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Note: This page contains sample records for the topic "biomass heating system" from the National Library of EnergyBeta (NLEBeta).
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1

EA-1922: Combined Power and Biomass Heating System, Fort Yukon, Alaska |  

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

2: Combined Power and Biomass Heating System, Fort Yukon, 2: Combined Power and Biomass Heating System, Fort Yukon, Alaska EA-1922: Combined Power and Biomass Heating System, Fort Yukon, Alaska SUMMARY DOE (lead agency), Denali Commission (cooperating agency) and USDA Rural Utilities Services (cooperating agency) are proposing to provide funding to support the final design and construction of a biomass combined heat and power plant and associated district heating system to the Council of Athabascan Tribal Governments and the Gwitchyaa Zhee Corporation. The proposed biomass district heating system would be located in Fort Yukon Alaska. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD May 6, 2013 EA-1922: Finding of No Significant Impact Combined Power and Biomass Heating System, Fort Yukon, Alaska

2

EA-1922: Combined Power and Biomass Heating System, Fort Yukon, Alaska |  

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

2: Combined Power and Biomass Heating System, Fort Yukon, 2: Combined Power and Biomass Heating System, Fort Yukon, Alaska EA-1922: Combined Power and Biomass Heating System, Fort Yukon, Alaska SUMMARY DOE (lead agency), Denali Commission (cooperating agency) and USDA Rural Utilities Services (cooperating agency) are proposing to provide funding to support the final design and construction of a biomass combined heat and power plant and associated district heating system to the Council of Athabascan Tribal Governments and the Gwitchyaa Zhee Corporation. The proposed biomass district heating system would be located in Fort Yukon Alaska. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD May 6, 2013 EA-1922: Finding of No Significant Impact Combined Power and Biomass Heating System, Fort Yukon, Alaska

3

First university owned district heating system using biomass heat  

E-Print Network (OSTI)

Components 4.3 m diameter gasifier 4.4 MW flue gas boiler 60 t hog fuel storage Electrostatic precipitator Residue Gasifier Oxidizer Flue Gas Boiler Electrostatic Precipitator Heat to campus district energy loop

Northern British Columbia, University of

4

Biomass District Heat System for Interior Rural Alaska Villages  

SciTech Connect

Alaska Village Initiatives (AVI) from the outset of the project had a goal of developing an integrated village approach to biomass in Rural Alaskan villages. A successful biomass project had to be ecologically, socially/culturally and economically viable and sustainable. Although many agencies were supportive of biomass programs in villages none had the capacity to deal effectively with developing all of the tools necessary to build a complete integrated program. AVI had a sharp learning curve as well. By the end of the project with all the completed tasks, AVI developed the tools and understanding to connect all of the dots of an integrated village based program. These included initially developing a feasibility model that created the capacity to optimize a biomass system in a village. AVI intent was to develop all aspects or components of a fully integrated biomass program for a village. This meant understand the forest resource and developing a sustainable harvest system that included the “right sized” harvest equipment for the scale of the project. Developing a training program for harvesting and managing the forest for regeneration. Making sure the type, quality, and delivery system matched the needs of the type of boiler or boilers to be installed. AVI intended for each biomass program to be of the scale that would create jobs and a sustainable business.

Wall, William A.; Parker, Charles R.

2014-09-01T23:59:59.000Z

5

Biomass Energy Small-Scale Combined Heat and Power Systems  

Science Journals Connector (OSTI)

Combined heat and power (CHP) generation is one of the essential pillar in a modern, sustainable, and environmentally friendly energy generation. This is due to the fact that cogeneration systems are energeti...

Daniel Büchner; Volker Lenz

2012-01-01T23:59:59.000Z

6

Biomass Energy Small-Scale Combined Heat and Power Systems  

Science Journals Connector (OSTI)

Combined heat and power (CHP) generation is one of the essential pillar in a modern, sustainable, and environmentally friendly energy generation. This is due to the fact that cogeneration systems are energeti...

Daniel Büchner; Volker Lenz

2013-01-01T23:59:59.000Z

7

Biomass Energy Heat Provision in Modern Small-Scale Systems  

Science Journals Connector (OSTI)

The use of wood for the supply of heat in furnace systems with small to medium capacity has never really gone out of fashion, particularly in rural areas. Especially in recent years, a virtual renaissance in t...

Dr. Hans Hartmann; Dr. Volker Lenz

2013-01-01T23:59:59.000Z

8

Biomass Energy Heat Provision in Modern Small-Scale Systems  

Science Journals Connector (OSTI)

The use of wood for the supply of heat in furnace systems with small to medium capacity has never really gone out of fashion, particularly in rural areas. Especially in recent years, a virtual renaissance in t...

Dr. Hans Hartmann; Dr. Volker Lenz

2012-01-01T23:59:59.000Z

9

Biomass Energy Heat Provision in Modern Large-Scale Systems  

Science Journals Connector (OSTI)

Biomass is the most important renewable energy source in the European Union. In the field of energetic utilization of solid biomass, combustion is the most advanced and market-proven application. Consequently...

Dr. Ingwald Obernberger…

2012-01-01T23:59:59.000Z

10

Biomass Energy Heat Provision in Modern Large-Scale Systems  

Science Journals Connector (OSTI)

Biomass is the most important renewable energy source in the European Union. In the field of energetic utilization of solid biomass, combustion is the most advanced and market-proven application. Consequently...

Dr. Ingwald Obernberger; Dr. Friedrich Biedermann

2013-01-01T23:59:59.000Z

11

Organic Rankine Cycle System Preliminary Design with Corn Cob Biomass Waste Burning as Heat Source  

Science Journals Connector (OSTI)

Abstract The renewable energy source potencies in Indonesia are needed to be utilized to fulfill the electricity requirement in rural or remote area that not yet get electricity. One of the potency is biomass waste. Therefore, this paper discusses about the electricity generation preliminary design of Organic Rankine Cycle (ORC) system with corn cob biomass waste burning as heat source, so it can be obtained the theoretic corn farm area requirement, electricity power, and thermal efficiency at heat source temperature and flow rate variations. Corn cob burning temperature can heat up the heating fluid that is heated by boiler with corn cob as the biomass fuel. Furthermore, that heating fluid is used as ORC electricity generation heat source. The independent variables in this study are the heating fluid temperature which varied between 110, 120, and 130oC, and the heating fluid flow rate that varied between 100, 150, and 200 liter/minute. \\{R141b\\} is selected to be the working fluid, palm oil is used for heating fluid and water as cooling fluid. The calculation results that the theoretic electricity power, thermal efficiency, and corn farm area requirement, respectively, are in the range of 3.5-8.5 kW, 9.2-10.3%, and 49.5-101.1 hectare/year. All of the highest range values are resulted at the highest temperature and flow rate, 130oC and 200 liter/minute. This result shows that corn cob burning heat is potential to be utilized as electricity generation heat source for rural society, particularly for some areas that have been studied.

Nur Rohmah; Ghalya Pikra; Agus Salim

2013-01-01T23:59:59.000Z

12

FINAL ENVIRONMENTAL ASSESSMENT FOR A COMBINED POWER AND BIOMASS HEATING SYSTEM  

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

FOR A COMBINED POWER AND BIOMASS HEATING SYSTEM FORT YUKON, ALASKA U.S. Department of Energy Office of Energy Efficiency and Renewable Energy GOLDEN FIELD OFFICE In Cooperation with USDA RURAL UTILITIES SERVICE DENALI COMMISSION APRIL 2013 ABBREVIATIONS AND ACRONYMS ADEC Alaska Department of Environmental Conservation AFRPA Alaska Forest Resources Practices Act BFE Base Flood Elevation BMP best management practice BTU British Thermal Unit CATG Council of Athabascan Tribal Governments CEQ Council on Environmental Quality CFR Code of Federal Regulations CHP Combined Heat and Power CO carbon monoxide CO 2 carbon dioxide CWA Clean Water Act dBA A-weighted decibel DBH diameter at breast height DOE U.S. Department of Energy EA Environmental Assessment

13

Integration of biomass into urban energy systems for heat and power. Part I: An MILP based spatial optimization methodology  

Science Journals Connector (OSTI)

Abstract The paper presents a mixed integer linear programming (MILP) approach to optimize multi-biomass and natural gas supply chain strategic design for heat and power generation in urban areas. The focus is on spatial and temporal allocation of biomass supply, storage, processing, transport and energy conversion (heat and CHP) to match the heat demand of residential end users. The main aim lies on the representation of the relationships between the biomass processing and biofuel energy conversion steps, and on the trade-offs between centralized district heating plants and local heat generation systems. After a description of state of the art and research trends in urban energy systems and bioenergy modelling, an application of the methodology to a generic case study is proposed. With the assumed techno-economic parameters, biomass based thermal energy generation results competitive with natural gas, while district heating network results the main option for urban areas with high thermal energy demand density. Potential further applications of this model are also described, together with main barriers for development of bioenergy routes for urban areas.

Antonio M. Pantaleo; Sara Giarola; Ausilio Bauen; Nilay Shah

2014-01-01T23:59:59.000Z

14

Heat transfer efficiency of biomass cookstoves.  

E-Print Network (OSTI)

??Nearly half of the world’s human population burns biomass fuel to meet home energy needs for heating and cooking. Biomass combustion often releases harmful chemical… (more)

Zube, Daniel Joseph

2010-01-01T23:59:59.000Z

15

Biomass Derivatives Competitive with Heating Oil Costs.  

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

Biomass Derivatives Competitive with Heating Oil Costs Transportation fuel Heat or electricity * Data are from literature, except heating oil is adjusted from 2011 winter average *...

16

MAE Seminar Series NYSERDA Biomass Heating R&D for  

E-Print Network (OSTI)

MAE Seminar Series NYSERDA Biomass Heating R&D for Residential and Small- Scale Commercial Systems Ellen Burkhard, Ph.D. NYSERDA Program Manager Abstract In an effort to develop a high-efficiency biomass's Environmental R&D and Building R&D Programs jointly developed the Biomass Heating R&D Program. The objectives

Krovi, Venkat

17

Biomass Derivatives Competitive with Heating Oil Costs.  

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

Presentation at the May 9, 2012, Pyrolysis Oil Workship on biomass derivatives competitive with heating oil costs.

18

ITP Energy Intensive Processes: Improved Heat Recovery in Biomass...  

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

Energy Intensive Processes: Improved Heat Recovery in Biomass-Fired Boilers ITP Energy Intensive Processes: Improved Heat Recovery in Biomass-Fired Boilers biomass-firedboilers.pd...

19

Mobile Biomass Pelletizing System  

SciTech Connect

This grant project examines multiple aspects of the pelletizing process to determine the feasibility of pelletizing biomass using a mobile form factor system. These aspects are: the automatic adjustment of the die height in a rotary-style pellet mill, the construction of the die head to allow the use of ceramic materials for extreme wear, integrating a heat exchanger network into the entire process from drying to cooling, the use of superheated steam for adjusting the moisture content to optimum, the economics of using diesel power to operate the system; a break-even analysis of estimated fixed operating costs vs. tons per hour capacity. Initial development work has created a viable mechanical model. The overall analysis of this model suggests that pelletizing can be economically done using a mobile platform.

Thomas Mason

2009-04-16T23:59:59.000Z

20

Integrated Biomass Gasification - Gas Turbine - Fuel Cell Systems for Small-Scale, Distributed Generation of Electricity and Heat  

Science Journals Connector (OSTI)

A system design for application on commercial scale based on present day technology will be considered. At Delft University of Technology, a biomass gasifier has been set up...th process development unit, will be...

B. J. P. Buhre; J. Andries

2002-01-01T23:59:59.000Z

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


21

Energy Integration and Analysis of Solid Oxide Fuel Cell Based Microcombined Heat and Power Systems and Other Renewable Systems Using Biomass Waste Derived Syngas  

Science Journals Connector (OSTI)

(2, 3) The microgeneration or self-generation concept for dwellings is associated with several advantages, such as (1) cutting emissions of greenhouse gases, (2) reducing the number of people living in fuel poverty, (3) reducing the demands on transmission systems and distribution systems, (4) reducing the need for those systems to be modified, (5) enhancing the availability of electricity and heat for consumers, and (6) encouraging consumer engagement with energy efficient technologies. ... The SOFC can utilize heat of oxidization of gaseous fuels, such as hydrogen, syngas, and natural gas, in the anode in the presence of an oxidant in the cathode, to produce electricity. ... The biomass gasification plant under consideration comprises gasifiers, gas cooling and clean up technologies, gas turbines, heat recovery steam generators (HRSG), etc. ...

Jhuma Sadhukhan; Yingru Zhao; Matthew Leach; Nigel P. Brandon; Nilay Shah

2010-10-08T23:59:59.000Z

22

Integration of biomass into urban energy systems for heat and power. Part II: Sensitivity assessment of main techno-economic factors  

Science Journals Connector (OSTI)

Abstract The paper presents the application of a mixed integer linear programming (MILP) methodology to optimize multi-biomass and natural gas supply chain strategic design for heat and power generation in urban areas. The focus is on spatial and temporal allocation of biomass supply, storage, processing, transport and energy conversion (heat and CHP) to match the heat demand of residential end users. The main aim lies on the assessment of the trade-offs between centralized district heating plants and local heat generation systems, and on the decoupling of the biomass processing and biofuel energy conversion steps. After a brief description of the methodology, which is presented in detail in Part I of the research, an application to a generic urban area is proposed. Moreover, the influence of energy demand typologies (urban areas energy density, heat consumption patterns, buildings energy efficiency levels, baseline energy costs and available infrastructures) and specific constraints of urban areas (transport logistics, air emission levels, space availability) on the selection of optimal bioenergy pathways for heat and power is assessed, by means of sensitivity analysis. On the basis of these results, broad considerations about the key factors influencing the use of bioenergy into urban energy systems are proposed. Potential further applications of this model are also described, together with main barriers for development of bioenergy routes for urban areas.

Antonio M. Pantaleo; Sara Giarola; Ausilio Bauen; Nilay Shah

2014-01-01T23:59:59.000Z

23

EECBG Success Story: Biomass Boiler to Heat Oregon School | Department...  

Energy Savers (EERE)

EECBG Success Story: Biomass Boiler to Heat Oregon School EECBG Success Story: Biomass Boiler to Heat Oregon School April 26, 2011 - 3:56pm Addthis Oregon Governor Kulongoski...

24

Biomass Boiler to Heat Oregon School | Department of Energy  

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

Biomass Boiler to Heat Oregon School Biomass Boiler to Heat Oregon School Biomass Boiler to Heat Oregon School April 26, 2011 - 5:29pm Addthis Oregon Governor Kulongoski maneuvers a backhoe to break ground at the Vernonia school site. | Department of Energy Image | Photo by Joel Danforth, Contractor | Public Domain | Oregon Governor Kulongoski maneuvers a backhoe to break ground at the Vernonia school site. | Department of Energy Image | Photo by Joel Danforth, Contractor | Public Domain | Joel Danforth Project Officer, Golden Field Office What will the project do? The boiler system will have a capacity of up to 3 Million Metric British Thermal Units (MMBTU) per hour and will be fueled by locally derived wood-pellet feedstocks. A new school in Vernonia, Oregon is beginning to take form as the town

25

Biomass Boiler to Heat Oregon School | Department of Energy  

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

Biomass Boiler to Heat Oregon School Biomass Boiler to Heat Oregon School Biomass Boiler to Heat Oregon School April 26, 2011 - 5:29pm Addthis Oregon Governor Kulongoski maneuvers a backhoe to break ground at the Vernonia school site. | Department of Energy Image | Photo by Joel Danforth, Contractor | Public Domain | Oregon Governor Kulongoski maneuvers a backhoe to break ground at the Vernonia school site. | Department of Energy Image | Photo by Joel Danforth, Contractor | Public Domain | Joel Danforth Project Officer, Golden Field Office What will the project do? The boiler system will have a capacity of up to 3 Million Metric British Thermal Units (MMBTU) per hour and will be fueled by locally derived wood-pellet feedstocks. A new school in Vernonia, Oregon is beginning to take form as the town

26

Estimation of Biomass Heat Storage Using Thermal Infrared Imagery: Application to a Walnut Orchard  

E-Print Network (OSTI)

NOTE Estimation of Biomass Heat Storage Using Thermalmethod to estimate tree biomass heat storage from thermalinfrared (TIR) imaging of biomass surface temperature is

Garai, Anirban; Kleissl, Jan; Llewellyn Smith, Stefan G.

2010-01-01T23:59:59.000Z

27

ITP Energy Intensive Processes: Improved Heat Recovery in Biomass...  

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

INDUSTRIAL TECHNOLOGIES PROGRAM Improved Heat Recovery in Biomass-Fired Boilers Reducing Superheater Corrosion to Enable Maximum Energy Effi ciency This project will develop...

28

Local Option - Solar, Wind and Biomass Energy Systems Exemption |  

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

Local Option - Solar, Wind and Biomass Energy Systems Exemption Local Option - Solar, Wind and Biomass Energy Systems Exemption Local Option - Solar, Wind and Biomass Energy Systems Exemption < Back Eligibility Agricultural Commercial Industrial Residential Savings Category Bioenergy Home Weatherization Commercial Weatherization Solar Lighting Windows, Doors, & Skylights Heating & Cooling Commercial Heating & Cooling Heating Buying & Making Electricity Swimming Pool Heaters Water Heating Wind Program Info Start Date 01/01/1991 State New York Program Type Property Tax Incentive Rebate Amount 100% exemption for 15 years (unless local jurisdiction has opted out) Provider Office of Real Property Tax Services Section 487 of the New York State Real Property Tax Law provides a 15-year real property tax exemption for solar, wind energy, and farm-waste energy

29

Heating System Specification Specification of Heating System  

E-Print Network (OSTI)

Appendix A Heating System Specification /* Specification of Heating System (loosely based */ requestHeat : Room ­? bool; 306 #12; APPENDIX A. HEATING SYSTEM SPECIFICATION 307 /* user inputs */ livingPattern : Room ­? behaviour; setTemp : Room ­? num; heatSwitchOn, heatSwitchOff, userReset : simple

Day, Nancy

30

Heating System Basics | Department of Energy  

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

Heating System Basics Heating System Basics Heating System Basics August 16, 2013 - 2:32pm Addthis A variety of heating technologies are available today. You can learn more about what heating systems and heat pumps are commonly used today and how they work below. To learn how to use these technologies in your own home, see the Home Heating Systems section on Energy Saver. Furnaces and Boilers Furnaces heat air and distribute the heated air through a building using ducts. Boilers heat water, providing either hot water or steam for heating. Wood and Pellet Heating Provides a way to heat a building using biomass or waste sources. Electric Resistance Heating Can be supplied by centralized electric furnaces or by heaters in each room. Active Solar Heating Uses the sun to heat either air or liquid and can serve as a supplemental

31

Heating System Basics | Department of Energy  

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

Heating System Basics Heating System Basics Heating System Basics August 16, 2013 - 2:32pm Addthis A variety of heating technologies are available today. You can learn more about what heating systems and heat pumps are commonly used today and how they work below. To learn how to use these technologies in your own home, see the Home Heating Systems section on Energy Saver. Furnaces and Boilers Furnaces heat air and distribute the heated air through a building using ducts. Boilers heat water, providing either hot water or steam for heating. Wood and Pellet Heating Provides a way to heat a building using biomass or waste sources. Electric Resistance Heating Can be supplied by centralized electric furnaces or by heaters in each room. Active Solar Heating Uses the sun to heat either air or liquid and can serve as a supplemental

32

Feasibility Analysis For Heating Tribal Buildings with Biomass  

SciTech Connect

This report provides a feasibility study for the heating of Tribal buildings using woody biomass. The study was conducted for the Confederated Salish and Kootenai Tribes of the Flathead Reservation in western Montana. S&K Holding Company and TP Roche Company completed the study and worked together to provide the final report. This project was funded by the DOE's Tribal Energy Program.

Steve Clairmont; Micky Bourdon; Tom Roche; Colene Frye

2009-03-03T23:59:59.000Z

33

Remotely sensed heat anomalies linked with Amazonian forest biomass declines  

E-Print Network (OSTI)

with Amazonian forest biomass declines Michael Toomey, 1 Darof aboveground living biomass (p biomass declines, Geophys. Res.

Toomey, M.; Roberts, D. A.; Still, C.; Goulden, M. L.; McFadden, J. P.

2011-01-01T23:59:59.000Z

34

Energy Balances for Biomass Conversion Systems  

Science Journals Connector (OSTI)

Biomass conversion systems of any type, irrespective of ... measured on a consistent scale which identifies the energy efficiency of the process and of the overall system. Accurate energy balances, as well as mat...

Raphael Katzen

1983-01-01T23:59:59.000Z

35

Heat Integration Strategy for Economic Production of Combined Heat and Power from Biomass Waste  

Science Journals Connector (OSTI)

Heat Integration Strategy for Economic Production of Combined Heat and Power from Biomass Waste ... Dilution of hydrogen rich fuels resulting from coal or heavy hydrocarbon gasification processes with nitrogen prior to the entrance of the gas turbines may be desirable in precombustion carbon capture and storage (CCS) routes, in order to ensure safe operations of gas turbines. ...

Jhuma Sadhukhan; Kok Siew Ng; Nilay Shah; Howard J. Simons

2009-09-15T23:59:59.000Z

36

High Tonnage Forest Biomass Production Systems from Southern...  

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

High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations This...

37

Effects of Biomass Fuels on Engine & System Out Emissions for...  

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

Biomass Fuels on Engine & System Out Emissions for Short Term Endurance Effects of Biomass Fuels on Engine & System Out Emissions for Short Term Endurance Results of an...

38

EMERY BIOMASS GASIFICATION POWER SYSTEM  

SciTech Connect

Emery Recycling Corporation (now Emery Energy Company, LLC) evaluated the technical and economical feasibility of the Emery Biomass Gasification Power System (EBGPS). The gasifier technology is owned and being developed by Emery. The Emery Gasifier for this project was an oxygen-blown, pressurized, non-slagging gasification process that novelly integrates both fixed-bed and entrained-flow gasification processes into a single vessel. This unique internal geometry of the gasifier vessel will allow for tar and oil destruction within the gasifier. Additionally, the use of novel syngas cleaning processes using sorbents is proposed with the potential to displace traditional amine-based and other syngas cleaning processes. The work scope within this project included: one-dimensional gasifier modeling, overall plant process modeling (ASPEN), feedstock assessment, additional analyses on the proposed syngas cleaning process, plant cost estimating, and, market analysis to determine overall feasibility and applicability of the technology for further development and commercial deployment opportunities. Additionally, the project included the development of a detailed technology development roadmap necessary to commercialize the Emery Gasification technology. Process modeling was used to evaluate both combined cycle and solid oxide fuel cell power configurations. Ten (10) cases were evaluated in an ASPEN model wherein nine (9) cases were IGCC configurations with fuel-to-electricity efficiencies ranging from 38-42% and one (1) case was an IGFC solid oxide case where 53.5% overall plant efficiency was projected. The cost of electricity was determined to be very competitive at scales from 35-71 MWe. Market analysis of feedstock availability showed numerous market opportunities for commercial deployment of the technology with modular capabilities for various plant sizes based on feedstock availability and power demand.

Benjamin Phillips; Scott Hassett; Harry Gatley

2002-11-27T23:59:59.000Z

39

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

SciTech Connect

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

Payne, F.A.

1984-09-01T23:59:59.000Z

40

High Tonnage Forest Biomass Production Systems from Southern...  

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

DOE Biomass Program Review High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations DE-EE0001036 S. Taylor (Auburn University), R. Rummer (USDA Forest...

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


41

High Tonnage Forest Biomass Production Systems from Southern...  

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

Biomass Program Review High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations DE-EE0001036 S. Taylor (Auburn University), R. Rummer (USDA Forest...

42

Slovak Centre of Biomass Use for Energy Wood Fired Heating Plant in Slovakia  

E-Print Network (OSTI)

Slovak Centre of Biomass Use for Energy Slovakia 1 Wood Fired Heating Plant in Slovakia Energy energy User behaviour ESCOs Biomass Education Architects and engineers Wind Other Financial institutions countries it is already implemented for several years. #12;Slovak Centre of Biomass Use for Energy Slovakia

43

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":""}]}

44

Models of National Energy Systems -focusing on biomass energy  

E-Print Network (OSTI)

Models of National Energy Systems - focusing on biomass energy Poul Erik Grohnheit Systems Analysis models · International development of large energy models · Biomass energy · Upstream expansion of the Pan European model for biomass and crops · Basic elements in a crop model for Denmark· Basic elements

45

Oregon Hospital Heats Up with a Biomass Boiler | Department of Energy  

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

Oregon Hospital Heats Up with a Biomass Boiler Oregon Hospital Heats Up with a Biomass Boiler Oregon Hospital Heats Up with a Biomass Boiler December 27, 2012 - 4:30pm Addthis Using money from the Recovery Act, Blue Mountain Hospital replaced one of its 1950s crude oil boilers with a wood-pellet boiler -- saving the hospital about $100,000 a year in heating costs. | Photo courtesy of the Oregon Department of Energy. Using money from the Recovery Act, Blue Mountain Hospital replaced one of its 1950s crude oil boilers with a wood-pellet boiler -- saving the hospital about $100,000 a year in heating costs. | Photo courtesy of the Oregon Department of Energy. Julie McAlpin Communications Liaison, State Energy Program Why biomass? Wood was the first energy source used and man's main fuel source until the Industrial Revolution.

46

Heat transfer system  

DOE Patents (OSTI)

A heat transfer system for a nuclear reactor. Heat transfer is accomplished within a sealed vapor chamber which is substantially evacuated prior to use. A heat transfer medium, which is liquid at the design operating temperatures, transfers heat from tubes interposed in the reactor primary loop to spaced tubes connected to a steam line for power generation purposes. Heat transfer is accomplished by a two-phase liquid-vapor-liquid process as used in heat pipes. Condensible gases are removed from the vapor chamber through a vertical extension in open communication with the chamber interior.

McGuire, Joseph C. (Richland, WA)

1982-01-01T23:59:59.000Z

47

Heating systems for heating subsurface formations  

DOE Patents (OSTI)

Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

Nguyen, Scott Vinh (Houston, TX); Vinegar, Harold J. (Bellaire, TX)

2011-04-26T23:59:59.000Z

48

Effects of Biomass Fuels on Engine & System Out Emissions for...  

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

& Aftertreatment Systems -- DEER Conference 1 6 October 2011 Kevin Barnum Effects of Biomass Fuels on Engine & System Out Emissions for Short Term Endurance DEER 2011 Conference...

49

Original article Biomass of root and shoot systems  

E-Print Network (OSTI)

Original article Biomass of root and shoot systems of Quercus coccifera shrublands in Eastern Spain biomass of kermes oak shrublands (Quercus coccifera L.), an evergreen sclerophyllous species common- mass has been measured on 320 1-m2 plots. Total biomass varies with age and ranges between 0.4 (7

Paris-Sud XI, Université de

50

A Small Scale Solar Agricultural Dryer with Biomass Burner and Heat Storage Back-Up Heater  

Science Journals Connector (OSTI)

This paper describes a small scale solar agricultural dryer with a simple biomass burner and heat storage back-up heater. The key design features ... are the combination of direct and indirect type solar dryer, t...

Elieser Tarigan; Perapong Tekasakul

2009-01-01T23:59:59.000Z

51

Handbook of biomass downdraft gasifier engine systems  

SciTech Connect

This handbook has been prepared by the Solar Energy Research Institute under the US Department of Energy /bold Solar Technical Information Program/. It is intended as a guide to the design, testing, operation, and manufacture of small-scale (less than 200 kW (270 hp)) gasifiers. A great deal of the information will be useful for all levels of biomass gasification. The handbook is meant to be a practical guide to gasifier systems, and a minimum amount of space is devoted to questions of more theoretical interest.

Reed, T B; Das, A

1988-03-01T23:59:59.000Z

52

Microsoft Word - Draft Ft Yukon Biomass System EA_0220  

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

FOR A COMBINED POWER AND BIOMASS HEATING SYSTEM FORT YUKON, ALASKA U.S. Department of Energy Office of Energy Efficiency and Renewable Energy GOLDEN FIELD OFFICE In Cooperation with USDA RURAL UTILITIES SERVICE DENALI COMMISSION FEBRUARY 2013 ABBREVIATIONS AND ACRONYMS ADEC Alaska Department of Environmental Conservation AFRPA Alaska Forest Resources Practices Act BFE Base Flood Elevation BMP best management practice BTU British Thermal Unit CATG Council of Athabascan Tribal Governments CEQ Council on Environmental Quality CFR Code of Federal Regulations CHP Combined Heat and Power CO carbon monoxide CO 2 carbon dioxide CWA Clean Water Act dBA A-weighted decibel DBH diameter at breast height DOE U.S. Department of Energy EA Environmental Assessment

53

Solar heating system  

DOE Patents (OSTI)

An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

1982-01-01T23:59:59.000Z

54

Heat pump system  

DOE Patents (OSTI)

An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers. The system is assembled as a single roof top unit, with a vapor power generator and turbine and compressor thermally insulated from the heat exchangers, and with the indoor heat exchangers thermally insulated from the outdoor heat exchangers.

Swenson, Paul F. (Shaker Heights, OH); Moore, Paul B. (Fedhaven, FL)

1983-01-01T23:59:59.000Z

55

Heating and cooling system  

SciTech Connect

Heating and cooling of dwelling houses and other confined spaces is facilitated by a system in which thermal energy is transported between an air heating and cooling system in the dwelling and a water heat storage sink or source, preferably in the form of a swimming pool or swimming pool and spa combination. Special reversing valve circuitry and the use of solar collectors and liquid-to-liquid heat exchangers on the liquid side of the system , and special air valves and air modules on the air side of the system, enhance the system's efficiency and make it practical in the sense that systems employing the invention can utilize existing craft skills and building financing arrangements and building codes, and the like, without major modification.

Krumhansl, M.U.

1982-10-12T23:59:59.000Z

56

Heat rejection system  

DOE Patents (OSTI)

A cooling system for rejecting waste heat consists of a cooling tower incorporating a plurality of coolant tubes provided with cooling fins and each having a plurality of cooling channels therein, means for directing a heat exchange fluid from the power plant through less than the total number of cooling channels to cool the heat exchange fluid under normal ambient temperature conditions, means for directing water through the remaining cooling channels whenever the ambient temperature rises above the temperature at which dry cooling of the heat exchange fluid is sufficient and means for cooling the water.

Smith, Gregory C. (Richland, WA); Tokarz, Richard D. (Richland, WA); Parry, Jr., Harvey L. (Richland, WA); Braun, Daniel J. (Richland, WA)

1980-01-01T23:59:59.000Z

57

Decentralised energy systems based on biomass.  

