPa) and/or Advanced Ultra-Supercritical conditions (760{degrees}C & 35 MPa).

Holcomb, Gordon R. [NETL

2013-03-11T23:59:59.000Z

166

A hybrid 2-zone/WAVE engine combustion model for simulating combustion instabilities during dilute operation  

Science Conference Proceedings (OSTI)

Internal combustion engines are operated under conditions of high exhaust gas recirculation (EGR) to reduce NO x emissions and promote enhanced combustion modes such as HCCI. However, high EGR under certain conditions also promotes nonlinear feedback between cycles, leading to the development of combustion instabilities and cyclic variability. We employ a two-zone phenomenological combustion model to simulate the onset of combustion instabilities under highly dilute conditions and to illustrate the impact of these instabilities on emissions and fuel efficiency. The two-zone in-cylinder combustion model is coupled to a WAVE engine-simulation code through a Simulink interface, allowing rapid simulation of several hundred successive engine cycles with many external engine parametric effects included. We demonstrate how this hybrid model can be used to study strategies for adaptive feedback control to reduce cyclic combustion instabilities and, thus, preserve fuel efficiency and reduce emissions.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL; Chakravarthy, Veerathu K [ORNL; Daw, C Stuart [ORNL; Green Jr, Johney Boyd [ORNL

2006-01-01T23:59:59.000Z

167

Simulation of lean premixed turbulent combustion  

E-Print Network (OSTI)

turbulent methane combustion. Proc. Combust. Inst. , 29:in premixed turbulent combustion. Proc. Combust. Inst. ,for zero Mach number combustion. Combust. Sci. Technol. ,

2008-01-01T23:59:59.000Z

168

Vehicle Technologies Office: Advanced Combustion Engines  

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

Combustion Engines Combustion Engines Improving the efficiency of internal combustion engines is one of the most promising and cost-effective near- to mid-term approaches to increasing highway vehicles' fuel economy. The Vehicle Technologies Office's research and development activities address critical barriers to commercializing higher efficiency, very low emissions advanced internal combustion engines for passenger and commercial vehicles. This technology has great potential to reduce U.S. petroleum consumption, resulting in greater economic, environmental, and energy security. Already offering outstanding drivability and reliability to over 230 million passenger vehicles, internal combustion engines have the potential to become substantially more efficient. Initial results from laboratory engine tests indicate that passenger vehicle fuel economy can be improved by more than up to 50 percent, and some vehicle simulation models estimate potential improvements of up to 75 percent. Advanced combustion engines can utilize renewable fuels, and when combined with hybrid electric powertrains could have even further reductions in fuel consumption. As the EIA reference case forecasts that by 2035, more than 99 percent of light- and heavy-duty vehicles sold will still have internal combustion engines, the potential fuel savings is tremendous.

169

TransRapid TR-07 maglev-spectrum magnetic field effects on daily pineal indoleamine metabolic rhythms in rodents  

SciTech Connect

This study examined the effects on pineal function of magnetic field (MF) exposures (ac and dc components) similar to those produced by the TransRapid TR-07 and other electromagnetic maglev systems (EMS). Rats were entrained to a light-dark cycle and then exposed to a continuous, or to an inverted, intermittent (on = 45 s, off = 15 s, induced current = 267 G/s) simulated multifrequency ac and dc magnetic field (MF) at 1 or 7 times the TR-07 maglev vehicle MF intensity for 2 hr. Other groups of rats were exposed to only the ac or the dc-component of the maglev MF. For comparison, one group was exposed to an inverted, intermittent 60-Hz MF. Each group was compared to an unexposed group of rats for changes in pineal melatonin and serotonin-N-acetyltransferase (NAT). MF exposures at an intensity equivalent to that produced by the TR-07 vehicle had no effect on melatonin or NAT compared with sham-exposed animals under any of the conditions examined. However, 7X TR-07-level continuous 2-h MF exposures significantly depressed pineal NAT by 45%. Pineal melatonin was also depressed 33--43% by a continuous 7X TR-07 MF exposure and 28% by an intermittent 60-Hz 850-mG MF, but the results were not statically significant. This study demonstrates that intermittent, combined ac and dc MFs similar to those produced by the TR-07 EMS maglev vehicle alter the normal circadian rhythm of pineal indoleamine metabolism. The pineal regulatory enzyme NAT was more sensitive to MF exposure than melatonin and may be a more desirable measure of the biological effects of MF exposure.

Groh, K.R.

1993-01-01T23:59:59.000Z

170

TransRapid TR-07 maglev-spectrum magnetic field effects on daily pineal indoleamine metabolic rhythms in rodents  

SciTech Connect

This study examined the effects on pineal function of magnetic field (MF) exposures (ac and dc components) similar to those produced by the TransRapid TR-07 and other electromagnetic maglev systems (EMS). Rats were entrained to a light-dark cycle and then exposed to a continuous, or to an inverted, intermittent (on = 45 s, off = 15 s, induced current = 267 G/s) simulated multifrequency ac and dc magnetic field (MF) at 1 or 7 times the TR-07 maglev vehicle MF intensity for 2 hr. Other groups of rats were exposed to only the ac or the dc-component of the maglev MF. For comparison, one group was exposed to an inverted, intermittent 60-Hz MF. Each group was compared to an unexposed group of rats for changes in pineal melatonin and serotonin-N-acetyltransferase (NAT). MF exposures at an intensity equivalent to that produced by the TR-07 vehicle had no effect on melatonin or NAT compared with sham-exposed animals under any of the conditions examined. However, 7X TR-07-level continuous 2-h MF exposures significantly depressed pineal NAT by 45%. Pineal melatonin was also depressed 33--43% by a continuous 7X TR-07 MF exposure and 28% by an intermittent 60-Hz 850-mG MF, but the results were not statically significant. This study demonstrates that intermittent, combined ac and dc MFs similar to those produced by the TR-07 EMS maglev vehicle alter the normal circadian rhythm of pineal indoleamine metabolism. The pineal regulatory enzyme NAT was more sensitive to MF exposure than melatonin and may be a more desirable measure of the biological effects of MF exposure.

Groh, K.R.

1993-06-01T23:59:59.000Z

171

Combustion Technologies Group  

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

Combustion Technologies Group Combustion research generates the fundamental physical and chemical knowledge on the interaction between flame and turbulence. Experimental and...

172

NETL: Combustion Technologies  

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

with Combustion A number of companies are participating in DOE's evaluation of Combustion Systems products. The list below gives you access to each participant company's home page....

173

E-Alerts: Combustion, engines, and propellants (reciprocation and rotating combustion engines). E-mail newsletter  

Science Conference Proceedings (OSTI)

Design, performance, and testing of reciprocating and rotating engines of various configurations for all types of propulsion. Includes internal and external combustion engines; engine exhaust systems; engine air systems components; engine structures; stirling and diesel engines.

NONE

1999-04-01T23:59:59.000Z

174

Effect of market fuel variation and cetane improvers on CAI combustion in a GDI engine  

E-Print Network (OSTI)

There is continued interest in improving the fuel conversion efficiency of internal combustion engines and simultaneously reducing their emissions. One promising technology is that of Controlled Auto Ignition (CAI) combustion. ...

Cedrone, Kevin David

2010-01-01T23:59:59.000Z

175

Transport Properties for Combustion Modeling  

E-Print Network (OSTI)

a critical role in combustion processes just as chemicalparameters are essential for combustion modeling; molecularwith Application to Combustion. Transport Theor Stat 2003;

Brown, N.J.

2010-01-01T23:59:59.000Z

176

Vehículos de Célula de Combustible  

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

de Clula de Combustible Vehculo de Clula de Combustible Honda Clarity FCX Los vehculos de clula de combustible (FCVs)tambin llamados de pila de combustibletienen el...

177

Combustion 2000  

SciTech Connect

This report is a presentation of work carried out on Phase II of the HIPPS program under DOE contract DE-AC22-95PC95144 from June 1995 to March 2001. The objective of this report is to emphasize the results and achievements of the program and not to archive every detail of the past six years of effort. These details are already available in the twenty-two quarterly reports previously submitted to DOE and in the final report from Phase I. The report is divided into three major foci, indicative of the three operational groupings of the program as it evolved, was restructured, or overtaken by events. In each of these areas, the results exceeded DOE goals and expectations. HIPPS Systems and Cycles (including thermodynamic cycles, power cycle alternatives, baseline plant costs and new opportunities) HITAF Components and Designs (including design of heat exchangers, materials, ash management and combustor design) Testing Program for Radiative and Convective Air Heaters (including the design and construction of the test furnace and the results of the tests) There are several topics that were part of the original program but whose importance was diminished when the contract was significantly modified. The elimination of the subsystem testing and the Phase III demonstration lessened the relevance of subtasks related to these efforts. For example, the cross flow mixing study, the CFD modeling of the convective air heater and the power island analysis are important to a commercial plant design but not to the R&D product contained in this report. These topics are of course, discussed in the quarterly reports under this contract. The DOE goal for the High Performance Power Plant System ( HIPPS ) is high thermodynamic efficiency and significantly reduced emissions. Specifically, the goal is a 300 MWe plant with > 47% (HHV) overall efficiency and {le} 0.1 NSPS emissions. This plant must fire at least 65% coal with the balance being made up by a premium fuel such as natural gas. To achieve these objectives requires a change from complete reliance of coal-fired systems on steam turbines (Rankine cycles) and moving forward to a combined cycle utilizing gas turbines (Brayton cycles) which offer the possibility of significantly greater efficiency. This is because gas turbine cycles operate at temperatures well beyond current steam cycles, allowing the working fluid (air) temperature to more closely approach that of the major energy source, the combustion of coal. In fact, a good figure of merit for a HIPPS design is just how much of the enthalpy from coal combustion is used by the gas turbine. The efficiency of a power cycle varies directly with the temperature of the working fluid and for contemporary gas turbines the optimal turbine inlet temperature is in the range of 2300-2500 F (1260-1371 C). These temperatures are beyond the working range of currently available alloys and are also in the range of the ash fusion temperature of most coals. These two sets of physical properties combine to produce the major engineering challenges for a HIPPS design. The UTRC team developed a design hierarchy to impose more rigor in our approach. Once the size of the plant had been determined by the choice of gas turbine and the matching steam turbine, the design process of the High Temperature Advanced Furnace (HITAF) moved ineluctably to a down-fired, slagging configuration. This design was based on two air heaters: one a high temperature slagging Radiative Air Heater (RAH) and a lower temperature, dry ash Convective Air Heater (CAH). The specific details of the air heaters are arrived at by an iterative sequence in the following order:-Starting from the overall Cycle requirements which set the limits for the combustion and heat transfer analysis-The available enthalpy determined the range of materials, ceramics or alloys, which could tolerate the temperatures-Structural Analysis of the designs proved to be the major limitation-Finally the commercialization issues of fabrication and reliability, availability and maintenance. The program that has s

A. Levasseur; S. Goodstine; J. Ruby; M. Nawaz; C. Senior; F. Robson; S. Lehman; W. Blecher; W. Fugard; A. Rao; A. Sarofim; P. Smith; D. Pershing; E. Eddings; M. Cremer; J. Hurley; G. Weber; M. Jones; M. Collings; D. Hajicek; A. Henderson; P. Klevan; D. Seery; B. Knight; R. Lessard; J. Sangiovanni; A. Dennis; C. Bird; W. Sutton; N. Bornstein; F. Cogswell; C. Randino; S. Gale; Mike Heap

2001-06-30T23:59:59.000Z

178

Solution Combustion Synthesis Impregnated Layer Combustion Synthesis is a Novel  

E-Print Network (OSTI)

Solution Combustion Synthesis Impregnated Layer Combustion Synthesis is a Novel Methodology Engineering University of Notre Dame University of Notre Dame #12;Outline: Overview of combustion synthesis Reaction system Combustion front analaysis Theoretical model results Conclusions Acknowledgements #12

Mukasyan, Alexander

179

CO2 Emissions from Fuel Combustion | Open Energy Information  

Open Energy Info (EERE)

CO2 Emissions from Fuel Combustion CO2 Emissions from Fuel Combustion Jump to: navigation, search Tool Summary Name: CO2 Emissions from Fuel Combustion Agency/Company /Organization: International Energy Agency Sector: Energy Topics: Baseline projection, GHG inventory Resource Type: Dataset, Publications Website: www.iea.org/co2highlights/co2highlights.pdf CO2 Emissions from Fuel Combustion Screenshot References: CO2 Emissions from Fuel Combustion[1] Overview "This annual publication contains: estimates of CO2 emissions by country from 1971 to 2008 selected indicators such as CO2/GDP, CO2/capita, CO2/TPES and CO2/kWh CO2 emissions from international marine and aviation bunkers, and other relevant information" Excel Spreadsheet References ↑ "CO2 Emissions from Fuel Combustion"

180

HYDROGEN ASSISTED DIESEL COMBUSTION.  

E-Print Network (OSTI)

??In this study, the effect of hydrogen assisted diesel combustion on conventional and advanced combustion modes was investigated on a DDC/VM Motori 2.5L, 4-cylinder, turbocharged,… (more)

Lilik, Gregory

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

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

182

Combustion oscillation control  

SciTech Connect

Premixing of fuel and air can avoid high temperatures which produce thermal NOx, but oscillating combustion must be eliminated. Combustion oscillations can also occur in Integrated Gasification Combined Cycle turbines. As an alternative to design or operating modifications, METC is investigating active combustion control (ACC) to eliminate oscillations; ACC uses repeated adjustment of some combustion parameter to control the variation in heat release that drives oscillations.

Richards, G.A.; Janus, M.C.

1996-12-31T23:59:59.000Z

183

Proceedings: Coal Combustion Workshop  

Science Conference Proceedings (OSTI)

The primary objective of the 2007 Coal Combustion workshop was to present a holistic view of the various combustion processes required for minimal emissions, peak performance, and maximum reliability in a coal-fired power plant. The workshop also defined needs for future RD in coal combustion technology.

2008-01-09T23:59:59.000Z

184

Modeling and Rendering Physically-Based Wood Combustion  

Science Conference Proceedings (OSTI)

Rendering of wood combustion has received some attention recently, but prior work has not incorporated effects of internal wood properties such as density variation (i.e. "grain") and pre-combustion processes such as drying. In this paper we present ...

Roderick M. Riensche; Robert R. Lewis

2009-11-01T23:59:59.000Z

185

Table 8.5a Consumption of Combustible Fuels for Electricity ...  

U.S. Energy Information Administration (EIA)

Wood 8: Waste 9: Short Tons: Barrels: Short Tons: Barrels: Thousand Cubic Feet: ... For 1949–1979, data are for gas turbine and internal combustion plant use of ...

186

Table 8.5b Consumption of Combustible Fuels for Electricity ...  

U.S. Energy Information Administration (EIA)

Wood 8: Waste 9: Thousand Short Tons: Thousand Barrels: Thousand Short Tons: ... For 1949-1979, data are for gas turbine and internal combustion plant use of petroleum.

187

Table 8.5a Consumption of Combustible Fuels for Electricity ...  

U.S. Energy Information Administration (EIA)

Wood 8: Waste 9: Thousand Short Tons: Thousand Barrels: Thousand Short Tons: ... For 1949-1979, data are for gas turbine and internal combustion plant use of petroleum.

188

Table 8.5a Consumption of Combustible Fuels for Electricity ...  

U.S. Energy Information Administration (EIA)

For 1949–1979, data are for gas turbine and internal combustion plant use of petroleum. For 1980–2000, ... 8 Wood and wood-derived fuels.

189

Boiler using combustible fluid  

DOE Patents (OSTI)

A fluid fuel boiler is described comprising a combustion chamber, a cover on the combustion chamber having an opening for introducing a combustion-supporting gaseous fluid through said openings, means to impart rotation to the gaseous fluid about an axis of the combustion chamber, a burner for introducing a fluid fuel into the chamber mixed with the gaseous fluid for combustion thereof, the cover having a generally frustro-conical configuration diverging from the opening toward the interior of the chamber at an angle of between 15/sup 0/ and 55/sup 0/; means defining said combustion chamber having means defining a plurality of axial hot gas flow paths from a downstream portion of the combustion chamber to flow hot gases into an upstream portion of the combustion chamber, and means for diverting some of the hot gas flow along paths in a direction circumferentially of the combustion chamber, with the latter paths being immersed in the water flow path thereby to improve heat transfer and terminating in a gas outlet, the combustion chamber comprising at least one modular element, joined axially to the frustro-conical cover and coaxial therewith. The modular element comprises an inner ring and means of defining the circumferential, radial, and spiral flow paths of the hot gases.

Baumgartner, H.; Meier, J.G.

1974-07-03T23:59:59.000Z

190

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

191

Advanced Vehicle Testing Activity: Hydrogen Internal Combustion...  

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

blends in real time and delivers 15, 20, 30 and 50% hydrogen and compressed natural gas (CNG), can be found in Hydrogen, CNG, and HCNG Dispenser System - Prototype Report (PDF 409...

192

Advanced Vehicle Testing Activity- Hydrogen Internal Combustion...  

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

Applications (ETA) to construct and operate a hydrogen and compressed natural gas (HCNG) generation and fueling facility in Phoenix, Arizona. The HCNG facility provides pure...

193

Advanced Vehicle Testing Activity: Hydrogen Internal Combustion...  

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

is that they can run on pure hydrogen or a blend of hydrogen and compressed natural gas (CNG). That fuel flexibility is very attractive as a means of addressing the widespread lack...

194

Combustion Analysis Software Package for Internal ...  

Technology Marketing Summary. Researchers at the Colorado State University Engines and Energy Conversion Laboratory have developed a complete software ...

195

Advanced Vehicle Testing Activity: Hydrogen Internal Combustion...  

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

F-150 16V Hydrogen ICE Conversion - Testing Results (PDF 110 KB) 2003 Ford F-150 Pickup Truck Ford F-150 HydrogenCNG Blended Fuels Performance Testing in a Ford F-150 (up to 30%...

196

Precision Combustion, Inc  

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

Developing Reliable, Cost Effective Fuel Processors. Abstract: Precision Combustion, Inc. (PCI) is developing ultra-compact Fuel Processing systems for a range of Fuel Cells and...

197

Low NOx combustion  

DOE Patents (OSTI)

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

198

Low NOx combustion  

DOE Patents (OSTI)

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

199

Light Duty Efficient, Clean Combustion  

SciTech Connect

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.

Donald Stanton

2010-12-31T23:59:59.000Z

200

Light Duty Efficient, Clean Combustion  

DOE Green Energy (OSTI)

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.

Donald Stanton

2010-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

Light Duty Efficient, Clean Combustion  

SciTech Connect

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy’s Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: 1. Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today’s state-ofthe- art diesel engine on the FTP city drive cycle 2. Develop & design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements. 3. Maintain power density comparable to that of current conventional engines for the applicable vehicle class. 4. Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: ? A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target ? An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system ? Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system ? Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle – Additional technical barriers exist for the no NOx aftertreatment engine ? Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated. ? The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing. ? The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment. ? The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment ? Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines) ? Key subsystems developed include – sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light- Duty Vehicles (ATP-LD) started in 2010.

Stanton, Donald W

2011-06-03T23:59:59.000Z

202

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

Science Conference Proceedings (OSTI)

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

203

Past experiences with automotive external combustion engines  

SciTech Connect

GMR (General Motors Research Laboratories, now GM R and D Center) has a history of improving the internal combustion engine, especially as it relates to automotive use. During the quarter century from 1950--75, considerable effort was devoted to evaluating alternative powerplants based on thermodynamic cycles different from those on which the established spark-ignition and diesel engines are founded. Two of these, the steam engine and the Stirling engine, incorporated external combustion. Research on those two alternatives is reviewed. Both were judged to fall short of current needs for commercial success as prime movers for conventional automotive vehicles.

Amann, C.A.

1999-07-01T23:59:59.000Z

204

COMBUSTION SOURCES OF NITROGEN COMPOUNDS  

E-Print Network (OSTI)

Rasmussen, R.A. (1976). Combustion as a source of nitrousx control for stationary combustion sources. Prog. Energy,CA, March 3-4, 1977 COMBUSTION SOURCES OF NITROGEN COMPOUNDS

Brown, Nancy J.

2011-01-01T23:59:59.000Z

205

Fifteenth combustion research conference  

Science Conference Proceedings (OSTI)

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

206

Transport Properties for Combustion Modeling  

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

Transport Properties for Combustion Modeling Title Transport Properties for Combustion Modeling Publication Type Journal Article Year of Publication 2011 Authors Brown, Nancy J.,...

207

Recrutement d'un assistant mandat (F/H) au sein de l'Universit de Mons -Facult Polytechnique -Service de Thermique et Combustion  

E-Print Network (OSTI)

- Service de Thermique et Combustion N° de l'offre: UMONS/: 36 Avis interne Avis externeAvis interne/externe au sein de: Faculté Polytechnique Thermique et Combustion L'Université de Mons recrute un doctorat dans le domaine de combustion. Participation à l'encadrement des étudiants (exercices et travaux

Dupont, Stéphane

208

Computation of azimuthal combustion instabilities in an helicopter combustion chamber  

E-Print Network (OSTI)

Computation of azimuthal combustion instabilities in an helicopter combustion chamber C. Sensiau to compute azimuthal combustion instabilities is presented. It requires a thermoacoustic model using a n - formulation for the coupling between acoutics and combustion. The parameters n and are computed from a LES

Nicoud, Franck

209

Theoretical studies on hydrogen ignition and droplet combustion  

E-Print Network (OSTI)

1.2 Droplet Combustion . . . . . . . . . . . . .Combustion . . . . . . . . . . . . . . . . . . . . . . . . . .Lewis, B. and von Elbe, G. Combustion, Flames and Explosions

Del Álamo, Gonzalo

2006-01-01T23:59:59.000Z

210

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

211

Gas turbine combustion instability  

DOE Green Energy (OSTI)

Combustion oscillations are a common problem in development of LPM (lean premix) combustors. Unlike earlier, diffusion style combustors, LPM combustors are especially susceptible to oscillations because acoustic losses are smaller and operation near lean blowoff produces a greater combustion response to disturbances in reactant supply, mixing, etc. In ongoing tests at METC, five instability mechanisms have been identified in subscale and commercial scale nozzle tests. Changes to fuel nozzle geometry showed that it is possible to stabilize combustion by altering the timing of the feedback between acoustic waves and the variation in heat release.

Richards, G.A.; Lee, G.T.