E-Print Network (OSTI)

??Replacing fossil fuels with renewable energy sources is recognised as an important measure to mitigate climate change. Residual biomass from agriculture and forestry and short-rotation… (more)

Kimming, Marie

2015-01-01T23:59:59.000Z

58

Life cycle assessment of a biomass gasification combined-cycle power system  

SciTech Connect

The potential environmental benefits from biomass power are numerous. However, biomass power may also have some negative effects on the environment. Although the environmental benefits and drawbacks of biomass power have been debated for some time, the total significance has not been assessed. This study serves to answer some of the questions most often raised in regard to biomass power: What are the net CO{sub 2} emissions? What is the energy balance of the integrated system? Which substances are emitted at the highest rates? What parts of the system are responsible for these emissions? To provide answers to these questions, a life cycle assessment (LCA) of a hypothetical biomass power plant located in the Midwest United States was performed. LCA is an analytical tool for quantifying the emissions, resource consumption, and energy use, collectively known as environmental stressors, that are associated with converting a raw material to a final product. Performed in conjunction with a technoeconomic feasibility study, the total economic and environmental benefits and drawbacks of a process can be quantified. This study complements a technoeconomic analysis of the same process, reported in Craig and Mann (1996) and updated here. The process studied is based on the concept of power Generation in a biomass integrated gasification combined cycle (BIGCC) plant. Broadly speaking, the overall system consists of biomass production, its transportation to the power plant, electricity generation, and any upstream processes required for system operation. The biomass is assumed to be supplied to the plant as wood chips from a biomass plantation, which would produce energy crops in a manner similar to the way food and fiber crops are produced today. Transportation of the biomass and other materials is by both rail and truck. The IGCC plant is sized at 113 MW, and integrates an indirectly-heated gasifier with an industrial gas turbine and steam cycle. 63 refs., 34 figs., 32 tabs.

Mann, M.K.; Spath, P.L.

1997-12-01T23:59:59.000Z

59

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

District Solar Heating Biomass Conversion Wind CogenerationEnergy Systems Biomass Conversion . Neighborhood Housingplan. lL2. 3 Biomass Conversion Biomass conversion or the

Balderston, F.

2010-01-01T23:59:59.000Z

60

Systems and procedures for integrated recovery of forest biomass  

SciTech Connect

Whether recovery of forest biomass will become a common procedure depends on how acceptable biomass is for fuel and fiber, what the demand is for it, how stable is its supply, and how economic it is when it comes to energy. Manufacturers appear interested in continuing to develop machines and systems that recover biomass resulting from silvicultural treatments, final harvests, and site preparation. (Refs. 9).

Walbridge, T.A.; Stuart, W.B.

1983-03-01T23:59:59.000Z

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


61

Modular Biomass Systems Could Boost Rural Areas | Department of Energy  

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

Modular Biomass Systems Could Boost Rural Areas Modular Biomass Systems Could Boost Rural Areas Modular Biomass Systems Could Boost Rural Areas June 16, 2010 - 1:09pm Addthis Community Power Corporation's modular biomass systems can generate up to 100 kilowatts of energy. | Courtesy of Community Power Corporation Community Power Corporation's modular biomass systems can generate up to 100 kilowatts of energy. | Courtesy of Community Power Corporation Stephen Graff Former Writer & editor for Energy Empowers, EERE Increased ethanol production will help revitalize the rural economy and decrease America's dependence on foreign oil, but there are other ways to create opportunities in the farmlands. For Robb Walt, president of Community Power Corporation (CPC) in Littleton, Colo., one answer is community-scale, bio-energy service companies, or

62

Modular Biomass Systems Could Boost Rural Areas | Department of Energy  

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

Modular Biomass Systems Could Boost Rural Areas Modular Biomass Systems Could Boost Rural Areas Modular Biomass Systems Could Boost Rural Areas June 16, 2010 - 1:09pm Addthis Community Power Corporation's modular biomass systems can generate up to 100 kilowatts of energy. | Courtesy of Community Power Corporation Community Power Corporation's modular biomass systems can generate up to 100 kilowatts of energy. | Courtesy of Community Power Corporation Stephen Graff Former Writer & editor for Energy Empowers, EERE Increased ethanol production will help revitalize the rural economy and decrease America's dependence on foreign oil, but there are other ways to create opportunities in the farmlands. For Robb Walt, president of Community Power Corporation (CPC) in Littleton, Colo., one answer is community-scale, bio-energy service companies, or

63

Biomass Energy Heat Provision for Cooking and Heating in Developing Countries  

Science Journals Connector (OSTI)

Biomass cookstoves are at the nexus of food and energy poverty in developing countries. Superficially, biomass-fueled cookstove s are simple objects that contain a fire and transfer energy to a surface or v...

Ralph P. Overend

2012-01-01T23:59:59.000Z

64

Biomass Energy Heat Provision for Cooking and Heating in Developing Countries  

Science Journals Connector (OSTI)

Biomass cookstoves are at the nexus of food and energy poverty in developing countries. Superficially, biomass-fueled cookstove s are simple objects that contain a fire and transfer energy to a surface or v...

Ralph P. Overend

2013-01-01T23:59:59.000Z

65

Fluidized bed heat treating system  

DOE Patents (OSTI)

Systems for heat treating materials are presented. The systems typically involve a fluidized bed that contains granulated heat treating material. In some embodiments a fluid, such as an inert gas, is flowed through the granulated heat treating medium, which homogenizes the temperature of the heat treating medium. In some embodiments the fluid may be heated in a heating vessel and flowed into the process chamber where the fluid is then flowed through the granulated heat treating medium. In some embodiments the heat treating material may be liquid or granulated heat treating material and the heat treating material may be circulated through a heating vessel into a process chamber where the heat treating material contacts the material to be heat treated. Microwave energy may be used to provide the source of heat for heat treating systems.

Ripley, Edward B; Pfennigwerth, Glenn L

2014-05-06T23:59:59.000Z

66

Biomass and Bioenergy 31 (2007) 638645 Forest bioenergy system to reduce the hazard of wildfires  

E-Print Network (OSTI)

Biomass and Bioenergy 31 (2007) 638­645 Forest bioenergy system to reduce the hazard of wildfires for bioenergy. The start-up project is in the Nutrioso area of the Alpine Ranger District, Apache. The outlet for the wood fuel pellets is the growing market for house and business heating, and co

67

Biomass Plantation Inergy Systems and Sustainable DevelD~ment  

E-Print Network (OSTI)

.m Biomass Plantation Inergy Systems and Sustainable DevelD~ment ERIC D. LARSON AND ROBERT H poor manSOl ecause f'itSdirect useby combustion := :-Iuclear for domestic cooking and. Hydro hearing ranks ir ar the bor- rom of the ladderofPreferred Biomass DEV'ELOPING COUNTRIES energ

68

Air heating system  

DOE Patents (OSTI)

A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

1983-03-01T23:59:59.000Z

69

System, method, and apparatus for remote measurement of terrestrial biomass  

DOE Patents (OSTI)

A system, method, and/or apparatus for remote measurement of terrestrial biomass contained in vegetative elements, such as large tree boles or trunks present in an area of interest, are provided. The method includes providing an airborne VHF radar system in combination with a LiDAR system, overflying the area of interest while directing energy toward the area of interest, using the VHF radar system to collect backscatter data from the trees as a function of incidence angle and frequency, and determining a magnitude of the biomass from the backscatter data and data from the laser radar system for each radar resolution cell. A biomass map is generated showing the magnitude of the biomass of the vegetative elements as a function of location on the map by using each resolution cell as a unique location thereon. In certain preferred embodiments, a single frequency is used with a linear array antenna.

Johnson, Patrick W (Jefferson, MD)

2011-04-12T23:59:59.000Z

70

Selective Conversion of Biomass Hemicellulose to Furfural Using Maleic Acid with Microwave Heating  

Science Journals Connector (OSTI)

Selective Conversion of Biomass Hemicellulose to Furfural Using Maleic Acid with Microwave Heating ... With the aim to develop an ecological method to convert xylose into furfural without the use of inorganic acids, a ... ... Sulfonated lignin was converted to phenol and phenolic compounds using a conventional batch or a microwave reactor. ...

Eurick S. Kim; Shuo Liu; Mahdi M. Abu-Omar; Nathan S. Mosier

2012-01-10T23:59:59.000Z

71

Geothermal district heating systems  

SciTech Connect

Ten district heating demonstration projects and their present status are described. The projects are Klamath County YMCA, Susanville District Heating, Klamath Falls District Heating, Reno Salem Plaza Condominium, El Centro Community Center Heating/Cooling, Haakon School and Business District Heating, St. Mary's Hospital, Diamond Ring Ranch, Pagosa Springs District Heating, and Boise District Heating.

Budney, G.S.; Childs, F.

1982-01-01T23:59:59.000Z

72

Innovative biomass to power conversion systems based on cascaded supercritical CO2 Brayton cycles  

Science Journals Connector (OSTI)

Abstract In the small to medium power range the main technologies for the conversion of biomass sources into electricity are based either on reciprocating internal combustion or organic Rankine cycle engines. Relatively low energy conversion efficiencies are obtained in both systems due to the thermodynamic losses in the conversion of biomass into syngas in the former, and to the high temperature difference in the heat transfer between combustion gases and working fluid in the latter. The aim of this paper is to demonstrate that higher efficiencies in the conversion of biomass sources into electricity can be obtained using systems based on the supercritical closed CO2 Brayton cycles (s-CO2). The s-CO2 system analysed here includes two cascaded supercritical CO2 cycles which enable to overcome the intrinsic limitation of the single cycle in the effective utilization of the whole heat available from flue gases. Both part-flow and simple supercritical CO2 cycle configurations are considered and four boiler arrangements are investigated to explore the thermodynamic performance of such systems. These power plant configurations, which were never explored in the literature for biomass conversion into electricity, are demonstrated here to be viable options to increase the energy conversion efficiency of small-to-medium biomass fired power plants. Results of the optimization procedure show that a maximum biomass to electricity conversion efficiency of 36% can be achieved using the cascaded configuration including a part flow topping cycle, which is approximately 10%-points higher than that of the existing biomass power plants in the small to medium power range.

Giovanni Manente; Andrea Lazzaretto

2014-01-01T23:59:59.000Z

73

Economic development through biomass system integration. Volumes 2--4  

SciTech Connect

Report documents a feasibility study for an integrated biomass power system, where an energy crop (alfalfa) is the feedstock for a processing plant and a power plant (integrated gasification combined cycle) in a way that benefits the facility owners.

DeLong, M.M.

1995-10-01T23:59:59.000Z

74

Heat and Power Systems Design  

E-Print Network (OSTI)

HEAT AND POWER SYSTEMS DESIGN H. D. Spriggs and J. V. Shah, Leesburg. VA ABSTRACT The selection of heat and power systems usually does not include a thorough analysis of the process heating. cooling and power requirements. In most cases..., these process requirements are accepted as specifications before heat and power systems are selected and designed. In t~is article we describe how Process Integration using Pinch Technology can be used to understand and achieve the minimum process heating...

Spriggs, H. D.; Shah, J. V.

75

Technical and economic analysis of different cogeneration systems for energy production from biomass  

Science Journals Connector (OSTI)

This paper compares the results of a techno-economic performance analysis of seven plants for energy production from biomass with the aim of identifying the most effective solution. Small (?250 KWe) and micro (?100 KWe) size plants were investigated: 50 kWe diesel internal combustion engine coupled with a gasifier and 35 kWe Stirling engine coupled with a gasifier with an overall efficiency of 41.1% and 87.5% respectively, two biomass cogenerators, one of 25 kWe and the other of 100 kWe, 250 kWe Otto internal combustion engine coupled with a gasifier and 250 kWe diesel internal combustion engine coupled with a gasifier and 238 kWe biomass ORC plant. The technical analysis provided calculations for specific biomass consumption, electricity generation, heat produced and overall system efficiency. The economic evaluation was carried on through a discounted cash flow analysis. Data were provided by literature, analysis of case study at Italian and European level, and directly by the manufacturers of cogeneration systems. The results showed that a combined heat and power (CHP) generator is the best solution because it is economically viable with a high NPV and a PBP of five years and also technically performing with a global efficiency of 78.2% and a low biomass consumption.

Giancarlo Giacchetta; Mariella Leporini; Barbara Marchetti

2014-01-01T23:59:59.000Z

76

CATALYTIC BIOMASS LIQUEFACTION  

E-Print Network (OSTI)

Solvent Systems Catalystic Biomass Liquefaction Investigatereactor Product collection Biomass liquefaction process12-13, 1980 CATALYTIC BIOMASS LIQUEFACTION Sabri Ergun,

Ergun, Sabri

2013-01-01T23:59:59.000Z

77

Heat Exchangers for Solar Water Heating Systems | Department of Energy  

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

Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems May 30, 2012 - 3:40pm Addthis Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper, because it is a good thermal conductor and has greater resistance to corrosion. Types of Heat Exchangers Solar water heating systems use three types of heat exchangers: Liquid-to-liquid A liquid-to-liquid heat exchanger uses a heat-transfer fluid that

78

Regional Waste Systems Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Biomass Facility Biomass Facility Jump to: navigation, search Name Regional Waste Systems Biomass Facility Facility Regional Waste Systems Sector Biomass Facility Type Municipal Solid Waste Location Cumberland County, Maine Coordinates 43.8132979°, -70.3870587° 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":43.8132979,"lon":-70.3870587,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

79

Engineered microbial systems for enhanced conversion of lignocellulosic biomass  

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

752; 752; NO. OF PAGES 6 Please cite this article in press as: Elkins JG, et al. Engineered Q1microbial systems for enhanced conversion of lignocellulosic biomass, Curr Opin Biotechnol (2010), doi:10.1016/ j.copbio.2010.05.008 Available online at www.sciencedirect.com Engineered microbial systems for enhanced conversion of lignocellulosic biomass James G Elkins, Babu Raman and Martin Keller In order for plant biomass to become a viable feedstock for meeting the future demand for liquid fuels, efficient and cost- effective processes must exist to breakdown cellulosic materials into their primary components. A one-pot conversion strategy or, consolidated bioprocessing, of biomass into ethanol would provide the most cost-effective route to renewable fuels and the realization of this technology is being actively pursued by both multi-disciplinary research centers and

80

[Waste water heat recovery system  

SciTech Connect

The production capabilities for and field testing of the heat recovery system are described briefly. Drawings are included.

Not Available

1993-04-28T23:59:59.000Z

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


81

FOA for the Demonstration of an Integrated Biorefinery System: Abengoa Bioenergy Biomass of Kansas, LLC  

Office of Energy Efficiency and Renewable Energy (EERE)

FOA for the Demonstration of an Integrated Biorefinery System: Abengoa Bioenergy Biomass of Kansas, LLC.

82

BioSAR Airborne Biomass Sensing System  

SciTech Connect

This CRADA was developed to enable ORNL to assist American Electronics, Inc. test a new technology--BioSAR. BioSAR is a an airborne, low frequency (80-120 MHz {approx} FM radio frequencies) synthetic aperture radar (SAR) technology which was designed and built for NASA by ZAI-Amelex under Patrick Johnson's direction. At these frequencies, leaves and small branches are nearly transparent and the majority of the energy reflected from the forest and returned to the radar is from the tree trunks. By measuring the magnitude of the back scatter, the volume of the tree trunk and therefore the biomass of the trunks can be inferred. The instrument was successfully tested on tropical rain forests in Panama. Patrick Johnson, with American Electronics, Inc received a Phase II SBIR grant from DOE Office of Climate Change to further test and refine the instrument. Mr Johnson sought ORNL expertise in measuring forest biomass in order for him to further validate his instrument. ORNL provided ground truth measurements of forest biomass at three locations--the Oak Ridge Reservation, Weyerhaeuser Co. commercial pine plantations in North Carolina, and American Energy and Power (AEP) Co. hardwood forests in southern Ohio, and facilitated flights over these forests. After Mr. Johnson processed the signal data from BioSAR instrument, the processed data were given to ORNL and we attempted to derive empirical relationships between the radar signals and the ground truth forest biomass measurements using standard statistical techniques. We were unsuccessful in deriving such relationships. Shortly before the CRADA ended, Mr Johnson discovered that FM signal from local radio station broadcasts had interfered with the back scatter measurements such that the bulk of the signal received by the BioSAR instrument was not backscatter from the radar but rather was local radio station signals.

Graham, R.L.; Johnson, P.

2007-05-24T23:59:59.000Z

83

Microsoft PowerPoint - Quinault Indian Nation Biomass Renewable...  

Energy Savers (EERE)

drawings and QIN topographic information into preliminary site plan * Reviewed heating systems of existing buildings and created action plan to incorporate biomass heating...

84

Primary energy consumption of the dwelling with solar hot water system and biomass boiler  

Science Journals Connector (OSTI)

Abstract This paper presents a new methodology, based on the energy performance of buildings Directive related European norms. It is developed to overcome ambiguities and incompleteness of these standards in determining the delivered and primary energy. The available procedures from the present “Algorithm for determining the energy demands and efficiency of technical systems in buildings”, normally used for energy performance certification of buildings, also allow detailed analyzes of the influence of particular system components on the overall system energy efficiency. The calculation example is given for a Croatian reference dwelling, equipped with a solar hot water system, backed up with a biomass boiler for space heating and domestic hot water purposes as a part of the dwelling energy performance certification. Calculations were performed for two cases corresponding to different levels of the dwelling thermal insulation with an appropriate heating system capacity, in order to investigate the influence of the building heat losses on the system design and energy consumption. The results are compared against those obtained for the conventional system with a gas boiler in terms of the primary energy consumption as well as of investment and operating costs. These results indicate great reduction in both delivered and primary energy consumption when a solar system with biomass boiler is used instead of the conventional one. Higher savings are obtained in the case of the dwelling with higher energy need for space heating. Such dwellings also have a shorter payback period than the ones with better thermal insulation.

Mihaela Berkovi?-Šubi?; Martina Rauch; Damir Dovi?; Mladen Andrassy

2014-01-01T23:59:59.000Z

85

MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE  

E-Print Network (OSTI)

Design Parameters Marine Biomass Production Sea Farmof Various Types of Biomass . Biomethanation Parameters.Proceedings, Fuels from Biomass Symposium. University of

Haven, Kendall F.

2011-01-01T23:59:59.000Z

86

MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE  

E-Print Network (OSTI)

commercial farm. A biomass energy farm must cover a largeof Symposium on Energy from Biomass and Wastes, Washington,Biomass Yield Energy Content Upwelling

Haven, Kendall F.

2011-01-01T23:59:59.000Z

87

Development of a commercial enzymes system for lignocellulosic biomass saccharification  

SciTech Connect

DSM Innovation Inc., in its four year effort was able to evaluate and develop its in-house DSM fungal cellulolytic enzymes system to reach enzyme efficiency mandates set by DoE Biomass program MYPP goals. DSM enzyme cocktail is uniquely active at high temperature and acidic pH, offering many benefits and product differentiation in 2G bioethanol production. Under this project, strain and process development, ratio optimization of enzymes, protein and genetic engineering has led to multitudes of improvement in productivity and efficiency making development of a commercial enzyme system for lignocellulosic biomass saccharification viable. DSM is continuing further improvement by additional biodiversity screening, protein engineering and overexpression of enzymes to continue to further lower the cost of enzymes for saccharification of biomass.

Manoj Kumar

2012-12-20T23:59:59.000Z

88

Process Heating Systems | Department of Energy  

Office of Environmental Management (EM)

Efficiency in Process Heating Systems Roadmap for Process Heating Technology Reduce Natural Gas Use in Your Industrial Process Heating Systems Save Energy Now in Your Process...

89

Experimental investigation on an entrained flow type biomass gasification system using coconut coir dust as powdery biomass feedstock  

Science Journals Connector (OSTI)

Based on an entrained flow concept, a prototype atmospheric gasification system has been designed and developed in the laboratory for gasification of powdery biomass feedstock such as rice husks, coconut coir dust, saw dust etc. The reactor was developed by adopting L/D (height to diameter) ratio of 10, residence time of about 2 s and a turn down ratio (TDR) of 1.5. The experimental investigation was carried out using coconut coir dust as biomass feedstock with a mean operating feed rate of 40 kg/h The effects of equivalence ratio in the range of 0.21–0.3, steam feed at a fixed flow rate of 12 kg/h, preheat on reactor temperature, product gas yield and tar content were investigated. The gasifier could able to attain high temperatures in the range of 976–1100 °C with gas lower heating value (LHV) and peak cold gas efficiency (CGE) of 7.86 MJ/Nm3 and 87.6% respectively.

P.K. Senapati; S. Behera

2012-01-01T23:59:59.000Z

90

Heat Machines and Quantum Systems  

E-Print Network (OSTI)

Heat Machines and Quantum Systems: Towards the Third Law Thesis submitted for the degree of "Doctor Machines and Quantum Systems: Towards the Third Law Thesis submitted for the degree of "Doctor

Kosloff, Ronnie

91

Biomass heat pipe reformer—design and performance of an indirectly heated steam gasifier  

Science Journals Connector (OSTI)

Indirectly heated dual fluidized bed (DFB) gasifiers are a promising option for the production ... syngas, in particular in the small- and medium-scale range. The application of so-called ... pipes solves the key...

Jürgen Karl

2014-03-01T23:59:59.000Z

92

PIA - Northeast Home Heating Oil Reserve System (Heating Oil...  

Office of Environmental Management (EM)

Home Heating Oil Reserve System (Heating Oil) More Documents & Publications PIA - WEB Physical Security Major Application PIA - GovTrip (DOE data) PIA - WEB Unclassified...

93

INSULATION OF HEATING SYSTEMS  

Science Journals Connector (OSTI)

... C. PALLOT gave a Cantor Lecture to the Royal Society of Arts on “Thermal Insulation at Medium Temperature” on November 23 ; the lecture, which included many topics of ... many topics of current interest, has now been published1. In a bulletin on heat insulation issued by the Ministry of Fuel and Power, it was pointed out that "In ...

1943-05-22T23:59:59.000Z

94

Waste Heat Management Options: Industrial Process Heating Systems  

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

Heat Management Options Heat Management Options Industrial Process Heating Systems By Dr. Arvind C. Thekdi E-mail: athekdi@e3minc.com E3M, Inc. August 20, 2009 2 Source of Waste Heat in Industries * Steam Generation * Fluid Heating * Calcining * Drying * Heat Treating * Metal Heating * Metal and Non-metal Melting * Smelting, agglomeration etc. * Curing and Forming * Other Heating Waste heat is everywhere! Arvind Thekdi, E3M Inc Arvind Thekdi, E3M Inc 3 Waste Heat Sources from Process Heating Equipment * Hot gases - combustion products - Temperature from 300 deg. F. to 3000 deg.F. * Radiation-Convection heat loss - From temperature source of 500 deg. F. to 2500 deg. F. * Sensible-latent heat in heated product - From temperature 400 deg. F. to 2200 deg. F. * Cooling water or other liquids - Temperature from 100 deg. F. to 180 deg. F.

95

Economic development through biomass system integration: Volume 1  

SciTech Connect

This report documents a feasibility study for an integrated biomass power system, where an energy crop (alfalfa) is the feedstock for a processing plant and a power plant (integrated gasification combined cycle) in a way that benefits the facility owners. Chapters describe alfalfa basics, production risks, production economics, transportation and storage, processing, products, market analysis, business analysis, environmental impact, and policy issues. 69 figs., 63 tabs.

DeLong, M.M. [Northern States Power Co., Minneapolis, MN (United States)

1995-10-01T23:59:59.000Z

96

Solar air heating system for combined DHW and space heating  

E-Print Network (OSTI)

Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren �stergaard Jensen

97

Instrumentation and tar measurement systems for a downdraft biomass gasifier.  

E-Print Network (OSTI)

??Biomass gasification is a promising route utilizing biomass materials to produce fuels and chemicals. Gas product from the gasification process is so called synthesis gas… (more)

Hu, Ming

2009-01-01T23:59:59.000Z

98

Stirling engines in generating heat and electricity for micro: CHP systems  

Science Journals Connector (OSTI)

In this paper, an analysis of different generating heat and electricity systems with Stirling engine is made from the point of view of benefits and limitations, both operational and economic and environmental. Stirling engine has the ability to work ... Keywords: biomass, fossil fuels, generating heat and electricity system, m-CHP, stirling engine

Dan Scarpete; Krisztina Uzuneanu

2011-03-01T23:59:59.000Z

99

Development of Practical Stirling Engine for Co-Generation System Using Woody Biomass Fuels  

Science Journals Connector (OSTI)

With this background, in 2005, we manufactured a practical Stirling engine using biomass fuels. And we proposed a unique co-generation system using a practical Stirling engine that utilizes woody biomass fuel suc...

Akira Hoshi; Nobutoshi Tezuka; Seizi Sasaki…

2009-01-01T23:59:59.000Z

100

The influence of feedstock drying on the performance and economics of a biomass gasifier–engine CHP system  

Science Journals Connector (OSTI)

The need to dry biomass feedstocks before they can be gasified can place a large energy and capital cost burden on small-to-medium scale biomass gasification plants for the production of heat and power. Drying may not always be unavoidable, but as biomass moisture content to the gasifier increases, the quality of the product gas deteriorates along with the overall performance of the whole system. This system modelling study addresses the influence of feedstock moisture content both before and after drying on the performance and cost of a biomass gasifier–engine system for combined heat and power at a given scale and feedstock cost. The scale range considered 0.5–3.0 MWe. The system comprises an updraft gasifier with external thermal and catalytic tar cracking reactors, gas clean-up and a spark-ignition gas engine. A spreadsheet-based system model is constructed, with individual worksheets corresponding to sub-models of system components, and a number of drying technology options and modes of operation are examined. Wherever possible, data supplied by manufacturers or taken from real systems is used in the construction of the sub-models, particularly in the derivation of cost functions.

J.G. Brammer; A.V. Bridgwater

2002-01-01T23:59:59.000Z

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


101

DOE/EA-1605: Environmental Assessment for Biomass Cogeneration and Heating Facilities at the Savannah River Site (August 2008)  

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

605 605 ENVIRONMENTAL ASSESSMENT FOR BIOMASS COGENERATION AND HEATING FACILITIES AT THE SAVANNAH RIVER SITE AUGUST 2008 U. S. DEPARTMENT OF ENERGY SAVANNAH RIVER OPERATIONS OFFICE SAVANNAH RIVER SITE DOE/EA-1605 ENVIRONMENTAL ASSESSMENT FOR BIOMASS COGENERATION AND HEATING FACILITIES AT THE SAVANNAH RIVER SITE AUGUST 2008 U.S. DEPARTMENT OF ENERGY SAVANNAH RIVER OPERATIONS OFFICE SAVANNAH RIVER SITE This page intentionally left blank - i - TABLE OF CONTENTS Page 1.0 INTRODUCTION ...................................................................................................1 1.1 Background and Proposed Action ...............................................................1 1.2 Purpose and Need ........................................................................................4

102

Economic development through biomass systems integration in central Florida  

SciTech Connect

A biomass to energy system for central Florida was conceptualized with sugarcane as the main feedstock. Additional feedstocks include elephantgrass, leucaena (woody tropical legume), and Eucalyptus. Juice will be pressed from sugarcane and sugars fermented into ethanol with conventional technology. Enough sugarcane will be grown to supply a conventional ethanol plant with juice for a 330 day operating period each yr. Juice will be condensed to 24 degrees Brix for direct conversion during the approximately 100 day harvest season and to 70 degrees Brix for storage and use the remaining 230 days. Residues (mainly lignin), from converting lignocellulosic materials to ethanol, will fuel the plant including evaporators for sugarcane juice. Sugarcane presscake, elephantgrass, leucaena, and Eucalyptus will be feedstocks for the lignocellulose conversion processes. The lignocellulose plant will be sized to convert all sugarcane presscake as it is produced to reduce storage costs. Elephantgrass, leucaena and Eucalyptus will feed the plant outside sugarcane harvest season. The biomass/energy system will produce 123,230,000 L (32,830,000 gal) of ethanol per year with 90% conversion of sugars from juice, hemicellulose, and cellulose to ethanol. Estimated cost of producing ethanol form various feedstocks include: sugarcane $0.25/L ($0.94/gal), elephantgrass $0.30/L ($1.13/gal), 1 leucaena $0.28/L ($1.06/gal), and Eucalyptus $0.28/L (1.07/gal). Future opportunities exist for development of a chemical industry based on lignocellulose materials from biomass.

Stricker, J.A.; Rahmani, M.; Hodges, A.W. [Univ. of Florida, Gainesville, FL (United States)] [and others

1995-11-01T23:59:59.000Z

103

High-Throughput Pretreatment and Hydrolysis Systems for Screening Biomass Species in Aqueous Pretreatment of Plant Biomass  

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

High-throughput High-throughput Pretreatment and Hydrolysis Systems for Screening Biomass Species in Aqueous Pretreatment of Plant Biomass Jaclyn D. DeMartini 1,2,3,Ã and Charles E. Wyman 1,2,3 1 Department of Chemical and Environmental Engineering, University of California, Riverside, USA 2 Center for Environmental Research and Technology, University of California, Riverside, USA 3 BioEnergy Science Center, Oak Ridge, USA 22.1 Introduction: The Need for High-throughput Technologies The primary barrier to low-cost biological conversion of lignocellulosic biomass to renewable fuels and chemicals is plant recalcitrance, that is to say, resistance of cell walls to deconstruction by enzymes or microbes [1,2]. However, the discovery and use of biomass species with reduced recalcitrance, when com- bined with optimized pretreatment processes and enzyme mixtures, could potentially

104

Heat Pump System Basics | Department of Energy  

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

Heat Pump System Basics Heat Pump System Basics Heat Pump System Basics August 19, 2013 - 11:02am Addthis Like a refrigerator, heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer. Because they move heat rather than generate heat, heat pumps can provide up to four times the amount of energy they consume. Air-Source Heat Pump Transfers heat between the inside of a building and the outside air. Ductless Mini-Split Heat Pump Ductless versions of air-source heat pumps. Absorption Heat Pump Uses heat as its energy source. Geothermal Heat Pumps Use the constant temperature of the earth as the exchange medium instead of the outside air temperature. Addthis Related Articles A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar.

105

Liquid Phase Heating Systems  

E-Print Network (OSTI)

saturation pressure is ju'st under 278 psig. To this, pump head, pump NPSH and static head due to elevated piping must l be added to arrive at total pressure in a steam cushioned HTW system. Nitrogen cushioned systems are more common, and expansion...

Mordt, E. H.

1979-01-01T23:59:59.000Z

106

Simulation Models for Improved Water Heating Systems  

E-Print Network (OSTI)

The DLM accounts for the distribution heat loss within eachHot-Water Distribution System Piping Heat Loss Factors—PhaseHot Water Distribution System Piping Heat Loss Factors-

Lutz, Jim

2014-01-01T23:59:59.000Z

107

Heat pump having improved defrost system  

DOE Patents (OSTI)

A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger. 2 figs.

Chen, F.C.; Mei, V.C.; Murphy, R.W.

1998-12-08T23:59:59.000Z

108

Waste Heat Management Options: Industrial Process Heating Systems  

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

itself * Waste heat recovery or auxiliary or adjoining systems within a plant * Waste heat to power conversion Recycle Copyrighted - E3M Inc. August 20, 2009 Arvind Thekdi, E3M...

109

Fluidized Bed Combustion of Solid Biomass for Electricity and/or Heat Generation  

Science Journals Connector (OSTI)

Fluidised bed combustion (FBC) technology was developed in the ... . The FBC technology was soon expanded for biomass and other low-grade fuels, which have ... a definite trend to widen the range of biomass fuels...

Panagiotis Grammelis; Emmanouil Karampinis…

2011-01-01T23:59:59.000Z

110

Alaska Gateway School District Adopts Combined Heat and Power  

Office of Energy Efficiency and Renewable Energy (EERE)

Tok School's use of a biomass combined heat and power system is helping the school to save on energy costs.

111

Heat Distribution Systems | Department of Energy  

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

Distribution Systems Distribution Systems Heat Distribution Systems May 16, 2013 - 5:26pm Addthis Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Heat is distributed through your home in a variety of ways. Forced-air systems use ducts that can also be used for central air conditioning and heat pump systems. Radiant heating systems also have unique heat distribution systems. That leaves two heat distribution systems -- steam radiators and hot water radiators. Steam Radiators Steam heating is one of the oldest heating technologies, but the process of boiling and condensing water is inherently less efficient than more modern systems, plus it typically suffers from significant lag times between the

112

Heat Pump Systems | Department of Energy  

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

Pump Systems Pump Systems Heat Pump Systems May 16, 2013 - 5:33pm Addthis A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar. A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar. What does this mean for me? Heat pumps can supply heat, cooling, and hot water. Your climate and site will determine the type of heat pump most appropriate for your home. For climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator, heat pumps use electricity to move heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. During the heating season, heat pumps move heat from the cool outdoors into

113

High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations  

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

This abstract outlinse a project that is designing and demonstrating a high productivity system to harvest, process, and transport woody biomass from southern pine plantations.

114

Biomass pyrolysis processes: performance parameters and their influence on biochar system benefits.  

E-Print Network (OSTI)

??This study focuses on performance of biomass pyrolysis processes for use in biochar systems. Objectives are to understand the range of control of such processes… (more)

Brownsort, Peter A

2009-01-01T23:59:59.000Z

115

Development of a system for characterizing biomass quality of lignocellulosic feedstocks for biochemical conversion.  

E-Print Network (OSTI)

??The purpose of this research was twofold: (i) to develop a system for screening lignocellulosic biomass feedstocks for biochemical conversion to biofuels and (ii) to… (more)

Murphy, Patrick Thomas

2009-01-01T23:59:59.000Z

116

Experimental Research on Solar Assisted Heat Pump Heating System with Latent Heat Storage  

E-Print Network (OSTI)

-reaching meaning of solving energy and environment problems if new type energy conservation and environment protection heating system ? solar assisted ground-source heat pump (SAGHP) heating system with a latent heat storage tank will be practical... was established at the laboratory of construction energy conservation in Harbin Institute of Technology (HIT) in 2004. It added a latent heat storage tank in original SAGHP system. The schematic diagram of the system is shown in Figure 1. The experimental...

Han, Z.; Zheng, M.; Liu, W.; Wang, F.

2006-01-01T23:59:59.000Z

117

Heat pumps and under floor heating as a heating system for Finnish low-rise residential buildings.  

E-Print Network (OSTI)

??In bachelor’s thesis the study of under floor heating system with ground source heat pump for the heat transfers fluid heating is considered. The case… (more)

Chuduk, Svetlana

2010-01-01T23:59:59.000Z

118

Biomass Basics  

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

Biomass is an energy resource derived from organic matter, which includes wood, agricultural waste, and other living-cell material that can be burned to produce heat energy. It also includes algae,...

119

Design of Heat Exchanger for Heat Recovery in CHP Systems  

E-Print Network (OSTI)

The objective of this research is to review issues related to the design of heat recovery unit in Combined Heat and Power (CHP) systems. To meet specific needs of CHP systems, configurations can be altered to affect different factors of the design...

Kozman, T. A.; Kaur, B.; Lee, J.

120

Combined Municipal Solid Waste and biomass system optimization for district energy applications  

SciTech Connect

Highlights: • Combined energy conversion of MSW and agricultural residue biomass is examined. • The model optimizes the financial yield of the investment. • Several system specifications are optimally defined by the optimization model. • The application to a case study in Greece shows positive financial yield. • The investment is mostly sensitive on the interest rate, the investment cost and the heating oil price. - Abstract: Municipal Solid Waste (MSW) disposal has been a controversial issue in many countries over the past years, due to disagreement among the various stakeholders on the waste management policies and technologies to be adopted. One of the ways of treating/disposing MSW is energy recovery, as waste is considered to contain a considerable amount of bio-waste and therefore can lead to renewable energy production. The overall efficiency can be very high in the cases of co-generation or tri-generation. In this paper a model is presented, aiming to support decision makers in issues relating to Municipal Solid Waste energy recovery. The idea of using more fuel sources, including MSW and agricultural residue biomass that may exist in a rural area, is explored. The model aims at optimizing the system specifications, such as the capacity of the base-load Waste-to-Energy facility, the capacity of the peak-load biomass boiler and the location of the facility. Furthermore, it defines the quantity of each potential fuel source that should be used annually, in order to maximize the financial yield of the investment. The results of an energy tri-generation case study application at a rural area of Greece, using mixed MSW and biomass, indicate positive financial yield of investment. In addition, a sensitivity analysis is performed on the effect of the most important parameters of the model on the optimum solution, pinpointing the parameters of interest rate, investment cost and heating oil price, as those requiring the attention of the decision makers. Finally, the sensitivity analysis is enhanced by a stochastic analysis to determine the effect of the volatility of parameters on the robustness of the model and the solution obtained.

Rentizelas, Athanasios A., E-mail: arent@central.ntua.gr; Tolis, Athanasios I., E-mail: atol@central.ntua.gr; Tatsiopoulos, Ilias P., E-mail: itat@central.ntua.gr

2014-01-15T23:59:59.000Z

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


121

Optimization of the Heating System Operation  

E-Print Network (OSTI)

on the basis of the variation of outdoor temperature, and in this way, the heating system can be optimized....

Xu, W.; Mao, S.

2006-01-01T23:59:59.000Z

122

Chapter 5 - Solar Water-Heating Systems  

Science Journals Connector (OSTI)

Abstract Chapter 5 is on solar water-heating systems. Both passive and active systems are described. Passive systems include thermosiphon and integrated collector storage systems. The former include theoretical performance of thermosiphon solar water heaters, reverse circulation in thermosiphon systems, vertical against horizontal tank configurations, freeze protection, and tracking thermosiphons. Subsequently, active systems are described, which include direct circulation systems, indirect water-heating systems, air water-heating systems, heat pump systems and pool heating systems, which include the analysis of various heat losses like evaporation, radiation, convection heat losses, make-up water load, and solar radiation-heat gain. Then the characteristics and thermal analysis of heat storage systems for both water and air systems are presented. The module and array design methods are then described and include the effects of shading, thermal expansion, galvanic corrosion, array sizing, heat exchangers, pipe and duct losses, partially shaded collectors and over-temperature protection—followed by an analysis of the characteristics of differential thermostats. Finally, methods to calculate the hot water demand are given as well as a review of international standards used to evaluate the solar water heaters performance. The chapter includes also simple system models and practical considerations for the setup of solar water-heating systems, which include: pipes, supports and insulation; pumps; valves and instrumentation.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

123

Urban Sewage Delivery Heat Transfer System (2): Heat Transfer  

E-Print Network (OSTI)

The thimble delivery heat-transfer (TDHT) system is one of the primary modes to utilize the energy of urban sewage. Using the efficiency-number of transfer units method ( ), the heat-transfer efficiencies of the parallel-flow and reverse-flow TDTH...

Zhang, C.; Wu, R.; Li, X.; Li, G.; Zhuang, Z.; Sun, D.

2006-01-01T23:59:59.000Z

124

Seven Ways to Optimize Your Process Heat System | Department...  

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

Optimize Your Process Heat System This brief outlines the seven Best Bets for Process Heating System Savings and Improvements. Seven Ways to Optimize Your Process Heat System...

125

Integration of biomass fast pyrolysis and precedent feedstock steam drying with a municipal combined heat and power plant  

Science Journals Connector (OSTI)

Abstract Biomass fast pyrolysis (BFP) is a promising pre-treatment technology for converting biomass to transport fuel and in the future also for high-grade chemicals. BFP can be integrated with a municipal combined heat and power (CHP) plant. This paper shows the influence of BFP integration on a CHP plant's main parameters and its effect on the energetic and environmental performance of the connected district heating network. The work comprises full- and part-load operation of a CHP plant integrated with BFP and steam drying. It also evaluates different usage alternatives for the BFP products (char and oil). The results show that the integration is possible and strongly beneficial regarding energetic and environmental performance. Offering the possibility to provide lower district heating loads, the operation hours of the plant can be increased by up to 57%. The BFP products should be sold rather than applied for internal use as this increases the district heating network's primary energy efficiency the most. With this integration strategy future CHP plants can provide valuable products at high efficiency and also can help to mitigate global CO2 emissions.

Thomas Kohl; Timo P. Laukkanen; Mika P. Järvinen

2014-01-01T23:59:59.000Z

126

Gasifier system identification for biomass power plants using response surface method  

Science Journals Connector (OSTI)

Biomass in the form of wood has been used by human as a source of energy for a long period of time. Recently, the use of renewable energy sources has been widely experienced in domestic, commercial, and industrial appliances. This has resulted in a greater ... Keywords: biomass, gasifier System, identification, modelling, response surface method

J. Satonsaowapak; T. Ratniyomchai; T. Kulworawanichpong; P. Pao-La-Or; B. Marungsri; A. Oonsivilai

2010-02-01T23:59:59.000Z

127

Heat engine generator control system  

DOE Patents (OSTI)

An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power.

Rajashekara, Kaushik (Carmel, IN); Gorti, Bhanuprasad Venkata (Towson, MD); McMullen, Steven Robert (Anderson, IN); Raibert, Robert Joseph (Fishers, IN)

1998-01-01T23:59:59.000Z

128

Heat engine generator control system  

DOE Patents (OSTI)

An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power. 8 figs.

Rajashekara, K.; Gorti, B.V.; McMullen, S.R.; Raibert, R.J.

1998-05-12T23:59:59.000Z

129

Thermostatically controlled solar heating and cooling system  

SciTech Connect

This patent describes a solar heating and cooling system for simultaneously heating or cooling an ambient air system within a building, heating a hot water supply for domestic use within the building and heating or cooling a swimming pool adjacent the building comprising a building. This comprises a swimming pool as a primary water source, a solar connector connected to the swimming pool, a heat pump for controlling ambient air temperature within the building, an energy conservation unit connected to the heat pump and to the hot water supply for utilizing hot gases from the heat pump to heat water in the hot water supply and an air heat exchanger connected to the air system and to the heat pump for selectively heating or cooling air in the building. Also a water heat exchanger is connected to a water source for selectively transferring heat between the heat pump and the water source, a well as a secondary water source connected to the water heat exchanger.

Yovanofski, T.

1986-12-16T23:59:59.000Z

130

Modeling the coupled effects of heat transfer. thermochemistry, and kinetics during biomass torrefaction  

E-Print Network (OSTI)

Torrefaction is a thermal pretreatment process which improves the energy density, storage, grinding, and handling characteristics of raw biomass. Research efforts to date have focused on empirical measurements of the fuel ...

Bates, Richard Burton

2012-01-01T23:59:59.000Z

131

A network design model for biomass to energy supply chains with anaerobic digestion systems  

Science Journals Connector (OSTI)

Abstract Development and implementation of renewable energy systems, as a part of the solution to the worldwide increasing energy consumption, have been considered as emerging areas to offer an alternative to the traditional energy systems with limited fossil fuel resources and to challenge environmental problems caused by them. Biomass is one of the alternative energy resources and agricultural, animal and industrial organic wastes can be treated as biomass feedstock in biomass to energy conversion systems. This study aims to develop an effective supply chain network design model for the production of biogas through anaerobic digestion of biomass. In this regard, a mixed integer linear programming model is developed to determine the most appropriate locations for the biogas plants and biomass storages. Besides the strategic decisions such as determining the numbers, capacities and locations of biogas plants and biomass storages, the biomass supply and product distribution decisions can also be made by this model. Mainly, waste biomass is considered as feedstock to be digested in anaerobic digestion facilities. To explore the viability of the proposed model, computational experiments are performed on a real-world problem. Additionally, a sensitivity analysis is performed to account for the uncertainties in the input data to the decision problem.

?ebnem Y?lmaz Balaman; Hasan Selim

2014-01-01T23:59:59.000Z

132

Sundstrand waste heat recovery system  

SciTech Connect

The two programs discussed in this report deal with the use of organic Rankine cycle systems as a means of producing electrical or mechanical power from energy in industrial processes' exhaust. Both programs deal with the design, development, demonstration, and economic evaluation of a 600kWe organic Rankine cycle system designed to recover energy from the exhaust of industrial processes with exhaust gas temperatures of 600/sup 0/F or above. The work done has, through the successful operation of the units installed, demonstrated the technical feasibility of utilizing an organic Rankine cycle bottoming system as a means of conserving energy through waste heat utilization. Continued operation at several sites has also demonstrated the soundness of the design, overall system reliability, and low operating cost. In addition, the basis under which this technology is economically viable in industrial applications was established. As a result of market studies and experience gained from the application of the units addressed in this report, it is concluded that there is a significant market for the equipment at the installed cost level of $1200/kWe to $1500/kWe and that this goal is achievable in the proper manufacturing environment. 54 figs., 2 tabs.

Not Available

1984-03-01T23:59:59.000Z

133

MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE  

E-Print Network (OSTI)

time constant algal heat of combustion (6 Kcal/gm) dilutionSource: temperature, heat of combustion, and the depth at

Haven, Kendall F.

2011-01-01T23:59:59.000Z

134

JV Task 46 - Development and Testing of a Thermally Integrated SOFC-Gasification System for Biomass Power Generation  

SciTech Connect

The Energy & Environmental Research Center has designed a biomass power system using a solid oxide fuel cell (SOFC) thermally integrated with a downdraft gasifier. In this system, the high-temperature effluent from the SOFC enables the operation of a substoichiometric air downdraft gasifier at an elevated temperature (1000 C). At this temperature, moisture in the biomass acts as an essential carbon-gasifying medium, reducing the equivalence ratio at which the gasifier can operate with complete carbon conversion. Calculations show gross conversion efficiencies up to 45% (higher heating value) for biomass moisture levels up to 40% (wt basis). Experimental work on a bench-scale gasifier demonstrated increased tar cracking within the gasifier and increased energy density of the resultant syngas. A series of experiments on wood chips demonstrated tar output in the range of 9.9 and 234 mg/m{sup 3}. Both button cells and a 100-watt stack was tested on syngas from the gasifier. Both achieved steady-state operation with a 22% and 15% drop in performance, respectively, relative to pure hydrogen. In addition, tar tolerance testing on button cells demonstrated an upper limit of tar tolerance of approximately 1%, well above the tar output of the gasifier. The predicted system efficiency was revised down to 33% gross and 27% net system efficiency because of the results of the gasifier and fuel cell experiments. These results demonstrate the feasibility and benefits of thermally integrating a gasifier and a high-temperature fuel cell in small distributed power systems.

Phillip Hutton; Nikhil Patel; Kyle Martin; Devinder Singh

2008-02-01T23:59:59.000Z

135

DOE Hydrogen Analysis Repository: Biomass Integrated Gasification  

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

Biomass Integrated Gasification Combined-Cycle Power Systems Biomass Integrated Gasification Combined-Cycle Power Systems Project Summary Full Title: Cost and Performance Analysis of Biomass-Based Integrated Gasification Combined-Cycle (BIGCC) Power Systems Project ID: 106 Principal Investigator: Margaret Mann Brief Description: This project examines the cost and performance potential of three biomass-based integrated gasification combined cycle (IGCC) systems--high-pressure air blown, low-pressure air blown, and low-pressure indirectly heated. Purpose Examine the cost and performance potential of three biomass-based integrated gasification combined cycle (IGCC) systems - a high pressure air-blown, a low pressure indirectly heated, and a low pressure air-blown. Performer Principal Investigator: Margaret Mann

136

Waste Heat Recapture from Supermarket Refrigeration Systems  

SciTech Connect

The objective of this project was to determine the potential energy savings associated with improved utilization of waste heat from supermarket refrigeration systems. Existing and advanced strategies for waste heat recovery in supermarkets were analyzed, including options from advanced sources such as combined heat and power (CHP), micro-turbines and fuel cells.

Fricke, Brian A [ORNL

2011-11-01T23:59:59.000Z

137

BSU GHP District Heating and Cooling System (Phase I) | Department...  

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

BSU GHP District Heating and Cooling System (Phase I) BSU GHP District Heating and Cooling System (Phase I) Project objectives: Create a campus geothermal heating and cooling...

138

Modeling, Estimation, and Control of Waste Heat Recovery Systems  

E-Print Network (OSTI)

organic Rankine cycle waste heat power conversion system. ”Cycle (ORC) System for Waste Heat Recovery. ” Journal ofRankine Cycles in Waste Heat Uti- lizing Processes. ”

Luong, David

2013-01-01T23:59:59.000Z

139

Application of bio-oils from lignocellulosic biomass to transportation, heat and power generation—A review  

Science Journals Connector (OSTI)

Abstract This review will be concentrated on the application of bio-oil produced from the cellulosic biomass among the various liquid biofuels to transport fuels, heat and power generation as substitute. Main application of bio-oil and biocrude from two main thermochemical processes, i.e., pyrolysis and liquefaction include boiler for heat and electricity production, diesel engine or gas turbine for power generation, and diesel engine for transportation fuel. Fast pyrolysis is the most popular process for converting cellulosic biomass to high yield of bio-oil with relatively low cost. For the application of bio-oils to transportation, heat and power generation, physical upgrading methods such as emulsions (bio-oil/diesel or bio-oil/biodiesel ) and blends of bio-oil/oxygenated fuel (ethanol, diglyme) were mainly used and tested. The studies on the spray characteristics of emulsions and blends in diesel engine condition are not available in the literature. In most studies on the combustion and emission characteristics of emulsions and blends, CO emission was increased in most fuels and engines tested and HC was increased or comparable to diesel operation. However, \\{NOx\\} and soot emissions were decreased in most case of experiments. In the pressure-swirl nozzle for gas turbine application, preheating and blending techniques were employed to reduce the SMD of spray. In case of blend for the application of heat and power generation, E20 blend was mainly selected in most studies. Most studies related to bio-oil combustion in burners, diesel engines and gas turbines demonstrated the higher HC, CO and soot emissions than the original design fuel. Although the properties of bio-oil/methanol blend were widely investigated, there are no studies available about the application of bio-oil/methanol blend to transportation, heat and power generation in the literature. In addition, more research is required for the combustion of upgraded bio-oils for transportation application.

Soo-Young No

2014-01-01T23:59:59.000Z

140

Active Solar Heating and Cooling Systems Exemption  

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

Active solar heating and cooling systems may not be assessed at more than the value of a conventional system for property tax purposes. This law applies only to active solar systems and does not...

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


141

Biomass pyrolysis processes: performance parameters and their influence on biochar system benefits   

E-Print Network (OSTI)

This study focuses on performance of biomass pyrolysis processes for use in biochar systems. Objectives are to understand the range of control of such processes and how this affects potential benefits of pyrolysis biochar ...

Brownsort, Peter A

2009-01-01T23:59:59.000Z

142

The best use of biomass? Greenhouse gas lifecycle analysis of predicted pyrolysis biochar systems   

E-Print Network (OSTI)

to pessimistic scenarios are used for system operation. Slow pyrolysis is compared to fast pyrolysis and biomass co-firing for GHG abatement and electricity production, using various scenarios for availability of indigenous Scottish feedstocks....

Hammond, James A R

2009-01-01T23:59:59.000Z

143

Training: Process Heating Systems | Department of Energy  

Office of Environmental Management (EM)

Process Heating System Assessment - 1-day workshop Availability: Onsite instructor-led and online self-paced workshop This workshop provides an introduction to process...

144

Industrial Steam System Heat-Transfer Solutions  

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

This brief provides an overview of considerations for selecting the best heat-transfer equipment for various steam systems and applications.

145

Heat transfer analysis in Stirling engine heat input system  

SciTech Connect

One of the major factor in commercialization of Stirling engine is mass productivity, and the heat input system including tubular heater is one of the obstacles to mass production because of its complexity in shape and difficulty in manufacturing, which resulted from using oxidation-resistant, low-creep alloys which are not easy to machine and weld. Therefore a heater heat exchanger which is very simple in shape and easy to make has been devised, and a burner system appropriate to this heater also has been developed. In this paper specially devised heat input system which includes a heater shell shaped like U-cup and a flame tube located in the heater shell is analyzed in point of heat transfer processes to find optimum heat transfer. To enhance the heat transfer from the flame tube to the heater shell wall, it is required that the flame tube diameter be enlarged as close to the heater shell diameter as possible, and the flame tube temperature be raised as high as possible. But the enlargement of the flame tube diameter should be restricted by the state of combustion affected by hydraulic resistance of combustion gas, and the boost of the flame tube temperature should be considered carefully in the aspects of the flame tube`s service life.

Chung, W.; Kim, S. [LG Electronics Inc., Seoul (Korea, Republic of). Living System Lab.

1995-12-31T23:59:59.000Z

146

Waste Heat Management Options for Improving Industrial Process Heating Systems  

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

This presentation covers typical sources of waste heat from process heating equipment, characteristics of waste heat streams, and options for recovery including Combined Heat and Power.

147

ENERGY ABSORBER HEAT PUMP SYSTEM TO SUPPLEMENT HEAT RECOVERY SYSTEMS IN AN INDOOR SWIMMING POOL  

Science Journals Connector (OSTI)

ABSTRACT Compared with convontional indoor swimming pools with traditional plant engineering, the Schwalmtal indoor swimming pool has a final energy consumption of just 40%. This low consumption is achieved by improved insulation of the building's enveloping surface, through the operation of systems for the recovery of heat from drain water and waste air as well as by the operation of a heat pump system to gain ambient heat. The decentralised heat recovery systems met between 40 and 80% of the heat requirements in the supply areas where they were used. The electric heat pump system, which is operated in the bivalent mode in parallel to a heating boiler, could generate 75% of the heat provided by the central heating circuit to meet the residual heat requirements. The report illustrates the structure of the residual heat requirements of the central heating circuit. A description is given of the measured coefficients of performance of the brine/water heat pump connected by a brine circuit with two different energy absorber types - energy stack and energy roof. Finally, the ambient energy gained with the absorbers is broken down into the various kinds of heat gains from radiation, convection, condensation etc. KEYWORDS Energy absorber; energy stack; energy roof; heat pump; heat recovery systems; indoor swimming pool; energy engineering concept.

K. Leisen

1988-01-01T23:59:59.000Z

148

Heat exchanger with auxiliary cooling system  

DOE Patents (OSTI)

A heat exchanger with an auxiliary cooling system capable of cooling a nuclear reactor should the normal cooling mechanism become inoperable. A cooling coil is disposed around vertical heat transfer tubes that carry secondary coolant therethrough and is located in a downward flow of primary coolant that passes in heat transfer relationship with both the cooling coil and the vertical heat transfer tubes. A third coolant is pumped through the cooling coil which absorbs heat from the primary coolant which increases the downward flow of the primary coolant thereby increasing the natural circulation of the primary coolant through the nuclear reactor.

Coleman, John H. (Salem Township, Westmoreland County, PA)

1980-01-01T23:59:59.000Z

149

Buffalo district heating system design and construction  

SciTech Connect

This report addresses the introduction of district heating in Buffalo, NY from feasibility study to implementation. The reemergence of district heating in the US and associated advantages are reviewed. Advanced piping technology which has enabled district heating to compete economically with alternative technologies is summarized. Identification and analysis of the customer heat load considered in downtown Buffalo for the pilot system and future expansion is discussed. Various options for initiating construction of a district heating system were considered as exemplified by the configuration for the pilot system which was selected to serve five downtown buildings. A conceptual plan is presented which permits the system to expand in an economically viable manner. The report concludes with an economic analysis which simulates the operation and expansion of the system. 4 figs., 8 tabs.

Oliker, I.

1987-11-01T23:59:59.000Z

150

NETL: Coal and Coal/Biomass to Liquids - Systems and Industry Analyses  

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

C&CBTL > Systems Analyses C&CBTL > Systems Analyses Coal and Coal/Biomass to Liquids Reference Shelf – Systems and Industry Analyses Studies DOE/NETL possesses strong systems analysis and policy-support capabilities. Systems analysis in support of the Coal and Coal/Biomass to Liquids Program consists of conducting various energy analyses that provide input to decisions on issues such as national plans and programs, resource use, environmental and energy security policies, technology options for research and development programs, and paths to deployment of energy technology. Coal and Coal/Biomass to Liquids Program's Systems and Industry Analyses Studies Life Cycle Greenhouse Gas Analysis of Advanced Jet Propulsion Fuels: Fischer-Tropsch Based SPK-1 Case Study - Presentation

151

Estimation of Biomass Heat Storage Using Thermal Infrared Imagery: Application to a Walnut Orchard  

E-Print Network (OSTI)

remote areas and the holes drilled for the in situ tempera- ture sensors may affect the measurement through local changes in heat

Garai, Anirban; Kleissl, Jan; Llewellyn Smith, Stefan G.

2010-01-01T23:59:59.000Z

152

Slovak Centre of Biomass Use for Energy Wood Fired Heating Plant in Slovakia  

E-Print Network (OSTI)

brown-coal fired boilers with low efficiency. The special furnace design ensures that woody biofuel authorities CHP Planning issues Transport companies District Heating Sustainable communities Utilities Solar

153

Heat transport system, method and material  

DOE Patents (OSTI)

A heat transport system, method and composite material are disclosed in which a plurality of hollow spherical shells or microspheres having an outside diameter of less than or equal to 500 microns are encapsulated or embedded within a bulk material. Each shell has captured therein a volatile working fluid, such that each shell operates as a microsized heat pipe for conducting heat through the composite structure. 1 fig.

Musinski, D.L.

1987-04-28T23:59:59.000Z

154

Forest Biomass Supply for BioForest Biomass Supply for Bio--productionproduction in the Southeastern United Statesin the Southeastern United States  

E-Print Network (OSTI)

Forest Biomass Supply for BioForest Biomass Supply for BioBio--production and biomass utilizationsproduction and biomass utilizations Industrial sector: for heat and steam Utility sector: for electricity Forest biomass: Agricultural biomass: Transportation sector: for biofuels

Gray, Matthew

155

Exergoeconomic evaluation on the optimum heating circuit system of Simav geothermal district heating system  

Science Journals Connector (OSTI)

Simav is one of the most important 15 geothermal areas in Turkey. It has several geothermal resources with the mass flow rate ranging from 35 to 72 kg/s and temperature from 88 to 148 °C. Hence, these geothermal resources are available to use for several purposes, such as electricity generation, district heating, greenhouse heating, and balneological purposes. In Simav, the 5000 residences are heated by a district heating system in which these geothermal resources are used. Beside this, a greenhouse area of 225,000 m2 is also heated by geothermal. In this study, the working conditions of the Simav geothermal district heating system have been optimized. In this paper, the main characteristics of the system have been presented and the impact of the parameters of heating circuit on the system are investigated by the means of energy, exergy, and life cycle cost (LCC) concepts. As a result, the optimum heating circuit has been determined as 60/49 °C.

Oguz Arslan; M.Arif Ozgur; Ramazan Kose; Abtullah Tugcu

2009-01-01T23:59:59.000Z

156

Modeling of Residential Buildings and Heating Systems  

E-Print Network (OSTI)

-zone building model is used in each case. A model of the heating system is also used for the multi-storey building. Both co-heating and tracer gas measurements are used in order to adjust the parameters of each building model. A complete monitoring...

Masy, G.; Lebrun, J.

2004-01-01T23:59:59.000Z

157

Rankine cycle waste heat recovery system  

DOE Patents (OSTI)

This disclosure relates to a waste heat recovery (WHR) system and to a system and method for regulation of a fluid inventory in a condenser and a receiver of a Rankine cycle WHR system. Such regulation includes the ability to regulate the pressure in a WHR system to control cavitation and energy conversion.

Ernst, Timothy C.; Nelson, Christopher R.

2014-08-12T23:59:59.000Z

158

In situ heat treatment process utilizing a closed loop heating system  

DOE Patents (OSTI)

Systems and methods for an in situ heat treatment process that utilizes a circulation system to heat one or more treatment areas are described herein. The circulation system may use a heated liquid heat transfer fluid that passes through piping in the formation to transfer heat to the formation. In some embodiments, the piping may be positioned in at least two of the wellbores.

Vinegar, Harold J. (Bellaire, TX); Nguyen, Scott Vinh (Houston, TX)

2010-12-07T23:59:59.000Z

159

Multifamily Individual Heating and Ventilation Systems, Lawrence...  

Energy Savers (EERE)

each apartment were much higher than the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) 62.2 rate; an extensive system of ductwork, smoke and...

160

Wood-Burning Heating System Deduction  

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

This statute allows individual taxpayers a deduction for the purchase and installation of a wood-burning heating system. The deduction is equal to the total cost of purchase and installation for...

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


161

Low-Cost Packaged Combined Heat and Power System | Department...  

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

Low-Cost Packaged Combined Heat and Power System Low-Cost Packaged Combined Heat and Power System Introduction Many combined heat and power (CHP) systems less than 1 megawatt (MW)...

162

Heat Transfer Fluids for Solar Water Heating Systems | Department of Energy  

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

Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems May 16, 2013 - 3:02pm Addthis Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria: Coefficient of expansion - the fractional change in length (or sometimes in volume, when specified) of a material for a unit change in temperature Viscosity - resistance of a liquid to sheer forces (and hence to flow) Thermal capacity - the ability of matter to store heat Freezing point - the temperature below which a liquid turns into a

163

Pilot design of biomass energy resources inquiry system based on MapX: a case of Liyang city in China  

Science Journals Connector (OSTI)

With the rapid development of large- and medium-scale biomass energy utilisation in Jiangsu Province of China, to explore the potential of biomass energy resources availability becomes increasingly necessary. This paper analyses the biomass energy resources within Liyang City of Changzhou and designs a referral information system based on MapX software provided by Mapinfo GIS platform. The system is secondarily developed according to practical demand and achieves many functions of professional GIS software such as amplification, dwindling, scale enquiry, point enquiry, thememap and so on. The enquiry system will provide valuable reference to energy and environmental policies or relevant biomass energy enterprises.

Peibing Yan; Weiming Wu; Xiaohua Wang

2008-01-01T23:59:59.000Z

164

Reduce Natural Gas Use in Your Industrial Process Heating Systems...  