1996-09-01T23:59:59.000Z

212

A combustion model for IC engine combustion simulations with multi-component fuels  

Science Conference Proceedings (OSTI)

Reduced chemical kinetic mechanisms for the oxidation of representative surrogate components of a typical multi-component automotive fuel have been developed and applied to model internal combustion engines. Starting from an existing reduced mechanism for primary reference fuel (PRF) oxidation, further improvement was made by including additional reactions and by optimizing reaction rate constants of selected reactions. Using a similar approach to that used to develop the reduced PRF mechanism, reduced mechanisms for the oxidation of n-tetradecane, toluene, cyclohexane, dimethyl ether (DME), ethanol, and methyl butanoate (MB) were built and combined with the PRF mechanism to form a multi-surrogate fuel chemistry (MultiChem) mechanism. The final version of the MultiChem mechanism consists of 113 species and 487 reactions. Validation of the present MultiChem mechanism was performed with ignition delay time measurements from shock tube tests and predictions by comprehensive mechanisms available in the literature. A combustion model was developed to simulate engine combustion with multi-component fuels using the present MultiChem mechanism, and the model was applied to simulate HCCI and DI engine combustion. The results show that the present multi-component combustion model gives reliable performance for combustion predictions, as well as computational efficiency improvements through the use of reduced mechanism for multi-dimensional CFD simulations. (author)

Ra, Youngchul; Reitz, Rolf D. [Engine Research Center, University of Wisconsin-Madison (United States)

2011-01-15T23:59:59.000Z

213

Photo of Spray Combustion Chamber  

Science Conference Proceedings (OSTI)

NIST Spray Combustion Chamber. NIST, National Institute of Standards and Technology, Material Measurement Laboratory, ...

2013-07-15T23:59:59.000Z

214

Four Lectures on Turbulent Combustion  

E-Print Network (OSTI)

Four Lectures on Turbulent Combustion N. Peters Institut f¨ur Technische Mechanik RWTH Aachen Turbulent Combustion: Introduction and Overview 1 1.1 Moment Methods in Modeling Turbulence with Combustion and Velocity Scales . . . . . . . . . . . 11 1.4 Regimes in Premixed Turbulent Combustion

Peters, Norbert

215

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

216

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

217

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.

218

IN SITU COMBUSTION  

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

a combustion zone that moves through the formation toward production wells, providing a steam drive and an intense gas drive for the recovery of oil. This process is sometimes...

219

NETL: Combustion Technologies  

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

Combustion Technology (June 15-16, 1999) Animal Waste Remediation Roundtable PDF-78KB Advanced Coal-Based Power and Environmental Systems '98 Conference (July 21-23, 1998)...

220

Just the Basics: Combustion  

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

diesel fuel, transportation- based combustion accounts for the majority of our fossil fuel use in the United States, which has led the U.S. to demand a lot of imported oil....

Note: This page contains sample records for the topic "internal combustion maglev" 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

Pulsed jet combustion generator for premixed charge engines  

DOE Patents (OSTI)

A method and device for generating pulsed jets which will form plumes comprising eddie structures, which will entrain a fuel/air mixture from the head space of an internal combustion engine, and mixing this fuel/air mixture with a pre-ignited fuel/air mixture of the plumes thereby causing combustion of the reactants to occur within the interior of the eddie structures.

Oppenheim, A. K. (Berkeley, CA); Stewart, H. E. (Alameda, CA); Hom, K. (Hercules, CA)

1990-01-01T23:59:59.000Z

222

METC Combustion Research Facility  

SciTech Connect

The objective of the Morgantown Energy Technology Center (METC) high pressure combustion facility is to provide a mid-scale facility for combustion and cleanup research to support DOE`s advanced gas turbine, pressurized, fluidized-bed combustion, and hot gas cleanup programs. The facility is intended to fill a gap between lab scale facilities typical of universities and large scale combustion/turbine test facilities typical of turbine manufacturers. The facility is now available to industry and university partners through cooperative programs with METC. High pressure combustion research is also important to other DOE programs. Integrated gasification combined cycle (IGCC) systems and second-generation, pressurized, fluidized-bed combustion (PFBC) systems use gas turbines/electric generators as primary power generators. The turbine combustors play an important role in achieving high efficiency and low emissions in these novel systems. These systems use a coal-derived fuel gas as fuel for the turbine combustor. The METC facility is designed to support coal fuel gas-fired combustors as well as the natural gas fired combustor used in the advanced turbine program.

Halow, J.S.; Maloney, D.J.; Richards, G.A.

1993-11-01T23:59:59.000Z

223

Coal combustion system  

SciTech Connect

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

224

Sandia Combustion Research Program  

DOE Green Energy (OSTI)

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.) [eds.

1988-01-01T23:59:59.000Z

225

Coal Combustion Products | Department of Energy  

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

Combustion Products Coal Combustion Products Coal combustion products (CCPs) are solid materials produced when coal is burned to generate electricity. Since coal provides the...

226

Building America Expert Meeting: Combustion Safety | Department...  

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

Meeting: Combustion Safety Building America Expert Meeting: Combustion Safety This is a meeting overview of "The Best Approach to Combustion Safety in a Direct Vent World, held...

227

Coal Combustion Products | Department of Energy  

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

Coal Combustion Products Coal Combustion Products Coal combustion products (CCPs) are solid materials produced when coal is burned to generate electricity. Since coal provides the...

228

Ignition of Combustion Modified Polyurethane Foam  

E-Print Network (OSTI)

Modeling of smoldering combustion propagation," Prog. Energysmoldering to flaming combustion of horizontally orientedThermal decomposition, combustion and fire-retardancy of

Putzeys, Olivier; Fernandez-Pello, Carlos; Urban, Dave L.

2005-01-01T23:59:59.000Z

229

A Generalized Pyrolysis Model for Combustible Solids  

E-Print Network (OSTI)

decomposition fronts in wood,” Combustion and Flame 139: 16–dynamics modeling of wood combustion,” Fire Safety Journalduring the pyrolysis of wood,” Combustion and Flame 17: 79–

Lautenberger, Chris

2007-01-01T23:59:59.000Z

230

Enlaces de Vehículos de Combustible Fexible  

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

combustible flexible provista por el Alternative Fuels & Advanced Vehicles Data Center (AFDC) del DOE Vehculos de Combustible Flexible: Una alternativa de combustible renovable...

231

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

232

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

233

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

234

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

235

Application and Practice of Regenerative Combustion Technology ...  

Science Conference Proceedings (OSTI)

Regenerative Combustion burning alternative to traditional flow control system is ... that regenerative combustion have many advantage in energy conservation ...

236

A Generalized Pyrolysis Model for Combustible Solids  

E-Print Network (OSTI)

different stages of combustion,” Biomass and Bioenergy 23:biomass pyrolysis,” to appear in Progress in Energy and Combustion

Lautenberger, Chris

2007-01-01T23:59:59.000Z

237

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

238

Superheated fuel injection for combustion of liquid-solid slurries  

DOE Patents (OSTI)

A method and device for obtaining, upon injection, flash evaporation of a liquid in a slurry fuel to aid in ignition and combustion. The device is particularly beneficial for use of coal-water slurry fuels in internal combustion engines such as diesel engines and gas turbines, and in external combustion devices such as boilers and furnaces. The slurry fuel is heated under pressure to near critical temperature in an injector accumulator, where the pressure is sufficiently high to prevent boiling. After injection into a combustion chamber, the water temperature will be well above boiling point at a reduced pressure in the combustion chamber, and flash boiling will preferentially take place at solid-liquid surfaces, resulting in the shattering of water droplets and the subsequent separation of the water from coal particles. This prevents the agglomeration of the coal particles during the subsequent ignition and combustion process, and reduces the energy required to evaporate the water and to heat the coal particles to ignition temperature. The overall effect will be to accelerate the ignition and combustion rates, and to reduce the size of the ash particles formed from the coal.

Robben, Franklin A. (Berkeley, CA)

1985-01-01T23:59:59.000Z

239

Superheated fuel injection for combustion of liquid-solid slurries  

DOE Patents (OSTI)

A method and device are claimed for obtaining, upon injection, flash evaporation of a liquid in a slurry fuel to aid in ignition and combustion. The device is particularly beneficial for use of coal-water slurry fuels in internal combustion engines such as diesel engines and gas turbines, and in external combustion devices such as boilers and furnaces. The slurry fuel is heated under pressure to near critical temperature in an injector accumulator, where the pressure is sufficiently high to prevent boiling. After injection into a combustion chamber, the water temperature will be well above boiling point at a reduced pressure in the combustion chamber, and flash boiling will preferentially take place at solid-liquid surfaces, resulting in the shattering of water droplets and the subsequent separation of the water from coal particles. This prevents the agglomeration of the coal particles during the subsequent ignition and combustion process, and reduces the energy required to evaporate the water and to heat the coal particles to ignition temperature. The overall effect will be to accelerate the ignition and combustion rates, and to reduce the size of the ash particles formed from the coal. 2 figs., 2 tabs.

Robben, F.A.

1984-10-19T23:59:59.000Z

240

Packed Bed Combustion: An Overview  

E-Print Network (OSTI)

Packed Bed Combustion: An Overview William Hallett Dept. of Mechanical Engineering Université d'Ottawa - University of Ottawa #12;Packed Bed Combustion - University of Ottawa - CICS 2005 Introduction air fuel feedproducts xbed grate Packed Bed Combustion: fairly large particles of solid fuel on a grate, air supplied

Hallett, William L.H.

Note: This page contains sample records for the topic "internal combustion maglev" 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

Renewable Energy Laboratory Development for Biofuels Advanced Combustion Studies  

DOE Green Energy (OSTI)

The research advanced fundamental science and applied engineering for increasing the efficiency of internal combustion engines and meeting emissions regulations with biofuels. The project developed a laboratory with new experiments and allowed investigation of new fuels and their combustion and emissions. This project supports a sustainable domestic biofuels and automotive industry creating economic opportunities across the nation, reducing the dependence on foreign oil, and enhancing U.S. energy security. The one year period of research developed fundamental knowledge and applied technology in advanced combustion, emissions and biofuels formulation to increase vehicle's efficiency. Biofuelsâ?? combustion was investigated in a Compression Ignition Direct Injection (DI) to develop idling strategies with biofuels and an Indirect Diesel Injection (IDI) intended for auxiliary power unit.

Soloiu, Valentin

2012-03-31T23:59:59.000Z

242

SIAM Conference on Numerical Combustion Sedona, AZ May 9-12, 2004  

Science Conference Proceedings (OSTI)

The Society for Industrial and Applied Mathematics hosted the Tenth International Conference on Numerical Combustion held May 9-12, 2004 in Sedona, Arizona. This distinguished conference series began in 1985 in Sophia Antipolis, France and was followed by conferences in San Francisco, California (1987), Juan les Pins, France (1989), St. Petersburg Beach, Florida (1991), Garmisch, Germany (1993), New Orleans, Louisiana (1996), York, England (1998), Amelia Island, Florida (2000), and Sorrento, Italy (2002). SIAM is widely recognized as the originator and the U.S. anchor of this important meeting whose topics concerns the applied mathematics and computation associated with combustion and reactive flow. In particular, the International Numerical Combustion Symposiums have become one of the international major venues for research on direct simulation and modeling turbulent reacting flow. It is also one of the major international venues for theoretical work in reacting flows. This meeting drew approximately 200 participants from 30 countries whose research included the topics in turbulence, kinetics, detonation, flames, pollution, microgravity, micro-combustion, ignition, applications of parallel processing, tera-scale computation of combustion applications, material synthesis, droplets and sprays, heterogeneous combustion, energetic materials (propellants and explosives), engine and furnace combustion, fires, numerical methods and, software engineering for combustion applications.

None

2004-09-23T23:59:59.000Z

243

Fragments, Combustion and Earthquakes  

E-Print Network (OSTI)

This paper is devoted to show the advantages of introducing a geometric viewpoint and a non extensive formulation in the description of apparently unrelated phenomena: combustion and earthquakes. Here, it is shown how the introduction of a fragmentation analysis based on that formulation leads to find a common point for description of these phenomena

Oscar Sotolongo-Costa; Antonio Posadas

2005-03-16T23:59:59.000Z

244

Method of improving fuel combustion efficiency  

Science Conference Proceedings (OSTI)

This patent describes a method of operating an internal combustion engine. It comprises: vaporizing a gasoline-alcohol fuel mixture by heating it in a chamber to above the final boiling point of the gasoline at one atmosphere pressure in the absence of air to form a vaporized gasoline-alcohol fuel mixture and immediately mixing the vaporized gasoline-alcohol fuel mixture with air in a carburetor without forming liquid droplets in the mixture and then immediately combusting the mixture in the engine in substantially a vaporized state. The gasoline comprises a mixture of hydrocarbons: the mixture having an intermediate carbon range relative to c{sub 4}-C{sub 12} fuel.

Talbert, W.L.

1990-09-11T23:59:59.000Z

245

THE EFFECTS OF HYDROGEN ADDITION AND INTAKE-INDUCED SWIRL ON THE CHARACTERISTICS OF NATURAL GAS COMBUSTION IN A SINGLE-CYLINDER SPARK-IGNITED ENGINE.  

E-Print Network (OSTI)

??Compressed natural gas (CNG) is an alternative fuel of interest for internal combustion engines (ICEs) in the mass transit and vocational applications. Increasingly, due to… (more)

Corrigan, Melanie

2011-01-01T23:59:59.000Z

246

CYCLE-BY-CYCLE COMBUSTION VARIATIONS IN SPARK-IGNITED ENGINES Engineering Technology Division, Oak Ridge National Laboratory, Oak Ridge TN 37831-8088 USA  

E-Print Network (OSTI)

CYCLE-BY-CYCLE COMBUSTION VARIATIONS IN SPARK-IGNITED ENGINES C.S. DAW Engineering Technology-2053 USA ABSTRACT Under constant nominal operating conditions, internal combustion engines can exhibit sub- stantial variation in combustion efficiency from one cycle to the next. Previous researchers have attempted

Tennessee, University of

247

Coal Combustion Products Extension Program  

SciTech Connect

This final project report presents the activities and accomplishments of the ''Coal Combustion Products Extension Program'' conducted at The Ohio State University from August 1, 2000 to June 30, 2005 to advance the beneficial uses of coal combustion products (CCPs) in highway and construction, mine reclamation, agricultural, and manufacturing sectors. The objective of this technology transfer/research program at The Ohio State University was to promote the increased use of Ohio CCPs (fly ash, FGD material, bottom ash, and boiler slag) in applications that are technically sound, environmentally benign, and commercially competitive. The project objective was accomplished by housing the CCP Extension Program within The Ohio State University College of Engineering with support from the university Extension Service and The Ohio State University Research Foundation. Dr. Tarunjit S. Butalia, an internationally reputed CCP expert and registered professional engineer, was the program coordinator. The program coordinator acted as liaison among CCP stakeholders in the state, produced information sheets, provided expertise in the field to those who desired it, sponsored and co-sponsored seminars, meetings, and speaking at these events, and generally worked to promote knowledge about the productive and proper application of CCPs as useful raw materials. The major accomplishments of the program were: (1) Increase in FGD material utilization rate from 8% in 1997 to more than 20% in 2005, and an increase in overall CCP utilization rate of 21% in 1997 to just under 30% in 2005 for the State of Ohio. (2) Recognition as a ''voice of trust'' among Ohio and national CCP stakeholders (particularly regulatory agencies). (3) Establishment of a national and international reputation, especially for the use of FGD materials and fly ash in construction applications. It is recommended that to increase Ohio's CCP utilization rate from 30% in 2005 to 40% by 2010, the CCP Extension Program be expanded at OSU, with support from state and federal agencies, utilities, trade groups, and the university, to focus on the following four specific areas of promise: (a) Expanding use in proven areas (such as use of fly ash in concrete); (b) Removing or reducing regulatory and perceptual barriers to use (by working in collaboration with regulatory agencies); (c) Developing new or under-used large-volume market applications (such as structural fills); and (d) Placing greater emphasis on FGD byproducts utilization.

Tarunjit S. Butalia; William E. Wolfe

2006-01-11T23:59:59.000Z

248

Combustion Research Facility | A Department of Energy Office...  

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

Heavy-Duty Heavy-Duty Low-Temperature and Diesel Combustion HCCISCCI Engine Fundamentals Spray Combustion Automotive Low-Temperature Diesel Combustion DISI Combustion...

249

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.

250

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.

251

Measurement of spray combustion processes  

SciTech Connect

A free jet configuration was chosen for measuring noncombusting spray fields and hydrocarbon-air spray flames in an effort to develop computational models of the dynamic interaction between droplets and the gas phase and to verify and refine numerical models of the entire spray combustion process. The development of a spray combustion facility is described including techniques for laser measurements in spray combustion environments and methods for data acquisition, processing, displaying, and interpretation.

Peters, C.E.; Arman, E.F.; Hornkohl, J.O.; Farmer, W.M.

1984-04-01T23:59:59.000Z

252

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...

253

Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments  

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

Although internal combustion engines have been used Although internal combustion engines have been used for more than a century, significant improvements in energy efficiency and emissions reduction are still possible. In fact, boosting the efficiency of internal combustion engines is one of the most promising and cost-effective approaches to increasing vehicle fuel economy over the next 30 years. The United States can cut its transportation fuel use 20%-40% through commercialization of advanced engines-resulting in greater economic, environmental, and energy security. Using these engines in hybrid and plug-in hybrid electric vehicles will enable even greater fuel savings benefits. The Advanced Combustion Engine R&D subprogram of the U.S. Department of Energy's Vehicle Technologies Program (VTP) is improving the fuel economy of

254

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. 1 fig.

Huber, D.J.; Briesch, M.S.

1998-07-21T23:59:59.000Z

255

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

256

Utilization ROLE OF COAL COMBUSTION  

E-Print Network (OSTI)

Center for Products Utilization ROLE OF COAL COMBUSTION PRODUCTS IN SUSTAINABLE CONSTRUCTION and Applied Science THE UNIVERSITY OF WISCONSIN - MILWAUKEE #12;ROLE OF COAL COMBUSTION PRODUCTS, Federal Highway Administration, Washington, DC., U.S.A. SYNOPSIS Over one hundred million tonnes of coal

Wisconsin-Milwaukee, University of

257

Method for in situ combustion  

DOE Patents (OSTI)

This invention relates to an improved in situ combustion method for the recovery of hydrocarbons from subterranean earth formations containing carbonaceous material. The method is practiced by penetrating the subterranean earth formation with a borehole projecting into the coal bed along a horizontal plane and extending along a plane disposed perpendicular to the plane of maximum permeability. The subterranean earth formation is also penetrated with a plurality of spaced-apart vertical boreholes disposed along a plane spaced from and generally parallel to that of the horizontal borehole. Fractures are then induced at each of the vertical boreholes which project from the vertical boreholes along the plane of maximum permeability and intersect the horizontal borehole. The combustion is initiated at the horizontal borehole and the products of combustion and fluids displaced from the earth formation by the combustion are removed from the subterranean earth formation via the vertical boreholes. Each of the vertical boreholes are, in turn, provided with suitable flow controls for regulating the flow of fluid from the combustion zone and the earth formation so as to control the configuration and rate of propagation of the combustion zone. The fractures provide a positive communication with the combustion zone so as to facilitate the removal of the products resulting from the combustion of the carbonaceous material.

Pasini, III, Joseph (Morgantown, WV); Shuck, Lowell Z. (Morgantown, WV); Overbey, Jr., William K. (Morgantown, WV)

1977-01-01T23:59:59.000Z

258

Quality Issues in Combustion LES  

Science Conference Proceedings (OSTI)

Combustion LES requires modelling of physics beyond the flow-field only. These additional models lead to further quality issues and an even stronger need to quantify simulation and modelling errors. We illustrate stability problems, the need for consistent ... Keywords: Combustion, Error landscape, LES, Large-Eddy simulation, Quality, Turbulence

A. M. Kempf; B. J. Geurts; T. Ma; M. W. Pettit; O. T. Stein

2011-10-01T23:59:59.000Z

259

Measurement Technology for Benchmark Spray Combustion ...  

Science Conference Proceedings (OSTI)

Benchmark Spray Combustion Database. ... A1, uncertainty budget for the fuel flow rate. A2, uncertainty budget for the combustion air flow rate. ...

2013-07-15T23:59:59.000Z

260

Turbulent Combustion Properties of Premixed Syngases  

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

Turbulent Combustion Properties of Premixed Syngases Title Turbulent Combustion Properties of Premixed Syngases Publication Type Journal Article Year of Publication 2009 Authors...

Note: This page contains sample records for the topic "internal combustion maglev" 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

Hydrogen engine and combustion control process  

DOE Patents (OSTI)

Hydrogen engine with controlled combustion comprises suction means connected to the crankcase reducing or precluding flow of lubricating oil or associated gases into the combustion chamber.

Swain, Michael R. (Coral Gables, FL); Swain, Matthew N. (Miami, FL)

1997-01-01T23:59:59.000Z

262

Improved Engine Design Through More Efficient Combustion ...  

Improved Engine Design Through More Efficient Combustion Simulations The Multi-Zone Combustion Model (MCM) is a software tool that enables ...

263

Advanced Computational Methods for Turbulence and Combustion...  

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

Advanced Computational Methods for Turbulence and Combustion Advanced Computational Methods for Turbulence and Combustion Bell.png Key Challenges: Development and application of...

264

Droplet Combustion and Non-Reactive Shear-Coaxial Jets with Transverse Acoustic Excitation  

E-Print Network (OSTI)

Related Works in Droplet Combustion . . . . . . . .of Acoustics on Droplet Combustion . . . . . . . . . . . .Fuel Droplet Combustion . . . . . . . . . . . . . . .

Teshome, Sophonias

2012-01-01T23:59:59.000Z

265

Group combustion of liquid fuel in laminar spray jet  

SciTech Connect

The present study examines the global configuration, detailed structure, and combustion characteristic of sprays under various firing conditions represented by various principal parameters including group combustion number, fuel-air mass ratio, Reynolds number, and spray angle. A system of conservation equations of spray flames in an axisymmetric configuration is solved by a finite-difference method for n-Butylbenzen (C/sub 10/H/sub 14/). An extensive spray sensitivity study reveals remarkable insight into the group flame structure which can be adopted as a basic engineering criteria for spray flame classification. It can be used to develop practical guides for the design of atomizers and burners. Highlights of the study are described in the following. There are three principal spray group combustion modes that may occur independently in a spray burner. These combustion modes are external, internal and critical group combustion modes, according to the relative magnitude of the length of the flame and the spray jet. The external group flame, located outside the spray jet is deemed to be the principal combustion configuration of practical spray flame. Predicted spray structure of the external flame is found to be in good agreement with the experimental observations. In particular, axial and radial distributions of major spray variables, droplet size, number density of droplet, concentration of fuel and oxidizer, velocities, and temperature, together with the flame contour and jet boundary are in qualitative agreement with the laboratory scale kerosene spray flame reported by Onuma and coworkers (1974, 1976). The existence of an air deficient fuel rich combustible mixture in the spray core is expected to provoke significant thermal decomposition of the hydrocarbon and also facilitate the formation of soot and particles.