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

Natural Gas Use in Your Industrial Process Heating Systems Reduce Natural Gas Use in Your Industrial Process Heating Systems This fact sheet describes ten effective ways to save...

165

Improving Process Heating System Performance: A Sourcebook for...  

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

Process Heating System Performance: A Sourcebook for Industry, Second Edition Improving Process Heating System Performance: A Sourcebook for Industry, Second Edition This...

166

Flathead Electric Cooperative Facility Geothermal Heat Pump System...  

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

Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Project Will Take Advantage of...

167

Ground heat exchanger design for direct geothermal energy systems .  

E-Print Network (OSTI)

??Direct geothermal energy systems use the ground to heat and cool buildings. Ground-source heat pump (GSHP) systems are the most widespread form of direct geothermal… (more)

COLLS, STUART

2013-01-01T23:59:59.000Z

168

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle. 18 figs.

Jardine, D.M.

1983-03-22T23:59:59.000Z

169

Install Waste Heat Recovery Systems for Fuel-Fired Furnaces  

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

This tip sheet recommends installing waste heat recovery systems for fuel-fired furnaces to increase the energy efficiency of process heating systems.

170

Fuel-Flexible Microturbine and Gasifier System for Combined Heat...  

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

Flexible Microturbine and Gasifier System for Combined Heat and Power Fuel-Flexible Microturbine and Gasifier System for Combined Heat and Power Capstone Turbine Corporation, in...

171

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact...  

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

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 FuelCell Energy, Inc., in...

172

Development of an Advanced Combined Heat and Power (CHP) System...  

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

an Advanced Combined Heat and Power (CHP) System Utilizing Off-Gas from Coke Calcination - Fact Sheet, 2011 Development of an Advanced Combined Heat and Power (CHP) System...

173

Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentati...  

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

Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentation by FuelCell Energy, June 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentation by...

174

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle.

Jardine, Douglas M. (Colorado Springs, CO)

1983-01-01T23:59:59.000Z

175

Synthesis of Biomass-based Trigeneration Systems with Uncertainties  

Science Journals Connector (OSTI)

In Case 1, an anaerobic digester is selected to convert POME into biogas, followed by membrane separation units to purify the biogas to produce biomethane. ... Gas turbines are selected to utilize biomethane to produce additional power and a heat recovery steam generator (HRSG) to generate steam. ...

Viknesh Andiappan; Denny K. S. Ng; Santanu Bandyopadhyay

2014-10-16T23:59:59.000Z

176

Dynamics of heat transfer between nano systems  

E-Print Network (OSTI)

We develop a dynamical theory of heat transfer between two nano systems. In particular, we consider the resonant heat transfer between two nanoparticles due to the coupling of localized surface modes having a finite spectral width. We model the coupled nanosystem by two coupled quantum mechanical oscillators, each interacting with its own heat bath, and obtain a master equation for the dynamics of heat transfer. The damping rates in the master equation are related to the lifetimes of localized plasmons in the nanoparticles. We study the dynamics towards the steady state and establish connection with the standard theory of heat transfer in steady state. For strongly coupled nano particles we predict Rabi oscillations in the mean occupation number of surface plasmons in each nano particle.

Svend-Age Biehs; Girish S. Agarwal

2012-10-18T23:59:59.000Z

177

GUIDELINES FOR CERTIFICATION OF COMBINED HEAT AND POWER SYSTEMS  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION GUIDELINES FOR CERTIFICATION OF COMBINED HEAT AND POWER SYSTEMS for Certification of Combined Heat and Power Systems Pursuant to the Waste Heat and Carbon Emissions Reduction Act Heat and Power System Pursuant to the Waste Heat and Carbon Emissions Reduction Act, Public Utilities

178

A systemic approach for dimensioning and designing anaerobic bio-digestion/energy generation biomass supply networks  

Science Journals Connector (OSTI)

Abstract Anaerobic bio-digestion/energy generation complexes using animal waste raw materials represent an important component of renewable energy initiatives and policies worldwide, and are significant contributors to broaden sustainability efforts. In such projects bio-power feasibility depends heavily on generation complex access to biomass which is of costly transportation. As a result, an important component of renewable energy planning is the optimization of a logistics system to guarantee low-cost access to animal waste. This access is a function of local characteristics including number and geographic location of organic waste sources, operating and maintenance costs of the generation facility, energy prices, and marginal contribution of biomass collected and delivered to the anaerobic bio-digestion unit. Because biomass exhibits high transportation costs per unit of energy ultimately generated, and because different types of biomass have different biogas-generating properties, design of the supply logistics system can be the determinant factor towards economic viability of energy generation from an anaerobic bio-digestion plant. Indeed, to address this problem it is helpful to consider the farms, the logistics system, the anaerobic bio-digestion plant, and the generation plant as subsystems in an integrated system. Additionally, the existence of an outlet for manure may allow farmers to significantly raise boundaries of one constraint they face, namely disposing of animal waste, therefore permitting increases in farm production capacity. This paper suggests and outlines a systematic methodology to address the design of such systems.

João Neiva de Figueiredo; Sérgio Fernando Mayerle

2014-01-01T23:59:59.000Z

179

Control system for fluid heated steam generator  

DOE Patents (OSTI)

A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

Boland, J.F.; Koenig, J.F.

1984-05-29T23:59:59.000Z

180

Optimal Control Strategy of Solar Heating Systems Using a Long Term Heat Storage  

Science Journals Connector (OSTI)

...the estimation of the energy gain expected from optimizing the control of a given gas/solar heating system using a long term heat storage in the ground.

M. Boucher; M. Pottier; Y. Lenoir; R. Lidin…

1984-01-01T23:59:59.000Z

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


181

BIOMASS ACTION PLAN FOR SCOTLAND  

E-Print Network (OSTI)

BIOMASS ACTION PLAN FOR SCOTLAND #12; #12;© Crown copyright 2007 ISBN: 978 0 7559 6506 9 Scottish% recyclable. #12;A BIOMASS ACTION PLAN FOR SCOTLAND #12;#12;1 CONTENTS FOREWORD 3 1. EXECUTIVE SUMMARY 5 2. INTRODUCTION 9 3. WIDER CONTEXT 13 4. SCOTLAND'S ROLE IN THE UK BIOMASS STRATEGY 17 5. BIOMASS HEATING 23 6

182

Systems Level Regulation of Rhythmic Growth Rate and Biomass Accumulation in Grasses  

SciTech Connect

Several breakthroughs have been recently made in our understanding of plant growth and biomass accumulation. It was found that plant growth is rhythmically controlled throughout the day by the circadian clock through a complex interplay of light and phytohormone signaling pathways. While plants such as the C4 energy crop sorghum (Sorghum bicolor (L.) Moench) and possibly the C3 grass (Brachypodium distachyon) also exhibit daily rhythms in growth rate, the molecular details of its regulation remain to be explored. A better understanding of diurnally regulated growth behavior in grasses may lead to species-specific mechanisms highly relevant to future strategies to optimize energy crop biomass yield. Here we propose to devise a systems approach to identify, in parallel, regulatory hubs associated with rhythmic growth in C3 and C4 plants. We propose to use rhythmicity in daily growth patterns to drive the discovery of regulatory network modules controlling biomass accumulation.

Kay, Steve A. [University of California San Diego

2013-05-02T23:59:59.000Z

183

Effect of storage time on the flowability of biomass-coal granular system  

Science Journals Connector (OSTI)

Abstract The influence of storage time on the flowability of biomass-coal blends is experimental and theoretical investigated. The results show that there exists exponential relationship between discharge rate and storage time in an appropriate rice straw mass fraction range (less than 10%). In addition, the mechanism of gravity discharge rate variation for biomass-coal blends is theoretically investigated by analyzing the porosity variation of particle bed. The mechanism of porosity variation in the binary granular system is theoretically analyzed on the basis of emergent gas, mutual compression and particle rearrangement, and a mathematical model has been developed which agrees well with the experimental results. Furthermore, relaxation effect is proposed, which is mainly induced by elasticity of rice straw particle and cohesion of blends. Relaxation time is the most important parameters determining this effect. The latter decreases with increasing of coal particle size and biomass mass fraction.

Zhiguo Guo; Xueli Chen; Haifeng Liu; Haifeng Lu; Xiaolei Guo; Xin Gong

2014-01-01T23:59:59.000Z

184

The effect of drying on the heating value of biomass fuels  

E-Print Network (OSTI)

DF HEAT TRANsFER. with coal and coke as the fuels in mind. The guidelines for drying given by the EPA (Test Methods 160. 2 and 160. 3) are mainly for the liquid portion of the wastewater and explicitly excludes "non-representative particulates... most engineering applications are based. The documents of interest are: D3173-87, "Standard Test Method for Moisture in the Analysis Sample of Coal and Coke"; D2015- 93, "Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic...

Rodriguez, Pablo Gregorio

2012-06-07T23:59:59.000Z

185

Biomass-Derived Hydrogen from a Thermally Ballasted Gasifier  

E-Print Network (OSTI)

Biomass-Derived Hydrogen from a Thermally Ballasted Gasifier DOE Hydrogen Program Contractors biomass #12;Approach Outline Gasifier Pilot Plant· Develop subsystems for the hydrogen production system and pyrolysis occur simultaneously in a single reactor · Exothermic combustion provides heat · Endothermic

186

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect

The Energy & Environmental Research Center (EERC) is conducting a project to examine the fundamental issues limiting the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC is attempting to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low-volatile fuels with lower reactivities can experience damaging fouling when switched to higher-volatile and more reactive lower-rank fuels, such as when cofiring biomass. Higher heat release rates at the grate can cause more clinkering or slagging at the grate because of higher temperatures. Combustion and loss of volatile matter can start too early with biomass fuels compared to design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the boiler, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates and various chlorides in combination with different flue gas temperatures because of changes in fuel heating value, which can adversely affect ash deposition behavior.

Jay R. Gunderson; Bruce C. Folkedahl; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2002-05-01T23:59:59.000Z

187

SYSTEM PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP  

E-Print Network (OSTI)

AUG 1979 SYSTEM PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP W. D. Richards W The development of the first prototype heat activated heat pump (HAHP) jointly sponsored by the Gas Research as a unitary heating and cooling product competing for the same market as is currently served by the gas year

Oak Ridge National Laboratory

188

Liquid Fuel Production from Biomass via High Temperature Steam Electrolysis  

SciTech Connect

A process model of syngas production using high temperature electrolysis and biomass gasification is presented. Process heat from the biomass gasifier is used to heat steam for the hydrogen production via the high temperature steam electrolysis process. Hydrogen from electrolysis allows a high utilization of the biomass carbon for syngas production. Oxygen produced form the electrolysis process is used to control the oxidation rate in the oxygen-fed biomass gasifier. Based on the gasifier temperature, 94% to 95% of the carbon in the biomass becomes carbon monoxide in the syngas (carbon monoxide and hydrogen). Assuming the thermal efficiency of the power cycle for electricity generation is 50%, (as expected from GEN IV nuclear reactors), the syngas production efficiency ranges from 70% to 73% as the gasifier temperature decreases from 1900 K to 1500 K. Parametric studies of system pressure, biomass moisture content and low temperature alkaline electrolysis are also presented.

Grant L. Hawkes; Michael G. McKellar

2009-11-01T23:59:59.000Z

189

Cedarville School District Retrofit of Heating and Cooling Systems...  

Open Energy Info (EERE)

Last modified on July 22, 2011. Project Title Cedarville School District Retrofit of Heating and Cooling Systems with Geothermal Heat Pumps and Ground Source Water Loops Project...

190

Dual Loop Parallel/Series Waste Heat Recovery System  

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

This system captures all the jacket water, intercooler, and exhaust heat from the engine by utilizing a single condenser to reject leftover heat to the atmosphere.

191

Joule heating and heat transfer in poly(dimethylsiloxane) microfluidic systems  

E-Print Network (OSTI)

Joule heating and heat transfer in poly(dimethylsiloxane) microfluidic systems David Erickson microfluidic/biochip systems must have the ability to rapidly reject this heat to the surroundings. Generally it is the ability to dissipate this heat that limits the strength of the applied electric field and thus the maximum

Erickson, David

192

Field Measurements of Heating System Efficiency in Nine Electrically-Heated Manufactured Homes.  

SciTech Connect

This report presents the results of field measurements of heating efficiency performed on nine manufactured homes sited in the Pacific Northwest. The testing procedure collects real-time data on heating system energy use and heating zone temperatures, allowing direct calculation of heating system efficiency.

Davis, Bob; Siegel, J.; Palmiter, L.; Baylon, D.

1996-07-01T23:59:59.000Z

193

Life cycle assessment of energy crop production with special attention to the establishment of regional biomass utilisation systems  

Science Journals Connector (OSTI)

We conducted a life cycle assessment of energy crop production for bioethanol to clarify the potentialities of biomass utilisation systems in Japan, focusing on cumulative fossil energy demand and global warming potential. Their reductions were evaluated under two scenarios; one was improving cultivation technologies and breeding of new crop varieties, and the other was setting up of regional biomass utilisation systems, in which biomass resources from various industries were utilised mutually and effectively. It was proved that the improvement in cultivation technologies and the establishment of regional biomass utilisation systems have large potential for saving fossil fuel resources and reducing greenhouse gas emissions. Although these results largely depend on scenarios including the lifetime and coverage area of agricultural machinery, and types of biomass utilisation, it was concluded that substitution of petrol by bioethanol converted from these energy crops has considerable potential for rendering our society more sustainable.

Susumu Uchida; Kiyotada Hayashi; Mitsuru Gau; Tsutomu Kajiyama; Shigekiyo Shirasawa; Hiroyuki Takahashi; Yoshifumi Terajima; Makoto Matsuoka; Masaru Yoshinaga

2012-01-01T23:59:59.000Z

194

MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE  

E-Print Network (OSTI)

flow from an on-site steam turbine to raise the kelp to 45°Ca 1200 Kw electric steam turbine/generator system. CapitalFinally, the waste steam stream from the turbine is used to

Haven, Kendall F.

2011-01-01T23:59:59.000Z

195

DOE/EA-1605: Finding of No Significant Impact for the Environmental Assessment for Biomass Cogeneration and Heating Facilities at the Savannah River Site (August 2008)  

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

Biomass Cogeneration and Heating Facilities at the Savannah River Site Agency: U.S. Department of Energy Action: Finding of No Significant Impact Summary: The Department of Energy (DOE) has prepared an environmental assessment (EA) (DOE/EA-1605) to analyze the potential environmental impacts of the proposed construction and operation of new biomass cogeneration and heating facilities located at the Savannah River Site (SRS). The draft EA was made available to the States of South Carolina and Georgia, and to the public, for a 30-day comment period. Based on the analyses in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the

196

Application Study of a Single House Horizontal Heating System  

E-Print Network (OSTI)

It is imperative to get new heating systems into the market and implement rate structures with heat meters for the purpose of energy conservation and environmental protection. Based on analysis of current heating technology, this paper analyzes...

Hang, Y.; Ying, D.

2006-01-01T23:59:59.000Z

197

Fuels from Biomass: Integration with Food and Materials Systems  

Science Journals Connector (OSTI)

...W-7405-ENG-92. using each ofthese solar energy systems. In photosynthesis...with the Gov-ernment of Tanzania last August on the potential of solar energy for the villages of...con-ducted a workshop in Tanzania on solar energy. Dr. Brown is an...

E. S. Lipinsky

1978-02-10T23:59:59.000Z

198

A Life Cycle Analysis on a Bio-DME production system considering the species of biomass feedstock in Japan and Papua New Guinea  

Science Journals Connector (OSTI)

This paper describes the performance and/or CO2 intensities of a Bio-DME (Biomass Di-methyl Ether) production system, considering the differences of biomass feedstock. In the past LCA studies on an energy chain model, there is little knowledge on the differences of biomass feedstock and/or available condition. Thus, in this paper, we selected Papua New Guinea (PNG) which has good potential for supply of an energy crop (a short rotation forestry), and Japan where wood remnants are available, as model areas. Also, we referred to 9 species of biomass feedstock of PNG, and to 8 species in Japan. The system boundary on our LCA consists of (1) the pre-treatment process, (2) the energy conversion process, and (3) the fuel transportation process. Especially, since the pre-treatment process has uncertainties related to the moisture content of biomass feedstock, as well as the distance from the cultivation site to the energy plant, we considered them by the Monte Carlo simulation. Next, we executed the process design of the Bio-DME production system based on the basic experimental results of pyrolysis and char gasification reactions. Due to these experiments, the gas components of pyrolysis and the gasification rate under H2O (steam) and CO2 were obtained. Also, we designed the pressurized fluid-bed gasification process. In a liquefaction process, that is, a synthesis process of DME, the result based on an equilibrium constant was used. In the proposed system, a steam turbine for an auxiliary power was assumed to be equipped, too. The energy efficiencies are 39.0–56.8 LHV-%, depending upon the biomass species. Consequently, CO2 intensities in the whole system were 16.3–47.2 g-CO2/MJ-DME in the Japan case, and 12.2–36.7 g-CO2/MJ-DME in the PNG one, respectively. Finally, using the results of CO2 intensities and energy efficiencies, we obtained the regression equations as parameters of hydrogen content and heating value of a feedstock. These equations will be extremely significant when we install the BTL (biomass-to-liquid, ex. Bio-DME) energy system in the near future, in order to mitigate CO2 emissions effectively, and to estimate the energy’s efficiency.

Masashi Higo; Kiyoshi Dowaki

2010-01-01T23:59:59.000Z

199

Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate-Fired Boiler  

E-Print Network (OSTI)

Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate, the noncontinuous biomass feeding and grate movement, the combustion instabilities inside the fuel bed used to fire biomass for heat and power production. However, grate-firing systems are often reported

Rosendahl, Lasse

200

Experimental study of a photovoltaic solar-assisted heat-pump/heat-pipe system  

Science Journals Connector (OSTI)

A practical design for a heat pump with heat-pipe photovoltaic/thermal (PV/T) collectors is presented. The hybrid system is called the photovoltaic solar-assisted heat-pump/heat-pipe (PV-SAHP/HP) system. To focus on both actual demand and energy savings, the PV-SAHP/HP system was designed to be capable of operating in three different modes, namely, the heat-pipe, solar-assisted heat pump, and air-source heat-pump modes. Based on solar radiation, the system operates in an optimal mode. A series of experiments were conducted in Hong Kong to study the performance of the system when operating in the heat-pipe and the solar-assisted heat-pump modes. Moreover, energy and exergy analyses were used to investigate the total PV/T performance of the system.

H.D. Fu; G. Pei; J. Ji; H. Long; T. Zhang; T.T. Chow

2012-01-01T23:59:59.000Z

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


201

Heat flux dynamics in dissipative cascaded systems  

E-Print Network (OSTI)

We study the dynamics of heat flux in the thermalization process of a pair of identical quantum system that interact dissipatively with a reservoir in a {\\it cascaded} fashion. Despite the open dynamics of the bipartite system S is globally Lindbladian, one of the subsystems "sees" the reservoir in a state modified by the interaction with the other subsystem and hence it undergoes a non-Markovian dynamics. As a consequence, the heat flow exhibits a non-exponential time behaviour which can greatly deviate from the case where each party is independently coupled to the reservoir. We investigate both thermal and correlated initial states of $S$ and show that the presence of correlations at the beginning can considerably affect the heat flux rate. We carry out our study in two paradigmatic cases -- a pair of harmonic oscillators with a reservoir of bosonic modes and two qubits with a reservoir of fermionic modes -- and compare the corresponding behaviours. In the case of qubits and for initial thermal states, we find that the trace distance discord is at any time interpretable as the correlated contribution to the total heat flux.

Salvatore Lorenzo; Alessandro Farace; Francesco Ciccarello; G. Massimo Palma; Vittorio Giovannetti

2014-12-19T23:59:59.000Z

202

Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems  

E-Print Network (OSTI)

as other types of air source heat pumps, VRF systems needconventional packaged air source heat pumps. Typical GSHPis basically an air source heat pump), especially when the

Hong, Tainzhen

2010-01-01T23:59:59.000Z

203

Heat exchanger optimization for geothermal district heating systems: A fuel saving approach  

Science Journals Connector (OSTI)

One of the most commonly used heating devices in geothermal systems is the heat exchanger. The output conditions of heat exchangers are based on several parameters. The heat transfer area is one of the most important parameters for heat exchangers in terms of economics. Although there are a lot of methods to optimize heat exchangers, the method described here is a fairly easy approach. In this paper, a counter flow heat exchanger of geothermal district heating system is considered and optimum design values, which provide maximum annual net profit, for the considered heating system are found according to fuel savings. Performance of the heat exchanger is also calculated. In the analysis, since some values are affected by local conditions, Turkey's conditions are considered.

Ahmet Dagdas

2007-01-01T23:59:59.000Z

204

Solar collector for fluid heating system  

SciTech Connect

A solar collector for use in either an upfeed forced hot water heating system or a downfeed system features a pair of serpentine coils arranged in opposing flow relationship within a shallow insulated collector housing having a sealed glass closure panel. The two serpentine coils lie in spaced parallel planes within the housing, and the two coils are offset laterally so that their individual longitudinal loops overlap laterally by approximately one-half the width of each loop. The flow of heated fluid in each serpentine coil is controlled independently of the other coil by a temperature-responsive modulating valve connected in each coil close to the outlet end thereof within the housing. Efficiency of operation and practicality and economy of construction are featured.

Wilson, D.C.

1980-09-30T23:59:59.000Z

205

Ground Source Heat Pump System Data Analysis  

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

Peer Review Peer Review GSHP System Data Analysis Xiaobing Liu, Ph.D. Oak Ridge National Laboratory liux2@ornl.gov (865-574-2593) 4/3/2013 - GSHP Data Analysis in 1 st phase of U.S.-China CERC-BEE - GSHP ARRA Grantee Data Mining 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: High first cost of ground heat exchangers (GHXs) and lack of knowledge/trust in achievable benefits are major barriers preventing

206

Ground Source Heat Pump System Data Analysis  

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

Peer Review Peer Review GSHP System Data Analysis Xiaobing Liu, Ph.D. Oak Ridge National Laboratory liux2@ornl.gov (865-574-2593) 4/3/2013 - GSHP Data Analysis in 1 st phase of U.S.-China CERC-BEE - GSHP ARRA Grantee Data Mining 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: High first cost of ground heat exchangers (GHXs) and lack of knowledge/trust in achievable benefits are major barriers preventing

207

Building America Webinar: Central Multifamily Water Heating Systems...  

Energy Savers (EERE)

Building America Webinar: Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems January 21, 2015 3:00PM to 4:30PM EST This...

208

Central Multifamily Water Heating Systems | Department of Energy  

Energy Savers (EERE)

Central Multifamily Water Heating Systems Central Multifamily Water Heating Systems January 21, 2015 3:00PM to 4:30PM EST The Building America Program is hosting a no-cost,...

209

Solar Space Heating with Air and Liquid Systems  

Science Journals Connector (OSTI)

...several thousand solar space heating systems...can be supplied by solar energy delivered from flat-plate...liquid collection and storage systems, demand...Annual costs of solar heating equipment...current values of energy savings, but fuel...

1980-01-01T23:59:59.000Z

210

Building America Webinar: Central Multifamily Water Heating Systems...  

Energy Savers (EERE)

Building America Webinar: Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems January 21, 2015 11:00AM to 12:30PM MST...

211

Improving Heating System Operations Using Water Re-Circulation  

E-Print Network (OSTI)

In order to solve the imbalance problem of a heating system, brought about by consumer demand and regulation, and save the electricity energy consumed by a circulation pump, a water mixing and pressure difference control heating system is proposed...

Li, F.; Han, J.

2006-01-01T23:59:59.000Z

212

Everything You Wanted to Know About Solar Water Heating Systems...  

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

Everything You Wanted to Know About Solar Water Heating Systems Everything You Wanted to Know About Solar Water Heating Systems October 7, 2014 - 2:39pm Q&A What do you want to...

213

Case study of underground pipe ground coupled heat pump system  

Science Journals Connector (OSTI)

Aiming to give some advices on the ground coupled heat pump system design in Sichuan Province, China, a typical ground source heat pump (GSHP) system in Sichuan Province was tested in a whole operational year,...

Min Zheng ??; Bai-yi Li ???; Zheng-yong Qiao ???

2012-03-01T23:59:59.000Z

214

Hot Water Heating System Operation and Energy Conservation  

E-Print Network (OSTI)

Based on an example of the reconstruction of a hot water heating system, this paper provides an analysis and comparison of the operations of hot water heating systems, including supply water temperature adjustment, flow adjustment during each...

Shao, Z.; Chen, H.; Wei, P.

2006-01-01T23:59:59.000Z

215

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

SciTech Connect

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

216

Modeling, Estimation, and Control of Waste Heat Recovery Systems  

E-Print Network (OSTI)

141 Open ORC Systemfor Open Organic Rankine Cycle (ORC)138 Evaporatorof an Organic Rankine Cycle (ORC) System for Waste Heat

Luong, David

2013-01-01T23:59:59.000Z

217

[Waste water heat recovery system]. Final report, September 30, 1992  

SciTech Connect

The production capabilities for and field testing of the heat recovery system are described briefly. Drawings are included.

Not Available

1993-04-28T23:59:59.000Z

218

Development of a Computer Heating Monitoring System and Its Applications  

E-Print Network (OSTI)

monitoring system is put into effect in Beijing Institute of Civil Engineering and Architecture (substation heating system) and Beijing Yuxin Residential Area (boiler station heating system). The analysis on testing results is as follows. 3.1 Analysis... Outdoor temp. Time (h) Temp. (?) /Heating load (10 -1 kcal/h) Fig. 2 Changing trends of parameters for substation heating system (Mar. 8, 2000) From Fig. 2 and 3 we can see that the fluctuation of the supply and return water temperatures...

Chen, H.; Li, D.; Shen, L.

2006-01-01T23:59:59.000Z

219

Submersible pumping system with heat transfer mechanism  

DOE Patents (OSTI)

A submersible pumping system for downhole use in extracting fluids containing hydrocarbons from a well. In one embodiment, the pumping system comprises a rotary induction motor, a motor casing, one or more pump stages, and a cooling system. The rotary induction motor rotates a shaft about a longitudinal axis of rotation. The motor casing houses the rotary induction motor such that the rotary induction motor is held in fluid isolation from the fluid being extracted. The pump stages are attached to the shaft outside of the motor casing, and are configured to impart fluid being extracted from the well with an increased pressure. The cooling system is disposed at least partially within the motor casing, and transfers heat generated by operation of the rotary induction motor out of the motor casing.

Hunt, Daniel Francis Alan; Prenger, F. Coyne; Hill, Dallas D; Jankowski, Todd Andrew

2014-04-15T23:59:59.000Z

220

System Modeling of Gas Engine Driven Heat Pump  

SciTech Connect

To improve the system performance of the GHP, modeling and experimental study has been made by using desiccant system in cooling operation (particularly in high humidity operations) and suction line waste heat recovery to augment heating capacity and efficiency. The performance of overall GHP system has been simulated by using ORNL Modulating Heat Pump Design Software, which is used to predict steady-state heating and cooling performance of variable-speed vapor compression air-to-air heat pumps for a wide range of operational variables. The modeling includes: (1) GHP cycle without any performance improvements (suction liquid heat exchange and heat recovery) as a baseline (both in cooling and heating mode), (2) the GHP cycle in cooling mode with desiccant system regenerated by waste heat from engine incorporated, (3) GHP cycle in heating mode with heat recovery (recovered heat from engine). According to the system modeling results, by using desiccant system regenerated by waste heat from engine, the SHR can be lowered to 40%. The waste heat of the gas engine can boost the space heating efficiency by 25% in rated operating conditions.

Mahderekal, Isaac [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Shen, Bo [ORNL] [ORNL; Vineyard, Edward [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

2012-01-01T23:59:59.000Z

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


221

Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System  

E-Print Network (OSTI)

ICEBO2006, Shenzhen, China Renewable Energy Resources and a Greener Future, Vol.VIII-8-1 Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-conditioning System Chunlei Zhang Suilin Wang Hongbing Chen...

Zhang, C.; Wang, S.; Chen, H.; Shi, Y.

2006-01-01T23:59:59.000Z

222

CFD Modeling of Biomass Gasification Using a Circulating Fluidized Bed Reactor.  

E-Print Network (OSTI)

??Biomass, as a renewable energy resource, can be utilized to generate chemicals, heat, and electricity. Compared with biomass combustion, biomass gasification is more eco-friendly because… (more)

Liu, Hui

2014-01-01T23:59:59.000Z

223

Biostirling({trademark}): A small biomass power conversion system using an advanced stirling engine  

SciTech Connect

Over the past decade the need for small power conversion systems to serve rural and/or remote needs has increased dramatically. The requirements for systems <100 kW are very similar, whether the need is defined as {open_quotes}rural electrification{close_quotes} in developed countries, or as {open_quotes}village power{close_quotes} in developing countries. The availability of biomass fuel resources to serve such systems is not in doubt, be they agricultural, forestry, animal or urban wastes. The main inhibiting factor has been the absence of a biomass power conversion system characterized by: reliability, cost effectiveness, low pollution, and ease of maintenance. Stirling Thermal Motors of Ann Arbor, Michigan, is recognized as the leader worldwide in the development and application of Stirling engine technology. It is currently demonstrating a {open_quotes}BioStirling({trademark}){close_quotes} Power Conversion System which combines its unique STM4-120 engine rated at 25 kW with a proven commercial gasifier. The BioStirling({trademark}) proof-of-concept demonstration is funded by DOE`s National Renewable Energy Laboratory and is to be completed in late 1996, with field demonstrations in 1997 and commercial availability 1998.

Johansson, L. [Stirling Thermal Motors, Inc., Ann Arbor, MI (United States); Ziph, B.; McKeough, W.; Houtman, W.

1996-12-31T23:59:59.000Z

224

Heating, Ventilation, and Air Conditioning Renovations | Department of  

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

Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations October 16, 2013 - 4:49pm Addthis Renewable Energy Options for HVAC Renovations Geothermal Heat Pumps (GHP) Solar Water Heating (SWH) Biomass Passive Solar Heating Biomass Heating Solar Ventilation Air Preheating Federal building renovations that encompass the heating, ventilation, and air conditioning (HVAC) systems in a facility provide a range of renewable energy opportunities. The primary technology option for HVAC renovations is geothermal heat pumps (GHP). Other options include leveraging a solar water heating (SWH) system to offset heating load or using passive solar heating or a biomass-capable furnace or boiler. Some facilities may also take

225

Optimization in solar heating/photovoltaic systems. Master's thesis  

SciTech Connect

This thesis is a design of an alternative system which may provide heating to the Naval Postgraduate School swimming pool. Particularly, it is a solar heating/photovoltaic system designed for a better efficiency and less cost of installation and maintenance. Principles of heat transfer, control and fluid dynamics theory are used for the determination of this heating system elements. The feasibility of its installation and use is analyzed.

Vourazelis, D.G.

1990-12-01T23:59:59.000Z

226

Biomass Thermal Energy Council (BTEC) | Open Energy Information  

Open Energy Info (EERE)

Biomass Thermal Energy Council (BTEC) Biomass Thermal Energy Council (BTEC) Jump to: navigation, search Tool Summary Name: Biomass Thermal Energy Council (BTEC) Agency/Company /Organization: Biomass Thermal Energy Council (BTEC) Partner: International Trade Administration Sector: Energy Focus Area: Biomass, - Biomass Combustion, - Biomass Gasification, - Biomass Pyrolysis, - Biofuels Phase: Determine Baseline, Evaluate Options, Develop Goals Resource Type: Guide/manual User Interface: Website Website: www.biomassthermal.org Cost: Free The Biomass Thermal Energy Council (BTEC) website is focused on biomass for heating and other thermal energy applications, and includes links to numerous reports from various agencies around the world. Overview The Biomass Thermal Energy Council (BTEC) website is focused on biomass for

227

STUDY OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS  

E-Print Network (OSTI)

STUDY OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS Dissertation . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3.5.3 Air Side Heat Transfer Rates . . . . . . . . . . . . . . . . . . 43 3.5.4 Fluid Side Heat

228

Special Property Assessment for Renewable Heating and Cooling Systems |  

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

Special Property Assessment for Renewable Heating and Cooling Special Property Assessment for Renewable Heating and Cooling Systems Special Property Assessment for Renewable Heating and Cooling Systems < Back Eligibility Commercial Industrial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Program Info State Maryland Program Type Property Tax Incentive Rebate Amount Eligible property is assessed at no more than the value of a conventional system Provider Department of Assessments and Taxation Title 8 of Maryland's property tax code includes a state-wide special assessment for solar and geothermal heating and cooling systems. Under this provision, such systems are to be assessed at not more than the value of a conventional system for property tax purposes if no conventional system

229

A new cascade-type heat conversion system  

SciTech Connect

Various heat conversion systems have different operating temperatures. This paper shows how, in a solar energy system some of the waste heat from a thermophotovoltaic arrangement can be made to operate a thermionic power generator. The waste heat of the thermionic power generator can then be made to operate an alkali-metal thermal electric converter, and the waste heat from the alkali-metal thermal electric converter as well as the rest of the waste heat of the thermophotovoltaic system can be made to operate a methane reformation system. Stored heat from the methane reformation system can be made to operate the system at night. The overall system efficiency of the example shown is 42.6%. As a prime source of heat a nuclear pile or burning hydrogen may be used.

Newman, E. [Twenty-First Century Power Co., Northridge, CA (United States)

1996-12-31T23:59:59.000Z

230

Hybrid Geothermal Heat Pump System Research Geothermal Project | Open  

Open Energy Info (EERE)

Hybrid Geothermal Heat Pump System Research Geothermal Project Hybrid Geothermal Heat Pump System Research Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Hybrid Geothermal Heat Pump System Research Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 2: Data Gathering and Analysis Project Description Geothermal, or ground-source heat pump systems have been shown to have superior energy performance to conventional heating and cooling systems in many building types and climates. There has been significant growth in the application of these systems; yet, geothermal systems have only been able to capture a few percent of the heating and cooling market. This is due primarily to the prohibitively high cost of installing the necessary ground loop.

231

Thermoeconomic Analysis of a Solar Heat-Pump System  

E-Print Network (OSTI)

This paper introduces a solar energy heat-pump system and analyzes the thermoeconomics. The results show that the solar energy heat-pump system can be operated in different modes and used for room heating in winter and cooling in summer and...

Gao, Y.; Wang, S.

2006-01-01T23:59:59.000Z

232

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect

The Energy & Environmental Research Center (EERC) has completed a project to examine fundamental issues that could limit the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC attempted to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low-volatile fuels with lower reactivities can experience problematic fouling when switched to higher-volatile and more reactive coal-biomass blends. Higher heat release rates at the grate can cause increased clinkering or slagging at the grate due to higher temperatures. Combustion and loss of volatile matter can start much earlier for biomass fuels compared to design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the stoker, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates, various chlorides, and phosphates. These species in combination with different flue gas temperatures, because of changes in fuel heating value, can adversely affect ash deposition behavior. The goal of this project was to identify the primary ash mechanisms related to grate clinkering and heat exchange surface fouling associated with cofiring coal and biomass--specifically wood and agricultural residuals--in grate-fired systems, leading to future mitigation of these problems. The specific technical objectives of the project were: (1) Modification of an existing pilot-scale combustion system to simulate a grate-fired system. (2) Verification testing of the simulator. (3) Laboratory-scale testing and fuel characterization to determine ash formation and potential fouling mechanisms and to optimize activities in the modified pilot-scale system. (4) Pilot-scale testing in the grate-fired system. The resulting data were used to elucidate ash-related problems during coal-biomass cofiring and offer a range of potential solutions.

Bruce C. Folkedahl; Jay R. Gunderson; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2002-09-01T23:59:59.000Z

233

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect

The Energy & Environmental Research Center (EERC) is conducting a project to examine the fundamental issues limiting the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC is attempting to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low volatile fuels with lower reactivities can experience damaging fouling when switched to higher volatile and more reactive lower-rank fuels, such as when cofiring biomass. Higher heat release rates at the grate can cause more clinkering or slagging at the grate because of higher temperatures. Combustion and loss of volatile matter can start too early for biomass fuels compared to the design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the stoker, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates and various chlorides, in combination with different flue gas temperatures because of changes in fuel heating value which can adversely affect ash deposition behavior. The goal of this project is to identify the primary ash mechanisms related to grate clinkering and heat exchange surface fouling associated with cofiring coal and biomass--specifically wood and agricultural residuals--in grate-fired systems, leading to future mitigation of these problems. The specific technical objectives of the project are: Modification of an existing EERC pilot-scale combustion system to simulate a grate-fired system; Verification testing of the simulator; Laboratory-scale testing and fuel characterization to determine ash formation and potential fouling mechanisms and to optimize activities in the modified pilot-scale system; and Pilot-scale testing in the grate-fired system. The resulting data will be collected, analyzed, and reported to elucidate ash-related problems during biomass-coal cofiring and offer a range of potential solutions.

Bruce C. Folkedahl; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2001-10-01T23:59:59.000Z

234

Biomass | Department of Energy  

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

Energy » Energy » Biomass Biomass Learn how the Energy Department is working to sustainably transform the nation's abundant renewable resources into biomass energy. Featured Energy 101 | Algae-to-Fuel A behind-the-scenes video of how oil from algae is extracted and refined to create clean, renewable transportation fuel. Oregon Hospital Heats Up with a Biomass Boiler Using money from the Recovery Act, Blue Mountain Hospital replaced one of its 1950s crude oil boilers with a wood-pellet boiler -- saving the hospital about $100,000 a year in heating costs. | Photo courtesy of the Oregon Department of Energy. Highlighting how a rural Oregon hospital was able to cut its heating bills while stimulating the local economy. Ceres: Making Biofuels Bigger and Better A Ceres researcher evaluates the performance of biofuel crops. | Photo courtesy of Ceres, Inc.

235

Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems  

E-Print Network (OSTI)

tool for geothermal water loop heat pump systems, 9thInternational IEA Heat Pump Conference, Zürich, Switzerland,Performance of ground source heat pump system in a near-zero

Hong, Tainzhen

2010-01-01T23:59:59.000Z

236

CCHP System with Interconnecting Cooling and Heating Network  

E-Print Network (OSTI)

The consistency between building heating load, cooling load and power load are analyzed in this paper. The problem of energy waste and low equipment usage in a traditional CCHP (combined cooling, heating and power) system with generated electricity...

Fu, L.; Geng, K.; Zheng, Z.; Jiang, Y.

2006-01-01T23:59:59.000Z

237

Combined heat recovery and make-up water heating system  

SciTech Connect

A cogeneration plant is described comprising in combination: a first stage source of hot gas; a duct having an inlet for receiving the hot gas and an outlet stack open to the atmosphere; a second stage recovery heat steam generator including an evaporator situated in the duct, and economizer in the duct downstream of the evaporator, and steam drum fluidly connected to the evaporator and the economizer; feedwater supply means including a deaerator heater and feedwater pump for supplying deaerated feedwater to the steam drum through the economizer; makeup water supply means including a makeup pump for delivering makeup water to the deaerator heater; means fluidly connected to the steam drum for supplying auxiliary steam to the deaerator heater; and heat exchanger means located between the deaerator and the economizer, for transferring heat from the feedwater to the makeup water, thereby increasing the temperature of the makeup water delivered to the deaerator and decreasing the temperature of the feedwater delivered to the economizer, without fluid exchange.

Kim, S.Y.

1988-05-24T23:59:59.000Z

238

Biomass Energy Production Incentive | Department of Energy  

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

Biomass Energy Production Incentive Biomass Energy Production Incentive Biomass Energy Production Incentive < Back Eligibility Agricultural Commercial Industrial Savings Category Bioenergy Commercial Heating & Cooling Manufacturing Buying & Making Electricity Maximum Rebate 100,000 per fiscal year per taxpayer; 2.1 million per fiscal year for all taxpayers Program Info Start Date 5/29/2008 State South Carolina Program Type Performance-Based Incentive Rebate Amount 0.01 per kWh / 0.30 per therm Provider South Carolina Energy Office In 2007 South Carolina enacted the ''Energy Freedom and Rural Development Act'', which provides production incentives for certain biomass-energy facilities. Eligible systems earn $0.01 per kilowatt-hour (kWh) for electricity generated or $0.30 per therm (100,000 Btu) for energy produced

239

Energy Efficient Integration of Heat Pumps into Solar District Heating Systems with Seasonal Thermal Energy Storage  

Science Journals Connector (OSTI)

Abstract Solar district heating (SDH) with seasonal thermal energy storage (STES) is a technology to provide heat for space heating and domestic hot water preparation with a high fraction of renewable energy. In order to improve the efficiency of such systems heat pumps can be integrated. By preliminary studies it was discovered, that the integration of a heat pump does not always lead to improvements from an overall energy perspective, although the operation of the heat pump increases the efficiency of other components of the system e. g. the STES or the solar collectors. Thus the integration of heat pumps in SDH systems was investigated in detail. Usually, the heat pumps are integrated in such a way, that the STES is used as low temperature heat source. No other heat sources from the ambience are used and only that amount of energy consumed by the heat pump is additionally fed into the system. In the case of an electric driven heat pump, this is highly questionable concerning economic and CO2-emission aspects. Despite that fact the operation of the heat pump influences positively the performance of other components in the system e. g. the STES and makes them more efficient. If the primary energy consumption of the heat pump is lower than the energetic benefits of all other components, the integration makes sense from an energetic point of view. A detailed assessment has been carried out to evaluate the most promising system configurations for the integration of a heat pump. Based on this approach a system concept was developed in which the integration of the heat pump is energetically further improved compared to realised systems. By means of transient system simulations this concept was optimised with regard to the primary energy consumption. A parameter study of this new concept has been performed to identify the most sensitive parameters of the system. The main result and conclusion are that higher solar fractions and also higher primary energy savings can be achieved by SDH systems using heat pumps compared systems without heat pumps.

Roman Marx; Dan Bauer; Harald Drueck

2014-01-01T23:59:59.000Z

240

Complex pendulum biomass sensor  

DOE Patents (OSTI)

A complex pendulum system biomass sensor having a plurality of pendulums. The plurality of pendulums allow the system to detect a biomass height and density. Each pendulum has an angular deflection sensor and a deflector at a unique height. The pendulums are passed through the biomass and readings from the angular deflection sensors are fed into a control system. The control system determines whether adjustment of machine settings is appropriate and either displays an output to the operator, or adjusts automatically adjusts the machine settings, such as the speed, at which the pendulums are passed through the biomass. In an alternate embodiment, an entanglement sensor is also passed through the biomass to determine the amount of biomass entanglement. This measure of entanglement is also fed into the control system.

Hoskinson, Reed L. (Rigby, ID); Kenney, Kevin L. (Idaho Falls, ID); Perrenoud, Ben C. (Rigby, ID)

2007-12-25T23:59:59.000Z

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


241

Heat pump system with selective space cooling  

DOE Patents (OSTI)

A reversible heat pump provides multiple heating and cooling modes and includes a compressor, an evaporator and heat exchanger all interconnected and charged with refrigerant fluid. The heat exchanger includes tanks connected in series to the water supply and a condenser feed line with heat transfer sections connected in counterflow relationship. The heat pump has an accumulator and suction line for the refrigerant fluid upstream of the compressor. Sub-cool transfer tubes associated with the accumulator/suction line reclaim a portion of the heat from the heat exchanger. A reversing valve switches between heating/cooling modes. A first bypass is operative to direct the refrigerant fluid around the sub-cool transfer tubes in the space cooling only mode and during which an expansion valve is utilized upstream of the evaporator/indoor coil. A second bypass is provided around the expansion valve. A programmable microprocessor activates the first bypass in the cooling only mode and deactivates the second bypass, and vice-versa in the multiple heating modes for said heat exchanger. In the heating modes, the evaporator may include an auxiliary outdoor coil for direct supplemental heat dissipation into ambient air. In the multiple heating modes, the condensed refrigerant fluid is regulated by a flow control valve. 4 figs.

Pendergrass, J.C.

1997-05-13T23:59:59.000Z

242

Heat pump system with selective space cooling  

DOE Patents (OSTI)

A reversible heat pump provides multiple heating and cooling modes and includes a compressor, an evaporator and heat exchanger all interconnected and charged with refrigerant fluid. The heat exchanger includes tanks connected in series to the water supply and a condenser feed line with heat transfer sections connected in counterflow relationship. The heat pump has an accumulator and suction line for the refrigerant fluid upstream of the compressor. Sub-cool transfer tubes associated with the accumulator/suction line reclaim a portion of the heat from the heat exchanger. A reversing valve switches between heating/cooling modes. A first bypass is operative to direct the refrigerant fluid around the sub-cool transfer tubes in the space cooling only mode and during which an expansion valve is utilized upstream of the evaporator/indoor coil. A second bypass is provided around the expansion valve. A programmable microprocessor activates the first bypass in the cooling only mode and deactivates the second bypass, and vice-versa in the multiple heating modes for said heat exchanger. In the heating modes, the evaporator may include an auxiliary outdoor coil for direct supplemental heat dissipation into ambient air. In the multiple heating modes, the condensed refrigerant fluid is regulated by a flow control valve.

Pendergrass, Joseph C. (Gainesville, GA)

1997-01-01T23:59:59.000Z

243

Simulation and Validation of a Single Tank Heat Pump Assisted Solar Domestic Water Heating System.  

E-Print Network (OSTI)

??This thesis is a study of an indirect heat pump assisted solar domestic hot water (I-HPASDHW) system, where the investigated configuration is called the Dual… (more)

Wagar, William Robert

2013-01-01T23:59:59.000Z

244

Biomass 2014 Attendee List  

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

Bender Novozymes Bryna Berendzen DOE - Bioenergy Technologies Office Joshua Berg The Earth Partners Dilfia Bermudez Summerhill Biomass Systems Inc. Michael Bernstein BCS, Inc....

245

"Optimization of Zero Length Chromatographic System and Measuring Properties of Model Compounds from Biomass Pyrolysis"  

E-Print Network (OSTI)

Compounds from Biomass Pyrolysis" Ross Kendall Faculty Mentor: Dr. Paul Dauenhauer, Chemical Engineering by using what he made to measure many of the compounds involved in biomass pyrolysis. If we can understand to retrieve diffusion coefficients of many intermediates of the biomass pyrolysis reaction. From this data

Mountziaris, T. J.

246

Control valve for solar heating systems  

SciTech Connect

A control valve for a solar heating system is disclosed. The valve has a valve body which defines four chambers disposed end to end. A valve operating rod is movable axially through all four chambers under motor control and carries a valve member for directing liquid through the valve. In one position of the valve member, incoming liquid is directed to an outlet for connection to a solar collector and liquid returning from the collector can flow through the valve body and back to the swimming pool. In the other position of the valve member, the liquid bypasses the collector and is directed back to the pool while liquid in the collector drains back into the valve body through the outlet and is removed by suction from a drain-down chamber in the valve body.

Stewart, J.M.

1981-12-29T23:59:59.000Z

247

Design Considerations for Industrial Heat Recovery Systems  

E-Print Network (OSTI)

in these high-quality waste heat streams, at today's oil prices, is approximately 12 billion dollars per year. Heat recovery is perhaps one of the largest energy conservation opportunities available to U. S. industries today. The author reviews basic heat...

Bywaters, R. P.

1979-01-01T23:59:59.000Z

248

Environmentally Friendly Systems: Earth Heat Pump System with Vertical Pipes for Heat Extraction for Domestic Heating and Cooling  

Science Journals Connector (OSTI)

Geothermal heat pumps (GSHPs), or direct expansion (DX) ground source heat pumps, are highly efficient renewable energy technology, ... the earth, groundwater or surface water as heat sources when operating in heating

Saffa Riffat; Siddig Omer; Abdeen Omer

2014-01-01T23:59:59.000Z

249

The role of biomass in California's hydrogen economy  

E-Print Network (OSTI)

context of the full biomass energy system. Clearly, biomassa Business from Biomass in Energy, Environment, Chemicals,by far the lowest biomass gasi?cation energy conversion ef?

Parker, Nathan C; Ogden, Joan; Fan, Yueyue

2009-01-01T23:59:59.000Z

250

A PASSIVE SOLAR HEATING SYSTEM COMBINED WITH A HEATPUMP AND A LONG TERM HEAT STORAGE  

Science Journals Connector (OSTI)

ABSTRACT This paper describes the design and the first preliminary performance results of a sunspace attached to an existent building, combined with a heatpump and a long term heat storage. The aim of the project is to study the possibility of storing the excess heat of the passive system in a low temperature storage, which is used as cold source for a heatpump. The advantages of the presented system are that the energy flows in the passive solar system can be controlled and that a rather high solar fraction can be obtained (around .7 to .8 in the climate of Ispra). KEYWORDS Passive solar energy, heat pump, heat storage

D. van Hattem; R. Colombo; P. Actis-Dato

1988-01-01T23:59:59.000Z

251

Siting Your Solar Water Heating System | Department of Energy  

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

Siting Your Solar Water Heating System Siting Your Solar Water Heating System Siting Your Solar Water Heating System May 30, 2012 - 2:46pm Addthis Solar water heaters should be placed facing due south. Solar water heaters should be placed facing due south. Before you buy and install a solar water heating system, you need to first consider your site's solar resource, as well as the optimal orientation and tilt of your solar collector. The efficiency and design of a solar water heating system depends on how much of the sun's energy reaches your building site. Solar water heating systems use both direct and diffuse solar radiation. Even if you don't live in a climate that's warm and sunny most of the time -- like the southwestern United States -- your site still might have an adequate solar resource. If your building site has unshaded areas and

252

Siting Your Solar Water Heating System | Department of Energy  

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

Siting Your Solar Water Heating System Siting Your Solar Water Heating System Siting Your Solar Water Heating System May 30, 2012 - 2:46pm Addthis Solar water heaters should be placed facing due south. Solar water heaters should be placed facing due south. Before you buy and install a solar water heating system, you need to first consider your site's solar resource, as well as the optimal orientation and tilt of your solar collector. The efficiency and design of a solar water heating system depends on how much of the sun's energy reaches your building site. Solar water heating systems use both direct and diffuse solar radiation. Even if you don't live in a climate that's warm and sunny most of the time -- like the southwestern United States -- your site still might have an adequate solar resource. If your building site has unshaded areas and

253

Model Reduction for Power Electronics Systems with Multiple Heat Sources  

E-Print Network (OSTI)

Model Reduction for Power Electronics Systems with Multiple Heat Sources A. Augustin, T. Hauck, B demonstrates the model order re- duction procedures applied to semiconductor devices with multiple heat sources. The approach is demonstrated for a device with nine heat sources where some of them are perma- nently active

Paris-Sud XI, Université de

254

Power systems utilizing the heat of produced formation fluid  

DOE Patents (OSTI)

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method includes treating a hydrocarbon containing formation. The method may include providing heat to the formation; producing heated fluid from the formation; and generating electricity from at least a portion of the heated fluid using a Kalina cycle.

Lambirth, Gene Richard (Houston, TX)

2011-01-11T23:59:59.000Z

255

Chemical heat pump and chemical energy storage system  

DOE Patents (OSTI)

A chemical heat pump and storage system employs sulfuric acid and water. In one form, the system includes a generator and condenser, an evaporator and absorber, aqueous acid solution storage and water storage. During a charging cycle, heat is provided to the generator from a heat source to concentrate the acid solution while heat is removed from the condenser to condense the water vapor produced in the generator. Water is then stored in the storage tank. Heat is thus stored in the form of chemical energy in the concentrated acid. The heat removed from the water vapor can be supplied to a heat load of proper temperature or can be rejected. During a discharge cycle, water in the evaporator is supplied with heat to generate water vapor, which is transmitted to the absorber where it is condensed and absorbed into the concentrated acid. Both heats of dilution and condensation of water are removed from the thus diluted acid. During the discharge cycle the system functions as a heat pump in which heat is added to the system at a low temperature and removed from the system at a high temperature. The diluted acid is stored in an acid storage tank or is routed directly to the generator for reconcentration. The generator, condenser, evaporator, and absorber all are operated under pressure conditions specified by the desired temperature levels for a given application. The storage tanks, however, can be maintained at or near ambient pressure conditions. In another form, the heat pump system is employed to provide usable heat from waste process heat by upgrading the temperature of the waste heat.

Clark, Edward C. (Woodinville, WA); Huxtable, Douglas D. (Bothell, WA)

1985-08-06T23:59:59.000Z

256

Thaw flow control for liquid heat transport systems  

DOE Patents (OSTI)

In a liquid metal heat transport system including a source of thaw heat for use in a space reactor power system, the thaw flow throttle or control comprises a fluid passage having forward and reverse flow sections and a partition having a plurality of bleed holes therein to enable fluid flow between the forward and reverse sections. The flow throttle is positioned in the system relatively far from the source of thaw heat.

Kirpich, Aaron S. (Broomall, PA)

1989-01-01T23:59:59.000Z

257

Optimization of Advanced Ground-Coupled Heat Pump Systems A heat pump is a technology in which heating and cooling are provided by a single piece of equipment.  

E-Print Network (OSTI)

Optimization of Advanced Ground-Coupled Heat Pump Systems A heat pump is a technology in which heating and cooling are provided by a single piece of equipment. In a Ground Coupled Heat Pump (GCHP) system a length of pipe is buried in the ground and the ground acts as a reservoir to store the heat

Wisconsin at Madison, University of

258

Analyzing the efficiency of a heat pump assisted drain water heat recovery system that uses a vertical inline heat exchanger  

Science Journals Connector (OSTI)

Abstract The purpose of the present study is to accumulate knowledge on how a drain water heat recovery system using a vertical inline heat exchanger and a heat pump performs under different drain water flow profile scenarios. Investigating how the intermittent behavior of the drain water influences the performance for this type of system is important because it gives insight on how the system will perform in a real life situation. The scenarios investigated are two 24 h drain water flow rate schedules and one shorter schedule representing a three minute shower. The results from the present paper add to the knowledge on how this type of heat recovery system performs in a setting similar to a multi-family building and how sizing influences the performance. The investigation shows that a heat recovery system of this type has the possibility to recover a large portion of the available heat if it has been sized to match the drain water profile. Sizing of the heat pump is important for the system performance; sizing of the storage tank is also important but not as critical.

Jörgen Wallin; Joachim Claesson

2014-01-01T23:59:59.000Z

259

BSU GHP District Heating and Cooling System (Phase I)  

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

BSU GHP District Heating and Cooling System (Phase I) James Lowe Ball State University May 03, 2010 This presentation does not contain any proprietary confidential, or otherwise...

260

Experimental Measurement of Radiation Heat Transfer from Complex Fenestration Systems.  

E-Print Network (OSTI)

??A well instrumented facility for the measurement of heat transfer from complex fenestration systems was built and validated. The facility provided very accurate measurements based… (more)

Wilson, Barry Allan

2007-01-01T23:59:59.000Z

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


261

Trimming of a ground source heat pump system in Saltsjöbaden.  

E-Print Network (OSTI)

?? The real performance of ground source heat pumps systems are not precisely highlighted in most cases, especially when it comes to installations older than… (more)

Garnier, Michel

2014-01-01T23:59:59.000Z

262

Solar pool heating system: An olympic-sized effort  

SciTech Connect

This article describes design and building of the Georgia Tech Aquatic Center Heliocol solar pool heating system, developed for the 1996 Olympics in Atlanta.

Sheinkopf, K.

1996-07-01T23:59:59.000Z

263

Combined Heat and Power System Achieves Millions in Cost Savings...  

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

campus, which includes 750 buildings. Photo courtesy of Texas A&M University Combined Heat and Power System Achieves Millions in Cost Savings at Large University Recovery Act...

264

New Advanced System Utilizes Industrial Waste Heat to Power Water...  

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

Water Reuse ADVANCED MANUFACTURING OFFICE New Advanced System Utilizes Industrial Waste Heat to Power Water Purification Introduction As population growth and associated factors...

265

Combined Heat and Power System Enables 100% Reliability at Leading...  

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

Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Thermal...

266

Combined Heat and Power System Achieves Millions in Cost Savings...  

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

Achieves Millions in Cost Savings at Large University - Case Study, 2013 Combined Heat and Power System Achieves Millions in Cost Savings at Large University - Case Study, 2013...

267

Combined Heat and Power System Enables 100% Reliability at Leading...  

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

buildings on nearly 1,000 acres. Photo courtesy of Thermal Energy Corporation Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus Recovery Act...

268

Flathead Electric Cooperative Facility Geothermal Heat Pump System...  

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

Cooperative is uniquely positioned to provide marketing of ground source heat pump systems * 15' Static Water Level * Low Pumping Power * Reduced Installation Costs * Good...

269

Modeling, Estimation, and Control of Waste Heat Recovery Systems  

E-Print Network (OSTI)

for Open Organic Rankine Cycle (ORC)138 Evaporatorand Simulation of an Organic Rankine Cycle (ORC) System forControl of Organic Rankine Cycles in Waste Heat Uti- lizing

Luong, David

2013-01-01T23:59:59.000Z

270

Save Energy Now in Your Process Heating Systems  

SciTech Connect

This DOE Industrial Technologies Program fact sheet describes how manufacturing plants can save energy and money by making energy efficiency improvements to their industrial process heating systems.

Not Available

2006-01-01T23:59:59.000Z

271

Save Energy Now in Your Process Heating Systems  

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

This fact sheet describes how manufacturing plants can save energy and money by making energy efficiency improvements to their industrial process heating systems.

272

Heat recovery and the economizer for HVAC systems  

SciTech Connect

This articles examines why a combined heat reclaim/economizer system with priority to heat reclaim operation is most likely to result in the least annual total HVAC energy. PC-based, hour-by-hour simulation programs evaluate annual HVAC energy requirements when using combined operation of heat reclaim and economizer cycle, while giving priority to operation of either one. These simulation programs also enable the design engineer to select the most viable heat reclaim and/or economizer system for any given type of HVAC system serving the building internal load level, building geographical location and other building/system variables.

Anantapantula, V.S. (Emerson Electric Co., St. Louis, MO (United States). Alco Controls Div.); Sauer, H.J. Jr. (Univ. of Missouri, Rolla, MO (United States))

1994-11-01T23:59:59.000Z

273

Building America Webinar: Central Multifamily Water Heating Systems  

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

This U.S. Department of Energy Building America webinar, Central Multifamily Water Heating Systems, will take place on January 21, 2015.

274

Method of measuring heat influx of a cryogenic transfer system  

DOE Patents (OSTI)

A method is provided for measuring the heat influx of a cryogenic transfer system. A gaseous phase of the cryogen used during normal operation of the system is passed through the system. The gaseous cryogen at the inlet to the system is tempered to duplicate the normal operating temperature of the system inlet. The temperature and mass flow rate of the gaseous cryogen is measured at the outlet of the system, and the heat capacity of the cryogen is determined. The heat influx of the system is then determined from known thermodynamic relationships.

Niemann, Ralph C. (Downers Grove, IL); Zelipsky, Steven A. (Tinley Park, IL); Rezmer, Ronald R. (Lisle, IL); Smelser, Peter (Bruner, MO)

1981-01-01T23:59:59.000Z

275

Heating and Cooling System Support Equipment Basics | Department of Energy  

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

Heating and Cooling System Support Equipment Basics Heating and Cooling System Support Equipment Basics Heating and Cooling System Support Equipment Basics July 30, 2013 - 3:28pm Addthis Thermostats and ducts provide opportunities for saving energy. Dehumidifying heat pipes provide a way to help central air conditioners and heat pumps dehumidify air. Electric and gas meters allow users to track energy use. Thermostats Programmable thermostats can store and repeat multiple daily settings. Users can adjust the times heating or air-conditioning is activated according to a pre-set schedule. Visit the Energy Saver website for more information about thermostats and control systems in homes. Ducts Efficient and well-designed duct systems distribute air properly throughout a building, without leaking, to keep all rooms at a comfortable

276

Biomass Thermochemical Conversion Program. 1983 Annual report  

SciTech Connect

Highlights of progress achieved in the program of thermochemical conversion of biomass into clean fuels during 1983 are summarized. Gasification research projects include: production of a medium-Btu gas without using purified oxygen at Battelle-Columbus Laboratories; high pressure (up to 500 psia) steam-oxygen gasification of biomass in a fluidized bed reactor at IGT; producing synthesis gas via catalytic gasification at PNL; indirect reactor heating methods at the Univ. of Missouri-Rolla and Texas Tech Univ.; improving the reliability, performance, and acceptability of small air-blown gasifiers at Univ. of Florida-Gainesville, Rocky Creek Farm Gasogens, and Cal Recovery Systems. Liquefaction projects include: determination of individual sequential pyrolysis mechanisms at SERI; research at SERI on a unique entrained, ablative fast pyrolysis reactor for supplying the heat fluxes required for fast pyrolysis; work at BNL on rapid pyrolysis of biomass in an atmosphere of methane to increase the yields of olefin and BTX products; research at the Georgia Inst. of Tech. on an entrained rapid pyrolysis reactor to produce higher yields of pyrolysis oil; research on an advanced concept to liquefy very concentrated biomass slurries in an integrated extruder/static mixer reactor at the Univ. of Arizona; and research at PNL on the characterization and upgrading of direct liquefaction oils including research to lower oxygen content and viscosity of the product. Combustion projects include: research on a directly fired wood combustor/gas turbine system at Aerospace Research Corp.; adaptation of Stirling engine external combustion systems to biomass fuels at United Stirling, Inc.; and theoretical modeling and experimental verification of biomass combustion behavior at JPL to increase biomass combustion efficiency and examine the effects of additives on combustion rates. 26 figures, 1 table.

Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

1984-08-01T23:59:59.000Z

277

A ground-coupled storage heat pump system with waste heat recovery  

SciTech Connect

This paper reports on an experimental single-family residence that was constructed to demonstrate integration of waste heat recovery and seasonal energy storage using both a ventilating and a ground-coupled heat pump. Called the Idaho energy Conservation Technology House, it combines superinsulated home construction with a ventilating hot water heater and a ground coupled water-to-water heat pump system. The ground heat exchangers are designed to economically promote seasonal and waste heat storage. Construction of the house was completed in the spring of 1989. Located in Moscow, Idaho, the house is occupied by a family of three. The 3,500 ft{sup 2} (325 m{sup 2}) two-story house combines several unique sub-systems that all interact to minimize energy consumption for space heating and cooling, and domestic hot water.

Drown, D.C.; Braven, K.R.D. (Univ. of Idaho, ID (US)); Kast, T.P. (Thermal Dynamic Towers, Boulder, CO (US))

1992-02-01T23:59:59.000Z

278

Underground Mine Water Heating and Cooling Using Geothermal Heat Pump Systems  

SciTech Connect

In many regions of the world, flooded mines are a potentially cost-effective option for heating and cooling using geothermal heat pump systems. For example, a single coal seam in Pennsylvania, West Virginia, and Ohio contains 5.1 x 1012 L of water. The growing volume of water discharging from this one coal seam totals 380,000 L/min, which could theoretically heat and cool 20,000 homes. Using the water stored in the mines would conservatively extend this option to an order of magnitude more sites. Based on current energy prices, geothermal heat pump systems using mine water could reduce annual costs for heating by 67% and cooling by 50% over conventional methods (natural gas or heating oil and standard air conditioning).

Watzlaf, G.R.; Ackman, T.E.

2006-03-01T23:59:59.000Z

279

Tips: Natural Gas and Oil Heating Systems | Department of Energy  

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

Natural Gas and Oil Heating Systems Natural Gas and Oil Heating Systems Tips: Natural Gas and Oil Heating Systems May 30, 2012 - 5:41pm Addthis Install a new energy-efficient furnace to save money over the long term. Install a new energy-efficient furnace to save money over the long term. If you plan to buy a new heating system, ask your local utility or state energy office about the latest technologies on the market. For example, many newer models have designs for burners and heat exchangers that are more efficient during operation and cut heat loss when the equipment is off. Consider a sealed-combustion furnace -- they are safer and more efficient. Long-Term Savings Tip Install a new energy-efficient furnace to save money over the long term. Look for the ENERGY STAR® and EnergyGuide labels to compare efficiency and

280

AMBIPOLAR DIFFUSION HEATING IN TURBULENT SYSTEMS  

SciTech Connect

The temperature of the gas in molecular clouds is a key determinant of the characteristic mass of star formation. Ambipolar diffusion (AD) is considered one of the most important heating mechanisms in weakly ionized molecular clouds. In this work, we study the AD heating rate using two-fluid turbulence simulations and compare it with the overall heating rate due to turbulent dissipation. We find that for observed molecular clouds, which typically have Alfven Mach numbers of {approx}1 and AD Reynolds numbers of {approx}20, about 70% of the total turbulent dissipation is in the form of AD heating. AD has an important effect on the length scale where energy is dissipated: when AD heating is strong, most of the energy in the cascade is removed by ion-neutral drift, with a comparatively small amount of energy making it down to small scales. We derive a relation for the AD heating rate that describes the results of our simulations to within a factor of two. Turbulent dissipation, including AD heating, is generally less important than cosmic-ray heating in molecular clouds, although there is substantial scatter in both.

Li, Pak Shing [Astronomy Department, University of California, Berkeley, CA 94720 (United States); Myers, Andrew [Physics Department, University of California, Berkeley, CA 94720 (United States); McKee, Christopher F., E-mail: psli@astron.berkeley.edu, E-mail: atmyers@berkeley.edu, E-mail: cmckee@berkeley.edu [Physics Department and Astronomy Department, University of California, Berkeley, CA 94720 (United States)

2012-11-20T23:59:59.000Z

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


281

Heat energy Q: -energy exchanged between systems if they have a different temperature  

E-Print Network (OSTI)

About heat Heat energy Q: - energy exchanged between systems if they have a different temperature - heat flows from higher to lower temperature - without temperature difference, no heat is exchanged If a system is receiving or releasing heat, then this heat is called a) Sensible heat, if the system changes

Boyd, Sylke

282

Development of a Web-based woody biomass energy expert system.  

E-Print Network (OSTI)

??Woody biomass is evolving as a potential bioenergy feedstock at an industrial scale to provide the required supply for industries relying on these resources at… (more)

Dhungana, Sabina.

2009-01-01T23:59:59.000Z

283

THERMODYNAMIC MODELLING OF BIOMASS INTEGRATED GASIFICATION COMBINED CYCLE (BIGCC) POWER GENERATION SYSTEM.  

E-Print Network (OSTI)

??An attractive and practicable possibility of biomass utilization for energy production is gasification integrated with a combined cycle. This technology seems to have the possibility… (more)

Desta, Melaku

2011-01-01T23:59:59.000Z

284

WeBiomass Inc | Open Energy Information  

Open Energy Info (EERE)

Zip: 05701 Region: Greater Boston Area Sector: Biomass Product: Commercial Biomass Boiler Systems Website: http:www.webiomass.com Coordinates: 43.58070919775,...

285

Coal and Coal-Biomass to Liquids  

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

and Coal-Biomass to Liquids News Gasifipedia Coal-Biomass Feed Advanced Fuels Synthesis Systems Analyses International Activity Project Information Project Portfolio Publications...

286

High temperature, optically transparent plastics from biomass  

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

temperature, optically transparent plastics from biomass At a Glance Rapid, selective catalytic system to produce vinyl plastics from renewable biomass Stereoregular...

287

Solar Assisted Heat Pump Systems with Ground Heat Exchanger – Simulation Studies  

Science Journals Connector (OSTI)

Abstract Different concepts of solar assisted heat pump systems with ground heat exchanger are simulated according to IEA SHC Task44/HPP Annex38 reference conditions. Two aspects of the concepts are investigated using TRNSYS simulations. First, the solar impact on system efficiency is assessed by the seasonal performance factor. Second, the solar impact on the possible shortening of the ground heat exchanger is evaluated by the minimum temperature at the ground heat exchanger inlet. The simulation results reveal diverging optimums for the concepts. The direct use of solar energy clearly achieves the best effect on the efficiency improvement. A simple domestic hot water system reaches a seasonal performance factor of 4.5 and solar combi-systems seasonal performance factors up to 6. In contrast, the use of solar energy on the cold side of the heat pump achieves the best effects on the shortening of the ground heat exchanger of up to 20%. Two highly sensitive influences are investigated with the developed transient system model. First, the minimum allowed heat source temperature is varied. Here 1 K equals a variation of 0.25 in the seasonal performance or of around 10% ground heat exchanger length. Second, the ground heat exchanger model is simulated without and with a pre-pipe that improves the transient model behavior. The influence of this pre-pipe on the SPF is small for conventionally designed ground heat exchangers, but of around 2 K for the minimum inlet temperature. Therefore, the dynamic model quality reveals potential to reduce the size of the ground heat exchanger corresponding to investment costs.

Erik Bertram

2014-01-01T23:59:59.000Z

288

Maintenance Guide for Greenhouse Ventilation, Evaporative Cooling Heating Systems1  

E-Print Network (OSTI)

condensation in winter, reduced life and reliability of ventilation equipment, and high repair bills cooling and heating systems. VENTILATION SYSTEMS The operating efficiency of a ventilation fan can be pockets of stagnant air, inadequate cooling from evaporative cooling pads, high heating expenses, heavy

Watson, Craig A.

289

Thermal Solar Energy Systems for Space Heating of Buildings  

E-Print Network (OSTI)

to compensate the deficit. In this case a traditional solar heating system having the same characteristics with regard to the solar collecting area and the volume of storage tank is used. It can be concluded that the space heating system using a solar energy...

Gomri, R.; Boulkamh, M.

2010-01-01T23:59:59.000Z

290

RTO heat recovery system decreases production costs and provides payback  

SciTech Connect

Application of a heat recovery system to an existing regenerative thermal oxidizer (RTO) was considered, tested, and selected for decreasing production costs at a pressure sensitive tape manufacturing facility. Heat recovery systems on RTO's are less common than those on other thermal oxidizers (e.g., recuperative) because RTO's, by the nature of the technology, usually provide high thermal efficiencies (without the application of external heat recovery systems). In this case, the production processes were integrated with the emission controls by applying an external heat recovery system and by optimizing the design and operation of the existing drying and cure ovens, RTO system, and ductwork collection system. Integration of these systems provides an estimated annual production cost savings of over $400,000 and a simplified capital investment payback of less than 2 years, excluding possible savings from improved dryer operations. These additional process benefits include more consistent and simplified control of seasonal dryer performance and possibly production throughput increases. The production costs savings are realized by substituting excess RTO heat for a portion of the infrared (IR) electrical heat input to the dryers/ovens. This will be accomplished by preheating the supply air to the oven zones with the excess RTO heat (i.e., heat at the RTO exceeding auto-thermal conditions). Several technologies, including direct air-to-air, indirect air-to-air, hot oil-to-air, waste heat boiler (steam-to-air) were evaluated for transferring the excess RTO heat (hot gas) to the ovens. A waste heat boiler was selected to transfer the excess RTO heat to the ovens because this technology provided the most economical, reliable, and feasible operation. Full-scale production test trials on the coating lines were performed and confirmed the IR electrical costs could be reduced up to 70%.

Lundquist, P.R.

1999-07-01T23:59:59.000Z

291

Heat efficiency of “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors  

Science Journals Connector (OSTI)

An analytic expression is proposed for determining the heat efficiency of the “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors, and on its base the heat efficiency of th...

R. R. Avezov; N. R. Avezova

2008-09-01T23:59:59.000Z

292

Experimental study on heat transfer characteristics of internal heat exchangers for CO2 system under cooling condition  

Science Journals Connector (OSTI)

This paper presents the heat transfer characteristics of the internal heat exchanger (IHX) for CO2 heat pump system. The influence on the IHX length, the mass flow rate, the shape of IHX, the operating condition,...

Young Chul Kwon; Dae Hoon Kim; Jae Heon Lee…

2009-03-01T23:59:59.000Z

293

Discussions on Disposal Forms of Auxiliary Heat Source in Surface Water Heat Pump System  

E-Print Network (OSTI)

This paper presents two common forms of auxiliary heat source in surface water heat pump system and puts forward the idea that the disposal forms affect operation cost. It deduces operation cost per hour of the two forms. With a project...

Qian, J.; Sun, D.; Li, X.; Li, G.

2006-01-01T23:59:59.000Z

294

Field application of a chemical heat and nitrogen generating system  

SciTech Connect

Heat is often required to stimulate production in wells with recurrent histories of paraffin deposition and plugging. A chemical system which produces heat and nitrogen at a predetermined well depth is proposed as an alternative to the traditional hot oil and steam generation treatments. The system is described briefly and case histories are given for 3 wells in California and 5 wells in Wyoming. The field results indicate that heat produced by the nitrogen generating system effectively stimulates production from paraffin plugged wells. The heat and nitrogen generating system further shows increased production cycle lengths over those which result from hot oil or paraffin solvent treatments. Beneficial effects of including a paraffin inhibitor in the treatment design are discussed, along with other potential applications for the heat produced by this system.

Mitchell, T.I.; Collesi, J.B.; Donovan, S.C.; McSpadden, H.W.

1984-04-01T23:59:59.000Z

295

Northeast Home Heating Oil Reserve - Online Bidding System | Department of  

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

Services » Petroleum Reserves » Heating Oil Reserve » Northeast Services » Petroleum Reserves » Heating Oil Reserve » Northeast Home Heating Oil Reserve - Online Bidding System Northeast Home Heating Oil Reserve - Online Bidding System The U.S. Department of Energy has developed an on-line bidding system - an anonymous auction program - for the sale of product from the one million barrel Northeast Home Heating Oil Reserve. We invite prospective bidders and other interested parties to try out this system and give us your views. You must register to use the system to practice or to participate in an actual emergency sale. Registration assures that you will receive e-mail alerts of sales or other pertinent news. You will also have the opportunity to establish a user ID and password to submit bids. If you establish a user ID, you will receive a temporary password by

296

Combined permeable pavement and ground source heat pump systems   

E-Print Network (OSTI)

The PhD thesis focuses on the performance assessment of permeable pavement systems incorporating ground source heat pumps (GSHP). The relatively high variability of temperature in these systems allows for the survival of pathogenic organisms within...

Grabowiecki, Piotr

2010-01-01T23:59:59.000Z

297

Designing Optimal Heat and Power Systems for Industrial Processes  

E-Print Network (OSTI)

Industrial heat and power systems are complex and not fully understood as integrated systems. Within the context of the overall manufacturing process, they represent enormous capital investments and substantially contribute to the total operating...

Rutkowski, M. A.; Witherell, W. D.

298

Experimental Research of an Active Solar Heating System  

E-Print Network (OSTI)

system are discussed in this paper. Based on the design, construction, testing and economic analysis of a demonstration project with the solar heating system, this paper discusses how to connect the solar energy collector with the electricity heater...

Gao, X.; Li, D.

2006-01-01T23:59:59.000Z

299

NO Reduction in Decoupling Combustion of Biomass and Biomass?Coal Blend  

Science Journals Connector (OSTI)

NO Reduction in Decoupling Combustion of Biomass and Biomass?Coal Blend ... Biomass is a form of energy that is CO2-neutral. ... However, NOx emissions in biomass combustion are often more than that of coal on equal heating-value basis. ...

Li Dong; Shiqiu Gao; Wenli Song; Jinghai Li; Guangwen Xu

2008-12-09T23:59:59.000Z

300

Definition: District heat | Open Energy Information  

Open Energy Info (EERE)

District heat District heat Jump to: navigation, search Dictionary.png District heat A heating system that uses steam or hot water produced outside of a building (usually in a central plant) and piped into the building as an energy source for space heating, hot water or another end use.[1][2][3] View on Wikipedia Wikipedia Definition District heating (less commonly called teleheating) is a system for distributing heat generated in a centralized location for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels but increasingly biomass, although heat-only boiler stations, geothermal heating and central solar heating are also used, as well as nuclear power. District heating plants can provide higher efficiencies and better

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


301

Zilkha Biomass Energy LLC | Open Energy Information  

Open Energy Info (EERE)

Zilkha Biomass Energy LLC Zilkha Biomass Energy LLC Jump to: navigation, search Logo: Zilkha Biomass Energy LLC Name Zilkha Biomass Energy LLC Address 1001 McKinney Place Houston, Texas Zip 77002 Sector Biomass Product Development and construction of patented biomass fueled system for co-generation of heat and electricity Website http://www.zilkha.com/ Coordinates 29.757092°, -95.363961° 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":29.757092,"lon":-95.363961,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

302

Life cycle assessment of base-load heat sources for district heating system options  

SciTech Connect

Purpose There has been an increased interest in utilizing renewable energy sources in district heating systems. District heating systems are centralized systems that provide heat for residential and commercial buildings in a community. While various renewable and conventional energy sources can be used in such systems, many stakeholders are interested in choosing the feasible option with the least environmental impacts. This paper evaluates and compares environmental burdens of alternative energy source options for the base load of a district heating center in Vancouver, British Columbia (BC) using the life cycle assessment method. The considered energy sources include natural gas, wood pellet, sewer heat, and ground heat. Methods The life cycle stages considered in the LCA model cover all stages from fuel production, fuel transmission/transportation, construction, operation, and finally demolition of the district heating system. The impact categories were analyzed based on the IMPACT 2002+ method. Results and discussion On a life-cycle basis, the global warming effect of renewable energy options were at least 200 kgeqCO2 less than that of the natural gas option per MWh of heat produced by the base load system. It was concluded that less than 25% of the upstream global warming impact associated with the wood pellet energy source option was due to transportation activities and about 50% of that was resulted from wood pellet production processes. In comparison with other energy options, the wood pellets option has higher impacts on respiratory of inorganics, terrestrial ecotoxicity, acidification, and nutrification categories. Among renewable options, the global warming impact of heat pump options in the studied case in Vancouver, BC, were lower than the wood pellet option due to BC's low carbon electricity generation profile. Ozone layer depletion and mineral extraction were the highest for the heat pump options due to extensive construction required for these options. Conclusions Natural gas utilization as the primary heat source for district heat production implies environmental complications beyond just the global warming impacts. Diffusing renewable energy sources for generating the base load district heat would reduce human toxicity, ecosystem quality degradation, global warming, and resource depletion compared to the case of natural gas. Reducing fossil fuel dependency in various stages of wood pellet production can remarkably reduce the upstream global warming impact of using wood pellets for district heat generation.

Ghafghazi, Saeed [University of British Columbia, Vancouver; Sowlati, T. [University of British Columbia, Vancouver; Sokhansanj, Shahabaddine [ORNL; Melin, Staffan [Delta Research Corporation

2011-03-01T23:59:59.000Z

303

Building Codes and Regulations for Solar Water Heating Systems | Department  

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

Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building. Not every community or municipality initially welcomes residential renewable energy installations. Although this is often due to ignorance or the comparative novelty of renewable energy systems, you must comply with existing building and permit procedures to install your system.

304

Building Codes and Regulations for Solar Water Heating Systems | Department  

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

Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building. Not every community or municipality initially welcomes residential renewable energy installations. Although this is often due to ignorance or the comparative novelty of renewable energy systems, you must comply with existing building and permit procedures to install your system.

305

Improving the Technical, Environmental, and Social Performance of Wind Energy Systems Using Biomass-Based Energy Storage  

SciTech Connect

A completely renewable baseload electricity generation system is proposed by combining wind energy, compressed air energy storage, and biomass gasification. This system can eliminate problems associated with wind intermittency and provide a source of electrical energy functionally equivalent to a large fossil or nuclear power plant. Compressed air energy storage (CAES) can be economically deployed in the Midwestern US, an area with significant low-cost wind resources. CAES systems require a combustible fuel, typically natural gas, which results in fuel price risk and greenhouse gas emissions. Replacing natural gas with synfuel derived from biomass gasification eliminates the use of fossil fuels, virtually eliminating net CO{sub 2} emissions from the system. In addition, by deriving energy completely from farm sources, this type of system may reduce some opposition to long distance transmission lines in rural areas, which may be an obstacle to large-scale wind deployment.

Denholm, P.

2006-01-01T23:59:59.000Z

306

Biomass Conversion  

Science Journals Connector (OSTI)

In its simplest terms, biomass is all the plant matter found on our planet. Biomass is produced directly by photosynthesis, the fundamental engine of life on earth. Plant photosynthesis uses energy from the su...

Stephen R. Decker; John Sheehan…

2007-01-01T23:59:59.000Z

307

Biomass Conversion  

Science Journals Connector (OSTI)

Accounting for all of the factors that go into energy demand (population, vehicle miles traveled per ... capita, vehicle efficiency) and land required for energy production (biomass land yields, biomass conversion

Stephen R. Decker; John Sheehan…

2012-01-01T23:59:59.000Z

308

Cedarville School District Retrofit of Heating and Cooling Systems with  

Open Energy Info (EERE)

School District Retrofit of Heating and Cooling Systems with School District Retrofit of Heating and Cooling Systems with Geothermal Heat Pumps and Ground Source Water Loops Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Cedarville School District Retrofit of Heating and Cooling Systems with Geothermal Heat Pumps and Ground Source Water Loops Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description - Improve the indoor air quality and lower the cost of cooling and heating the buildings that make up the campus of Cedarville High School, Middle School and Elementary School. - Provide jobs, and reduce requirements of funds for the capital budget of the School District, and thus give relief to taxpayers in this rural region during a period of economic recession. - The new Heat Pumps will be targeted to perform at very high efficiency with EER (energy efficiency ratios) of 22+/-. System capacity is planned at 610 tons. - Remove unusable antiquated existing equipment and systems from the campus heating and cooling system, but utilize ductwork, piping, etc. where feasible. The campus is served by antiquated air conditioning units combined with natural gas, and with very poor EER estimated at 6+/-. - Monitor for 3 years the performance of the new systems compared to benchmarks from the existing system, and provide data to the public to promote adoption of Geothermal technology. - The Geothermal installation contractor is able to provide financing for a significant portion of project funding with payments that fall within the energy savings resulting from the new high efficiency heating and cooling systems.

309

Property:Distributed Generation System Heating-Cooling Application | Open  

Open Energy Info (EERE)

Heating-Cooling Application Heating-Cooling Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Heating-Cooling Application" Showing 21 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Domestic Hot Water +, Space Heat and/or Cooling + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Domestic Hot Water + Distributed Generation Study/Arrow Linen + Domestic Hot Water + Distributed Generation Study/Dakota Station (Minnegasco) + Space Heat and/or Cooling +, Other + Distributed Generation Study/Elgin Community College + Space Heat and/or Cooling +, Domestic Hot Water + Distributed Generation Study/Emerling Farm + Domestic Hot Water +, Process Heat and/or Cooling +

310

Preliminary Analysis of a Solar Heat Pump System with Seasonal Storage for Heating and Cooling  

E-Print Network (OSTI)

and cooling were set up, which is responsible for the space heating and cooling and domestic hot water for a residential block. Through hourly simulation, the performance and the economics of such systems were analyzed, for the different tank volumes...

Yu, G.; Chen, P.; Dalenback, J.

2006-01-01T23:59:59.000Z

311

Experience with solar systems for heating swimming pools in Germany  

SciTech Connect

The results of the demonstration programme [open quotes]Efficient Use of Energy in Swimming Pool Construction[close quotes] has had a positive effect on the dissipation of solar systems for swimming pools. Infrared measurements show how a homogeneous flow can be achieved in the absorber field. The fact that solar systems are acceptable can be clearly in evidence that the behaviour of visitors to purely solar-heated pools with variable water temperature does not differ in principle from conventionally-heated pools with constant temperature. Economic considerations of the operation show that swimming pool solar systems are competitive with conventional heating systems.

Croy, R.; Peuser, F.A. (Zentralstelle fuer Solartechnik, Hilden (Germany))

1994-07-01T23:59:59.000Z

312

Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade  

SciTech Connect

High initial cost and lack of public awareness of ground source heat pump (GSHP) technology are the two major barriers preventing rapid deployment of this energy saving technology in the United States. Under the American Recovery and Reinvestment Act (ARRA), 26 GSHP projects have been competitively selected and carried out to demonstrate the benefits of GSHP systems and innovative technologies for cost reduction and/or performance improvement. This paper highlights findings of a case study of one of the ARRA-funded GSHP demonstration projects, which is a heating only central GSHP system using shallow aquifer as heat source and installed at a warehouse and truck bay at Kalispell, MT. This case study is based on the analysis of measured performance data, utility bills, and calculations of energy consumptions of conventional central heating systems for providing the same heat outputs as the central GSHP system did. The evaluated performance metrics include energy efficiency of the heat pump equipment and the overall GSHP system, pumping performance, energy savings, carbon emission reductions, and cost-effectiveness of GSHP system compared with conventional heating systems. This case study also identified areas for reducing uncertainties in performance evaluation, improving operational efficiency, and reducing installed cost of similar GSHP systems in the future. Publication of ASHRAE at the annual conference in Seattle.

Liu, Xiaobing [Oak Ridge National Lab] [Oak Ridge National Lab

2014-06-01T23:59:59.000Z

313

E-Print Network 3.0 - additional heating systems Sample Search...  

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

HEAT ENGINE ANALYSIS Summary: on overall system performance. Along with the addition of a heat loss term to the surroundings, the general... -reversible heat engine model is...

314

Biomass pretreatment  

SciTech Connect

A method is provided for producing an improved pretreated biomass product for use in saccharification followed by fermentation to produce a target chemical that includes removal of saccharification and or fermentation inhibitors from the pretreated biomass product. Specifically, the pretreated biomass product derived from using the present method has fewer inhibitors of saccharification and/or fermentation without a loss in sugar content.

Hennessey, Susan Marie; Friend, Julie; Elander, Richard T; Tucker, III, Melvin P

2013-05-21T23:59:59.000Z

315

ITER have a need for ion cyclotron heating (ICH) as part of the plasma heating system mix to reach the  

E-Print Network (OSTI)

Background ITER have a need for ion cyclotron heating (ICH) as part of the plasma heating system ITER ion cyclotron heating systems design Section view through antenna module Thermal model of antenna The ion cyclotron heating antenna is currently in its preliminary design phase and is undergoing detailed

316

Heating and cooling performance analysis of a ground source heat pump system in Southern Germany  

Science Journals Connector (OSTI)

Abstract This paper examines thermal performance of a ground source heat pump (GSHP) system. The GSHP system was installed in an office building in Nuremberg city of Germany. In order to evaluate system performance the GSHP system has been continuously monitored for 4 years. Heating and cooling performance of the GSHP system is analyzed based on the accumulated data. Major findings of this work include: (1) coefficient of performance (COP) is estimated to be 3.9 for a typical winter day and energy efficiency ratio (EER) is assessed to be 8.0 for a typical summer day. These results indicate that the GSHP system has a higher efficiency for building cooling than building heating. (2) For a long-term period, the seasonal energy efficiency ratio (SEER) of the GSHP system is observed to increase by 8.7% annually, whereas the seasonal COP is decreased by 4.0% over a 4-year period. The heating and cooling performance of the GSHP system migrates in opposite trend is caused by the unevenly distributed heating and cooling load of the building. This phenomenon deserves serious attention in the design of future GSHP systems in order to avoid the reducing of energy efficiency over long-term operation.

Jin Luo; Joachim Rohn; Manfred Bayer; Anna Priess; Lucas Wilkmann; Wei Xiang

2015-01-01T23:59:59.000Z

317

Definition: Biomass | Open Energy Information  

Open Energy Info (EERE)

Biomass Biomass Organic matter, including: agricultural and forestry residues, municipal solid wastes, industrial wastes, and terrestrial and aquatic crops grown solely for energy purposes.[1][2] View on Wikipedia Wikipedia Definition Biomass is biological material derived from living, or recently living organisms. It most often refers to plants or plant-derived materials which are specifically called lignocellulosic biomass. As a renewable energy source, biomass can either be used directly via combustion to produce heat, or indirectly after converting it to various forms of biofuel. Conversion of biomass to biofuel can be achieved by different methods which are broadly classified into: thermal, chemical, and biochemical methods. Historically, humans have harnessed biomass-derived

318

Automatic Tube Cleaning Systems for Condensers & Heat Exchangers  

E-Print Network (OSTI)

than 36 in. in diameter. Thus, mos of the ball systems are in fossil fuel, nuclear) cogeneration, and geothermal power plants. The temperature (maximum 220 0 F) and process limitations of the rubber ball material restrict the use of ball systems... of Heat Exchangers," Hydrocarbon Processing, pp. 25-27 (Jan. 1983) 7. Grande. M?? and K. SCIEah. "Automatic On-Line Mechanical Cleaning System for Condensers and Heat Exchangers," in EPRI Geothermal Conference and Yorkshop, Seminar Yorkbook (June 23...

Someah, K.

319

Energy efficient operation strategy design for the combined cooling, heating and power system.  

E-Print Network (OSTI)

??Combined cooling, heating and power (CCHP) systems are known as trigeneration systems, designed to provide electricity, cooling and heating simultaneously. The CCHP system has become… (more)

Liu, Mingxi

2012-01-01T23:59:59.000Z

320

Juan A. Blanco & Dave Flanders (University of British Columbia/Universidad Pblica de Navarra), Dale Littlejohn & Peter Robinson (Community Energy Association), David Dubois (Wood Waste to Rural Heat Project)  

E-Print Network (OSTI)

), Dale Littlejohn & Peter Robinson (Community Energy Association), David Dubois (Wood Waste to Rural Heat determine if forest biomass from wildfire abatement can sustainably fuel a district heating system #12...............................................................................................................11 3.1 The pros: multiple and multiplicative benefits of biomass heating systems..................11

Pedersen, Tom

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


321

Podhale (South Poland) geothermal district heating system  

Science Journals Connector (OSTI)

The search for geothermal resources in the Podhale Region began in the late 1980s. The Banska IG-1 well, drilled in 1981, served as the starting point for an expansion of those research activities. A geothermal pilot plant was put into operation in 1993. During that same year the company Geotermia Podhalanska (GP) was founded and the pilot project, including the first distribution network for 20 customers, was constructed. After the initial phase of project implementation from 1993 to 1995, during which a pilot plant was constructed and put into operation for demonstration purposes by the Polish Academy for Sciences using the first geothermal doublet (a production well in Banska Nizna and a reinjection well in Bialy Dunajec), and connection of 200 households through a small district heating network, the World Bank got involved in the geothermal district heating project. Since then, significant progress has been made, increasing the overall heat capacity and geothermal output as well as the service area to the City of Zakopane, approx. 14 km from the production wells. In November 2001 the first geothermal heat was delivered to customers in Zakopane.

Piotr Dlugosz

2003-01-01T23:59:59.000Z

322

Heat conduction in relativistic systems: alternatives and perspectives  

E-Print Network (OSTI)

The non-equilibrium thermodynamics of relativistic systems have a rich phenomenology. The simplest phenomenon in the class of dissipative processes is that of heat. This letter presents a brief summary of the efforts made to tackle the problem of relativistic heat conduction. In particular, we focus on the multi-fluid approach to relativistic dissipation.

C. S. Lopez-Monsalvo

2010-11-30T23:59:59.000Z

323

Topic 14. Retrofit and optimal operation of the building energy systems Performances of Low Temperature Radiant Heating Systems  

E-Print Network (OSTI)

panel system are given by its energy (the consumption of gas for heating, electricity for pumps Temperature Radiant Heating Systems Milorad Boji1*, Dragan Cvetkovi1 , Jasmina Skerli1 , Danijela Nikoli1, wall heating, floor heating, ceiling heating, EnergyPlus SUMMARY Low temperature heating panel systems

Paris-Sud XI, Université de

324

Economic Development Through Biomass Systems Integration in Central Florida: Final Report; May 5, 1995  

SciTech Connect

Reclaimed phosphate mined land in central Florida has been identified as an area with potential for growing biomass crops. Approximately 73,000 acres of land could be available for production. Additional research is needed to define the possibilities.

Stricker, J. A.; Smith, W. H.

2004-07-01T23:59:59.000Z

325

Technoeconomic Analysis and Life Cycle Assessment of an Integrated Biomass Gasification Combined Cycle System  

Science Journals Connector (OSTI)

A biomass gasification combined-cycle power plant, consisting of a low pressure...®...Economic analyses were then performed to determine the levelized cost of electricity. The economic viability and efficiency of...