Kim, H.Y.

1982-01-01T23:59:59.000Z

266

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

267

Combustion in porous media  

DOE Green Energy (OSTI)

A 2.8-liter tube-shaped combustion vessel was constructed to study flame propagation and quenching in porous media. For this experiment, hydrogen-air flames propagating horizontally into abed of 6 mm diameter glass beads were studied. Measurements of pressure and temperature along the length of the tube were used to observe flame propagation of quenching. The critical hydrogen concentration for Hz-air mixtures was found to be 11.5%, corresponding to a critical Peclet number of Pe* = 37. This value is substantially less than the value of Pe* = 65 quoted in the literature, for example Babkin et al. (1991). It is hypothesized that buoyancy and a dependence of Pe on the Lewis number account for the discrepancy between these two results.

Dillon, J. [California Inst. of Technology, CA (US)

1999-09-01T23:59:59.000Z

268

Particulate waste product combustion system  

SciTech Connect

An apparatus is described for incinerating combustion material within a fluidized bed, including the steps of: feeding the material into a fluidizing zone within which the bed is formed; introducing combustion supporting gas to the fluidizing zone in a plurality of inflow streams of different velocities insufficient to fluidize the material; continuously agitating the material to mechanically fluidize the same within the fluidizing zone during combustion and cause displacement of residual ash from the zone; and withdrawing the residual ash from a discharge location in the apparatus outside of the fluidizing zone.

Chastain, C.E.; King, D.R.

1986-05-20T23:59:59.000Z

269

COMBUSTION SYNTHESIS OF ADVANCED MATERIALS: PRINCIPLESAND APPLICATIONS  

E-Print Network (OSTI)

COMBUSTION SYNTHESIS OF ADVANCED MATERIALS: PRINCIPLESAND APPLICATIONS Arvind Varma, Alexander S. Gasless Combustion SynthesisFrom Elements B. Combustion Synthesis in Gas-Solid Systems C. Products of Thermite-vpe SHS D. Commercial Aspects IV. Theoretical Considerations A. Combustion Wave Propagation Theory

Mukasyan, Alexander

270

COMBUSTION ISSUES AND APPROACHES FOR CHEMICAL MICROTHRUSTERS  

E-Print Network (OSTI)

1 COMBUSTION ISSUES AND APPROACHES FOR CHEMICAL MICROTHRUSTERS Richard A. Yetter, Vigor Yang, Ming and the effects of downsizing on combustion performance. In particular, combustion of liquid nitromethane in a thruster combustion chamber with a volume of 108 mm3 and diameter of 5 mm was experimentally investigated

Yang, Vigor

271

The Combustion Institute 5001 Baum Boulevard  

E-Print Network (OSTI)

The Combustion Institute 5001 Baum Boulevard Pittsburgh, Pennsylvania, USA 15213-1851 CENTRAL STATES SECTION OF THE COMBUSTION INSTITUTE CALL FOR PAPERS TECHNICAL MEETING - SPRING 2002 COMBUSTION 7-9, 2002 #12;CENTRAL STATES SECTION OF THE COMBUSTION INSTITUTE www.cssci.org CALL FOR PAPERS

Tennessee, University of

272

Residential Wood Residential wood combustion (RWC) is  

E-Print Network (OSTI)

Residential Wood Combustion Residential wood combustion (RWC) is increasing in Europe because PM2.5. Furthermore, other combustion- related sources of OA in Europe may need to be reassessed. Will it affect global OA emission estimates? Combustion of biofuels is globally one of the major OA sources

273

EIA - International Energy Outlook 2010  

Gasoline and Diesel Fuel Update (EIA)

Emissions Emissions International Energy Outlook 2010 Graphic Data - Emissions Figure 103. World energy-related carbon dioxide emissions, 2007-2035 Figure 104. World energy-related carbon dioxide emissions by fuel type, 1990-2035 Figure 105. U.S.energy-related carbon dioxide emissions by fuel in IEO2009 and IEO2010, 2007, 2015, and 2035 Figure 106. Average annual growth in energy-related carbon dioxide emissions in OECD economies, 2007-2035 Figure 107. Average annual growth in energy-related carbon dioxide emissions in the Non-OECD economies, 2007-2035 Figure 108. World carbon dioxide emissions from liquids combustion, 1990-2035 Figure 109. World carbon dioxide emissions from natural gas combustion, 1990-2035 Figure 110. World carbon dioxide emissions from coal combustion, 1990-2035

274

Plum Combustion | Open Energy Information  

Open Energy Info (EERE)

Plum Combustion Plum Combustion Jump to: navigation, search Name Plum Combustion Place Atlanta, Georgia Product Combustion technology, which reduces NOx-emissions. Coordinates 33.748315°, -84.391109° 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":33.748315,"lon":-84.391109,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

275

Combustion modeling in waste tanks  

DOE Green Energy (OSTI)

This paper has two objectives. The first one is to repeat previous simulations of release and combustion of flammable gases in tank SY-101 at the Hanford reservation with the recently developed code GASFLOW-II. The GASFLOW-II results are compared with the results obtained with the HMS/TRAC code and show good agreement, especially for non-combustion cases. For combustion GASFLOW-II predicts a steeper pressure rise than HMS/TRAC. The second objective is to describe a so-called induction parameter model which was developed and implemented into GASFLOW-II and reassess previous calculations of Bureau of Mines experiments for hydrogen-air combustion. The pressure time history improves compared with the one-step model, and the time rate of pressure change is much closer to the experimental data.

Mueller, C.; Unal, C. [Los Alamos National Lab., NM (United States); Travis, J.R. [Los Alamos National Lab., NM (United States)]|[Forschungszentrum Karlsruhe (Germany). Inst. fuer Reaktorsicherheit

1997-08-01T23:59:59.000Z

276

Reducing mode circulating fluid bed combustion  

DOE Patents (OSTI)

A method for combustion of sulfur-containing fuel in a circulating fluid bed combustion system wherein the fuel is burned in a primary combustion zone under reducing conditions and sulfur captured as alkaline sulfide. The reducing gas formed is oxidized to combustion gas which is then separated from solids containing alkaline sulfide. The separated solids are then oxidized and recycled to the primary combustion zone.

Lin, Yung-Yi (Katy, TX); Sadhukhan, Pasupati (Katy, TX); Fraley, Lowell D. (Sugarland, TX); Hsiao, Keh-Hsien (Houston, TX)

1986-01-01T23:59:59.000Z

277

High Efficiency, Clean Combustion  

DOE Green Energy (OSTI)

Energy use in trucks has been increasing at a faster rate than that of automobiles within the U.S. transportation sector. According to the Energy Information Administration (EIA) Annual Energy Outlook (AEO), a 23% increase in fuel consumption for the U.S. heavy duty truck segment is expected between 2009 to 2020. The heavy duty vehicle oil consumption is projected to grow between 2009 and 2050 while light duty vehicle (LDV) fuel consumption will eventually experience a decrease. By 2050, the oil consumption rate by LDVs is anticipated to decrease below 2009 levels due to CAFE standards and biofuel use. In contrast, the heavy duty oil consumption rate is anticipated to double. The increasing trend in oil consumption for heavy trucks is linked to the vitality, security, and growth of the U.S. economy. An essential part of a stable and vibrant U.S. economy is a productive U.S. trucking industry. Studies have shown that the U.S. gross domestic product (GDP) is strongly correlated to freight transport. Over 90% of all U.S. freight tonnage is transported by diesel power and over 75% is transported by trucks. Given the vital role that the trucking industry plays in the economy, improving the efficiency of the transportation of goods was a central focus of the Cummins High Efficient Clean Combustion (HECC) program. In a commercial vehicle, the diesel engine remains the largest source of fuel efficiency loss, but remains the greatest opportunity for fuel efficiency improvements. In addition to reducing oil consumption and the dependency on foreign oil, this project will mitigate the impact on the environment by meeting US EPA 2010 emissions regulations. Innovation is a key element in sustaining a U.S. trucking industry that is competitive in global markets. Unlike passenger vehicles, the trucking industry cannot simply downsize the vehicle and still transport the freight with improved efficiency. The truck manufacturing and supporting industries are faced with numerous challenges to reduce oil consumption and greenhouse gases, meet stringent emissions regulations, provide customer value, and improve safety. The HECC program successfully reduced engine fuel consumption and greenhouse gases while providing greater customer valve. The US EPA 2010 emissions standard poses a significant challenge for developing clean diesel powertrains that meet the DoE Vehicle Technologies Multi-Year Program Plan (MYPP) for fuel efficiency improvement while remaining affordable. Along with exhaust emissions, an emphasis on heavy duty vehicle fuel efficiency is being driven by increased energy costs as well as the potential regulation of greenhouse gases. An important element of the success of meeting emissions while significantly improving efficiency is leveraging Cummins component technologies such as fuel injection equipment, aftertreatment, turbomahcinery, electronic controls, and combustion systems. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 55% peak brake thermal efficiency for the engine plus aftertreatment system. The first step in developing high efficiency clean products has been supported by the DoE co-sponsored HECC program. The objectives of the HECC program are: (1) To design and develop advanced diesel engine architectures capable of achieving US EPA 2010 emission regulations while improving the brake thermal efficiency by 10% compared to the baseline (a state of the art 2007 production diesel engine). (2) To design and develop components and subsystems (fuel systems, air handling, controls, etc) to enable construction and development of multi-cylinder engines. (3) To perform an assessment of the commercial viability of the newly developed engine technology. (4) To specify fuel properties conducive to improvements in emissions, reliability, and fuel efficiency for engines using high-efficiency clean combustion (HECC) technologies. To demonstrate the technology is compatible with B2

Donald Stanton

2010-03-31T23:59:59.000Z

278

Fluctuations in combustion-driven MHD generators  

DOE Green Energy (OSTI)

Results of an experimental and theoretical investigation of inherent fluctuations that occur within combustion-driven MHD generators are presented. The primary concern was to determine the presence and effects of axially-propagating, linear hydrodynamic traveling-waves of the magnetoacoustic and magnetoentropic types. The possible development of large fluctuations in high magnetic interaction MHD generators caused by hydrodynamic traveling-waves propagating with increasing amplitude was considered. Experimentally, time-resolved measurements of pressures, electrode currents, and internal differential voltages within a laboratory-scale, combustion-driven MHD generator facility were analyzed. A special probe-tube microphone provided a sensitive measurement of the pressure fluctuations within a combustion-driven MHD generator duct. The time-resolved measurements were analyzed in terms of statistical properties such as relative fluctuation levels, spectraldensity functions, cross-correlation coefficients, and coherence and relative phase functions. The presence and subsequent electrical effects of axially-propagating acoustic and entropy waves were observed. At low mean fluid velocities during MHD generator operation with high current densities, 1.0 Amp/cm/sup 2/, and with applied magnetic field, 2.4 Tesla, fluctuations in the current-magnetic field interaction force caused by the electrical conductivity variations associated with the entropy waves resulted in a threefold increase in pressure fluctuation levels within the upstream part of the MHD duct. Hydrodynamic traveling-waves within an MHD duct were theoretically investigated by considering a first-order linearization analysis of the controlling, quasi-one dimensional fluid and electrical equations of an MHD generator. Comparisons between experimental results and a theoretical model were in qualitative agreement.

Barton, J.P.

1980-08-01T23:59:59.000Z

279

Thallium in Coal Combustion Products  

Science Conference Proceedings (OSTI)

Thallium is a naturally occurring trace element that is present in coal and coal combustion products (CCPs). Thallium is of interest because it has a relatively low maximum contaminant level (MCL) in drinking water. This Technical Brief provides EPRI data on thallium in CCPs, along with general information on its occurrence, health effects, and treatment. Most of the information presented is summarized from the 2008 EPRI Technical Report 1016801, Chemical Constituents in Coal Combustion Product Leachate: ..

2013-11-27T23:59:59.000Z

280

Oxy-Combustion Activities Worldwide  

Science Conference Proceedings (OSTI)

This report reviews oxy-combustion development activities throughout the world. The report opens by reviewing carbon dioxide (CO2) capture technologies and their relative advantages and disadvantages before focusing on oxy-combustion concepts and giving details on potential designs. It then delves into each sub-system (air separation, oxy boiler, gas quality control, and CO2 purification) giving the latest updates on technologies and associated development issues, pulling from work reported at the Second...

2012-06-26T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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.


281

Co-combustion feasibility study. Final report  

DOE Green Energy (OSTI)

This report investigates the technical and economic feasibility of co-combusting municipal sewage sludge produced by the Saratoga County Sewer District No. 1 with paper mill sludge produced by the Cottrell Paper Company, Encore Paper Company, International Paper Company, Mohawk Paper Mills, and TAGSONS Papers at the Saratoga County Sewer District No. 1`s secondary wastewater treatment plant and recovering any available energy products. The co-combustion facility would consist of sludge and wood chip storage and conveying systems, belt filter presses, screw presses, fluidized-bed incinerators, venturi scrubbers and tray cooling systems, ash dewatering facilities, heat recovery steam generators, gas-fired steam superheaters, and a back-pressure steam turbine system. Clean waste wood chips would be used as an auxiliary fuel in the fluidized-bed incinerators. It is recommended that the ash produced by the proposed facility be beneficially used, potentially as a raw material in the manufacture of cement and/or as an interim barrier layer in landfills.

Handcock, D.J. [Clough, Harbour and Associates, Albany, NY (United States)

1995-01-01T23:59:59.000Z

282

The first turbulent combustion  

E-Print Network (OSTI)

The first turbulent combustion arises in a hot big bang cosmological model Gibson (2004) where nonlinear exothermic turbulence permitted by quantum mechanics, general relativity, multidimensional superstring theory, and fluid mechanics cascades from Planck to strong force freeze out scales with gravity balancing turbulent inertial-vortex forces. Interactions between Planck scale spinning and non-spinning black holes produce high Reynolds number turbulence and temperature mixing with huge Reynolds stresses driving the rapid inflation of space. Kolmogorovian turbulent temperature patterns are fossilized as strong-force exponential inflation stretches them beyond the scale of causal connection ct where c is light speed and t is time. Fossil temperature turbulence patterns seed nucleosynthesis, and then hydro-gravitational structure formation in the plasma epoch, Gibson (1996, 2000). Evidence about formation mechanisms is preserved by cosmic microwave background temperature anisotropies. CMB spectra indicate hydro-gravitational fragmentation at supercluster to galaxy masses in the primordial plasma with space stretched by \\~10^50. Bershadskii and Sreenivasan (2002, 2003) CMB multi-scaling coefficients support a strong turbulence origin for the anisotropies prior to the plasma epoch.

Carl H. Gibson

2005-01-19T23:59:59.000Z

283

Particulate emissions from combustion of biomass in conventional combustion (air) and oxy-combustion conditions.  

E-Print Network (OSTI)

??Oxy-fuel combustion is a viable technology for new and existing coal-fired power plants, as it facilitates carbon capture and thereby, can reduce carbon dioxide emissions.… (more)

Ruscio, Amanda

2013-01-01T23:59:59.000Z

284

Pre-Combustion Carbon Capture Research | Department of Energy  

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

Pre-Combustion Carbon Capture Research Pre-combustion capture refers to removing CO2 from fossil fuels before combustion is completed. For example, in gasification processes a...

285

High speed maglev design  

DOE Patents (OSTI)

A propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields. 4 figures.

Rote, D.M.; Jianliang He; Coffey, H.

1993-10-19T23:59:59.000Z

286

Turbulent Combustion in SDF Explosions  

Science Conference Proceedings (OSTI)

A heterogeneous continuum model is proposed to describe the dispersion and combustion of an aluminum particle cloud in an explosion. It combines the gas-dynamic conservation laws for the gas phase with a continuum model for the dispersed phase, as formulated by Nigmatulin. Inter-phase mass, momentum and energy exchange are prescribed by phenomenological models. It incorporates a combustion model based on the mass conservation laws for fuel, air and products; source/sink terms are treated in the fast-chemistry limit appropriate for such gasdynamic fields, along with a model for mass transfer from the particle phase to the gas. The model takes into account both the afterburning of the detonation products of the C-4 booster with air, and the combustion of the Al particles with air. The model equations were integrated by high-order Godunov schemes for both the gas and particle phases. Numerical simulations of the explosion fields from 1.5-g Shock-Dispersed-Fuel (SDF) charge in a 6.6 liter calorimeter were used to validate the combustion model. Then the model was applied to 10-kg Al-SDF explosions in a an unconfined height-of-burst explosion. Computed pressure histories are compared with measured waveforms. Differences are caused by physical-chemical kinetic effects of particle combustion which induce ignition delays in the initial reactive blast wave and quenching of reactions at late times. Current simulations give initial insights into such modeling issues.

Kuhl, A L; Bell, J B; Beckner, V E

2009-11-12T23:59:59.000Z

287

HCCI Combustion: Analysis and Experiments  

DOE Green Energy (OSTI)

Homogeneous charge compression ignition (HCCI) is a new combustion technology that may develop as an alternative to diesel engines with high efficiency and low NOx and particulate matter emissions. This paper describes the HCCI research activities being currently pursued at Lawrence Livermore National Laboratory and at the University of California Berkeley. Current activities include analysis as well as experimental work. On analysis, we have developed two powerful tools: a single zone model and a multi-zone model. The single zone model has proven very successful in predicting start of combustion and providing reasonable estimates for peak cylinder pressure, indicated efficiency and NOX emissions. This model is being applied to develop detailed engine performance maps and control strategies, and to analyze the problem of engine startability. The multi-zone model is capable of very accurate predictions of the combustion process, including HC and CO emissions. The multi-zone model h as applicability to the optimization of combustion chamber geometry and operating conditions to achieve controlled combustion at high efficiency and low emissions. On experimental work, we have done a thorough evaluation of operating conditions in a 4-cylinder Volkswagen TDI engine. The engine has been operated over a wide range of conditions by adjusting the intake temperature and the fuel flow rate. Satisfactory operation has been obtained over a wide range of operating conditions. Cylinder-to-cylinder variations play an important role in limiting maximum power, and should be controlled to achieve satisfactory performance.

Salvador M. Aceves; Daniel L. Flowers; Joel Martinez-Frias; J. Ray Smith; Robert Dibble; Michael Au; James Girard

2001-05-14T23:59:59.000Z

288

STRUCTURE-BASED PREDICTIVE MODEL FOR COAL CHAR COMBUSTION  

Science Conference Proceedings (OSTI)

Progress was made this period on a number of tasks. A significant advance was made in the incorporation of macrostructural ideas into high temperature combustion models. Work at OSU by R. Essenhigh in collaboration with the University of Stuttgart has led to a theory that the zone I / II transition in char combustion lies within the range of conditions of interest for pulverized char combustion. The group has presented evidence that some combustion data, previously interpreted with zone II models, in fact takes place in the transition from zone II to zone 1. This idea was used at Brown to make modifications to the CBK model (a char kinetics package specially designed for carbon burnout prediction, currently used by a number of research and furnace modeling groups in academia and industry). The resulting new model version, CBK8, shows improved ability to predict extinction behavior in the late stages of combustion, especially for particles with low ash content. The full development and release of CBK8, along with detailed descriptions of the role of the zone 1/2 transition will be reported on in subsequent reports. ABB-CE is currently implementing CBK7 into a special version of the CFD code Fluent for use in the modeling and design of their boilers. They have been appraised of the development, and have expressed interest in incorporating the new feature, realizing full CBK8 capabilities into their combustion codes. The computational chemistry task at OSU continued to study oxidative pathways for PAH, with emphasis this period on heteroatom containing ring compounds. Preliminary XPS studies were also carried out. Combustion experiments were also carried out at OSU this period, leading to the acquisition of samples at various residence times and the measurement of their oxidation reactivity by nonisothermal TGA techniques. Several members of the project team attended the Carbon Conference this period and made contacts with representatives from the new FETC Consortium for Premium Carbon Products from Coal. Possibilities for interactions with this new center will be explored. Also this period, an invited review paper was prepared for the 27th International Symposium on Combustion, to be held in Boulder, Colorado in August. The paper is entitled; "Structure, Properties, and Reactivity of Solid Fuels," and reports on a number of advances made in this collaborative project.

CHRISTOPHER M. HADAD; JOSEPH M. CALO; ROBERT H. ESSENHIGH; ROBERT H. HURT

1998-09-11T23:59:59.000Z

289

Combustion instability modeling and analysis  

DOE Green Energy (OSTI)

It is well known that the two key elements for achieving low emissions and high performance in a gas turbine combustor are to simultaneously establish (1) a lean combustion zone for maintaining low NO{sub x} emissions and (2) rapid mixing for good ignition and flame stability. However, these requirements, when coupled with the short combustor lengths used to limit the residence time for NO formation typical of advanced gas turbine combustors, can lead to problems regarding unburned hydrocarbons (UHC) and carbon monoxide (CO) emissions, as well as the occurrence of combustion instabilities. The concurrent development of suitable analytical and numerical models that are validated with experimental studies is important for achieving this objective. A major benefit of the present research will be to provide for the first time an experimentally verified model of emissions and performance of gas turbine combustors. The present study represents a coordinated effort between industry, government and academia to investigate gas turbine combustion dynamics. Specific study areas include development of advanced diagnostics, definition of controlling phenomena, advancement of analytical and numerical modeling capabilities, and assessment of the current status of our ability to apply these tools to practical gas turbine combustors. The present work involves four tasks which address, respectively, (1) the development of a fiber-optic probe for fuel-air ratio measurements, (2) the study of combustion instability using laser-based diagnostics in a high pressure, high temperature flow reactor, (3) the development of analytical and numerical modeling capabilities for describing combustion instability which will be validated against experimental data, and (4) the preparation of a literature survey and establishment of a data base on practical experience with combustion instability.

Santoro, R.J.; Yang, V.; Santavicca, D.A. [Pennsylvania State Univ., University Park, PA (United States); Sheppard, E.J. [Tuskeggee Univ., Tuskegee, AL (United States). Dept. of Aerospace Engineering

1995-12-31T23:59:59.000Z

290

Combustion heater for oil shale  

DOE Patents (OSTI)

A combustion heater for oil shale heats particles of spent oil shale containing unburned char by burning the char. A delayed fall is produced by flowing the shale particles down through a stack of downwardly sloped overlapping baffles alternately extending from opposite sides of a vertical column. The delayed fall and flow reversal occurring in passing from each baffle to the next increase the residence time and increase the contact of the oil shale particles with combustion supporting gas flowed across the column to heat the shale to about 650 to 700/sup 0/C for use as a process heat source.

Mallon, R.; Walton, O.; Lewis, A.E.; Braun, R.

1983-09-21T23:59:59.000Z

291

Combustion heater for oil shale  

DOE Patents (OSTI)

A combustion heater for oil shale heats particles of spent oil shale containing unburned char by burning the char. A delayed fall is produced by flowing the shale particles down through a stack of downwardly sloped overlapping baffles alternately extending from opposite sides of a vertical column. The delayed fall and flow reversal occurring in passing from each baffle to the next increase the residence time and increase the contact of the oil shale particles with combustion supporting gas flowed across the column to heat the shale to about 650.degree.-700.degree. C. for use as a process heat source.

Mallon, Richard G. (Livermore, CA); Walton, Otis R. (Livermore, CA); Lewis, Arthur E. (Los Altos, CA); Braun, Robert L. (Livermore, CA)

1985-01-01T23:59:59.000Z

292

Engine Combustion Network Experimental Data  

DOE Data Explorer (OSTI)

Maintained by the Engine Combustion Department of Sandia National Laboratories, data currently available on the website includes reacting and non-reacting sprays in a constant-volume chamber at conditions typical of diesel combustion. The data are useful for model development and validation because of the well-defined boundary conditions and the wide range of conditions employed. A search utility displays data based on experimental conditions such as ambient temperature, ambient density, injection pressure, nozzle size, fuel, etc. Experiment-related visualizations are also available. The search utility for experimental data is located at http://public.ca.sandia.gov/ecn/cvdata/frameset.html (Specialized Interface)

293

Transonic Combustion Inc | Open Energy Information  

Open Energy Info (EERE)

Transonic Combustion Inc Transonic Combustion Inc Jump to: navigation, search Name Transonic Combustion, Inc. Place Camarillo, California Zip CA 93012 Sector Efficiency, Renewable Energy Product Transonic Combustion, Inc. is a US based research & development company focused on developing ultra-high efficiency automotive engines that run on gasoline and bio-renewable flex fuels. References Transonic Combustion, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Transonic Combustion, Inc. is a company located in Camarillo, California . References ↑ "Transonic Combustion, Inc." Retrieved from "http://en.openei.org/w/index.php?title=Transonic_Combustion_Inc&oldid=352376

294

Engine control system for multiple combustion modes  

Science Conference Proceedings (OSTI)

To reduce the emission by Diesel-engine in railway traction, continuous development and innovation in combustion, sensing net, control method and strategies are required to met the legal requirements. Multiple combustion modes by Diesel engines can reduce ...

D. Bonta; V. Tulbure; Cl. Festila

2008-05-01T23:59:59.000Z

295

TURBULENT FRBRNNING MVK130 Turbulent Combustion  

E-Print Network (OSTI)

TURBULENT F�RBR�NNING MVK130 Turbulent Combustion Poäng: 3.0 Betygskala: TH Valfri för: M4 to combustion, McGraw-Hill 1996. #12;

296

Method for storing radioactive combustible waste  

DOE Patents (OSTI)

A method is described for preventing pressure buildup in sealed containers which contain radioactively contaminated combustible waste material by adding an oxide getter material to the container so as to chemically bind sorbed water and combustion product gases. (Official Gazette)

Godbee, H.W.; Lovelace, R.C.

1973-10-01T23:59:59.000Z

297

Large-Scale Hydrogen Combustion Experiments  

Science Conference Proceedings (OSTI)

Large-scale combustion experiments show that deliberate ignition can limit hydrogen accumulation in reactor containments. The collected data allow accurate evaluation of containment pressures and temperatures associated with hydrogen combustion.

1988-10-18T23:59:59.000Z

298

Theoretical studies on hydrogen ignition and droplet combustion  

E-Print Network (OSTI)

Combustion Theory Second Edition, Addison-Wesley, Red- woodCombustion Theory. Second Edition, Addison-Wesley, Red- wood

Del Álamo, Gonzalo

2006-01-01T23:59:59.000Z

299

Combustion Synthesis of Silicon Carbide 389 Combustion Synthesis of Silicon Carbide  

E-Print Network (OSTI)

Combustion Synthesis of Silicon Carbide 389 X Combustion Synthesis of Silicon Carbide Alexander S. Mukasyan University of Notre Dame USA 1. Introduction Combustion synthesis (CS) is an effective technique by which combustion synthesis can occur: self - propagating high-temperature synthesis (SHS) and volume

Mukasyan, Alexander

300

ME 6990 -Combustion Catalog Data: ME 6990: Combustion. Sem. 2. Class 3, Credit 3 (el.).  

E-Print Network (OSTI)

ME 6990 - Combustion Catalog Data: ME 6990: Combustion. Sem. 2. Class 3, Credit 3 (el.). Physical and chemical aspects of basic combustion phenomena. Classification of flames. Measurement of laminar flame. Fuels. Atomization and evaporation of liquid fuels. Theories of ignition, stability and combustion

Panchagnula, Mahesh

Note: This page contains sample records for the topic "internal combustion maglev" 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

Supersonic combustion studies using a multivariate quadrature based method for combustion modeling  

E-Print Network (OSTI)

Supersonic combustion studies using a multivariate quadrature based method for combustion modeling function (PDF) of thermochemical variables can be used for accurately computing the combustion source term of predictive models for supersonic combustion is a critical step in design and development of scramjet engines

Raman, Venkat

302

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

303

Combustion Synthesis of Doped Calcium Cobaltate Thermoelectric ...  

Science Conference Proceedings (OSTI)

Symposium, Innovative Processing and Synthesis of Ceramics, Glasses and Composites. Presentation Title, Combustion Synthesis of Doped Calcium Cobaltate ...

304

Review of Combustion Modification Emerging Technologies  

Science Conference Proceedings (OSTI)

Combustion modification emerging technologies for coal-fired boilers represent new developments in NOx control through changes in the fuel/air mixing of the combustion process. Technologies examined in this report fall into the categories of low-NOX burners (LNB), overfire air (OFA), enriched combustion, and combustion diagnostics. The technology reviews are comprised of the following sections where sufficient information was available: background, NOX reduction principle, performance and experience base...

2008-02-26T23:59:59.000Z

305

Apparatus and method for operating internal combustion engines ...  

Solar Photovoltaic; Solar Thermal; Startup America; Vehicles and Fuels; Wind Energy; ... The Regents of the University of California (Oakland, CA) Application Number:

306

Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency  

E-Print Network (OSTI)

Collisions with Carbon Dioxide. ” J. Phys. Chem. Ref. Data,of the harmful impact of carbon dioxide emissions. Chapterof atmospheric carbon dioxide have intensified the

DeFilippo, Anthony Cesar

2013-01-01T23:59:59.000Z

307

Alternative Fuel Pilot Plant & Hydrogen Internal Combustion Engine...  

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

a model alternative fuel refueling system, dispensing hydrogen, compressed natural gas (CNG), and hydrogenCNG blends (HCNG). The plant is used daily to fuel vehicles operated in...

308

Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency  

E-Print Network (OSTI)

contiguous United States crude oil production would peakthose associated with conventional oil. The problem has thusbiomass, coal, and whale oil for heat and light, harnessing

DeFilippo, Anthony Cesar

2013-01-01T23:59:59.000Z

309

CSE - International Workshop on Photon Tools for Combustion and...  

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

- Conversion Travel View Argonne Site Map Argonne National Laboratory is about 45 minutes by car from each of the two major Chicago airports, O'Hare and Midway (see map)....

310

Variable Stroke Crank Shaft for an Internal Combustion Engine.  

E-Print Network (OSTI)

??Our planet is continuously being depleted of its natural resources leading to a need to conserve energy and the environment. One of the major energy… (more)

Ismail, Fareed

2012-01-01T23:59:59.000Z

311

Animal fat (tallow) as fuel for stationary internal combustion engines.  

E-Print Network (OSTI)

??The main aim of this thesis is to verify the suitability of waste animal fat, obtained from animal by-products in a process called rendering, as… (more)

Piaszyk, Jakub

2012-01-01T23:59:59.000Z

312

Dynamic instabilities in spark-ignited combustion engines with high exhaust gas recirculation  

DOE Green Energy (OSTI)

We propose a cycle-resolved dynamic model for combustion instabilities in spark-ignition engines operating with high levels of exhaust gas recirculation (EGR). High EGR is important for increasing fuel efficiency and implementing advanced low-emission combustion modes such as homogenous charge compression ignition (HCCI). We account for the complex combustion response to cycle-to-cycle feedback by utilizing a global probability distribution that describes the pre-spark state of in-cylinder fuel mixing. The proposed model does a good job of simulating combustion instabilities observed in both lean-fueling engine experiments and in experiments where nitrogen dilution is used to simulate some of the combustion inhibition of EGR. When used to simulate high internal EGR operation, the model exhibits a range of global bifurcations and chaos that appear to be very robust. We use the model to show that it should be possible to reduce high EGR combustion instabilities by switching from internal to external EGR. We also explain why it might be helpful to deliberately stratify the fuel in the pre-spark gas mixture. It might be possible to extend the simple approach used in this model to other chemical reaction systems with spatial inhomogeneity.

Daw, C Stuart [ORNL; FINNEY, Charles E A [ORNL

2011-01-01T23:59:59.000Z

313

Combustor nozzle for a fuel-flexible combustion system  

DOE Patents (OSTI)

A combustor nozzle is provided. The combustor nozzle includes a first fuel system configured to introduce a syngas fuel into a combustion chamber to enable lean premixed combustion within the combustion chamber and a second fuel system configured to introduce the syngas fuel, or a hydrocarbon fuel, or diluents, or combinations thereof into the combustion chamber to enable diffusion combustion within the combustion chamber.

Haynes, Joel Meier (Niskayuna, NY); Mosbacher, David Matthew (Cohoes, NY); Janssen, Jonathan Sebastian (Troy, NY); Iyer, Venkatraman Ananthakrishnan (Mason, OH)

2011-03-22T23:59:59.000Z

314

The Future of Combustion Turbine Technology for Industrial and Utility Power Generation  

E-Print Network (OSTI)

Low capital cost and ample low-cost natural gas supplies will make natural gas-fired combustion turbine systems the power generation technology of choice over the next decade. Against the background of earlier use by electric utilities, this paper examines the status, economic outlook, and future directions of combustion turbine technology for industrial and utility power generation. The discussion takes into account the ongoing deregulation and increasing competition that are shaping the electric power generation business. Included is a comparison between heavy-duty industrial combustion turbines and their rapidly evolving competition, aeroderivative machines, with emphasis on the appropriate application of each. The prospects for future improvements in the cost and performance of combustion turbines are reviewed, and the likely impact of advanced combustion turbine power generation concepts is considered. Also summarized is the outlook for power generation fuels, including the longer term reemergence of coal and the potential for widespread use of coal gasification-based combustion turbine systems. The paper draws 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 companies that includes utilities, independent power producers (IPPs), and power industry equipment vendors.

Karp, A. D.; Simbeck, D. R.

1994-04-01T23:59:59.000Z

315

Fifteen Lectures on Laminar and Turbulent Combustion  

E-Print Network (OSTI)

Fifteen Lectures on Laminar and Turbulent Combustion N. Peters RWTH Aachen Ercoftac Summer School in Combustion Systems 1 Lecture 2: Calculation of Adiabatic Flame Temperatures and Chemical Equilibria 20: Laminar Diffusion Flames: Different Flow Geometries 156 Lecture 11: Turbulent Combustion: Introduction

Peters, Norbert

316

Combustion joining of refractory materials: Carboncarbon composites  

E-Print Network (OSTI)

Combustion joining of refractory materials: Carbon­carbon composites Jeremiah D.E. White Department­carbon composite is achieved by employing self-sustained, oxygen-free, high-temperature combustion reactions to a used "core" to produce a brake that meets the performance specifications. The combustion-joining (CJ

Mukasyan, Alexander

317

Reduced No.sub.x combustion method  

DOE Patents (OSTI)

A combustion method enabling reduced NO.sub.x formation wherein fuel and oxidant are separately injected into a combustion zone in a defined velocity relation, combustion gases are aspirated into the oxidant stream prior to intermixture with the fuel, and the fuel is maintained free from contact with oxygen until the intermixture.

Delano, Mark A. (Briarcliff Manor, NY)

1991-01-01T23:59:59.000Z

318

INTEGRAL CATALYTIC COMBUSTION/FUEL REFORMING  

E-Print Network (OSTI)

INTEGRAL CATALYTIC COMBUSTION/FUEL REFORMING FOR GAS TURBINE Prepared For: California Energy REPORT (FAR) INTEGRAL CATALYTIC COMBUSTION/FUEL REFORMING FOR GAS TURBINE CYCLES EISG AWARDEE University://www.energy.ca.gov/research/index.html. #12;Page 1 Integral Catalytic Combustion/Fuel Reforming for Gas Turbine Cycles EISG Grant # 99

319

Apparatus for closed-loop combustion control in internal combustion engines  

SciTech Connect

Schematically disclosed is an engine control apparatus wherein cylinder pressure is sensed before and after the top dead center position. Desired cylinder pressure curves are stored in a microcomputer for a range of engine speed-load combinations. By electrically comparing the actual pressure-time curve with the desired pressure curve for the existing speed-load combination it should be possible to generate an error signal representing deviation of actual engine performance from the desired performance, i.e., a permissible plus or minus band following the desired curve. The invention would provide a control action using only three parameters, namely engine speed, engine load and cylinder pressure.

Cheklich, G.E.

1983-03-10T23:59:59.000Z

320

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

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

– Oxy-Combustion CO2 Emissions Control – Oxy-Combustion CO2 Emissions Control CANMET CO2 Consortium-O2/CO2 Recycle Combustion Project No.: IEA-CANMET-CO2 (International Agreement) Photograph of CANMET's Vertical Combustor Research Facility. Photograph of CANMET’s Vertical Combustor Research Facility. The CANMET carbon dioxide (CO2) consortium will conduct research to further the development of oxy-combustion for retrofit to coal-fired power plants. Research activities include: (1) modeling of an advanced, supercritical pressure oxy-coal plant, including an analysis of the impact of oxygen (O2) purity and O2 partial enrichment, overall process performance, and cost; (2) testing of pilot-scale CO2 capture and compression; (3) investigating CO2 phase change at liquid and supercritical states in gas mixtures

Note: This page contains sample records for the topic "internal combustion maglev" 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

NETL: 2009 Conference Proceedings - Pre-combustion CO2 Capture Kick-off  

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

Pre-combustion CO2 Capture Kick-off Meetings Pre-combustion CO2 Capture Kick-off Meetings Pittsburgh, PA November 12-13, 2009 Table of Contents Disclaimer Presentations PRESENTATIONS Welcome/Sequestration Program Overview [PDF-842KB] Sean Plasynski, Sequestration Technology Manager Hydrogen Selective Ex-foliated Zeolite Membranes [PDF-3.4MB] University Of Minnesota Designing and Validating Ternary Pd Alloys for Optimum Sulfur/Carbon Resistance in Hydrogen Separation and Carbon Capture Membrane Systems Using High-Throughput Combinatorial Methods [PDF-746KB] Pall Corporation Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic-Carbonate Membrane Reactor [PDF-1.7MB] Arizona State University CO2 Capture from IGCC Gas Streams Using the AC-ABC Process [PDF-842KB] SRI International A Low-Cost, High-Efficiency Regenerable Sorbent for Pre-Combustion CO2 Capture [PDF-1.2MB]

322

international risk governance council Policy Brief  

E-Print Network (OSTI)

, such as natural gas, ammonia, or hydrogen production. Regulation of transport and geological storage must "To continue to extract and combust the world's rich endowment of oil, coal, peat, and natural gas of an injection well, In Salah Gas. Courtesy of BP #12;international risk governance council Regulation of Carbon

Thomas, David D.

323

Boron in Coal Combustion Products  

Science Conference Proceedings (OSTI)

This Technical Brief summarizes EPRI data on boron in CCPs, along with general information on its occurrence, health effects, and treatment. Much of the information presented is summarized from the 2005 EPRI technical report 1005258, Chemical Constituents in Coal Combustion Product Leachate: Boron, and is updated where appropriate.

2012-12-30T23:59:59.000Z

324

Pressurized fluidized-bed combustion  

SciTech Connect

If pressurised fluidised-bed combustion is to be used in combined cycle electricity generation, gas turbines must be made reliable and flue gas emission standards must be met. This report examines the issues of particulate cleaning before the turbine and stack, as well as recent work on the development of advanced gas filters.

Yeager, K.

1983-06-01T23:59:59.000Z

325

BIBLIOGRAPHY ON INTERNAL COMBUSTION ENGINES 1. F. Obert, Internal Combustion Engines and Air Pollution, Intext Educational Publishers, 1973  

E-Print Network (OSTI)

depend on vari- ous factors: engine temperature and load, aftertreatment de- vices and dilution-11545-2010 © Author(s) 2010. CC Attribution 3.0 License. Atmospheric Chemistry and Physics Impact of aftertreatment aftertreatment systems. One vehicle lacked exhaust aftertreatment devices, one ve- hicle was equipped

Entekhabi, Dara

326

Combustion engineering issues for solid fuel systems  

SciTech Connect

The book combines modeling, policy/regulation and fuel properties with cutting edge breakthroughs in solid fuel combustion for electricity generation and industrial applications. This book provides real-life experiences and tips for addressing the various technical, operational and regulatory issues that are associated with the use of fuels. Contents are: Introduction; Coal Characteristics; Characteristics of Alternative Fuels; Characteristics and Behavior of Inorganic Constituents; Fuel Blending for Combustion Management; Fuel Preparation; Conventional Firing Systems; Fluidized-Bed Firing Systems; Post-Combustion Emissions Control; Some Computer Applications for Combustion Engineering with Solid Fuels; Gasification; Policy Considerations for Combustion Engineering.

Bruce Miller; David Tillman [Pennsylvania State University, University Park, PA (United States). Energy Institute

2008-05-15T23:59:59.000Z

327

Combustion diagnostic for active engine feedback control  

DOE Patents (OSTI)

This invention detects the crank angle location where combustion switches from premixed to diffusion, referred to as the transition index, and uses that location to define integration limits that measure the portions of heat released during the combustion process that occur during the premixed and diffusion phases. Those integrated premixed and diffusion values are used to develop a metric referred to as the combustion index. The combustion index is defined as the integrated diffusion contribution divided by the integrated premixed contribution. As the EGR rate is increased enough to enter the low temperature combustion regime, PM emissions decrease because more of the combustion process is occurring over the premixed portion of the heat release rate profile and the diffusion portion has been significantly reduced. This information is used to detect when the engine is or is not operating in a low temperature combustion mode and provides that feedback to an engine control algorithm.

Green, Jr., Johney Boyd (Knoxville, TN); Daw, Charles Stuart (Knoxville, TN); Wagner, Robert Milton (Knoxville, TN)

2007-10-02T23:59:59.000Z

328

An Energy Analysis of the Catalytic Combustion Burner  

E-Print Network (OSTI)

The gas boilers of conventional flame always produce varying degrees of combustion products NOx and CO, which pollute the environment and waste energy. As a new way of combustion, catalytic combustion breaks the flammable limits of conventional flame combustion, and realizes the combustion of ultra-natural gas/air mixture under the flammable limits. Its combustion efficiency is higher, which improves the ratio of energy utilization. Applying the catalytic combustion to gas boilers could solve the gas boilers' lower combustion efficiency, and achieve energy savings. On the basis of the catalytic combustion burner, the catalytic combustion burner was designed according to the catalytic combustion and water heaters. In this paper, we analyzed the heat loss and thermal efficiency of the catalytic combustion burner, and compared it to that of flame combustion boilers. The results showed that catalytic combustion burner ?'s heat loss is not so high as originally considered, and its pollutant emissions are lower.

Dong, Q.; Zhang, S.; Duan, Z.; Zhou, Q.

2006-01-01T23:59:59.000Z

329

Low Temperature Combustion Demonstrator for High Efficiency Clean Combustion  

SciTech Connect

The project which extended from November 2005 to May of 2010 demonstrated the application of Low Temperature Combustion (LTC) with engine out NOx levels of 0.2 g/bhp-hr throughout the program target load of 12.6bar BMEP. The project showed that the range of loads could be extended to 16.5bar BMEP, therefore matching the reference lug line of the base 2007 MY Navistar 6.4L V8 engine. Results showed that the application of LTC provided a dramatic improvement over engine out emissions when compared to the base engine. Furthermore LTC improved thermal efficiency by over 5% from the base production engine when using the steady state 13 mode composite test as a benchmark. The key enablers included improvements in the air, fuel injection, and cooling systems made in Phases I and II. The outcome was the product of a careful integration of each component under an intelligent control system. The engine hardware provided the conditions to support LTC and the controller provided the necessary robustness for a stable combustion. Phase III provided a detailed account on the injection strategy used to meet the high load requirements. During this phase, the control strategy was implemented in a production automotive grade ECU to perform cycle-by-cycle combustion feedback on each of the engine cylinders. The control interacted on a cycle base with the injection system and with the Turbo-EGR systems according to their respective time constants. The result was a unique system that could, first, help optimize the combustion system and maintain high efficiency, and secondly, extend the steady state results to the transient mode of operation. The engine was upgraded in Phase IV with a Variable Valve Actuation system and a hybrid EGR loop. The impact of the more versatile EGR loop did not provide significant advantages, however the application of VVA proved to be an enabler to further extend the operation of LTC and gain considerable benefits in fuel economy and soot reduction. Finally, the transient demonstration was performed in Phase IV. The project demonstrated the achievement of meeting US10 emissions without NOx aftertreatment. The successful execution of the project has served to highlight the effectiveness of closely matched combustion predictive tools to engine testing. It has further served to highlight the importance of key technologies and future areas of research and development. In this regard, recommendations are made towards further improvements in the areas of engine hardware, fuel injection systems, controls and fuels.

Ojeda, William de

2010-07-31T23:59:59.000Z

330

Transportable Combustion Turbine Demonstration Project  

Science Conference Proceedings (OSTI)

New York State Electric and Gas Corporation (NYSEG) installed a 7.15-MW Solar® Taurus™ 70 (nominal 7 MW) gas combustion turbine (CT) at its State Street substation in Auburn, New York. As a demonstration project supported through EPRI's Tailored Collaboration (TC) program, it is intended to aid in better understanding the "complete picture" for siting this particular technology as a distributed resource (DR).