M. K. Mann; P. L. Spath

1997-01-01T23:59:59.000Z

326

Heating mechanism affects equipartition in a binary granular system  

E-Print Network (OSTI)

Two species of particles in a binary granular system typically do not have the same mean kinetic energy, in contrast to the equipartition of energy required in equilibrium. We investigate the role of the heating mechanism in determining the extent of this non-equipartition of kinetic energy. In most experiments, different species of particle are unequally heated at the boundaries. We show by event-driven simulations that this differential heating at the boundary influences the level of non-equipartition even in the bulk of the system. This conclusion is fortified by studying a numerical model and a solvable stochastic model without spatial degrees of freedom. In both cases, even in the limit where heating events are rare compared to collisions, the effect of the heating mechanism persists.

Hong-Qiang Wang; Narayanan Menon

2007-10-19T23:59:59.000Z

327

Building America Webinar: Central Multifamily Water Heating Systems  

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

Hosted by DOE's Building America program, this webinar will focus on the effective use of central heat pump water heaters (HPWHs) and control systems to reduce the energy use in hot water distribution.

328

Active charge/passive discharge solar heating systems: thermal analysis  

SciTech Connect

The performance of active charge/passive discharge solar space-heating systems is analyzed. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage to room coupling.

Swisher, J.

1981-01-01T23:59:59.000Z

329

A Geothermal District-Heating System and Alternative Energy Research...  

Open Energy Info (EERE)

District-Heating System and Alternative Energy Research Park on the NM Tech Campus Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title A...

330

Parallel Condensing System As A Heat Sink For Power Plants  

E-Print Network (OSTI)

Conventional heat sink technologies of use the condenser/cooling tower arrangement or an air cooled condenser for condensing exhaust steam from steam turbines. Each of these two systems have certain advantages as well as disadvantages. This paper...

Akhtar, S. Z.

331

Split system CO2 heat pump water heaters  

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

Split-system-CO2-heat-pump-water-heaters- Sign In About | Careers | Contact | Investors | bpa.gov Search Policy & Reporting Expand Policy & Reporting EE Sectors Expand EE...

332

In situ conversion process utilizing a closed loop heating system  

DOE Patents (OSTI)

An in situ conversion system for producing hydrocarbons from a subsurface formation is described. The system includes a plurality of u-shaped wellbores in the formation. Piping is positioned in at least two of the u-shaped wellbores. A fluid circulation system is coupled to the piping. The fluid circulation system is configured to circulate hot heat transfer fluid through at least a portion of the piping to form at least one heated portion of the formation. An electrical power supply is configured to provide electrical current to at least a portion of the piping located below an overburden in the formation to resistively heat at least a portion of the piping. Heat transfers from the piping to the formation.

Sandberg, Chester Ledlie (Palo Alto, CA); Fowler, Thomas David (Houston, TX); Vinegar, Harold J. (Bellaire, TX); Schoeber, Willen Jan Antoon Henri (Houston, TX)

2009-08-18T23:59:59.000Z

333

Reduce Natural Gas Use in Your Industrial Process Heating Systems  

SciTech Connect

This DOE Industrial Program fact sheet describes ten effective ways to save energy and money in industrial process heating systems by making some changes in equipment, operations, and maintenance.

Not Available

2007-09-01T23:59:59.000Z

334

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission...  

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

study heat extraction from hot porous systems by injection of cold CO 2 . * Reactive chemistry experiments for CO 2 -brine-rock are being assembled (INL). 6 | US DOE Geothermal...

335

Solar heating system installed at Jackson, Tennessee. Final report  

SciTech Connect

The solar energy heating system installed at the Coca-Cola Bottling Works in Jackson, Tennessee is described. The system consists of 9480 square feet of Owens-Illinois evacuated tubular solar collectors with attached specular cylindrical reflectors and will provide space heating for the 70,000 square foot production building in the winter, and hot water for the bottle washing equipment the remainder of the year. Component specifications and engineering drawings are included. (WHK)

None

1980-10-01T23:59:59.000Z

336

Analysis of a solar assisted heat pump system for indoor swimming pool water and space heating  

Science Journals Connector (OSTI)

Solar energy application is a good alternative to replace primary energy source especially for large-scale installations. Heat pumps are also effective means to reduce primary energy consumption. This paper describes a case study with a new design of solar assisted heat pump (SAHP) for indoor swimming pool space- and water-heating purposes. The system design procedure was first presented. The entire system was then modeled via the TRNSYS simulation environment and the energy performance was evaluated based on the winter time operation schedule. Economic analysis with a range of collector areas was also performed. The simulation results show that the overall system COP can reach 4.5, and the fractional factor of energy saving is 79% as compared to the conventional energy system. The economical payback period is less than 5 years.

T.T. Chow; Y. Bai; K.F. Fong; Z. Lin

2012-01-01T23:59:59.000Z

337

Biogas and Biomass to Energy Grant Program | Department of Energy  

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

Biogas and Biomass to Energy Grant Program Biogas and Biomass to Energy Grant Program Biogas and Biomass to Energy Grant Program < Back Eligibility Agricultural Commercial Industrial Institutional Local Government Nonprofit Residential Schools State Government Savings Category Bioenergy Commercial Heating & Cooling Manufacturing Buying & Making Electricity Energy Sources Maximum Rebate Feasibility Studies: $2,500 Biogas to Energy Systems: $225,000 Biomass to Energy Systems: $500,000 Program Info Start Date 12/16/1997 State Illinois Program Type State Grant Program Rebate Amount Up to 50% of project cost Provider University of Illinois at Chicago '''The most recent application period closed April 30, 2012. Check the program web site for updates on future solicitations. ''' The Renewable Energy Resources Program (RERP) promotes the development of

338

New energy and exergy parameters for geothermal district heating systems  

Science Journals Connector (OSTI)

This paper introduces four new parameters, namely energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio, and exergetic reinjection ratio for geothermal district energy systems. These parameters are applied to Edremit Geothermal District Heating System (GDHS) in Balikesir, Turkey for daily, monthly and yearly assessments and their variations are studied. In addition, the actual data are regressed to obtain some applied correlations for practical use. Some results follow: (i) Both energetic and exergetic renewability ratios decrease with decreasing temperature in heating season and increasing temperature in the summer. (ii) Both energetic and exergetic reinjection ratios increase with decreasing temperature for heating season and increase with increasing temperature for summer season.

C. Coskun; Zuhal Oktay; I. Dincer

2009-01-01T23:59:59.000Z

339

Solar-assisted heat pump – A sustainable system for low-temperature water heating applications  

Science Journals Connector (OSTI)

Abstract Direct expansion solar assisted heat pump systems (DX-SAHP) have been widely used in many applications including water heating. In the DX-SAHP systems the solar collector and the heat pump evaporator are integrated into a single unit in order to transfer the solar energy to the refrigerant. The present work is aimed at studying the use of the DX-SAHP for low temperature water heating applications. The novel aspect of this paper involves a detailed long-term thermo-economic analysis of the energy conservation potential and economic viability of these systems. The thermal performance is simulated using a computer program that incorporates location dependent radiation, collector, economic, heat pump and load data. The economic analysis is performed using the life cycle cost (LCC) method. Results indicate that the DX-SAHP water heaters systems when compared to the conventional electrical water heaters are both economical as well as energy conserving. The analysis also reveals that the minimum value of the system life cycle cost is achieved at optimal values of the solar collector area as well as the compressor displacement capacity. Since the cost of SAHP system presents a barrier to mass scale commercialization, the results of the present study indicating that the SAHP life cycle cost can be minimized by optimizing the collector area would certainly be helpful in lowering, if not eliminating, the economic barrier to these systems. Also, at load temperatures higher than 70 °C, the performance of the single stage heat pump degrades to the extent that its cost and efficiency advantages over the electric only system are lost.

S.K. Chaturvedi; V.D. Gagrani; T.M. Abdel-Salam

2014-01-01T23:59:59.000Z

340

AN OPTIMIZED TWO-CAPACITY ADVANCED ELECTRIC HEAT PUMP S. E. Veyo, Manager, Heat Exchange Systems Research  

E-Print Network (OSTI)

#12;AN OPTIMIZED TWO-CAPACITY ADVANCED ELECTRIC HEAT PUMP S. E. Veyo S. E. Veyo, Manager, Heat Exchange Systems Research Westinghouse Electric Corporation, R&D Center 1310 Beulah Road Pittsburgh, PA 15235 KEYWORDS: heat pump, air conditioner, electric, residential, energy, compressor, fan, blower, heat

Oak Ridge National Laboratory

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


341

California Biomass Collaborative Energy Cost Calculators | Open Energy  

Open Energy Info (EERE)

California Biomass Collaborative Energy Cost Calculators California Biomass Collaborative Energy Cost Calculators Jump to: navigation, search Tool Summary Name: California Biomass Collaborative Energy Cost Calculators Agency/Company /Organization: California Biomass Collaborative Partner: Department of Biological and Agricultural Engineering, University of California Sector: Energy Focus Area: Biomass, - Biofuels, - Landfill Gas, - Waste to Energy Phase: Evaluate Options Resource Type: Software/modeling tools User Interface: Spreadsheet Website: biomass.ucdavis.edu/calculator.html Locality: California Cost: Free Provides energy cost and financial assessment tools for biomass power, bio gas, biomass combined heat and power, and landfill gas. Overview The California Biomass Collaborative provides energy cost and financial

342

Property:Heat Recovery Systems | Open Energy Information  

Open Energy Info (EERE)

Systems Systems Jump to: navigation, search Property Name Heat Recovery Systems Property Type Page Description Distributed Data heat recovery systems Pages using the property "Heat Recovery Systems" Showing 25 pages using this property. (previous 25) (next 25) C Capstone C30 + Unifin + Capstone C60 + Unifin HX + D Distributed Generation Study/10 West 66th Street Corp + Built-in + Distributed Generation Study/615 kW Waukesha Packaged System + Sondex PHE-Type SL140-TM-EE-190 +, Sondex PHE-Type SL140-TM-EE-150 +, Cain UTR1-810A17.5SSP + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Built-in + Distributed Generation Study/Arrow Linen + Built-in + Distributed Generation Study/Dakota Station (Minnegasco) + Unifin + Distributed Generation Study/Elgin Community College + Beaird Maxim Model TRP-12 +

343

Driving on Biomass  

Science Journals Connector (OSTI)

...Research Increasing supplies of biodiesel is one priority for future...research. However, production of biodiesel from temperate oilseed crops...systems, perhaps including algae or thermochemical conversion...biomass either for burning or for biodiesel production. Reducing leaf...

John Ohlrogge; Doug Allen; Bill Berguson; Dean DellaPenna; Yair Shachar-Hill; Sten Stymne

2009-05-22T23:59:59.000Z

344

Overview of Biomass Combustion  

Science Journals Connector (OSTI)

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

T. Nussbaumer; J. E. Hustad

1997-01-01T23:59:59.000Z

345

Pool heating system on island brings year-round enjoyment  

SciTech Connect

The Bahamas is not generally thought of as a place in need of pool heating. However, the remote Bahamian island of Treasure Cay is actually situated north of Ft. Lauderdale, Florida. Pool temperatures drop during the winter, thus shortening the swimming season. The Beach Villas Homeowners Association of Treasure Cay investigated pool-heating options some time ago. Energy on Treasure Cay is expensive - about 25 cents/kWh - making cost a major concern for the association as they evaluated their choices. An electric heat pump was rule out as it would place too great a burden on the electricity load of the remote island. Heating the pool with propane gas was deemed far too costly. After evaluating each of these heating methods on the basis of economics, energy efficiency, and comfort, the association concluded that solar would be the best method. They selected a solar pool heating system manufactured by FAFCO, Inc. and installed by SUNWORKS in Ft. Lauderdale. The system requires virtually no daily maintenance, and there have been no problems with the system since its installation. In addition to being trouble-free, the FAFCO solar pool heater has saved Treasure Cay a great deal of money. The equipment cost about $9,500; lumber, PVC, and labor brought the total cost to $13,000. By comparison, a propane-gas system would have cost $4,000 but would have generated a yearly gas bill of $12,000. Therefore, payback on the system began immediately upon installation.

Not Available

1993-01-01T23:59:59.000Z

346

Thermal Hydraulic Optimization of Nuclear Systems [Heat Transfer and Fluid  

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

Thermal Hydraulic Thermal Hydraulic Optimization of Nuclear Systems Capabilities Engineering Computation and Design Engineering and Structural Mechanics Systems/Component Design, Engineering and Drafting Heat Transfer and Fluid Mechanics Overview Thermal Hydraulic Optimization of Nuclear Systems Underhood Thermal Management Combustion Simulations Advanced Model and Methodology Development Multi-physics Reactor Performance and Safety Simulations Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Heat Transfer and Fluid Mechanics Bookmark and Share Thermal Hydraulic Optimization of Nuclear Systems Accelerator Driven Test Facility Target Accelerator Driven Test Facility Target. Click on image to view larger

347

Guide to Combined Heat and Power Systems for Boiler Owners and...  

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

Combined Heat and Power Systems for Boiler Owners and Operators Guide to Combined Heat and Power Systems for Boiler Owners and Operators This guide presents useful information for...

348

Foundation heat exchangers for residential ground source heat pump systems Numerical modeling and experimental validation  

SciTech Connect

A new type of ground heat exchanger that utilizes the excavation often made for basements or foundations has been proposed as an alternative to conventional ground heat exchangers. This article describes a numerical model that can be used to size these foundation heat exchanger (FHX) systems. The numerical model is a two-dimensional finite-volume model that considers a wide variety of factors, such as soil freezing and evapotranspiration. The FHX numerical model is validated with one year of experimental data collected at an experimental house located near Oak Ridge, Tennessee. The model shows good agreement with the experimental data-heat pump entering fluid temperatures typically within 1 C (1.8 F) - with minor discrepancies due to approximations, such as constant moisture content throughout the year, uniform evapotranspiration over the seasons, and lack of ground shading in the model.

Xing, Lu [Oklahoma State University; Cullin, James [Oklahoma State University; Spitler, Jeffery [Oklahoma State University; Im, Piljae [ORNL; Fisher, Daniel [Oklahoma State University

2011-01-01T23:59:59.000Z

349

Biothermal gasification of biomass  

SciTech Connect

The BIOTHERMGAS Process is described for conversion of biomass, organic residues, and peat to substitute natural gas (SNG). This new process, under development at IGT, combines biological and thermal processes for total conversion of a broad variety of organic feeds (regardless of water or nutrient content). The process employs thermal gasification for conversion of refractory digester residues. Ammonia and other inorganic nutrients are recycled from the thermal process effluent to the bioconversion unit. Biomethanation and catalytic methanation are presented as alternative processes for methanation of thermal conversion product gases. Waste heat from the thermal component is used to supply the digester heat requirements of the bioconversion component. The results of a preliminary systems analysis of three possible applications of this process are presented: (1) 10,000 ton/day Bermuda grass plant with catalytic methanation; (2) 10,000 ton/day Bermuda grass plant with biomethanation; and (3) 1000 ton/day municipal solid waste (MSW) sewage sludge plant with biomethanation. The results indicate that for these examples, performance is superior to that expected for biological or thermal processes used separately. The results of laboratory studies presented suggest that effective conversion of thermal product gases can be accomplished by biomethanation.

Chynoweth, D.P.; Srivastava, V.J.; Henry, M.P.; Tarman, P.B.

1980-01-01T23:59:59.000Z

350

A Waste Heat Recovery System for Light Duty Diesel Engines  

SciTech Connect

In order to achieve proposed fuel economy requirements, engines must make better use of the available fuel energy. Regardless of how efficient the engine is, there will still be a significant fraction of the fuel energy that is rejected in the exhaust and coolant streams. One viable technology for recovering this waste heat is an Organic Rankine Cycle. This cycle heats a working fluid using these heat streams and expands the fluid through a turbine to produce shaft power. The present work was the development of such a system applied to a light duty diesel engine. This lab demonstration was designed to maximize the peak brake thermal efficiency of the engine, and the combined system achieved an efficiency of 44.4%. The design of the system is discussed, as are the experimental performance results. The system potential at typical operating conditions was evaluated to determine the practicality of installing such a system in a vehicle.

Briggs, Thomas E [ORNL; Wagner, Robert M [ORNL; Edwards, Kevin Dean [ORNL; Curran, Scott [ORNL; Nafziger, Eric J [ORNL

2010-01-01T23:59:59.000Z

351

Solar Water Heating System Maintenance and Repair | Department of Energy  

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

Water Heating System Maintenance and Repair Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair May 30, 2012 - 2:35pm Addthis Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | Photo from iStockphoto.com Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | Photo from iStockphoto.com Solar energy systems require periodic inspections and routine maintenance to keep them operating efficiently. Also, from time to time, components may need repair or replacement. You should also take steps to prevent scaling, corrosion, and freezing. You might be able to handle some of the inspections and maintenance tasks on your own, but others may require a qualified technician. Ask for a cost estimate in writing before having any work done. For some systems, it may

352

Using CORE Model-Based Systems Engineering Software to Support Program Management in the U.S. Department of Energy Office of the Biomass Project: Preprint  

SciTech Connect

This paper describes how a model-based systems engineering software, CORE, is helping the U. S. Department of Energy's Office of Biomass Program assist with bringing biomass-derived biofuels to the market. This software tool provides information to guide informed decision-making as biomass-to-biofuels systems are advanced from concept to commercial adoption. It facilitates management and communication of program status by automatically generating custom reports, Gantt charts, and tables using the widely available programs of Microsoft Word, Project and Excel.

Riley, C.; Sandor, D.; Simpkins, P.

2006-11-01T23:59:59.000Z

353

AGCO Biomass Solutions: Biomass 2014 Presentation  

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

Plenary IV: Advances in Bioenergy Feedstocks—From Field to Fuel AGCO Biomass Solutions: Biomass 2014 Presentation Glenn Farris, Marketing Manager Biomass, AGCO Corporation

354

On flow and supply temperature control in district heating systems  

Science Journals Connector (OSTI)

This paper discusses how the control of the flow and the supply temperature in district heating systems can be optimized, utilizing stochastic modelling, prediction and control methods. The main objective is to reduce heat production costs and heat losses in the transmission and distribution net by minimizing the supply temperature at the district heating plant. This control strategy is reasonable, in particular, if the heat production takes place at a combined heat and power (CHP) plant. The control strategy is subject to some restrictions, e.g. that the total heat requirement for all consumers is supplied at any time, and each individual consumer is guaranteed some minimum supply temperature at any time. Another important restriction is that the variation in time of the supply temperature is kept as small as possible. This concept has been incorporated in the program package, PRESS, developed at the Technical University of Denmark. PRESS has been applied and tested, e.g. at Vestkraft in Esbjerg, Denmark, and significant saving potentials have been documented. PRESS is now distributed by the Danish District Heating Association.

Henrik Madsen; Ken Sejling; Henning T. Søgaard; Olafur P. Palsson

1994-01-01T23:59:59.000Z

355

Simulation Models for Improved Water Heating Systems  

E-Print Network (OSTI)

distribution (in multi-family buildings); efficiency (eithercentral systems in multi- family buildings are assigned a54 °C (130 °F) for multi-family buildings that have central

Lutz, Jim

2014-01-01T23:59:59.000Z

356

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

sensors and control valves used in our generalized experimental system. The experimental solarsensors are remotely located at critical (in terms of decision-making) locations in the solar

Dols, C.

2010-01-01T23:59:59.000Z

357

Simulation and analysis of district-heating and -cooling systems  

SciTech Connect

A computer simulation model, GEOCITY, was developed to study the design and economics of district heating and cooling systems. GEOCITY calculates the cost of district heating based on climate, population, energy source, and financing conditions. The principal input variables are minimum temperature, heating degree-days, population size and density, energy supply temperature and distance from load center, and the interest rate. For district cooling, maximum temperature and cooling degree-hours are required. From this input data the model designs the fluid transport and district heating systems. From this design, GEOCITY calculates the capital and operating costs for the entire system. GEOCITY was originally developed to simulate geothermal district heating systems and thus, in addition to the fluid transport and distribution models, it includes a reservoir model to simulate the production of geothermal energy from geothermal reservoirs. The reservoir model can be adapted to simulate the supply of hot water from any other energy source. GEOCITY has been used extensively and has been validated against other design and cost studies. GEOCITY designs the fluid transport and distribution facilities and then calculates the capital and operating costs for the entire system. GEOCITY can simulate nearly any financial and tax structure through varying the rates of return on equity and debt, the debt-equity ratios, and tax rates. Both private and municipal utility systems can be simulated.

Bloomster, C.H.; Fassbender, L.L.

1983-03-01T23:59:59.000Z

358

Natural convection heat exchangers for solar water heating systems. Technical progress report, November 15, 1996--January 14, 1997  

SciTech Connect

The goals of this project are: (1) to develop guidelines for the design and use of thermosypohon side-arm heat exchangers in solar domestic water heating systems, and (2) to establish appropriate modeling and testing criteria for evaluating the performance of systems using this type of heat exchanger.

Davidson, J.H.

1998-06-01T23:59:59.000Z

359

Heat storage system utilizing phase change materials government rights  

DOE Patents (OSTI)

A thermal energy transport and storage system is provided which includes an evaporator containing a mixture of a first phase change material and a silica powder, and a condenser containing a second phase change material. The silica powder/PCM mixture absorbs heat energy from a source such as a solar collector such that the phase change material forms a vapor which is transported from the evaporator to the condenser, where the second phase change material melts and stores the heat energy, then releases the energy to an environmental space via a heat exchanger. The vapor is condensed to a liquid which is transported back to the evaporator. The system allows the repeated transfer of thermal energy using the heat of vaporization and condensation of the phase change material.

Salyer, Ival O. (Dayton, OH)

2000-09-12T23:59:59.000Z

360

Engineering of a high-throughput screening system to identify cellulosic biomass, pretreatments, and enzyme formulations that enhance sugar release  

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

Engineering Engineering of a High-Throughput Screening System to Identify Cellulosic Biomass, Pretreatments, and Enzyme Formulations That Enhance Sugar Release Michael H. Studer, Jaclyn D. DeMartini, Simone Brethauer, Heather L. McKenzie, Charles E. Wyman Chemical and Environmental Engineering Department, Center for Environmental Research and Technology, Bourns College of Engineering, University of California Riverside, 1084 Columbia Avenue, Riverside, California 92507; telephone: þ951-781-5791; fax: þ951-781-5790; e-mail: charles.wyman@ucr.edu Received 7 April 2009; revision received 21 August 2009; accepted 31 August 2009 Published online 3 September 2009 in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/bit.22527 ABSTRACT: The recalcitrance of cellulosic biomass, the only abundant, sustainable feedstock for making liquid fuels, is a primary

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


361

Assessment of dynamic energy conversion systems for radioisotope heat sources  

SciTech Connect

The use of dynamic conversion systems to convert the heat generated in a 7500 W(t) 90 Sr radioisotopic heat source to electricity is examined. The systems studies were Stirling; Brayton Cycle; three organic Rankines (ORCs) (Barber-Nichols/ORMAT, Sundstrand, and TRW); and an organic Rankine plus thermoelectrics. The systems were ranked for a North Warning System mission using a Los Alamos Multiattribute Decision Theory code. Three different heat source designs were used: case I with a beginning of life (BOL) source temperature of 640 C, case II with a BOL source temperature of 745/sup 0/C, and case III with a BOL source temperature of 945/sup 0/C. The Stirling engine system was the top-ranked system of cases I and II, closely followed by the ORC systems in case I and ORC plus thermoelectrics in case II. The Brayton cycle system was top-ranked for case III, with the Stirling engine system a close second. The use of /sup 238/Pu in heat source sizes of 7500 W(t) was examined and found to be questionable because of cost and material availability and because of additional requirements for analysis of safeguards and critical mass.

Thayer, G.R.; Mangeng, C.A.

1985-06-01T23:59:59.000Z

362

Fuel cell system with combustor-heated reformer  

DOE Patents (OSTI)

A fuel cell system including a fuel reformer heated by a catalytic combustor fired by anode effluent and/or fuel from a liquid fuel supply providing fuel for the fuel cell. The combustor includes a vaporizer section heated by the combustor exhaust gases for vaporizing the fuel before feeding it into the combustor. Cathode effluent is used as the principle oxidant for the combustor.

Pettit, William Henry (Rochester, NY)

2000-01-01T23:59:59.000Z

363

Study of the Heating Load of a Manufactured Space with a Gas-fired Radiant Heating System  

E-Print Network (OSTI)

A thermal balance mathematics model of a manufactured space with a gas-fired radiant heating system is established to calculate the heating load. Computer programs are used to solve the model. Envelope internal surface temperatures under different...

Zheng, X.; Dong, Z.

2006-01-01T23:59:59.000Z

364

Effect of alumina nanoparticles in the fluid on heat transfer in double-pipe heat exchanger system  

Science Journals Connector (OSTI)

This study was performed to investigate the convective heat transfer coefficient of nanofluids made of several alumina ... transformer oil which flow through a double pipe heat exchanger system in the laminar flo...

Byung-Hee Chun; Hyun Uk Kang; Sung Hyun Kim

2008-09-01T23:59:59.000Z

365

Geothermal district heating system feasibility analysis, Thermopolis, Wyoming  

SciTech Connect

The purpose of this study is to determine the technical and economic feasibility of constructing and operating a district heating system to serve the residential, commercial, and public sectors in Thermopolis. The project geothermal resource assessment, based on reviews of existing information and data, indicated that substantial hot water resources likely exist in the Rose Dome region 10 miles northeast of Thermopolis, and with quantities capable of supporting the proposed geothermal uses. Preliminary engineering designs were developed to serve the space heating and hot water heating demands for buildings in the Thermopolis-East Thermopolis town service area. The heating district design is based on indirect geothermal heat supply and includes production wells, transmission lines, heat exchanger units, and the closed loop distribution and collection system necessary to serve the individual customers. Three options are presented for disposal of the cooled waters-reinjection, river disposal, and agricultural reuse. The preliminary engineering effort indicates the proposed system is technically feasible. The design is sized to serve 1545 residences, 190 businesses, and 24 public buildings. The peak design meets a demand of 128.2 million Btu at production rates of 6400 gpm.

Goering, S.W.; Garing, K.L.; Coury, G.; Mickley, M.C.

1982-04-26T23:59:59.000Z

366

Emissions and Heat Transfer in Combustion Systems  

Science Journals Connector (OSTI)

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

Y. Daisho

1993-01-01T23:59:59.000Z

367

Combined Heat and Power (CHP) Systems  

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

The CHP systems program aimed to facilitate acceptance of distributed energy in end-use sectors by forming partnerships with industry consortia in the commercial building, merchant stores, light...

368

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

Solar Energy Society Meeting, Los Angeles, California, Julysolar in- solation measuring stations in northern and central California (California 94720 August 1975 A control system is being developed that will be capable of operating solar

Dols, C.

2010-01-01T23:59:59.000Z

369

The Pacific Northwest National Laboratory delivers financially attractive systems that use biomass to produce industrial and consumer products.  

E-Print Network (OSTI)

biomass to produce industrial and consumer products. While biomass holds potential for a ready supply from biomass--has stymied government and industry alike. The U.S. Department of Energy's Pacific to using biomass. Our research is focused on producing high-value bioproducts, such as chemicals

370

APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO  

E-Print Network (OSTI)

APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. By MAHADEVAN PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. Thesis Approved cannot find enough words to thank my father, H. Ramamoorthy, my mother, R. Devasena, and my brother

371

Advanced system demonstration for utilization of biomass as an energy source  

SciTech Connect

The results of a 20 month study to explore the technical and economic feasibility of fuelwood utilization to operate a 50 megawatt energy conversion facility are described. The availability of biomass as a fuel source, the methods of harvesting and collecting the fuelstock, the costs of providing adequate fuel to the plant, and other requirements for fueling the proposed conversion facility are investigated. (MHR)

Not Available

1980-10-01T23:59:59.000Z

372

Experimental investigation on system with combination of ground-source heat pump and solar collector  

Science Journals Connector (OSTI)

This paper presents the heating performance and energy distribution of a system with the combination of ground-source heat pump and solar collector or a solar-assisted ground-source heat pump system (SAGSHPS) by ...

Tao Hu ? ?; Jialing Zhu ???; Wei Zhang ? ?

2013-06-01T23:59:59.000Z

373

Heat-activated cooling devices: A guidebook for general audiences  

SciTech Connect

Heat-activated cooling is refrigeration or air conditioning driven by heat instead of electricity. A mill or processing facility can us its waste fuel to air condition its offices or plant; using waste fuel in this way can save money. The four basic types of heat-activated cooling systems available today are absorption cycle, desiccant system, steam jet ejector, and steam turbine drive. Each is discussed, along with cool storage and biomass boilers. Steps in determining the feasibility of heat-activated cooling are discussed, as are biomass conversion, system cost and integration, permits, and contractor selection. Case studies are given.

Wiltsee, G.

1994-02-01T23:59:59.000Z

374

Lamp system for uniform semiconductor wafer heating  

DOE Patents (OSTI)

A lamp system with a very soft high-intensity output is provided over a large area by water cooling a long-arc lamp inside a diffuse reflector of polytetrafluorethylene (PTFE) and titanium dioxide (TiO.sub.2) white pigment. The water is kept clean and pure by a one micron particulate filter and an activated charcoal/ultraviolet irradiation system that circulates and de-ionizes and biologically sterilizes the coolant water at all times, even when the long-arc lamp is off.

Zapata, Luis E. (Livermore, CA); Hackel, Lloyd (Livermore, CA)

2001-01-01T23:59:59.000Z

375

Sustainable use of California biomass resources can help meet state and national bioenergy targets  

E-Print Network (OSTI)

power plant. and pyrolysis of biomass by heating underpyrolysis oils) Producer gas Synthesis gas (syngas) Substitute natural gas (SNG) Hydrogen Biochemical Biosolids Physiochemical Densified biomass

Jenkins, Bryan M; Williams, Robert B; Gildart, Martha C; Kaffka, Stephen R.; Hartsough, Bruce; Dempster, Peter G

2009-01-01T23:59:59.000Z

376

IS DENSIFIED BIOMASS FUEL FROM AGRO-FORESTRY WASTE A SUSTAINABLE ENERGY OPTION?.  

E-Print Network (OSTI)

??Raw biomass material is bulky, high in void fraction, and very low in transportation efficiency. Furthermore, biomass dissipates quickly in harsh environments of high heat… (more)

Linnig, William A., III

2012-01-01T23:59:59.000Z

377

Geothermal heating system for the Children's Museum of Utah  

SciTech Connect

The results of a study to determine the engineering and economic feasibility of using the Wasatch Hot Spring resource for space heating of the Children's Library building are presented. The Wasatch Hot Spring with a reported flow of about 63 gpm (240 l/min) at an average temperature of 104/sup 0/F is not capable of furnishing the needed heat for the Children's Museum building. The underground paths along which the thermal waters flow to their outlets at the Warm Springs Fault are not presently known. It is possible if the thermal water ascends from the deep layers of the earth along the Warm Springs Fault that increased geothermal flow at a higher temperature can be produced by drilling into the fault. Assuming that sufficient geothermal fluid quantity is produced by drilling in the area, an analysis is made of a geothermal heating system for the building based on different fluid temperatures. It is assumed that the present and planned heating systems be left intact with the gas fired boilers taking over during cold periods when the geothermal system fails to provide sufficient heat. Economic analysis shows that the geothermal system is very attractive, even for the lowest geothermal fluid temperature considered (110/sup 0/F).