2001-12-14T23:59:59.000Z

331

Control circuit for combustion systems  

SciTech Connect

A control circuit is described for gas fired burners and the like such as are employed in commercial laundry fabric ironers requiring the energization of a blower motor and the resulting opening of a gas valve and ignition of a gas burner only after an air pressure sensitive switch is actuated through the operation of the blower motor for purging the system of combustible gases.

Kamberg, E.

1981-11-10T23:59:59.000Z

332

Oil shale combustion/retorting  

SciTech Connect

The Morgantown Energy Technology Center (METC) conducted a number of feasibility studies on the combustion and retorting of five oil shales: Celina (Tennessee), Colorado, Israeli, Moroccan, and Sunbury (Kentucky). These studies generated technical data primarily on (1) the effects of retorting conditions, (2) the combustion characteristics applicable to developing an optimum process design technology, and (3) establishing a data base applicable to oil shales worldwide. During the research program, METC applied the versatile fluidized-bed process to combustion and retorting of various low-grade oil shales. Based on METC's research findings and other published information, fluidized-bed processes were found to offer highly attractive methods to maximize the heat recovery and yield of quality oil from oil shale. The principal reasons are the fluidized-bed's capacity for (1) high in-bed heat transfer rates, (2) large solid throughput, and (3) selectivity in aromatic-hydrocarbon formation. The METC research program showed that shale-oil yields were affected by the process parameters of retorting temperature, residence time, shale particle size, fluidization gas velocity, and gas composition. (Preferred values of yields, of course, may differ among major oil shales.) 12 references, 15 figures, 8 tables.

Not Available

1983-05-01T23:59:59.000Z

333

Is combustion of plastics desirable?  

Science Conference Proceedings (OSTI)

Managing waste will always entail some tradeoffs. All of the three options--recycling, landfilling and combustion--have some disadvantages. Even landfilling, which produces no emissions, fails to take advantage of the energy value inherent in plastic. Waste combustion, on the other hand, recovers the energy in plastic materials and reduces the volume of disposed solid waste by up to 90% of its initial preburn volumes. However, this management option generates emissions and produces an ash residue that must be managed. As demonstrated by recent test burns, improvements in combustion and air-pollution-control technology have dramatically reduced the health risks from emissions and ash. Recent studies have shown that plastics--in quantities even higher than those normally found in municipal solid waste--do not adversely affect levels of emissions or the quality of ash from waste-to-energy facilities. In addition, waste-to-energy facilities may be a relatively economical source of fuel, and may be a more economic solution to waste management than the other available options. A waste-to-energy plant generally produces electricity that is sold to the electric utilities for approximately six cents per kilowatt-hour, a rate that is competitive with those offered by nuclear power plants and power plants that generate energy by burning fossil fuels.

Piasecki, B.; Rainey, D. [Rensselaer Polytechnic Inst., Troy, NY (United States). Lally School of Management and Technology; Fletcher, K.

1998-07-01T23:59:59.000Z

334

NETL: IEP – Post-Combustion CO2 Emissions Control - Characterization and  

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

Characterization and Prediction of Oxy-Combustion Impacts in Existing Coal-fired Boilers Characterization and Prediction of Oxy-Combustion Impacts in Existing Coal-fired Boilers Project No.: DE-NT0005288 Pilot-scale 100 kW oxy-fuel combustor Pilot-scale 100 kW oxy-fuel combustor Reaction Engineering International will conduct multi-scale experiments, coupled with mechanism development and computational fluid dynamics modeling, to evaluate the impacts of retrofitting existing coal-fired boilers for oxy-combustion. Test data will be obtained from oxy-combustion experiments at the 0.1-kilowatt (kW), 100-kW, and 1.2-megawatt scale. Related Papers and Publications: Characterization of Oxy-combustion Impacts in Existing Coal-fired Boilers [PDF-9MB] (Nov 2013) Final Project Review Meeting, Pittsburgh, PA, November 6, 2013. Characterization of Oxy-Combustion Impacts in Existing Coal-Fired Boilers [PDF-1.67MB] (July 2013)

335

Comparative study of combustion product emissions of Pakistani coal briquettes and traditional Pakistani domestic fuels  

DOE Green Energy (OSTI)

A comparative emissions study was conducted on combustion products of various solid domestic cooking fuels; the objective was to compare relative levels of organic and inorganic toxic emissions from traditional Pakistani fuels (wood, wood charcoal, and dried animal dung) with manufactured low-rank coal briquettes (Lakhra and Sor- Range coals) under conditions simulating domestic cooking. A small combustion shed 12 m[sup 3] internal volume, air exchange rate 14 h[sup [minus]1] was used to simulate south Asian cooking rooms. 200-g charges of the various fuels were ignited in an Angethi stove located inside the shed, then combusted to completion; effluents from this combustion were monitored as a function of time. Measurements were made of respirable particulates, volatile and semi-volatile organics, CO, SO[sub 2], and NO[sub x]. Overall it appears that emissions from coal briquettes containing combustion amendments (slaked lime, clay, and potassium nitrate oxidizer) are no greater than emissions from traditional fuels, and in some cases are significantly lower; generally, emissions are highest for all fuels in the early stages of combustion.

Wachter, E.A.; Gammage, R.B.; Haas, J.W. III; Wilson, D.L. (Oak Ridge National Lab., TN (United States)); DePriest, J.C.; Wade, J. (Midwest Technical, Inc., Oak Ridge, TN (United States)); Ahmad, N.; Sibtain, F.; Zahid Raza, M. (Pakistan Council of Scientific and Industrial Research Labs., Karachi (Pakistan))

1992-10-01T23:59:59.000Z

336

Comparative study of combustion product emissions of Pakistani coal briquettes and traditional Pakistani domestic fuels  

DOE Green Energy (OSTI)

A comparative emissions study was conducted on combustion products of various solid domestic cooking fuels; the objective was to compare relative levels of organic and inorganic toxic emissions from traditional Pakistani fuels (wood, wood charcoal, and dried animal dung) with manufactured low-rank coal briquettes (Lakhra and Sor- Range coals) under conditions simulating domestic cooking. A small combustion shed 12 m{sup 3} internal volume, air exchange rate 14 h{sup {minus}1} was used to simulate south Asian cooking rooms. 200-g charges of the various fuels were ignited in an Angethi stove located inside the shed, then combusted to completion; effluents from this combustion were monitored as a function of time. Measurements were made of respirable particulates, volatile and semi-volatile organics, CO, SO{sub 2}, and NO{sub x}. Overall it appears that emissions from coal briquettes containing combustion amendments (slaked lime, clay, and potassium nitrate oxidizer) are no greater than emissions from traditional fuels, and in some cases are significantly lower; generally, emissions are highest for all fuels in the early stages of combustion.

Wachter, E.A.; Gammage, R.B.; Haas, J.W. III; Wilson, D.L. [Oak Ridge National Lab., TN (United States); DePriest, J.C.; Wade, J. [Midwest Technical, Inc., Oak Ridge, TN (United States); Ahmad, N.; Sibtain, F.; Zahid Raza, M. [Pakistan Council of Scientific and Industrial Research Labs., Karachi (Pakistan)

1992-10-01T23:59:59.000Z

337

Sandia Combustion Research Program: Annual report, 1986  

DOE Green Energy (OSTI)

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

338

NISTIR 6458 Characterization of the Inlet Combustion Air in  

E-Print Network (OSTI)

NISTIR 6458 Characterization of the Inlet Combustion Air in NIST's Reference Spray Combustion January 2000 #12;ii Contents page Introduction 1 Reference Spray Combustion Facility 3 Numerical;1 Characterization of the Inlet Combustion Air in NIST's Reference Spray Combustion Facility: Effect of Vane Angle

Magee, Joseph W.

339

System issues and tradeoffs associated with syngas production and combustion  

DOE Green Energy (OSTI)

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

340

Surrogate Model Development for Fuels for Advanced Combustion Engines  

Science Conference Proceedings (OSTI)

The fuels used in internal-combustion engines are complex mixtures of a multitude of different types of hydrocarbon species. Attempting numerical simulations of combustion of real fuels with all of the hydrocarbon species included is highly unrealistic. Thus, a surrogate model approach is generally adopted, which involves choosing a few representative hydrocarbon species whose overall behavior mimics the characteristics of the target fuel. The present study proposes surrogate models for the nine fuels for advanced combustion engines (FACE) that have been developed for studying low-emission, high-efficiency advanced diesel engine concepts. The surrogate compositions for the fuels are arrived at by simulating their distillation profiles to within a maximum absolute error of 4% using a discrete multi-component (DMC) fuel model that has been incorporated in the multi-dimensional computational fluid dynamics (CFD) code, KIVA-ERC-CHEMKIN. The simulated surrogate compositions cover the range and measured concentrations of the various hydrocarbon classes present in the fuels. The fidelity of the surrogate fuel models is judged on the basis of matching their specific gravity, lower heating value, hydrogen/carbon (H/C) ratio, cetane number, and cetane index with the measured data for all nine FACE fuels.

Anand, Krishnasamy [University of Wisconsin, Madison; Ra, youngchul [University of Wisconsin, Madison; Reitz, Rolf [University of Wisconsin; Bunting, Bruce G [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

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

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

Oxy-Combustion Boiler Material Development Oxy-Combustion Boiler Material Development Project No.: DE-NT0005262 CLICK ON IMAGE TO ENLARGE Foster Wheeler Oxy-combustion CFD Graphic The objectives of this Foster Wheeler Corporation-managed program are to assess the corrosion characteristics of oxy-combustion relative to air-fired combustion; identify the corrosion mechanisms involved; and determine the effects of oxy-combustion on conventional boiler tube materials, conventional protective coatings, and alternative materials and coatings when operating with high to low sulfur coals. The program involves the prediction of oxy-combustion gas compositions by computational fluid dynamic calculations, exposure of coupons of boiler materials and coverings coated with coal ash deposit to simulated oxy-combustion gases in electric

342

ENGINE COMBUSTION CONTROL VIA FUEL REACTIVITY ...  

A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a ...

343

Investigation of Solution Combustion Synthesis and Precipitation ...  

Science Conference Proceedings (OSTI)

Presentation Title, Investigation of Solution Combustion Synthesis and Precipitation Synthesis Conditions on TiO2 and ZnO Nanopowder Characteristics

344

High Performance Alloys for Advanced Combustion Systems  

Science Conference Proceedings (OSTI)

For steam turbines, it is necessary to raise temperatures in excess of 700?C. For gas turbines, raising the temperature also works but migrating the combustion ...

345

Session Overview: Heterogeneous Combustion Randall E. Winans...  

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

Heterogeneous Combustion Randall E. Winans, Session Chair X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA Heterogeneous...

346

Pyrolysis reactor and fluidized bed combustion chamber  

DOE Patents (OSTI)

A solid carbonaceous material is pyrolyzed in a descending flow pyrolysis reactor in the presence of a particulate source of heat to yield a particulate carbon containing solid residue. The particulate source of heat is obtained by educting with a gaseous source of oxygen the particulate carbon containing solid residue from a fluidized bed into a first combustion zone coupled to a second combustion zone. A source of oxygen is introduced into the second combustion zone to oxidize carbon monoxide formed in the first combustion zone to heat the solid residue to the temperature of the particulate source of heat.

Green, Norman W. (Upland, CA)

1981-01-06T23:59:59.000Z

347

Combustion Process Contact NETL Technology Transfer Group  

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

the Reactivity and Capacity of Oxygen Carriers for the Chemical Looping Combustion Process Contact NETL Technology Transfer Group techtransfer@netl.doe.gov February 2013 This...

348

Vehicle Technologies Office: Combustion and Emission Control  

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

and fuel formulation to arrive at the most cost-effective approach to optimizing advanced combustion engine efficiency and performance while reducing emissions to near-zero levels....

349

Combustion turbine operation and optimization model.  

E-Print Network (OSTI)

??Combustion turbine performance deterioration, quantified by loss of system power, is an artifact of increased inlet air temperature and continuous degradation of the machine. Furthermore,… (more)

Sengupta, Jeet

2012-01-01T23:59:59.000Z

350

Premixed Combustion of Hydrogen Augmented Natural Gas  

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

premixed combustion * Effective for emission reduction with natural gas * High hydrogen flame speed requires care in premixer design for SGH fuels * UC Irvine study quantifies...

351

International Fuel Technology Inc | Open Energy Information  

Open Energy Info (EERE)

Fuel Technology Inc Fuel Technology Inc Jump to: navigation, search Name International Fuel Technology Inc Place St. Louis, Missouri Zip 63105 Product Supplier of environmentally friendly surfactant-based fuel additives designed to significantly reduce harmful emissions produced from internal combustion engines. References International Fuel Technology Inc[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. International Fuel Technology Inc is a company located in St. Louis, Missouri . References ↑ "International Fuel Technology Inc" Retrieved from "http://en.openei.org/w/index.php?title=International_Fuel_Technology_Inc&oldid=347044" Categories: Clean Energy Organizations

352

Hydrogen program combustion research: Three dimensional computational modeling  

DOE Green Energy (OSTI)

We have significantly increased our computational modeling capability by the addition of a vertical valve model in KIVA-3, code used internationally for engine design. In this report the implementation and application of the valve model is described. The model is shown to reproduce the experimentally verified intake flow problem examined by Hessel. Furthermore, the sensitivity and performance of the model is examined for the geometry and conditions of the hydrogen-fueled Onan engine in development at Sandia National Laboratory. Overall the valve model is shown to have comparable accuracy as the general flow simulation capability in KIVA-3, which has been well validated by past comparisons to experiments. In the exploratory simulations of the Onan engine, the standard use of the single kinetic reaction for hydrogen oxidation was found to be inadequate for modeling the hydrogen combustion because of its inability to describe both the observed laminar flame speed and the absence of autoignition in the Onan engine. We propose a temporary solution that inhibits the autoignition without sacrificing the ability to model spark ignition. In the absence of experimental data on the Onan engine, a computational investigation was undertaken to evaluate the importance of modeling the intake flow on the combustion and NO{sub x} emissions. A simulation that began with the compression of a quiescent hydrogen-air mixture was compared to a simulation of the full induction process with resolved opening and closing of the intake valve. Although minor differences were observed in the cylinder-averaged pressure, temperature, bulk-flow kinetic energy and turbulent kinetic energy, large differences where observed in the hydrogen combustion rate and NO{sub x} emissions. The flow state at combustion is highly heterogeneous and sensitive to the details of the bulk and turbulent flow and that an accurate simulation of the Onan engine must include the modeling of the air-fuel induction.

Johnson, N.L.; Amsden, A.A.; Butler, T.D.

1995-05-01T23:59:59.000Z

353

Analysis of Combustion Chamber Deposits by ESI-TOF-MS and MALDI-TOF-MS  

DOE Green Energy (OSTI)

Combustion chamber deposits (CCDs) in internal combustion engines have been studied by various techniques to understand the relationship of performance degradation with deposit quantity and structure. XPS, XAS, NMR, and elemental analysis have offered insight into the bulk structure of C, H, N, O and metal components [1]. MS has offered some information about compound structure, but results are limited due to the insolubility and complexity of the materials. Recent advances in MS have opened new possibilities for analysis of CCDs. Here we report initial findings on the carbon structure of these deposits determined by ESI-TOF-MS and MADLI-TOF-MS.

Reynolds, J G; Shields, S J; Roos, J W

2001-06-14T23:59:59.000Z

354

COMBUSTION RESEARCH PROGRAM. CHAPTER FROM ENERGY & ENVIRONMENT ANNUAL REPORT 1977  

E-Print Network (OSTI)

Applied to Turbulent Combustion Flows J. W. Daily and C.Metals from Pulverized Coal Combustion P. Sherman and F.Applied to Turbulent Combustion Flows J. W. Daily and C.

Authors, Various

2011-01-01T23:59:59.000Z

355

Manifold methods for methane combustion  

SciTech Connect

Objective is to develop a new method for studying realistic chemistry in turbulent methane combustion with NO{sub x} mechanism. The realistic chemistry is a simplification to a more detailed chemistry based on the manifold method; accuracy is determined by interaction between the transport process and the chemical reaction. In this new (tree) method, probability density function or partially stirred reactor calculations are performed. Compared with the reduced mechanism, manifold, and tabulation methods, the new method overcomes drawbacks of the reduced mechanism method and preserves the advantages of the manifold method. Accuracy is achieved by specifying the size of the cell.

Yang, B.; Pope, S.B. [Cornell Univ., Ithaca, NY (United States)

1995-12-31T23:59:59.000Z

356

Nanotechnology Combustion Sensors: Prototype Development  

Science Conference Proceedings (OSTI)

The release of nitrogen oxides (NOx) and sulfur dioxide (SO2) from the combustion of fossil fuels and other sources is linked to various ecosystem impacts and human health effects, including acid rain, coastal eutrophication, damage to forest ecosystems, chronic bronchitis, respiratory problems, and heart attacks. The U.S. Environmental Protection Agency (EPA) estimates that in 2003, total NOx and SO2 emissions from various sources in the United States were 20.8 million tons and 15.9 million tons, respec...

2008-12-23T23:59:59.000Z

357

Combustion Properties of Biomass Flash Pyrolysis Oils: Final Project Report  

SciTech Connect

Thermochemical pyrolysis of solid biomass feedstocks, with subsequent condensation of the pyrolysis vapors, has been investigated in the U.S. and internationally as a means of producing a liquid fuel for power production from biomass. This process produces a fuel with significantly different physical and chemical properties from traditional petroleum-based fuel oils. In addition to storage and handling difficulties with pyrolysis oils, concern exists over the ability to use this fuel effectively in different combustors. The report endeavors to place the results and conclusions from Sandia's research into the context of international efforts to utilize pyrolysis oils. As a special supplement to this report, Dr. Steven Gust, of Finland's Neste Oy, has provided a brief assessment of pyrolysis oil combustion research efforts and commercialization prospects in Europe.

C. R. Shaddix; D. R. Hardesty

1999-04-01T23:59:59.000Z

358

Combustion Properties of Biomass Flash Pyrolysis Oils: Final Project Report  

DOE Green Energy (OSTI)

Thermochemical pyrolysis of solid biomass feedstocks, with subsequent condensation of the pyrolysis vapors, has been investigated in the U.S. and internationally as a means of producing a liquid fuel for power production from biomass. This process produces a fuel with significantly different physical and chemical properties from traditional petroleum-based fuel oils. In addition to storage and handling difficulties with pyrolysis oils, concern exists over the ability to use this fuel effectively in different combustors. The report endeavors to place the results and conclusions from Sandia's research into the context of international efforts to utilize pyrolysis oils. As a special supplement to this report, Dr. Steven Gust, of Finland's Neste Oy, has provided a brief assessment of pyrolysis oil combustion research efforts and commercialization prospects in Europe.

C. R. Shaddix; D. R. Hardesty

1999-04-01T23:59:59.000Z

359

Sandia combustion research program: Annual report, 1987  

DOE Green Energy (OSTI)

More than a decade ago, in response to a national energy crisis, Sandia proposed to the US Department of Energy a new, ambitious program in combustion research. Our strategy was to apply the rapidly increasing capabilities in lasers and computers to combustion science and technology. 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 universities, industry, and national laboratories--to improve our understanding and control of combustion. This report includes descriptions of several research projects which have been stimulated by Working Groups and involve the on-site participation of industry scientists. DOE's Industry Technology Fellowship Program has been instrumental in the success of some of the joint efforts. The remainder of this report presents research results of calendar year 1987, separated thematically into nine categories. Refereed journal articles appearing in print during 1987, along with selected other publications, are included at the end of Section 10. In addition to our ''traditional'' research--chemistry, reacting flow, diagnostics, engine combustion, and coal combustion--you will note continued progress in somewhat recent themes: pulse combustion, high temperature materials, and energetic materials, for example. Moreover, we have just started a small, new effort to understand combustion-related issues in the management of toxic and hazardous materials.

Palmer, R.E.; Sanders, B.R.; Ivanetich, C.A. (eds.)

1988-01-01T23:59:59.000Z

360

TURBULENT FRBRNNING MVK 130 Turbulent Combustion  

E-Print Network (OSTI)

TURBULENT F�RBR�NNING MVK 130 Turbulent Combustion Antal poäng: 3.0. Valfri för: M4. Kursansvarig program med hänsyn till de modeller som används. Litteratur S.R. Turns: An introduction to combustion, Mc

Note: This page contains sample records for the topic "internal combustion maglev" 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

Application of Computed Tomography to Microgravity Combustion  

Science Conference Proceedings (OSTI)

This paper describes applications of computed tomography (CT) to combustion phenomena under microgravity conditions. Infrared Thermography (IT) has been considered as a promising method for two-dimensional measurement of flames. We have applied IT to ... Keywords: computed tomography, diffusion flame, infrared thermography, microgravity combustion, spectroscopy

H. Sato; K. Itoh; M. Shimizu; S. Hayashi; Y. Fujimori; K. Maeno

1999-12-01T23:59:59.000Z

362

Oscillating combustion from a premix fuel nozzle  

DOE Green Energy (OSTI)

Stringent emissions requirements for stationary gas turbines have produced new challenges in combustor design. In the past, very low NOx pollutant emissions have been achieved through various combustion modifications, such as steam or water injection, or post-combustion cleanup methods such as selective catalytic reduction (SCR). An emerging approach to NOx abatement is lean premix combustion. Lean premix combustion avoids the cost and operational problems associated with other NOx control methods. By premixing fuel and air at very low equivalence ratios, the high temperatures which produce NOx are avoided. The challenges of premix combustion include avoiding flashback, and ensuring adequate fuel/air premixing. In addition, the combustion must be stable. The combustor should not operate so close to extinction that a momentary upset will extinguish the flame (static stability), and the flame should not oscillate (dynamic stability). Oscillations are undesirable because the associated pressure fluctuations can shorten component lifetime. Unfortunately, experience has shown that premix fuel nozzles burning natural gas are susceptible to oscillations. Eliminating these oscillations can be a costly and time consuming part of new engine development. As part of the U.S. Department of Energy`s Advanced Turbine Systems Program, the Morgantown Energy Technology Center (METC) is investigating the issue of combustion oscillations produced by lean premix fuel nozzles. METC is evaluating various techniques to stabilize oscillating combustion in gas turbines. Tests results from a premix fuel nozzle using swirl stabilization and a pilot flame are reported here.

Richards, G.A.; Yip, M.J.

1995-08-01T23:59:59.000Z

363

High resolution fossil fuel combustion CO2 emission fluxes for...  

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

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

364

Vehicle Technologies Office: Materials for High Efficiency Combustion...  

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

High Efficiency Combustion Engines to someone by E-mail Share Vehicle Technologies Office: Materials for High Efficiency Combustion Engines on Facebook Tweet about Vehicle...

365

Method of launching a missile using secondary combustion  

SciTech Connect

A method is described of selectively increasing the energy output of a gas generator utilized to launch a missile from a launch tube without igniting the missile until after it is launched from the tube comprising the steps of: providing combustible products in the products of combustion produced by primary combustion within the gas generator; providing varying quantities of oxidant in the launch tube to burn the combustible products in the products of combustion produced by the gas generator; and controlling the temperature of the products of combustion produced by the gas generator to permit secondary combustion of the combustible products.

Erikson, E.E.

1987-06-09T23:59:59.000Z

366

NREL: Vehicles and Fuels Research - Advanced Combustion and Fuels...  

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

Advanced Combustion and Fuels Projects NREL's advanced combustion and fuels projects bridge fundamental chemical kinetics and engine research to investigate how new vehicle fuels...

367

Finite-Rate Chemistry Effects in Turbulent Premixed Combustion.  

E-Print Network (OSTI)

??In recent times significant public attention has been drawn to the topic of combustion. This has been due to the fact that combustion is the… (more)

Dunn, Matthew John

2008-01-01T23:59:59.000Z

368

Study on the Combustion Characteristics and Kinetics of Blending ...  

Science Conference Proceedings (OSTI)

The changes of combustion characteristic parameters o f pulverized coals are analyzed. The results show that DTG curves of coal combustion move to low ...

369

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 Fossil fuel fired electric generating plants are the cornerstone of America's central power system....

370

FEMP Technology Brief: Boiler Combustion Control and Monitoring...  

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

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...

371

Groundbreaking Combustion Research by LBNL Featured on Cover...  

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

matches a combustion experiment. Gaining a better understanding of combustion, which powers everything from automobiles to aircraft to power generating plants, can help improve...

372

Pages that link to "Coal Combustion By-Products (Maryland)" ...  

Open Energy Info (EERE)

Edit History Share this page on Facebook icon Twitter icon Pages that link to "Coal Combustion By-Products (Maryland)" Coal Combustion By-Products (Maryland) Jump to:...

373

Changes related to "Coal Combustion By-Products (Maryland)" ...  

Open Energy Info (EERE)

Special page Share this page on Facebook icon Twitter icon Changes related to "Coal Combustion By-Products (Maryland)" Coal Combustion By-Products (Maryland) Jump to:...

374

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

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

tool Conducting CFD-aided design of a novel staged combustion vessel and radiative heat exchanger Performing lab-scale experiments of staged combustion without flue gas...

375

Coal combustion science. Quarterly progress report, April 1994--June 1994  

Science Conference Proceedings (OSTI)

Research on coal combustion continued. This report presents results on: kinetics and mechanisms of coal char combustion, and deposit growth and property development in coal-fired furnaces.

Hardesty, D.R. [ed.; Baxter, L.L.; Davis, K.A.

1995-07-01T23:59:59.000Z

376

Multi-stage combustion using nitrogen-enriched air - Energy ...  

Multi-stage combustion technology combined with nitrogen-enriched air technology for controlling the combustion temperature and products to extend the maintenance and ...

377

Measurement and Mapping of Pulse Combustion Impingement Heat Transfer Rates .  

E-Print Network (OSTI)

??Current research shows that pulse combustion impingement drying is an improvement over the steady impingement drying currently in commercial use. Pulse combustion impingement has higher… (more)

Hagadorn, Charles C., III

2005-01-01T23:59:59.000Z

378

Improving the Carbon Dioxide Emission Estimates from the Combustion...  

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

the Carbon Dioxide Emission Estimates from the Combustion of Fossil Fuels in California Title Improving the Carbon Dioxide Emission Estimates from the Combustion of Fossil Fuels in...

379

NETL: Pre-Combustion Carbon Capture by a Nanoporous, Superhydrophobic...  

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

Pre-Combustion Carbon Capture by a Nanoporous, Superhydrophobic Membrane Contactor Process Project No.: DE-FE0000646 The Gas Technology Institute is developing a pre-combustion...

380

Study of abnormal combustion oscillations in gas fired appliances.  

E-Print Network (OSTI)

??The thesis work discusses abnormal combustion noise in gas-fired appliances. An experimental model was made to provide insight into the causes of abnormal combustion noises.… (more)

Kumar, Dasari

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

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

Science Conference Proceedings (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

382

Oxy-coal Combustion Studies  

SciTech Connect

The objective of this project is to move toward the development of a predictive capability with quantified uncertainty bounds for pilot-scale, single-burner, oxy-coal operation. This validation research brings together multi-scale experimental measurements and computer simulations. The combination of simulation development and validation experiments is designed to lead to predictive tools for the performance of existing air fired pulverized coal boilers that have been retrofitted to various oxy-firing configurations. In addition, this report also describes novel research results related to oxy-combustion in circulating fluidized beds. For pulverized coal combustion configurations, particular attention is focused on the effect of oxy-firing on ignition and coal-flame stability, and on the subsequent partitioning mechanisms of the ash aerosol. To these ends, the project has focused on the following: â?˘ The development of reliable Large Eddy Simulations (LES) of oxy-coal flames using the Direct Quadrature Method of Moments (DQMOM) (Subtask 3.1). The simulations were validated for both non-reacting particle-laden jets and oxy-coal flames. â?˘ The modifications of an existing oxy-coal combustor to allow operation with high levels of input oxygen to enable in-situ laser diagnostic measurements as well as the development of strategies for directed oxygen injection (Subtask 3.2). Flame stability was quantified for various burner configurations. One configuration that was explored was to inject all the oxygen as a pure gas within an annular oxygen lance, with burner aerodynamics controlling the subsequent mixing. â?˘ The development of Particle Image Velocimetry (PIV) for identification of velocity fields in turbulent oxy-coal flames in order to provide high-fidelity data for the validation of oxy-coal simulation models (Subtask 3.3). Initial efforts utilized a laboratory diffusion flame, first using gas-fuel and later a pulverized-coal flame to ensure the methodology was properly implemented and that all necessary data and image-processing techniques were fully developed. Success at this stage of development led to application of the diagnostics in a large-scale oxy-fuel combustor (OFC). â?˘ The impact of oxy-coal-fired vs. air-fired environments on SO{sub x} (SO{sub 2}, SO{sub 3}) emissions during coal combustion in a pilot-scale circulating fluidized-bed (CFB) (Subtask 3.4). Profiles of species concentration and temperature were obtained for both conditions, and profiles of temperature over a wide range of O{sub 2} concentration were studied for oxy-firing conditions. The effect of limestone addition on SO{sub 2} and SO{sub 3} emissions were also examined for both air- and oxy- firing conditions. â?˘ The investigation of O{sub 2}/CO{sub 2} and O{sub 2}/N{sub 2} environments on SO{sub 2 emissions during coal combustion in a bench-scale single-particle fluidized-bed reactor (Subtask 3.5). Moreover, the sulfation mechanisms of limestone in O{sub 2}/CO{sub 2} and O{sub 2}/N{sub 2} environments were studied, and a generalized gassolid and diffusion-reaction single-particle model was developed to study the effect of major operating variables. â?˘ The investigation of the effect of oxy-coal combustion on ash formation, particle size distributions (PSD), and size-segregated elemental composition in a drop-tube furnace and the 100 kW OFC (Subtask 3.6). In particular, the effect of coal type and flue gas recycle (FGR, OFC only) was investigated.

J. Wendt; E. Eddings; J. Lighty; T. Ring; P. Smith; J. Thornock; Y. Jia, W. Morris; J. Pedel; D. Rezeai; L. Wang; J. Zhang; K. Kelly

2012-01-01T23:59:59.000Z

383

Advanced Combustion Technologies | Department of Energy  

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

Science & Innovation » Clean Coal » Advanced Combustion Science & Innovation » Clean Coal » Advanced Combustion Technologies Advanced Combustion Technologies Joe Yip, a researcher at FE's National Energy Technology Laboratory, uses laser-based Rayleigh light scattering to measure flame density and speed over a flat flame burner. Oxyfuel combustion, using oxygen in place of air with diluents such as steam or carbon dioxide, can reduce pollutant emissions in advanced power cycles using gas turbines. Photo courtesy of NETL Multimedia. Joe Yip, a researcher at FE's National Energy Technology Laboratory, uses laser-based Rayleigh light scattering to measure flame density and speed over a flat flame burner. Oxyfuel combustion, using oxygen in place of air with diluents such as steam or carbon dioxide, can reduce pollutant

384

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.

385

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

386

Accounting for Carbon Dioxide Emissions from Biomass Energy Combustion (released in AEO2010)  

Reports and Publications (EIA)

CO2 emissions from the combustion of biomass [75] to produce energy are excluded from the energy-related CO2 emissions reported in AEO2010. According to current international convention, carbon released through biomass combustion is excluded from reported energy-related emissions. The release of carbon from biomass combustion is assumed to be balanced by the uptake of carbon when the feedstock is grown, resulting in zero net emissions over some period of time]. However, analysts have debated whether increased use of biomass energy may result in a decline in terrestrial carbon stocks, leading to a net positive release of carbon rather than the zero net release assumed by its exclusion from reported energy-related emissions.

Information Center

2010-05-11T23:59:59.000Z

387

Internal Communication  

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

9 Internal Communication Process 11_0303 Page 1 of 6 9 Internal Communication Process 11_0303 Page 1 of 6 EOTA - Business Process Document Title: Internal Communication Process Document Number: P-009 Rev 11_0303 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: Q-001 Quality Manual Notify of Changes: EOTA Employees Referenced Document(s): N/A P-009 Internal Communication Process 11_0303 Page 2 of 6 Revision History: Rev. Description of Change A Initial Release 09_0902 Modified process to better fit current practice. 10_0831 Added verbiage to clarify process. Added initiation phrase to process steps. 11_0303 Added QAM to the last step and made minor editorial updates. P-009 Internal Communication Process 11_0303 Page 3 of 6 I. Purpose

388

Combustion turbine repowering: Final report  

SciTech Connect

The study discusses the findings of a conceptual site-specific investigation into the feasibility of repowering an existing reheat fossil unit utilizing combustion turbines. It identifies a potentially attractive repowering project, through the evaluation and selective elimination of a large number of alternatives. A conceptual design is performed on the selected alternative. Capital costs are developed for this alternative including new equipment and modifications to existing equipment. The results of an economic evaluation and sensitivity analysis are presented, to serve as a basis for a decision on whether or not to proceed with final design, procurement, and construction of the system. The steps presented in the report are intended to provide for the utility industry a detailed methodology for investigating repowering at a specific utility site. 4 refs., 21 figs., 15 tabs.

Oliker, I.; Silaghy, F.J.

1987-11-01T23:59:59.000Z

389

Advances in pulverized coal combustion  

Science Conference Proceedings (OSTI)

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

390

Annual Report: Advanced Combustion (30 September 2012)  

SciTech Connect

The Advanced Combustion Project addresses fundamental issues of fire-side and steam-side corrosion and materials performance in oxy-fuel combustion environments and provides an integrated approach into understanding the environmental and mechanical behavior such that environmental degradation can be ameliorated and long-term microstructural stability, and thus, mechanical performance can lead to longer lasting components and extended power plant life. The technical tasks of this effort are Oxy-combustion Environment Characterization, Alloy Modeling and Life Prediction, and Alloy Manufacturing and Process Development.

Hawk, Jeffrey [NETL] [NETL; Richards, George

2012-09-30T23:59:59.000Z

391

Post combustion trials at Dofasco's KOBM furnace  

DOE Green Energy (OSTI)

Post combustion trials were conducted at Dofasco's 300 tonne KOBM furnace as part of the AISI Direct Steelmaking Program. The purpose of the project work was to measure the post combustion ratio (PCR) and heat transfer efficiency (HTE) of the post combustion reaction in a full size steelmaking vessel. A method of calculating PCR and HTE using off gas analysis and gas temperature was developed. The PCR and HTE were determined under normal operating conditions. Trials assessed the effect of lance height, vessel volume, foaming slag and pellet additions on PCR and HTE.

Farrand, B.L.; Wood, J.E.; Goetz, F.J.

1992-01-01T23:59:59.000Z

392

Greenpeace International  

E-Print Network (OSTI)

report 2 nd edition 2011 japan energy scenario“will we look into the eyes of our children and confess that we had the opportunity, but lacked the courage? that we had the technology, but lacked the vision?” Greenpeace International,

Energy Council; Erec Arthouros Zervos; Sven Teske; Junichi Sato; Hisayo Takada; Image Rice Fields In Kamikatsu; Wolfram Krewitt Dr. Thomas; Sydney Jay Rutovitz; Nicky Ison; Iida Hironao Matsubara

2011-01-01T23:59:59.000Z

393

Coal Combustion Science quarterly progress report, April--June 1990  

SciTech Connect

This document provides a quarterly status report of the Coal Combustion Science Program that is being conducted at the Combustion, Research Facility, Sandia National Laboratories, Livermore, California. Coal devolatilization, coal char combustion, and fate of mineral matter during coal combustion. 56 refs., 25 figs., 13 tabs.

Hardesty, D.R. (ed.); Baxter, L.L.; Fletcher, T.H.; Mitchell, R.E.

1990-11-01T23:59:59.000Z

394

Using Biofuel Tracers to Study Alternative Combustion Regimes  

E-Print Network (OSTI)

Wood, “Investigation of the Fate of Specific Hydrocarbon Fuel Components in Diesel Engine Combustion

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

2006-01-01T23:59:59.000Z

395

Using Biofuel Tracers to Study Alternative Combustion Regimes  

E-Print Network (OSTI)

Section B (NIMB) Using Biofuel Tracers to Study Alternativeinjection. We investigate biofuel HCCI combustion, and use

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

2006-01-01T23:59:59.000Z

396

Pulse combustion: an assessment of opportunities for increased efficiency  

SciTech Connect

The results of a literature review on pulse combustion are discussed. Current, near-future, and potential opportunities for pulse combustion applications are summarized, and the barriers to developing and using pulse combustion technology are discussed, along with research and development needs. Also provided are the proceedings of a pulse combustion workshop held in May, 1984 in Seattle, Washington. (LEW)

Brenchley, D.L.; Bomelburg, H.J.

1984-12-01T23:59:59.000Z

397

Computationally efficient implementation of combustion chemistry in parallel PDF calculations  

Science Conference Proceedings (OSTI)

In parallel calculations of combustion processes with realistic chemistry, the serial in situ adaptive tabulation (ISAT) algorithm [S.B. Pope, Computationally efficient implementation of combustion chemistry using in situ adaptive tabulation, Combustion ... Keywords: 07.05.Mh, 46.15.-x, 47.11.-j, Combustion chemistry, Distribution strategy, ISAT, Load balance, Parallel calculation

Liuyan Lu; Steven R. Lantz; Zhuyin Ren; Stephen B. Pope

2009-08-01T23:59:59.000Z

398

Proceedings of the Combustion Institute, Volume 28, 2000/pp. 16631669 COMBUSTION CHEMISTRY OF PROPANE: A CASE STUDY OF DETAILED  

E-Print Network (OSTI)

1663 Proceedings of the Combustion Institute, Volume 28, 2000/pp. 1663­1669 COMBUSTION CHEMISTRY Detailed chemical reaction mechanisms describing hydrocarbon combustion chemistry are conceptually to small-hydrocarbon combustion data are secure foundations upon which to optimize the rate parameters

Wang, Hai

399

Progress in Energy and Combustion Science 34 (2008) 377416 Discrete reaction waves: Gasless combustion of solid powder mixtures  

E-Print Network (OSTI)

Progress in Energy and Combustion Science 34 (2008) 377­416 Discrete reaction waves: Gasless combustion of solid powder mixtures A.S. Mukasyana,�, A.S. Rogachevb a Department of Chemical Abstract This review considers a specific domain in combustion science, so-called discrete combustion waves

Mukasyan, Alexander

400

Combustion, Explosion, and Shock Waves, Vol. 46, No. 3, pp. , 2010 Combustion of Heterogeneous Nanostructural Systems (Review)  

E-Print Network (OSTI)

Combustion, Explosion, and Shock Waves, Vol. 46, No. 3, pp. ­, 2010 Combustion of Heterogeneous submitted November 26, 2009. The current status of research in the field of combustion of heterogeneous mechanisms of combustion in such systems and prospects of their further applications are discussed. Key words

Mukasyan, Alexander

Note: This page contains sample records for the topic "internal combustion maglev" 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
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401

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

402

Combustion properties of Kraft Black Liquors  

DOE Green Energy (OSTI)

In a previous study of the phenomena involved in the combustion of black liquor droplets a numerical model was developed. The model required certain black liquor specific combustion information which was then not currently available, and additional data were needed for evaluating the model. The overall objectives of the project reported here was to provide experimental data on key aspects of black liquor combustion, to interpret the data, and to put it into a form which would be useful for computational models for recovery boilers. The specific topics to be investigated were the volatiles and char carbon yields from pyrolysis of single black liquor droplets; a criterion for the onset of devolatilization and the accompanying rapid swelling; and the surface temperature of black liquor droplets during pyrolysis, combustion, and gasification. Additional information on the swelling characteristics of black liquor droplets was also obtained as part of the experiments conducted.

Frederick, W.J. Jr.; Hupa, M. (Aabo Akademi, Turku (Finland))

1993-04-01T23:59:59.000Z

403

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":""}]}

404

Control of NOx by combustion process modifications  

E-Print Network (OSTI)

A theoretical and experimental study was carried out to determine lower bounds of NOx emission from staged combustion of a 0.7%N #6 fuel oil. Thermodynamic and chemical kinetic calculations have shown minimum NOx emissions ...

Ber?, J. M.

1981-01-01T23:59:59.000Z

405

Coal Combustion By-Products (Maryland)  

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

The Department of the Environment is responsible for regulating fugitive air emissions from the transportation of coal combustion by-products and the permissible beneficial uses of these by...

406

Combustion systems for power-MEMS applications  

E-Print Network (OSTI)

As part of an effort to develop a micro-scale gas turbine engine for power generation and micro-propulsion applications, this thesis presents the design, fabrication, experimental testing, and modeling of the combustion ...

Spadaccini, Christopher M. (Christopher Michael), 1974-

2004-01-01T23:59:59.000Z

407

Simplifying Chemistry for Computational Efficiency in Combustion...  

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

Simplifying Chemistry for Computational Efficiency in Combustion Calculations Speaker(s): Shaheen Tonse Date: February 28, 2002 - 12:00pm Location: Bldg. 90 Seminar HostPoint of...

408

Predicting combustion properties of hydrocarbon fuel mixtures  

E-Print Network (OSTI)

In this thesis, I applied computational quantum chemistry to improve the accuracy of kinetic mechanisms that are used to model combustion chemistry. I performed transition state theory calculations for several reactions ...

Goldsmith, Claude Franklin, III

2010-01-01T23:59:59.000Z

409

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

410

Chemical Characterization of Fossil Fuel Combustion Wastes  

Science Conference Proceedings (OSTI)

Fossil fuel combustion wastes differ considerably in total composition and in the key chemical characteristics of their extracts, making leachate composition difficult to predict. A new mechanistic approach, however, shows promise for more-accurate prediction.

1987-08-26T23:59:59.000Z

411

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

412

Active combustion control : modeling, design and implementation  

E-Print Network (OSTI)

Continuous combustion systems common in propulsion and power generation applications are susceptible to thermoacoustic instability, which occurs under lean burn conditions close to the flammability where most emissions and ...

Park, Sungbae, 1973-

2004-01-01T23:59:59.000Z

413

Flex-flame burner and combustion method  

DOE Patents (OSTI)

A combustion method and apparatus which produce a hybrid flame for heating metals and metal alloys, which hybrid flame has the characteristic of having an oxidant-lean portion proximate the metal or metal alloy and having an oxidant-rich portion disposed above the oxidant lean portion. This hybrid flame is produced by introducing fuel and primary combustion oxidant into the furnace chamber containing the metal or metal alloy in a substoichiometric ratio to produce a fuel-rich flame and by introducing a secondary combustion oxidant into the furnace chamber above the fuel-rich flame in a manner whereby mixing of the secondary combustion oxidant with the fuel-rich flame is delayed for a portion of the length of the flame.

Soupos, Vasilios (Chicago, IL); Zelepouga, Serguei (Hoffman Estates, IL); Rue, David M. (Chicago, IL); Abbasi, Hamid A. (Naperville, IL)

2010-08-24T23:59:59.000Z

414

Engine combustion control via fuel reactivity stratification  

Science Conference Proceedings (OSTI)

A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choose the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

Reitz, Rolf Deneys; Hanson, Reed M; Splitter, Derek A; Kokjohn, Sage L

2013-12-31T23:59:59.000Z

415

Operational Flexibility Guidelines for Gas Turbine Low NOx Combustion Systems  

Science Conference Proceedings (OSTI)

Gas turbine low-NOx combustion systems can differ in hardware from manufacturer to manufacturer, but the principle is the same. Low-NOx combustors reduce peak flame temperatures by mixing fuel and air before combustion and by keeping the fuel-to-air ratio as low (lean) as possible, while still maintaining combustion stability over the broadest possible operating range. Low-NOx combustion systems are inherently more complex than diffusion combustion systems, a fact that impacts operational flexibility, re...

2011-12-14T23:59:59.000Z

416

Combustion Turbine Experience and Intelligence Reports: 2007  

Science Conference Proceedings (OSTI)

Combustion turbine (CT) efficiency improvements coupled with heat recovery bottoming steam cycles has risen dramatically over the past 20 years. Much of this improvement is attributed to gas turbine technology transferred from military and commercial aircraft design. This technology advantage coupled with lower emissions inherent to natural gas combustion has effectively set the standard for new large generation additions in many regions. However, there are many concerns and issues related to effectively...

2008-03-27T23:59:59.000Z

417

Fundamental Studies in Syngas Premixed Combustion Dynamics  

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

Studies Studies in Syngas Premixed Combustion Dynamics Ahmed F. Ghoniem, Anuradha M. Annaswamy, Raymond L. Speth, H. Murat Altay Massachusetts Institute of Technology SCIES Project 05-01-SR121 Project Awarded (08/01/2005, 36 Month Duration) Needs & Objectives Gas Turbine Needs Flexibility to operate with variable syngas compositions Ensure stable operation over a wide range of conditions Reduce emissions of CO and NO x Project Objectives Study experimentally lean premixed syngas combustion

418

Oxy-combustion: Oxygen Transport Membrane Development  

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

combustion: Oxygen Transport combustion: Oxygen Transport Membrane Development Background The mission of the U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental regulations. The EPEC R&D

419

Building America Expert Meeting: Combustion Safety  

SciTech Connect

This is a meeting overview of 'The Best Approach to Combustion Safety in a Direct Vent World', held June 28, 2012, in San Antonio, Texas. The objective of this Expert Meeting was to identify gaps and barriers that need to be addressed by future research, and to develop data-driven technical recommendations for code updates so that a common approach for combustion safety can be adopted by all members of the building energy efficiency and code communities.

Brand, L.

2013-03-01T23:59:59.000Z

420

Combustion Turbine Experience and Intelligence Reports: 2006  

Science Conference Proceedings (OSTI)

Generation markets worldwide present both business opportunities and challenges for combustion turbine plant owners, operators, and project developers. EPRI's comprehensive Combustion Turbine/Combined Cycle (CT/CC) program provides a range of tools, methodologies, and approaches to help owner/operators and project developers face these challenges and prosper in this evolving marketplace. The rising cost of fuel gas is the dominant issue in today's market. The EPRI CT Experience and intelligence Reports (...

2007-03-27T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

Combustion Turbine Experience and Intelligence Report: 2010  

Science Conference Proceedings (OSTI)

Generation markets worldwide present both business opportunities and challenges for combustion turbine plant owners, operators, and project developers. EPRI's comprehensive Combustion Turbine/Combined Cycle (CT/CC) program provides a range of tools, methodologies, and approaches to help owner/operators and project developers face these challenges and prosper in this evolving marketplace. The rising cost of fuel gas is the dominant issue in today's market. The EPRI CT Experience and Intelligence Reports (...

2010-12-14T23:59:59.000Z

422

Combustion Turbine Experience and Intelligence Report: 2005  

Science Conference Proceedings (OSTI)

Generation markets worldwide present both business opportunities and challenges for combustion turbine plant owners, operators, and project developers. EPRI's comprehensive Combustion Turbine/Combined Cycle (CT/CC) program provides a range of tools, methodologies, and approaches to help owner/operators and project developers face these challenges and prosper in this evolving marketplace. The rising cost of fuel gas is the dominant issue in today's market. The EPRI CT Experience and Intelligence Reports (...

2006-03-06T23:59:59.000Z

423

Oxy-Combustion Activities Worldwide: 2013 Update  

Science Conference Proceedings (OSTI)

This report provides a review of oxy-combustion development activities throughout the world, most of which occurred in the calendar year of 2013. The report opens by introducing oxy-combustion and discussing its relative advantages and disadvantages and associated costs. It then delves into each sub-system (air separation, oxy boiler, gas quality control system [GQCS], and carbon dioxide [CO2] purification) giving the latest updates on technologies and associated development issues in ...

2013-12-18T23:59:59.000Z

424

Combustion Turbine Experience and Intelligence Report: 2008  

Science Conference Proceedings (OSTI)

Combustion turbine (CT) efficiency improvements, coupled with heat recovery bottoming steam cycles, have risen dramatically over the past 20 years. Much improvement is attributed to gas turbine technology transferred from military and commercial aircraft design. This technology advantage in combination with the lower emissions inherent to natural gas combustion has effectively set the standard for new large generation additions in many regions. However, there are many concerns and issues related to effec...

2009-03-23T23:59:59.000Z

425

Eulerian multi-fluid models for the simulation of dynamics and coalescence of particles in solid propellant combustion  

Science Conference Proceedings (OSTI)

The accurate simulation of polydisperse sprays undergoing coalescence in unsteady gaseous flows is a crucial issue. In solid rocket motors, the internal flow depends strongly on the alumina droplet size distribution, which spreads up with coalescence. ... Keywords: Adaptive quadrature for coalescence integrals, Aluminum oxide droplets, CEDRE code, High order Eulerian multi-fluid model, Polydisperse spray, Solid propellant combustion

F. Doisneau; F. Laurent; A. Murrone; J. Dupays; M. Massot

2013-02-01T23:59:59.000Z

426

Dust Combustion Safety Issues for Fusion Applications  

SciTech Connect

This report summarizes the results of a safety research task to identify the safety issues and phenomenology of metallic dust fires and explosions that are postulated for fusion experiments. There are a variety of metal dusts that are created by plasma erosion and disruptions within the plasma chamber, as well as normal industrial dusts generated in the more conventional equipment in the balance of plant. For fusion, in-vessel dusts are generally mixtures of several elements; that is, the constituent elements in alloys and the variety of elements used for in-vessel materials. For example, in-vessel dust could be composed of beryllium from a first wall coating, tungsten from a divertor plate, copper from a plasma heating antenna or diagnostic, and perhaps some iron and chromium from the steel vessel wall or titanium and vanadium from the vessel wall. Each of these elements has its own unique combustion characteristics, and mixtures of elements must be evaluated for the mixture’s combustion properties. Issues of particle size, dust temperature, and presence of other combustible materials (i.e., deuterium and tritium) also affect combustion in air. Combustion in other gases has also been investigated to determine if there are safety concerns with “inert” atmospheres, such as nitrogen. Several coolants have also been reviewed to determine if coolant breach into the plasma chamber would enhance the combustion threat; for example, in-vessel steam from a water coolant breach will react with metal dust. The results of this review are presented here.

L. C. Cadwallader

2003-05-01T23:59:59.000Z

427

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

428

Internal Dosimetry  

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

MEASUREMENT MEASUREMENT SENSITIVE DOE-STD-1121-2008 Change Notice No.1 October 2013 DOE STANDARD INTERNAL DOSIMETRY U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document is available on the Department of Energy Technical Standards Program Web Site at http://energy.gov/hss/information-center/department-energy- technical-standards-program ii Change Notice 1. Internal Dosimetry DOE-STD-1121-2008 Page/Section Change Throughout Change: airborne contamination To: airborne radioactivity Section 1.5, p. 4 Change: HPS N 13.1-1999 To: HPS N 13.1-2011 Section 1.5, p. 4 Change: HPS N 13.6-1999 To: HPS N 13,.6-2010 Section 1.5, p. 4 Delete: HPS N 13.14-1994, Internal Dosimetry Programs for

429

Pressurized fluidized-bed combustion  

Science Conference Proceedings (OSTI)

The US DOE pressurized fluidized bed combustion (PFBC) research and development program is designed to develop the technology and data base required for the successful commercialization of the PFBC concept. A cooperative program with the US, West Germany, and the UK has resulted in the construction of the 25 MWe IEA-Grimethorpe combined-cycle pilot plant in England which will be tested in 1981. A 13 MWe coal-fired gas turbine (air cycle) at Curtis-Wright has been designed and construction scheduled. Start-up is planned to begin in early 1983. A 75 MWe pilot plant is planned for completion in 1986. Each of these PFBC combined-cycle programs is discussed. The current status of PFB technology may be summarized as follows: turbine erosion tolerance/hot gas cleanup issues have emerged as the barrier technology issues; promising turbine corrosion-resistant materials have been identified, but long-term exposure data is lacking; first-generation PFB combustor technology development is maturing at the PDU level; however, scale-up to larger size has not been demonstrated; and in-bed heat exchanger materials have been identified, but long-term exposure data is lacking. The DOE-PFB development plan is directed at the resolution of these key technical issues. (LCL)

Not Available

1980-10-01T23:59:59.000Z

430

Activity 35 Internal Presentation  

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

1 Current and Future Technologies for Power Generation with Post-Combustion Carbon Capture Robert Stevens National Energy Technology Laboratory 2012 NETL CO 2 Capture Technology...

431

THE FURNACE COMBUSTION AND RADIATION CHARACTERISTICS OF METHANOL AND A METHANOL/COAL SLURRY  

E-Print Network (OSTI)

1973) Enthalpies of Combustion and Maximum Temperatures ofBurner Assembly Combustion Chamber Exhaust System. . CHAPTERIlMeasurement of NO and N02 in Combustion Systems," Western

Grosshandler, W.L.

2010-01-01T23:59:59.000Z

432

A Topological Framework for the Interactive Exploration of Large Scale Turbulent Combustion  

E-Print Network (OSTI)

comparison of terascale combustion simulation data. Mathe-premixed hydrogen ?ames. Combustion and Flame, [7] J. L.of Large Scale Turbulent Combustion Peer-Timo Bremer 1 ,

Bremer, Peer-Timo

2010-01-01T23:59:59.000Z

433

An Explicit Runge-Kutta Iteration for Diffusion in the Low Mach Number Combustion Code  

E-Print Network (OSTI)

usion in the Low Mach Number Combustion Code Joseph F. Grcarthe low Mach number combustion code. Contents 1 Introductionthe low Mach number combustion code, LMC. The multicomponent

Grcar, Joseph F.

2007-01-01T23:59:59.000Z

434

Application of Genetic Algorithms and Thermogravimetry to Determine the Kinetics of Polyurethane Foam in Smoldering Combustion  

E-Print Network (OSTI)

dimensional smoldering combustion. Figure 10. Results forModeling of Smoldering Combustion Propagation, Progressin Energy and Combustion Science 11, pp. 277-310. 2. T.J.

Rein, Guillermo; Lautenberger, Chris; Fernandez-Pello, Carlos; Torero, Jose; Urban, David

2006-01-01T23:59:59.000Z

435

Emissions of trace gases and aerosols during the open combustion of biomass in the laboratory  

E-Print Network (OSTI)

emissions during biomass combustion: Controlling factors andopen burning of biomass in a combustion wind-tunnel, Globalfrom smoldering combustion of biomass measured by open-path

McMeeking, Gavin R.

2009-01-01T23:59:59.000Z

436

Emissions of trace gases and aerosols during the open combustion of biomass in the laboratory  

E-Print Network (OSTI)

from residential wood combustion: Emissions characterizationfrom fireplace combustion of woods grown in the northeasternfrom the fireplace combustion of woods grown in the southern

McMeeking, Gavin R.

2009-01-01T23:59:59.000Z

437

Photodissociation dynamics and spectroscopy of free radical combustion intermediates  

Science Conference Proceedings (OSTI)

The photodissociation spectroscopy and dynamics of free radicals is studied by the technique of fast beam photofragment translational spectroscopy. Photodetachment of internally cold, mass-selected negative ions produces a clean source of radicals, which are subsequently dissociated and detected. The photofragment yield as a function of photon energy is obtained, mapping out the dissociative and predissociative electronic states of the radical. In addition, the photodissociation dynamics, product branching ratios, and bond energies are probed at fixed photon energies by measuring the translational energy, P(E{sub T}), and angular distribution of the recoiling fragments using a time- and position-sensitive detector. Ab initio calculations are combined with dynamical and statistical models to interpret the observed data. The photodissociation of three prototypical hydrocarbon combustion intermediates forms the core of this work.

Osborn, D.L.

1996-12-01T23:59:59.000Z

438

Leaching hierarchies in co-combustion residues  

Science Conference Proceedings (OSTI)

The leaching propensities from co-combustion residues of 10 trace elements (Be, V, Cr, Zn, As, Se, Cd, Ba, Hg, Pb) were evaluated. Eight fuels varying from coal blends to coal and secondary fuel mixtures to ternary mixtures were co-combusted in two reactor configurations and at two temperatures (850 and 950{sup o}C). The ash was subjected to a miniaturized toxicity characteristic leaching procedure (TCLP) developed for this study, and the trace element content in the leachate was analyzed, andpercentage retentions of elements in the ashes and leachates were calculated. Hg and Se were almost completely volatilized during combustion and, therefore, were largely absent from the ashes, in all cases. For the other trace elements, it was not possible to establish a hierarchy of relative trace-element retention. Retention was primarily a function of the combustion method, with no clear effect of temperature retention being observed. The measured trace-element retentions were compared to those predicted by thermodynamic equilibrium modeling, using the MTDATA software. The model successfully predicted the measured values in many cases; however, many anomalies were also noted. From trace-element analysis in the leachates, an extent-of-leaching hierarchy could be established. The elements that underwent low degrees of leaching were Zn, Hg, Pb, low to moderate leaching were Be, Cr, and Cd, and thoseleached to a greater extent were V, As, Se, and Ba. This hierarchy was observed for all fuels and conditions studied. Leaching was found to be a strong function of the combustion temperature and combustion method. When assessing the potential toxicity of leachate from co-combustion residues, Zn, Hg, and Pb may be deemed of least concern, while a greater emphasis should be placed in mitigating the release of the remaining elements. 18 refs., 7 tabs.

A. George; D.R. Dugwell; R. Kandiyoti [Imperial College London, London (United Kingdom). Department of Chemical Engineering and Chemical Technology

2008-05-15T23:59:59.000Z

439

SYMPOSIUM ON TURBULENCE AND COMBUSTION - SPECIAL SYMPOSIUM TO BRING TOGETHER TOP RESEARCHERS IN THE FIELDS OF FLUID TURBULENCE AND COMBUSTION TO PROMOTE ADVANCES IN TURBULENT, REACTING FLOWS  

SciTech Connect

A Symposium on Turbulence and Combustion was held at Cornell University on August 3-4, 2009. The overall goal of the Symposium was to promote future advances in the study of turbulence and combustion, through an unique forum intended to foster interactions between leading members of these two research communities. The Symposium program consisted of twelve invited lectures given by world-class experts in these fields, two poster sessions consisting of nearly 50 presentations, an open forum, and other informal activities designed to foster discussion. Topics covered in the lectures included turbulent dispersion, wall-bounded flows, mixing, finite-rate chemistry, and others, using experiment, modeling, and computations, and included perspectives from an international community of leading researchers from academia, national laboratories, and industry.

Caughey, David

2010-10-08T23:59:59.000Z

440

Combustion Process in a Spark Ignition Engine: Dynamics and Noise Level Estimation  

E-Print Network (OSTI)

We analyse the experimental time series of internal pressure in a four cylinder spark ignition engine. In our experiment, performed for different spark advance angles, apart from usual cyclic changes of engine pressure we observed oscillations. These oscillations are with longer time scales ranging from one to several hundred engine cycles depending on engine working conditions. Basing on the pressure time dependence we have calculated the heat released per cycle. Using the time series of heat release to calculate the correlation coarse-grained entropy we estimated the noise level for internal combustion process. Our results show that for a smaller spark advance angle the system is more deterministic.

T. Kaminski; M. Wendeker; K. Urbanowicz; G. Litak

2003-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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

Welding and Repair Technology for Power Plants: Fourth RRAC International Conference  

Science Conference Proceedings (OSTI)

The Fourth International Conference on Welding and Repair Technology for Power Plants included presentations of case histories and emerging welding technologies and demonstrations of repair techniques and approaches. These proceedings provide technical information discussed during this conference regarding the repair of steam turbine rotors, discs, blades, piping, steam generators, headers, reactor pressure vessel internals, valves, pumps, combustion turbines, and other components. Sessions included nucl...

2000-09-30T23:59:59.000Z

442

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

443

Hydrocarbon Fouling of SCR during PCCI combustion  

SciTech Connect

The combination of advanced combustion with advanced selective catalytic reduction (SCR) catalyst formulations was studied in the work presented here to determine the impact of the unique hydrocarbon (HC) emissions from premixed charge compression ignition (PCCI) combustion on SCR performance. Catalyst core samples cut from full size commercial Fe- and Cu-zeolite SCR catalysts were exposed to a slipstream of raw engine exhaust from a 1.9-liter 4-cylinder diesel engine operating in conventional and PCCI combustion modes. The zeolites which form the basis of these catalysts are different with the Cu-based catalyst made on a chabazite zeolite which las smaller pore structures relative to the Fe-based catalyst. Subsequent to exposure, bench flow reactor characterization of performance and hydrocarbon release and oxidation enabled evaluation of overall impacts from the engine exhaust. The Fe-zeolite NOX conversion efficiency was significantly degraded, especially at low temperatures (<250 C), after the catalyst was exposed to the raw engine exhaust. The degradation of the Fe-zeolite performance was similar for both combustion modes. The Cu-zeolite showed better tolerance to HC fouling at low temperatures compared to the Fe-zeolite but PCCI exhaust had a more significant impact than the exhaust from conventional combustion on the NOX conversion efficiency. Furthermore, chemical analysis of the hydrocarbons trapped on the SCR cores was conducted to better determine chemistry specific effects.

Prikhodko, Vitaly Y [ORNL; Pihl, Josh A [ORNL; Lewis Sr, Samuel Arthur [ORNL; Parks, II, James E [ORNL

2012-01-01T23:59:59.000Z

444

Descargue Datos de Ahorro de Combustible  

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

Descargue Datos de Ahorro de Combustible Descargue Datos de Ahorro de Combustible Los datos de ahorro de combustible son el resultado de las pruebas realizadas en el Laboratorio de Emisiones de Combustible y VehĂ­culos de la Agencia Nacional de ProtecciĂłn del Medio Ambiente en Ann Arbor, Michigan y por fabricantes de automĂłviles, con la supervisiĂłn de la EPA. Archivo Descargable de Ahorro de Combustible Archivo* de la GuĂ­a de Ahorremos Gasolina Archivo 2014 No Disponible Archivo 2013 de la GuĂ­a de Ahorremos Gasolina 2013 ĂŤcono de Adobe Acrobat Archivo 2012 de la GuĂ­a de Ahorremos Gasolina 2012 ĂŤcono de Adobe Acrobat Archivo 2011 de la GuĂ­a de Ahorremos Gasolina 2011 ĂŤcono de Adobe Acrobat Archivo 2010 de la GuĂ­a de Ahorremos Gasolina 2010 ĂŤcono de Adobe Acrobat Archivo 2009 de la GuĂ­a de Ahorremos Gasolina 2009 ĂŤcono de Adobe Acrobat

445

Design factors for stable lean premix combustion  

DOE Green Energy (OSTI)

The Advanced Turbine Systems (ATS) program includes the development of low-emission combustors. Low emissions have already been achieved by premixing fuel and air to avoid the hot gas pockets produced by nozzles without premixing. While the advantages of premixed combustion have been widely recognized, turbine developers using premixed nozzles have experienced repeated problems with combustion oscillations. Left uncontrolled, these oscillations can lead to pressure fluctuations capable of damaging engine hardware. Elimination of such oscillations is often difficult and time consuming - particularly when oscillations are discovered in the last stages of engine development. To address this issue, METC is studying oscillating combustion from lean premixing fuel nozzles. These tests are providing generic information on the mechanisms that contribute to oscillating behavior in gas turbines. METC is also investigating the use of so-called {open_quotes}active{close_quotes} control of combustion oscillations. This technique periodically injects fuel pulses into the combustor to disrupt the oscillating behavior. Recent results on active combustion control are presented in Gemmen et al. (1995) and Richards et al. (1995). This paper describes the status of METC efforts to avoid oscillations through simple design changes.

Richards, G.; Yip, M.; Gemmen, R.

1995-12-31T23:59:59.000Z

446

INTERNATIONAL AGREEMENTS  

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

INTERNATIONAL INTERNATIONAL AGREEMENTS Signed by Secretary Spencer Abraham January 2001-December 2004 TABLE OF CONTENTS Joint Statement of ntent between the Department of Energy of the United States ofAmerica and The Ministry of Energy and Mines of the Republic ofPeru on Cooperation in the Field of Energy -Tab 1 Fifth Hemispheric Energy Ministers Meeting Mexico City, Mexico - March 9, 2001. Mexico Declaration - Energy: A Crucial Factor for Integration and Sustainable Development in the Hemisphere - Tab 2 Extension of the Agreement for Energy Cooperation between the Department of Energy of the United States ofAmerica and the Secretariat ofEnergy of the United Mexican States, and its Four Annexes - Tab3 Implementing Agreement between the Department ofEnergy of the United States ofAmerica and the

447

International Energy Statistics  

U.S. Energy Information Administration (EIA)

> Countries > International Energy Statistics: International Energy Statistics; Petroleum. Production| Annual Monthly/Quarterly

448

Improved high speed maglev design  

DOE Patents (OSTI)

This report discusses a propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the be vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields.

Rote, D.M.; He, Jianliang; Coffey, H.T.

1992-01-01T23:59:59.000Z

449

Hybrid SI-HCCI combustion modes and the potential for control  

Science Conference Proceedings (OSTI)

An improvement in the fuel efficiency of gasoline engines is necessary to realize a significant reduction in U.S. energy usage. Homogeneous charge compression ignition (HCCI) in internal combustion engines is of considerable interest because of the potential reductions in flame temperature and nitrogen oxide emissions as well as potential fuel economy improvements resulting from un-throttled operation, faster heat release, and reduced heat transfer losses. Unfortunately for many transportation applications, HCCI may not be possible or practical under the full range of speed and load conditions. Thus, the most important technical developments needed to achieve wide-spread HCCI utilization are expanding the operational range and the ability to switch between HCCI and traditional propagating flame (e.g., spark ignition) combustion as power and speed change. Several recent publications and presentations have begun to address the control issues but have not focused on the fundamental nature of the transition dynamics associated with switching from SI to HCCI combustion. The development of both combustion-mode switching and stabilization technologies requires that the fundamental nature of the transition be well understood, especially in the context of realistic engine conditions.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL; Daw, C Stuart [ORNL; Green Jr, Johney Boyd [ORNL

2007-01-01T23:59:59.000Z

450

Combustion characterization of beneficiated coal-based fuels. Quarterly report No. 9, April--June 1991  

Science Conference Proceedings (OSTI)

The Pittsburgh Energy Technology Center of the US Department of Energy has contracted with Combustion Engineering, Inc. (CE) to perform a five-year project on ``Combustion Characterization of Beneficiated Coal-Based Fuels.`` The beneficiated coals are produced by other contractors under the DOE Coal Preparation Program. Several contractor-developed advanced coal cleaning processes are run at pilot-scale cleaning facilities to produce 20-ton batches of fuels for shipment to CE`s laboratory in Windsor, Connecticut. CE then processes the products into either a coal-water fuel (CWF) or a dry microfine pulverized coa1 (DMPC) form for combustion testing. The objectives of this project include: (1) the development of an engineering data base which will provide detailed information on the properties of BCFs influencing combustion, ash deposition, ash erosion, particulate collection, and emissions; and (2) the application of this technical data base to predict the performance and economic impacts of firing the BCFs in various commercial boiler designs. During the second quarter of 1991, the following technical progress was made: completed drop tube furnace devolatilization tests of the spherical oil agglomeration beneficiated products; continued analyses of samples to determine devolatilization kinetics; continued analyses of the data and samples from the CE pilot-scale tests of nine fuels; completed writing a summary topical report including all results to date on he nine fuels tested; and presented three technical papers on the project results at the 16th International Conference on Coal & Slurry Technologies.

Chow, O.K.; Nsakala, N.Y.

1991-08-01T23:59:59.000Z

451

Premixed Combustion of Hydrogen Augmented Natural Gas  

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

Premixed Combustion of Hydrogen Premixed Combustion of Hydrogen Augmented Natural Gas * Lean premixed combustion * Effective for emission reduction with natural gas * High hydrogen flame speed requires care in premixer design for SGH fuels * UC Irvine study quantifies effectiveness of hydrogen augmentation strategy * Lean stability limit improves linearly with hydrogen augmentation * Emissions reduction can be achieved * Two OEM's and the California Energy Commission have used the results to help guide them on adapting to hydrogen fuel UC Irvine Scott Samuelsen / Vince McDonell Project 98-01-SR062 1200 1300 1400 1500 1600 1700 1800 1900 0 10 20 30 40 50 60 Hydrogen Volume in Main Fuel (%) Adiabatic Flame Temperature (K) P0(3/4) High Stability High Stability Low emission Low emission operational zone operational zone

452

Fuel Interchangeability Considerations for Gas Turbine Combustion  

DOE Green Energy (OSTI)

In recent years domestic natural gas has experienced a considerable growth in demand particularly in the power generation industry. However, the desire for energy security, lower fuel costs and a reduction in carbon emissions has produced an increase in demand for alternative fuel sources. Current strategies for reducing the environmental impact of natural gas combustion in gas turbine engines used for power generation experience such hurdles as flashback, lean blow-off and combustion dynamics. These issues will continue as turbines are presented with coal syngas, gasified coal, biomass, LNG and high hydrogen content fuels. As it may be impractical to physically test a given turbine on all of the possible fuel blends it may experience over its life cycle, the need to predict fuel interchangeability becomes imperative. This study considers a number of historical parameters typically used to determine fuel interchangeability. Also addressed is the need for improved reaction mechanisms capable of accurately modeling the combustion of natural gas alternatives.

Ferguson, D.H.

2007-10-01T23:59:59.000Z

453

Spectroscopy, Kinetics, and Dynamics of Combustion Radicals  

SciTech Connect

Spectroscopy, kinetics and dynamics of jet cooled hydrocarbon transients relevant to the DOE combustion mission have been explored, exploiting i) high resolution IR lasers, ii) slit discharge sources for formation of jet cooled radicals, and iii) high sensitivity detection with direct laser absorption methods and near the quantum shot noise limit. What makes this combination powerful is that such transients can be made under high concentrations and pressures characteristic of actual combustion conditions, and yet with the resulting species rapidly cooled (T ?10-15K) in the slit supersonic expansion. Combined with the power of IR laser absorption methods, this provides novel access to spectral detection and study of many critical combustion species.

Nesbitt, David J. [Research/Professor

2013-08-06T23:59:59.000Z

454

Combustion Engineering IGCC Repowering Project  

SciTech Connect

C-E gasification process uses an entrained-flow, two-stage, slagging bottom gasifier. Figure 1 shows a schematic of the gasifier concept. Some of the coal and all of the char is fed to the combustor section, while the remaining coal is fed to the reducter section of the gasifier. The coal and char in the combustor is mixed with air and the fuel-rich mixture is burned creating the high temperature necessary to gasify the coal and melt the mineral matter in the coal. The slag flows through a slag tap at the bottom of the combustor into a water-filled slag tank where it is quenched and transformed into an inert, glassy, granular material. This vitrified slag is non-leaching, making it easy to dispose of in an environmentally acceptable manner. The hot gas leaving the combustor enters the second stage called the reductor. In the reducter, the char gasification occurs along the length of the reductor zone until the temperature falls to a point where the gasification kinetics become too slow. Once the gas temperature reaches this level, essentially no further gasification takes place and the gases subsequently are cooled with convective surface to a temperature low enough to enter the cleanup system. Nearly all of the liberated energy from the coal that does not produce fuel gas is collected and recovered with steam generating surface either in the walls of the vessel or by conventional boiler convective surfaces in the backpass of the gasifier. A mixture of unburned carbon and ash (called char) is carried out of the gasifier with the product gas strewn. The char is collected and recycled back to the gasifier where it is consumed. Thus, there is no net production of char which results in negligible carbon loss. The product gas enters a desulfurization system where it is cleaned of sulfur compounds present in the fuel gas. The clean fuel gas is now available for use in the gas turbine combuster for an integrated coal gasification combined cycle (IGCC) application.

Andrus, H.E.; Thibeault, P.R.; Gibson, C.R.

1992-11-01T23:59:59.000Z

455

Combustion Engineering IGCC Repowering Project  

SciTech Connect

C-E gasification process uses an entrained-flow, two-stage, slagging bottom gasifier. Figure 1 shows a schematic of the gasifier concept. Some of the coal and all of the char is fed to the combustor section, while the remaining coal is fed to the reducter section of the gasifier. The coal and char in the combustor is mixed with air and the fuel-rich mixture is burned creating the high temperature necessary to gasify the coal and melt the mineral matter in the coal. The slag flows through a slag tap at the bottom of the combustor into a water-filled slag tank where it is quenched and transformed into an inert, glassy, granular material. This vitrified slag is non-leaching, making it easy to dispose of in an environmentally acceptable manner. The hot gas leaving the combustor enters the second stage called the reductor. In the reducter, the char gasification occurs along the length of the reductor zone until the temperature falls to a point where the gasification kinetics become too slow. Once the gas temperature reaches this level, essentially no further gasification takes place and the gases subsequently are cooled with convective surface to a temperature low enough to enter the cleanup system. Nearly all of the liberated energy from the coal that does not produce fuel gas is collected and recovered with steam generating surface either in the walls of the vessel or by conventional boiler convective surfaces in the backpass of the gasifier. A mixture of unburned carbon and ash (called char) is carried out of the gasifier with the product gas strewn. The char is collected and recycled back to the gasifier where it is consumed. Thus, there is no net production of char which results in negligible carbon loss. The product gas enters a desulfurization system where it is cleaned of sulfur compounds present in the fuel gas. The clean fuel gas is now available for use in the gas turbine combuster for an integrated coal gasification combined cycle (IGCC) application.

Andrus, H.E.; Thibeault, P.R.; Gibson, C.R.

1992-01-01T23:59:59.000Z

456

Proceedings: EPRI/EPA 1995 Joint Symposium on Stationary Combustion NOx Control: Volume 1: Tuesday, May 16, 1995, Sessions 1, 2, 3; Volume 2: Wednesday, May 17, 1995, Sessions 4 and 5; Volume 3: Thursday, May 18, 1995, Sessions 6A, 6B, 7A, 7B; Volume ...  

Science Conference Proceedings (OSTI)

The 1995 Joint Symposium Combustion NOx Controls was held in Kansas City, Missouri, May 16-19, 1995. Jointly sponsored by EPRI and EPA, the symposium was the eighth in a biennial series devoted to the international exchange of information on recent technological and regulatory developments for stationary combustion NOx control. Topics covered included active full-scale retrofit demonstrations of low-NOx combustion systems in the United States and abroad; performance and economics results from pilot- and ...

2000-01-05T23:59:59.000Z

457

Combustion modeling in advanced gas turbine systems  

DOE Green Energy (OSTI)

Goal of DOE`s Advanced Turbine Systems program is to develop and commercialize ultra-high efficiency, environmentally superior, cost competitive gas turbine systems for base-load applications in utility, independent power producer, and industrial markets. Primary objective of the program here is to develop a comprehensive combustion model for advanced gas turbine combustion systems using natural gas (coal gasification or biomass fuels). The efforts included code evaluation (PCGC-3), coherent anti-Stokes Raman spectroscopy, laser Doppler anemometry, and laser-induced fluorescence.

Smoot, L.D.; Hedman, P.O.; Fletcher, T.H.; Brewster, B.S.; Kramer, S.K. [Brigham Young Univ., Provo, UT (United States). Advanced Combustion Engineering Research Center

1995-12-31T23:59:59.000Z

458

Argonne TTRDC - Engines - Home - combustion, compression ignition,  

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

* Combustion Visualization * Combustion Visualization * Compression-Ignition * Emissions Control * Fuel Injection and Sprays * Idling * Multi-Dimensional Modeling * Particulate Matter * Spark Ignition Green Racing GREET Hybrid Electric Vehicles Hydrogen & Fuel Cells Materials Modeling, Simulation & Software Plug-In Hybrid Electric Vehicles PSAT Smart Grid Student Competitions Technology Analysis Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Engines Omnivorous engine tested by Thomas Wallner Thomas Wallner tests the omnivorous engine, a type of spark-ignition engine. Argonne's engine research is contributing to advances in technology that will impact the use of conventional and alternative fuels and the design of advanced technology vehicles. Compression Ignition

459

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

460

Combustion Analysis of Different Olive Residues  

E-Print Network (OSTI)

Abstract: The Thermogravimetric Analysis (TGA) techniques and concretely the study of the burning profile provide information that can be used to estimate the behaviour of the combustion of carbonous materials. Commonly, these techniques have been used for the study of carbons, but are also interesting for the analysis of biomass wastes, due to the different species present on the wastes affect directly to its thermal properties. In this work, techniques of thermal analysis have been applied to compare the behaviour of different wastes coming from olive oil mills. From these results, it is remarkable that the Concentrated Olive Mill Waste Water (COMWW) presents more unfavourable conditions for its combustion.

Teresa Mir; Alberto Esteban; Sebastián Rojas; Irene Montero; Antonio Ruiz

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "internal combustion maglev" 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.


461

A laboratory scale supersonic combustive flow system  

DOE Green Energy (OSTI)

A laboratory scale supersonic flow system [Combustive Flow System (CFS)] which utilizes the gaseous products of methane-air and/or liquid fuel-air combustion has been assembled to provide a propulsion type exhaust flow field for various applications. Such applications include providing a testbed for the study of planar two-dimensional nozzle flow fields with chemistry, three-dimensional flow field mixing near the exit of rectangular nozzles, benchmarking the predictive capability of various computational fluid dynamic codes, and the development and testing of advanced diagnostic techniques. This paper will provide a detailed description of the flow system and data related to its operation.

Sams, E.C.; Zerkle, D.K.; Fry, H.A.; Wantuck, P.J.

1995-02-01T23:59:59.000Z

462

TransForum v9n2 - Low Temperature Combustion  

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

Low-Temperature Combustion Knocks Out NOx, Saves Fuel and Money One of the hottest concepts in clean diesel technology is low-temperature combustion (LTC). Engineers from Argonne's...

463

GAS TURBINE REHEAT USING IN-SITU COMBUSTION  

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

GAS TURBINE REHEAT USING IN-SITU COMBUSTION Topical Report: Task 2 - Combustion and Emissions Cooperative Agreement No. DE-FC26-00NT40913 April 30, 2004 by D.M. Bachovchin T.E....

464

2010 Advanced Combustion Engine R&D Report  

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

and Development Approved by Gurpreet Singh Team Leader, Advanced Combustion Engine R&D Vehicle Technologies Program FY 2010 Progress rePort For AdvAnced combustion engine...

465

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process  

This patent-pending technology, “Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process,” provides a metal-oxide oxygen carrier for application in fuel combustion processes that use oxygen.

466

Combustion: Sandwiched Between Engines and Fuel (Trying to Make...  

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

Combustion: Sandwiched Between Engines and Fuel (Trying to Make Bread from Combustion) Speaker(s): Robert Dibble Date: March 10, 2010 - 12:00pm Location: 90-3122 This seminar will...

467

COMBUSTION OF COAL IN AN OPPOSED FLOW DIFFUSION BURNER  

E-Print Network (OSTI)

and N.M. Laurendeau, "Gasification of Pulverized Coal Withininformation on the gasification and combustion of coal with

Chin, W.K.

2010-01-01T23:59:59.000Z

468

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2006-05-09T23:59:59.000Z

469

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2011-11-01T23:59:59.000Z

470

Application of Regenerative Combustion Technology on Reheating Furnace in PISCO  

Science Conference Proceedings (OSTI)

The key features of the regenerative combustion technology were introduced and its application in the reheating furnace of Rail & Beam plant of PISCOŁ¨Panzhihua Iron & Steel Co.Ł©was discussedŁ®Comparedwith the traditional combustion technologyŁ¬the ... Keywords: Regenerative Style, Combustion Technology, Reheating Furnace, Energy Conservation

Chen Yong; Pan Hong; Xue Nianfu

2011-02-01T23:59:59.000Z

471

On the existence of high Lewis number combustion fronts  

Science Conference Proceedings (OSTI)

We study a mathematical model for high Lewis number combustion processes with the reaction rate of the form of an Arrhenius law with or without an ignition cut-off. An efficient method for the proof of the existence and uniqueness of combustion fronts ... Keywords: Combustion fronts, Geometric singular perturbation theory, Ignition cut-off

Anna Ghazaryan; Christopher Jones

2012-02-01T23:59:59.000Z

472

IFRF Combustion Journal Article Number 200303, July 2003  

E-Print Network (OSTI)

IFRF Combustion Journal Article Number 200303, July 2003 ISSN 1562-479X Waste Incineration European-mail: klaus.goerner@uni-essen.den URL: http://www.luat.uni-essen.de #12;IFRF Combustion Journal - 2 - Goerner the lower calorific value of normal municipal waste increased with the consequence of increasing combustion

Columbia University

473

POINTWISE GREEN FUNCTION BOUNDS AND STABILITY OF COMBUSTION WAVES  

E-Print Network (OSTI)

POINTWISE GREEN FUNCTION BOUNDS AND STABILITY OF COMBUSTION WAVES GREGORY LYNG, MOHAMMADREZA ROOFI for traveling wave solutions of an abstract viscous combustion model including both Majda's model and the full-wave) approximation. Notably, our results apply to combustion waves of any type: weak or strong, detonations or defla

Texier, Benjamin - Institut de Mathématiques de Jussieu, Université Paris 7

474

FLUCTUATIONS OF THE FRONT IN A STOCHASTIC COMBUSTION MODEL  

E-Print Network (OSTI)

FLUCTUATIONS OF THE FRONT IN A STOCHASTIC COMBUSTION MODEL #1; (FLUCTUATIONS DU FRONT DANS UN MODĂ?LE DE COMBUSTION) FRANCIS COMETS 1 , JEREMY QUASTEL 2 AND ALEJANDRO F. RAMĂŤREZ 3 Abstract. We consider an interacting particle system on the one dimensional lattice Z modeling combustion. The process

Quastel, Jeremy

475

Combustion synthesis and quasi-isostatic densication of powder cermets  

E-Print Network (OSTI)

Combustion synthesis and quasi-isostatic densi®cation of powder cermets E.A. Olevskya,* , E-propagating High-temperature synthesis (also known as SHS or combustion synthesis) presents a bright potential equation parameters. The distortion undergone by the combustion synthesis products during QIP densi

Meyers, Marc A.

476

Modeling of combustion noise spectrum from turbulent premixed flames  

E-Print Network (OSTI)

Modeling of combustion noise spectrum from turbulent premixed flames Y. Liu, A. P. Dowling, T. D, Nantes, France 2321 #12;Turbulent combustion processes generate sound radiation due to temporal changes, this temporal correlation and its role in the modeling of combustion noise spectrum are studied by analyzing

Paris-Sud XI, Université de

477

A filtered tabulated chemistry model for LES of premixed combustion  

E-Print Network (OSTI)

A filtered tabulated chemistry model for LES of premixed combustion B. Fiorinaa , R. Vicquelina to turbulent combustion regimes by including subgrid scale wrinkling effects in the flame front propagation Simulation, Turbulent premixed combustion, Tabulated chemistry 1. Introduction Flame ignition and extinction

Paris-Sud XI, Université de

478

On the ChapmanJouguet Limit for a Combustion Model  

E-Print Network (OSTI)

On the Chapman­Jouguet Limit for a Combustion Model Bernard Hanouzet \\Lambda , Roberto Natalini y and Alberto Tesei z Abstract We study the limiting behaviour of solutions to a simple model for combustion detonations and deflagrations with respect to the reaction rate. Key words and phrases: combustion

479

Towards cleaner combustion engines through groundbreaking detailed chemical kinetic models  

E-Print Network (OSTI)

Towards cleaner combustion engines through groundbreaking detailed chemical kinetic models of more predictive and more accurate detailed chemical kinetic models for the combustion of fuels that the combustion of liquid fuels will remain the main source of energy for transportation for the next 50 years.1

480

Post-Combustion CO2 Capture 11 -13 July 2010  

E-Print Network (OSTI)

Post-Combustion CO2 Capture Workshop 11 - 13 July 2010 Tufts European Center Talloires, France Institute | | Clean Air Task Force | | Asia Clean Energy Innovation Initiative | #12;Post-Combustion CO2 Capture Workshop 11 - 13 July 2010 Talloires, France PROCEEDINGS: Post-Combustion CO2 Capture Workshop

Note: This page contains sample records for the topic "internal combustion maglev" 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.


481

An Unstable Elliptic Free Boundary Problem arising in Solid Combustion  

E-Print Network (OSTI)

An Unstable Elliptic Free Boundary Problem arising in Solid Combustion R. Monneau Ecole Nationale in solid combustion. The maximal solution and every local minimizer of the energy are regular, that is, {u combustion, singularity, unstable problem, Aleksandrov reflection, unique blow-up limit, second variation

Monneau, RĂ©gis

482

Combustion fronts in porous media with two layers Steve Schecter  

E-Print Network (OSTI)

Combustion fronts in porous media with two layers layer 1 layer 2 Steve Schecter North Carolina Subject: Propagation of a combustion front through a porous medium with two parallel layers having different properties. · Each layer admits a traveling combustion wave. · The layers are coupled by heat

Schecter, Stephen

483

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

484

Combustion Turbine Experience and Intelligence Reports: 2009  

Science Conference Proceedings (OSTI)

Along with up-to-date information on trends in gas markets in the United States and around the world, the 2009 edition of the Combustion Turbine Experience and Intelligence Report (CTEIR) addresses developments in natural gas supply fundamentals, extending plant depreciable life, and CO2 capture for combined cycles.

2009-12-04T23:59:59.000Z

485

Kompetenscentrum Frbrnningsprocesser Centre of Competence Combustion Processes  

E-Print Network (OSTI)

engine fuel effi- ciency is limited by emission Aftertreatment due to emis- sions legislation. However 2011 Faculty of Engineering, LTH Lund University #12;KCFP Kompetenscentrum Förbränningsprocesser Centre of Competence Combustion Processes Faculty of Engineering, LTH P.O. Box 118 SE-221 00 Lund Sweden #12;KCFP

486

Dust Mitigation Methods for Coal Combustion Products  

Science Conference Proceedings (OSTI)

Coal-fired power plants generate coal combustion products (CCPs) requiring management for storage and disposal. These products are often stored in facilities such as landfills or placed in temporary storage pads for short or long durations. At these facilities, there is a need to address dust mitigation concerns in order to comply with environmental permits, ...

2013-08-27T23:59:59.000Z

487

Combustion Turbine Experience and Intelligence Report: 2011  

Science Conference Proceedings (OSTI)

Along with up-to-date information on trends in gas markets in the United States and around the world, the 2011 edition of the Combustion Turbine Experience and Intelligence Report (CTEIR) addresses the impact of shales on natural gas markets and associated risks and includes an overview of boiler windbox repowering using gas turbines.

2011-12-07T23:59:59.000Z

488

Biomass pyrolysis oil properties and combustion meeting  

DOE Green Energy (OSTI)

These proceedings contain extended abstracts from the Biomass Pyrolysis Oil Properties and Combustion Meeting held September 26-28, 1994. This meeting is cosponsored by the DOE, NREL, NRCan, and VTT Energy (Finland) for the discussion of developments in the application of biomass-derived pyrolysis oil.

NONE

1995-03-01T23:59:59.000Z

489

Oscillatory combustion in closed vessels under microgravity  

Science Conference Proceedings (OSTI)

The existence and spatial development of gas-phase, thermokinetic oscillations in a spherical reactor under the influence of mass and thermal diffusion have been investigated by numerical methods. The conditions correspond to those that would be experienced ... Keywords: Microgravity, Oscillatory combustion, Sal'nikov model, Thermal diffusion

R. Fairlie; J. F. Griffiths

2002-08-01T23:59:59.000Z

490

A model for premixed combustion oscillations  

DOE Green Energy (OSTI)

Combustion oscillations are receiving renewed research interest due to increasing application of lean premix (LPM) combustion to gas turbines. A simple, nonlinear model for premixed combustion is described; it was developed to explain experimental results and to provide guidance for developing active control schemes based on nonlinear concepts. The model can be used to quickly examine instability trends associated with changes in equivalence ratio, mass flow rate, geometry, ambient conditions, etc. The model represents the relevant processes occurring in a fuel nozzle and combustor analogous to current LPM turbine combustors. Conservation equations for the nozzle and combustor are developed from simple control volume analysis, providing ordinary differential equations that can be solved on a PC. Combustion is modeled as a stirred reactor, with bimolecular reaction between fuel and air. Although focus is on the model, it and experimental results are compared to understand effects of inlet air temperature and open loop control schemes. The model shows that both are related to changes in transport time.

Janus, M.C.; Richards, G.A.

1996-03-01T23:59:59.000Z

491

Chemical Constituents in Coal Combustion Products: Molybdenum  

Science Conference Proceedings (OSTI)

This report provides comprehensive information on the environmental occurrence and behavior of molybdenum (Mo), with specific emphasis on Mo derived from coal combustion products (CCPs). Included are discussions of Mo's occurrence in water and soil, potential human health and ecological effects, geochemistry, occurrence in CCPs, leaching characteristics from CCPs, measurement techniques, and treatment/remediation options.

2011-11-04T23:59:59.000Z

492

Simulation of lean premixed turbulent combustion  

DOE Green Energy (OSTI)

There is considerable technological interest in developingnew fuel-flexible combustion systems that can burn fuels such ashydrogenor syngas. Lean premixed systems have the potential to burn thesetypes of fuels with high efficiency and low NOx emissions due to reducedburnt gas temperatures. Although traditional scientific approaches basedon theory and laboratory experiment have played essential roles indeveloping our current understanding of premixed combustion, they areunable to meet the challenges of designing fuel-flexible lean premixedcombustion devices. Computation, with itsability to deal with complexityand its unlimited access to data, hasthe potential for addressing thesechallenges. Realizing this potential requires the ability to perform highfidelity simulations of turbulent lean premixed flames under realisticconditions. In this paper, we examine the specialized mathematicalstructure of these combustion problems and discuss simulation approachesthat exploit this structure. Using these ideas we can dramatically reducecomputational cost, making it possible to perform high-fidelitysimulations of realistic flames. We illustrate this methodology byconsidering ultra-lean hydrogen flames and discuss how this type ofsimulation is changing the way researchers study combustion.

Bell, John B.; Day, Marcus S.; Almgren, Ann S.; Lijewski, MichaelJ.; Rendleman, Charles A.; Cheng, Robert K.; Shepherd, Ian G.

2006-06-25T23:59:59.000Z