Karlsson, T.

1984-07-01T23:59:59.000Z

378

Composite quantum systems and environment-induced heating  

E-Print Network (OSTI)

In recent years, much attention has been paid to the development of techniques which transfer trapped particles to very low temperatures. Here we focus our attention on a heating mechanism which contributes to the finite temperature limit in laser sideband cooling experiments with trapped ions. It is emphasized that similar heating processes might be present in a variety of composite quantum systems whose components couple individually to different environments. For example, quantum optical heating effects might contribute significantly to the very high temperatures which occur during the collapse phase in sonoluminescence experiments. It might even be possible to design composite quantum systems, like atom-cavity systems, such that they continuously emit photons even in the absence of external driving.

Almut Beige; Andreas Kurcz; Adam Stokes

2011-10-07T23:59:59.000Z

379

Analysis of Organic Rankine Cycle for Low and Medium Grade Heat Source  

Science Journals Connector (OSTI)

Organic Rankine cycle (ORC) is an effective technique to generate power from low and medium temperature heat source, including industrial waste heat, solar heat, geothermal and biomass etc. Advantages of ORC are high efficiency, simple system, environment ... Keywords: organic Rankine cycle, new energy, waste heat recovery

Zhonghe Han; Yida Yu

2012-07-01T23:59:59.000Z

380

Waste heat recovery system for recapturing energy after engine aftertreatment systems  

SciTech Connect

The disclosure provides a waste heat recovery (WHR) system including a Rankine cycle (RC) subsystem for converting heat of exhaust gas from an internal combustion engine, and an internal combustion engine including the same. The WHR system includes an exhaust gas heat exchanger that is fluidly coupled downstream of an exhaust aftertreatment system and is adapted to transfer heat from the exhaust gas to a working fluid of the RC subsystem. An energy conversion device is fluidly coupled to the exhaust gas heat exchanger and is adapted to receive the vaporized working fluid and convert the energy of the transferred heat. The WHR system includes a control module adapted to control at least one parameter of the RC subsystem based on a detected aftertreatment event of a predetermined thermal management strategy of the aftertreatment system.

Ernst, Timothy C.; Nelson, Christopher R.

2014-06-17T23:59:59.000Z

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


381

VAPOR COMPRESSION HEAT PUMP SYSTEM FIELD TESTS AT THE TECH COMPLEX  

E-Print Network (OSTI)

323 CHAPTER 17 VAPOR COMPRESSION HEAT PUMP SYSTEM FIELD TESTS AT THE TECH COMPLEX \\B E Van D for several novel and conventional heat pump systems for space conditioning and water heating. Systems tested include the Annual Cycle Energy System (ACES), solar assisted heat pumps (SAHP) both parallel and series

Oak Ridge National Laboratory

382

Optimal Ground-Source Heat Pump System Design  

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

Project objectives: Develop a least-cost design tool (OptGSHP) that will enable GSHP developers to analyze system cost and performance in a variety of building applications to support both design, operational and purchase decisions. Integrate groundwater flow and heat transport into OptGSHP. Demonstrate the usefulness of OptGSHP and the significance of a systems approach to the design of GSHP systems.

383

BETTER DUCT SYSTEMS FOR HOME HEATING AND COOLING.  

SciTech Connect

This is a series of six guides intended to provide a working knowledge of residential heating and cooling duct systems, an understanding of the major issues concerning efficiency, comfort, health, and safety, and practical tips on installation and repair of duct systems. These guides are intended for use by contractors, system designers, advanced technicians, and other HVAC professionals. The first two guides are also intended to be accessible to the general reader.

ANDREWS,J.

2001-01-01T23:59:59.000Z

384

Advanced Burners and Combustion Controls for Industrial Heat Recovery Systems  

E-Print Network (OSTI)

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

Ferri, J. L.

385

Renewable energy of waste heat recovery system for automobiles  

Science Journals Connector (OSTI)

A system to recover waste heat comprised of eight thermoelectric generators (TEGs) to convert heat from the exhaust pipe of an automobile to electrical energy has been constructed. Simulations and experiments for the thermoelectric module in this system are undertaken to assess the feasibility of these applications. In order to estimate the temperature difference between thermoelectric elements a network of thermal resistors is constructed. The results assist in predicting power output of TEG module more precisely. Three configurations of heat sinks which are comprised of 10 22 and 44 fins are applied in this simulation. The results of the simulations show the average thermal resistance of these heat sinks in each section of the system with varied velocity of external flow. As the performance of a TEG module is influenced by an applied pressure through the effect of the thermal contact resistance we clamp the TE module to our experimental apparatus; the relation between power output and pressure applied in this case is presented. Besides simulations the system is designed and assembled. Measurements followed the connection of the system to the middle of an exhaust pipe. Through these simulations and experiments the power generated with a commercial TEG is presented. The results establish the fundamental development of materials that enhance the TEG efficiency for vehicles.

Cheng-Ting Hsu; Da-Jeng Yao; Ke-Jyun Ye; Ben Yu

2010-01-01T23:59:59.000Z

386

Removal of bisphenol A (BPA) in a nitrifying system with immobilized biomass  

Science Journals Connector (OSTI)

Abstract The potential for bisphenol A (BPA) removal by mixed consortia of immobilized microorganisms with high nitrification activity was investigated with BPA concentrations in the influent from 2.5 to 10.0 mg/L. The presence of BPA limited ammonium oxidation; nitrification efficiency decreased from 91.2 ± 1.3% in the control series to 47.4 ± 9.4% when BPA concentration in wastewater was the highest. The efficiency of BPA removal rose from 87.1 ± 5.5% to 92.9 ± 2.9% with increased BPA concentration in the influent. Measurement of oxygen uptake rates by biomass exposed to BPA showed that BPA was mainly removed by heterotrophic bacteria. A strong negative correlation between the BPA removal efficiency and nitrification efficiency indicated the limited contribution of ammonia-oxidizing bacteria (AOB) to BPA biodegradation. Exposure of biomass to BPA changed the quantity and diversity of AOB in the biomass as shown by real-time PCR and denaturing gradient gel electrophoresis.

Magdalena Zieli?ska; Agnieszka Cydzik-Kwiatkowska; Katarzyna Bernat; Katarzyna Bu?kowska; Irena Wojnowska-Bary?a

2014-01-01T23:59:59.000Z

387

Hybrid sodium heat pipe receivers for dish/Stirling systems  

SciTech Connect

The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

Laing, D.; Reusch, M. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V., Stuttgart (Germany). Inst. fuer Technische Thermodynamik

1997-12-31T23:59:59.000Z

388

Thermally conductive cementitious grout for geothermal heat pump systems  

DOE Patents (OSTI)

A thermally conductive cement-sand grout for use with a geothermal heat pump system. The cement sand grout contains cement, silica sand, a superplasticizer, water and optionally bentonite. The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity. In addition, the cement-sand grouts of the present invention also provide improved bond strengths and decreased permeabilities. The cement-sand grouts can also contain blast furnace slag, fly ash, a thermoplastic air entraining agent, latex, a shrinkage reducing admixture, calcium oxide and combinations thereof.

Allan, Marita (Old Field, NY)

2001-01-01T23:59:59.000Z

389

List of Biomass Incentives | Open Energy Information  

Open Energy Info (EERE)

Incentives Incentives Jump to: navigation, search The following contains the list of 757 Biomass Incentives. CSV (rows 1-500) CSV (rows 501-757) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active APS - Net Metering (Arizona) Net Metering Arizona Commercial Industrial Residential Nonprofit Schools Local Government State Government Fed. Government Agricultural Institutional Solar Thermal Electric Photovoltaics Wind energy Biomass No APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat

390

Design of a Heating System with Geothermal Energy and CO2 Capture:.  

E-Print Network (OSTI)

??Heating constitutes about 40% of the final energy consumption at TU Delft. In the present, the district heating system in campus obtains its energy from… (more)

Reyes Lastiri, D.

2013-01-01T23:59:59.000Z

391

Thermal and economical analysis of an underground seasonal storage heating system in Thrace  

Science Journals Connector (OSTI)

Economical analysis of the solar heating system with seasonal storage, which was established in Edirne (41°39?54?N) in order to provide the heat requirement of buildings, has been fulfilled. Optimum collector area for the heating system has been determined. Total heat requirement of 69% has been met by means of heating system concerning the space heating and domestic water heating. In the accordance with the results of the economical analysis, the payback time of the heating system has been determined as 19–20 years.

Berrin Karacavus; Ahmet Can

2009-01-01T23:59:59.000Z

392

Open-Cycle Vapor Compression Heat Pump System  

E-Print Network (OSTI)

to the desired pressure level for process use. The compressor is driven by a gas turbine or gas engine prime mover. To enhance the system performance, the prime mover exhaust and/or cooling jacket heat is recovered to generate additional process steam or hot...

Pasquinelli, D. M.; Becker, F. E.

1983-01-01T23:59:59.000Z

393

Marketing the Klamath Falls Geothermal District Heating system  

SciTech Connect

The Klamath Falls Geothermal District Heating system was completed in 1981 and, until 1992, there was no formal marketing plan for the system. This lack of marketing and the system history of poor availability combined to reduce or eliminate interest in connecting on the part of local building owners and it served only the original 14 government buildings connected at start up. The revenue from these buildings, however, did not cover the entire cost of operating the system. As a result, the city was faced with a difficult decision - develop the revenue required to make the system self-supporting or shut it down. As a result, a marketing strategy for the system was developed. A flat rate was developed in which the rate is negotiable, but for most customers approximates 50% of the gas bill. In addition, the flat rate reduced customer retrofit costs because it is not necessary to buy a meter. Finally, the flat rate is a guaranteed value for the first 10 years of the contract. To reduce retrofit costs, the new marketing plan eliminates the requirement for a customer heat exchanger. New customers are now connected directly into the distribution system with district loop water used as the building heating medium. The state operates two programs which have been used in the marketing plan. The first of these is available only to taxable entities and is referred to as the Business Energy Tax Credit (BETC). This program offers business a 35% tax credit on the costs associated with connection to the geothermal district heat system (retrofit, design, permits, etc.). The second state program is the Small Energy Loan Program (SELP). This program will loan the entire cost of the energy project to the customer. The new marketing strategy for the Klamath Falls system has concentrated on offering the customer an attractive and easy to understand rate structure, reduced retrofit cost and complexity for this building along with an attractive package of financing and tax credits. 1 tab.

Rafferty, K. (Geo-Heat Center, Klamath Falls, OR (United States))

1993-08-01T23:59:59.000Z

394

NETL: Coal/Biomass Feed and Gasification  

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

Coal/Biomass Feed & Gasification Coal/Biomass Feed & Gasification Coal and Coal/Biomass to Liquids Coal/Biomass Feed and Gasification The Coal/Biomass Feed and Gasification Key Technology is advancing scientific knowledge of the production of liquid hydrocarbon fuels from coal and/or coal-biomass mixtures. Activities support research for handling and processing of coal/biomass mixtures, ensuring those mixtures are compatible with feed delivery systems, identifying potential impacts on downstream components, catalyst and reactor optimization, and characterizing the range of products and product quality. Active projects within the program portfolio include the following: Coal-biomass fuel preparation Development of Biomass-Infused Coal Briquettes for Co-Gasification Coal-biomass gasification modeling

395

Biomass Technology Basics | Department of Energy  

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

Biomass Technology Basics Biomass Technology Basics Biomass Technology Basics August 14, 2013 - 11:31am Addthis Photo of a pair of hands holding corn stover, the unused parts of harvested corn. There are many types of biomass-organic matter such as plants, residue from agriculture and forestry, and the organic component of municipal and industrial wastes-that can now be used to produce fuels, chemicals, and power. Wood has been used to provide heat for thousands of years. This flexibility has resulted in increased use of biomass technologies. According to the Energy Information Administration, 53% of all renewable energy consumed in the United States was biomass-based in 2007. Biomass technologies break down organic matter to release stored energy from the sun. The process used depends on the type of biomass and its

396

Biomass Technology Basics | Department of Energy  

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

Biomass Technology Basics Biomass Technology Basics Biomass Technology Basics August 14, 2013 - 11:31am Addthis Photo of a pair of hands holding corn stover, the unused parts of harvested corn. There are many types of biomass-organic matter such as plants, residue from agriculture and forestry, and the organic component of municipal and industrial wastes-that can now be used to produce fuels, chemicals, and power. Wood has been used to provide heat for thousands of years. This flexibility has resulted in increased use of biomass technologies. According to the Energy Information Administration, 53% of all renewable energy consumed in the United States was biomass-based in 2007. Biomass technologies break down organic matter to release stored energy from the sun. The process used depends on the type of biomass and its

397

Thermodynamic analysis of a geothermal district heating system  

Science Journals Connector (OSTI)

Thermoeconomic analysis is considered a useful tool for investigators in engineering and other disciplines due to its methodology based on the quantities exergy, cost, energy and mass. This study deals with an investigation of capital costs and thermodynamic losses for devices in the Balcova Geothermal District Heating Systems (BGDHS). Thermodynamic loss rate-to-capital cost ratios are used for components and the overall system, and a systematic correlation is found between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. This correlation may imply that devices in successful district heating system are configured so as to achieve an overall optimal design, by balancing the thermodynamic (exergy-based) and economic characteristics of the overall system and their devices. The results provide insights into the relations between thermodynamics and economics and help demonstrate the merits of exergy analysis.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2005-01-01T23:59:59.000Z

398

Solar passive ceiling system. Final report. [Passive solar heating system with venetian blind reflectors and latent heat storage in ceiling  

SciTech Connect

The construction of a 1200 square foot building, with full basement, built to be used as a branch library in a rural area is described. The primary heating source is a passive solar system consisting of a south facing window system. The system consists of: a set of windows located in the south facing wall only, composed of double glazed units; a set of reflectors mounted in each window which reflects sunlight up to the ceiling (the reflectors are similar to venetian blinds); a storage area in the ceiling which absorbs the heat from the reflected sunlight and stores it in foil salt pouches laid in the ceiling; and an automated curtain which automatically covers and uncovers the south facing window system. The system is totally passive and uses no blowers, pumps or other active types of heat distribution equipment. The building contains a basement which is normally not heated, and the north facing wall is bermed four feet high around the north side.

Schneider, A.R.

1980-01-01T23:59:59.000Z

399

A capital cost comparison of commercial ground-source heat pump systems  

SciTech Connect

The report provides a capital cost comparison of commercial ground source heat pump systems. The study includes groundwater systems, ground-coupled systems and hybrid systems.

Rafferty, K.

1994-06-01T23:59:59.000Z

400

Northeast regional biomass program. First quarter report, October--December 1993  

SciTech Connect

This progress report presents summaries of various projects which were in operation or being planned during this quarter period. Projects included testing the efficiency of using wood chips as fuel in heating systems, barriers to commercial development of wood pellet fuels, studies of more efficient and less polluting wood stoves, work on landfill gas utilization, directories of facilities using biomass fuels, surveys of biomass conversion processes to liquid fuels, for commercial development, etc.

NONE

1994-05-01T23:59:59.000Z

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


401

Combined heat and power systems for commercial buildings: investigating cost, emissions, and primary energy reduction based on system components.  

E-Print Network (OSTI)

?? Combined heat and power (CHP) systems produce electricity and useful heat from fuel. When power is produced near a building which consumes power, transmission… (more)

Smith, Amanda D.

2012-01-01T23:59:59.000Z

402

The Impact of Biomass Pretreatment on the Feasibility of Overseas Biomass Conversion to Fischer?Tropsch Products  

Science Journals Connector (OSTI)

The Impact of Biomass Pretreatment on the Feasibility of Overseas Biomass Conversion to Fischer?Tropsch Products ... One of the most promising options to produce transportation fuels from biomass is the so-called biomass-to-liquids (BtL) route, in which biomass is converted to syngas from which high-quality Fischer?Tropsch (FT) fuels are synthesized. ... Alternatively to converting biomass into liquids or coal-like material, new and dedicated feeding systems for biomass can be developed. ...

Robin W. R. Zwart; Harold Boerrigter; Abraham van der Drift

2006-08-29T23:59:59.000Z

403

Combined ICR heating antenna for ion separation systems  

SciTech Connect

A combination of one- and two-wave antennas (one and two turns of conductors around a plasma cylinder, respectively) is proposed. This combined antenna localizes an RF field within itself. It is shown that spent nuclear fuel processing systems based on ICR heating of nuclear ash by such a combined antenna have high productivity. A theory of the RF field excitation in ICR ion separation systems is presented in a simple and compact form.

Timofeev, A. V. [Russian Research Centre Kurchatov Institute (Russian Federation)

2011-01-15T23:59:59.000Z

404

Optimization of Heat Transfer Systems and Use of the Environmental Exergy Potential - Application to Compact Heat Exchangers and Heat Pumps.  

E-Print Network (OSTI)

??In this thesis, the optimization of forced convection heat sinks and groundwater-source heat pumps is addressed with the purpose of improving energy efficiency. Parallel ducts… (more)

Canhoto, Paulo

2012-01-01T23:59:59.000Z

405

Exergoeconomic analysis of geothermal district heating systems: A case study  

Science Journals Connector (OSTI)

An exergoeconomic study of geothermal district heating systems through mass, energy, exergy and cost accounting analyses is reported and a case study is presented for the Salihli geothermal district heating system (SGDHS) in Turkey to illustrate the present method. The relations between capital costs and thermodynamic losses for the system components are also investigated. Thermodynamic loss rate-to-capital cost ratios are used to show that, for the devices and the overall system, a systematic correlation appears to exist between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. Furthermore, a parametric study is conducted to determine how the ratio of thermodynamic loss rate to capital cost changes with reference temperature and to develop a correlation that can be used for practical analyses. The correlations may imply that devices in successful district heating systems such as the SGDHS are configured so as to achieve an overall optimal design, by appropriately balancing the thermodynamic (exergy-based) and economic (cost) characteristics of the overall systems and their devices.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer; Marc A. Rosen

2007-01-01T23:59:59.000Z

406

Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation  

E-Print Network (OSTI)

Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation been proposed to model thermoelectric generators (TEGs) for automotive waste heat recovery. Details: Thermoelectric generators, waste heat recovery, automotive exhaust, skutterudites INTRODUCTION In part I

Xu, Xianfan

407

Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part I: Numerical Modeling  

E-Print Network (OSTI)

Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part I: Numerical Modeling telluride TEMs. Key words: Thermoelectric generators, waste heat recovery, automotive exhaust, skutterudites bismuth telluride are considered for thermoelectric modules (TEMs) for conversion of waste heat from

Xu, Xianfan

408

Investigation of a Novel Solar Assisted Water Heating System with Enhanced Energy Yield for Buildings  

E-Print Network (OSTI)

simulation and experimental verification. The unique characteristic of such system consists in the integrated loop heat pipe and heat pump unit (LHP-HP), which was proposed to improve solar photovoltaic (PV) generation, capture additional solar heat...

Zhang, X.; Zhao, X.; Xu, J.; Yu, X.

2012-01-01T23:59:59.000Z

409

Analysis of recoverable waste heat of circulating cooling water in hot-stamping power system  

Science Journals Connector (OSTI)

This article studies the possibility of using heat pump instead of cooling tower to decrease temperature and recover waste heat of circulating cooling water of power system. Making use of heat transfer theory ......

Panpan Qin; Hui Chen; Lili Chen; Chong Wang…

2013-08-01T23:59:59.000Z

410

Investigating and Using Biomass Gases  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Students will be introduced to biomass gasification and will generate their own biomass gases. Students generate these everyday on their own and find it quite amusing, but this time they’ll do it by heating wood pellets or wood splints in a test tube. They will collect the resulting gases and use the gas to roast a marshmallow. Students will also evaluate which biomass fuel is the best according to their own criteria or by examining the volume of gas produced by each type of fuel.

411

A key review of wastewater source heat pump (WWSHP) systems  

Science Journals Connector (OSTI)

Abstract Heat pumps (HPs) are part of the environmentally friendly technologies using renewable energy and have been utilized in the developed countries for years. Wastewater is seen as a renewable heat source for HPs. At the beginning of the 1980s, waste (sewage) water source heat pumps (WWSHPs) were widely applied in North European countries like Sweden and Norway and partially applied in China. In the past two decades, the WWSHP has become increasingly popular due to its advantages of relatively higher energy utilization efficiency and environmental protection. The present study comprehensively reviews WWSHP systems in terms of applications and performance assessments including energetic, exergetic, environmental and economic aspects for the first time to the best of the authors’ knowledge. In this context, a historical development of \\{WWSHPs\\} was briefly given first. Next, wastewater potential and its characteristics were presented while a WWSHP system was introduced. The previously conducted studies on \\{WWSHPs\\} were then reviewed and classified in a tabulated form. Finally, some concluding remarks were listed. The COP values of the reviewed studies ranged from 1.77 to 10.63 for heating and 2.23 to 5.35 for cooling based on the experimental and simulated values. The performance assessments are mostly made using energy analysis methods while the number of exergetic evaluations is very low and has not been comprehensively performed. It is expected that the comprehensive review here will be very beneficial to those dealing with the design, analysis, simulation and performance assessment of WWSHP systems.

Arif Hepbasli; Emrah Biyik; Orhan Ekren; Huseyin Gunerhan; Mustafa Araz

2014-01-01T23:59:59.000Z

412

GROUND-COUPLED HEAT-PUMP-SYSTEM EXPERIMENTAL RESULTS* Philip D. Metz  

E-Print Network (OSTI)

#12;GROUND-COUPLED HEAT-PUMP-SYSTEM EXPERIMENTAL RESULTS* Philip D. Metz _Solar and Renewables house in Upton, Long Island, New York has been heated and cooled by a liquid source heat pump using- saving construction with a heating load of 7.8 X 106 J/OC-day (4.1 X 103 Btu/ OF-day). The heat pump used

Oak Ridge National Laboratory

413

Experimental Study on the Combustion Characteristics of Stalk Biomass Fuel  

Science Journals Connector (OSTI)

China is an agriculture country. Biomass resource will be up to 65 hundred ... average heating value is 15000kJ/kg, those biomass resources are equivalent to 33 hundred million ... double annual total energy cons...

Jian-xing Ren; Fang-qin Li; Qi-fen Li…

2007-01-01T23:59:59.000Z

414

Municipal water-based heat pump heating and/or cooling systems: Findings and recommendations. Final report  

SciTech Connect

The purpose of the present work was to determine if existing heat pump systems based on municipal water systems meet existing water quality standards, to analyze water that has passed through a heat pump or heat exchanger to determine if corrosion products can be detected, to determine residual chlorine levels in municipal waters on the inlet as well as the outlet side of such installations, to analyses for bacterial contaminants and/or regrowth due to the presence of a heat pump or heat exchanger, to develop and suggest criteria for system design and construction, to provide recommendations and specifications for material and fluid selection, and to develop model rules and regulations for the installation, operation, and monitoring of new and existing systems. In addition, the Washington State University (WSU) has evaluated availability of computer models that would allow for water system mapping, water quality modeling and system operation.

Bloomquist, R.G. [Washington, State Univ., Pullman, WA (United States); Wegman, S. [South Dakota Utilities Commission (United States)

1998-04-01T23:59:59.000Z

415

Combined Heat and Power (CHP) Systems | Department of Energy  

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

Technology Development » Smart Grid » Distributed Technology Development » Smart Grid » Distributed Energy » Combined Heat and Power (CHP) Systems Combined Heat and Power (CHP) Systems The CHP systems program aimed to facilitate acceptance of distributed energy in end-use sectors by forming partnerships with industry consortia in the commercial building, merchant stores, light industrial, supermarkets, restaurants, hospitality, health care and high-tech industries. In high-tech industries such as telecommunications, commercial data processing and internet services, the use of electronic data and signal processing have become a cornerstone in the U.S. economy. These industries represent high potential for CHP and distributed energy due to their ultra-high reliability and power quality requirements and related large

416

Inverse melting in a system with positive heats of formation  

SciTech Connect

Supersaturated body-centered-cubic Fe-W solid solutions with positive heats of formation were prepared by cosputtering and mechanical alloying over a wide concentration range. Upon annealing, these solid solutions were observed to undergo amorphization in the range of 20{endash}37 at.{percent} W. For Fe{sub 70}W{sub 30} and Fe{sub 67}W{sub 33} the transformation was polymorphous, indicating an inverse melting behavior. A thermodynamic analysis of the Fe-W system, which was carried out using the calculation-of-phase-diagrams method, supported that inverse melting is energetically possible in the Fe-W system. The results demonstrate that inverse melting can also occur in systems with positive heats of amorphous phase formation. {copyright} {ital 1997} {ital The American Physical Society}

Bai, H.Y.; Michaelsen, C.; Bormann, R. [Institute for Materials Research, GKSS-Research Center, Max-Planck-Strasse, D-21502 Geesthacht (Germany)] [Institute for Materials Research, GKSS-Research Center, Max-Planck-Strasse, D-21502 Geesthacht (Germany)

1997-11-01T23:59:59.000Z

417

Conventional and advanced exergoeconomic analyses of geothermal district heating systems  

Science Journals Connector (OSTI)

Abstract The present study deals with analyzing, assessing and comparing conventional and advanced exergoeconomic analyses to identify the direction and potential for energy savings of a geothermal district heating system in future conditions/projections. As a real case study, the Afyon geothermal district heating system in Afyonkarahisar, Turkey, is considered while its actual operational thermal data on 8 February 2011 are utilized in the analysis, which is based on the specific exergy costing method. In this study for the first time, based on the concepts of avoidable/unavoidable and endogenous/exogenous parts, cost rates associated with both exergy destruction and capital investment of the geothermal district heating system are determined first, and the obtained results are then evaluated. The results indicate that the internal design changes play a more essential role in determining the cost of each component. The cost rate of unavoidable part within the components of the system is lower than that of the avoidable one. For the overall system, the value for the conventional exergoeconomic factor is determined to be 5.53% while that for the modified one is calculated to be 9.49%. As a result, the advanced exergoeconomic analysis makes more sense given the additional information in splitting process of the components.

Ali Keçeba?; Arif Hepbasli

2014-01-01T23:59:59.000Z

418

ANALYSIS OF BIOMASS HARVEST, HANDLING, AND COMPUTER MODELING.  

E-Print Network (OSTI)

??Biomass materials are currently considered for use in direct combustion systems, and for value added products. The major roadblock associated with implementation of biomass into… (more)

Brownell, Douglas

2009-01-01T23:59:59.000Z

419

Enhancing geothermal heat pump systems with parametric performance analyses.  

E-Print Network (OSTI)

??Parametric performance analyses and comparison of a basic geothermal heat pump, a heat pump cycle with motor cooling/refrigerant preheating, and a heat pump cycle utilizing… (more)

Self, Stuart

2010-01-01T23:59:59.000Z

420

Biomass recycling and the origin of phenotype in fungal mycelia  

Science Journals Connector (OSTI)

...resource in each cell, the biomass conversion efficiency (gamma0.2...genotype In modelled systems where biomass conversion efficiency, gamma, is low...at each time step due to the biomass conversion efficiency parameter, but...

2005-01-01T23:59:59.000Z

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


421

COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM  

SciTech Connect

In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

Jiang Zhu; Yong X. Tao

2011-11-01T23:59:59.000Z

422

Materials, Turbomachinery and Heat Exchangers for Supercritical CO2 Systems  

SciTech Connect

The objective of this project is to produce the necessary data to evaluate the performance of the supercritical carbon dioxide cycle. The activities include a study of materials compatibility of various alloys at high temperatures, the heat transfer and pressure drop in compact heat exchanger units, and turbomachinery issues, primarily leakage rates through dynamic seals. This experimental work will serve as a test bed for model development and design calculations, and will help define further tests necessary to develop high-efficiency power conversion cycles for use on a variety of reactor designs, including the sodium fast reactor (SFR) and very high-temperature gas reactor (VHTR). The research will be broken into three separate tasks. The first task deals with the analysis of materials related to the high-temperature S-CO{sub 2} Brayton cycle. The most taxing materials issues with regard to the cycle are associated with the high temperatures in the reactor side heat exchanger and in the high-temperature turbine. The system could experience pressures as high as 20MPa and temperatures as high as 650°C. The second task deals with optimization of the heat exchangers required by the S-CO{sub 2} cycle; the S-CO{sub 2} flow passages in these heat exchangers are required whether the cycle is coupled with a VHTR or an SFR. At least three heat exchangers will be required: the pre-cooler before compression, the recuperator, and the heat exchanger that interfaces with the reactor coolant. Each of these heat exchangers is unique and must be optimized separately. The most challenging heat exchanger is likely the pre-cooler, as there is only about a 40°C temperature change but it operates close to the CO{sub 2} critical point, therefore inducing substantial changes in properties. The proposed research will focus on this most challenging component. The third task examines seal leakage through various dynamic seal designs under the conditions expected in the S-CO{sub 2} cycle, including supercritical, choked, and two-phase flow conditions.

Mark Anderson; Greg Nellis; Michael Corradini

2012-10-19T23:59:59.000Z

423

Ecological and Economical efficient Heating and Cooling by innovative Gas Motor Heat Pump Systems and Solutions  

E-Print Network (OSTI)

#12;Ecological and Economical efficient Heating and Cooling by innovative Gas Motor Heat Pump use of buildings Gas Heat Pump Solution #12;Gas Heat Pump - deserves special attention due to its source in addition to the outside air ·A further essential component of Gas Heat Pump air conditioning

Oak Ridge National Laboratory

424

System Modeling and Building Energy Simulations of Gas Engine Driven Heat Pump  

SciTech Connect

To improve the system performance of a gas engine driven heat pump (GHP) system, an analytical modeling and experimental study has been made by using desiccant system in cooling operation (particularly in high humidity operations) and suction line waste heat recovery to augment heating capacity and efficiency. The performance of overall GHP system has been simulated with a detailed vapor compression heat pump system design model. The modeling includes: (1) GHP cycle without any performance improvements (suction liquid heat exchange and heat recovery) as a baseline (both in cooling and heating mode), (2) the GHP cycle in cooling mode with desiccant system regenerated by waste heat from engine incorporated, (3) GHP cycle in heating mode with heat recovery (recovered heat from engine). According to the system modeling results, by using the desiccant system the sensible heat ratio (SHR- sensible heat ratio) can be lowered to 40%. The waste heat of the gas engine can boost the space heating efficiency by 25% at rated operating conditions. In addtion,using EnergyPlus, building energy simulations have been conducted to assess annual energy consumptions of GHP in sixteen US cities, and the performances are compared to a baseline unit, which has a electrically-driven air conditioner with the seasonal COP of 4.1 for space cooling and a gas funace with 90% fuel efficiency for space heating.

Mahderekal, Isaac [Oak Ridge National Laboratory (ORNL); Vineyard, Edward [Oak Ridge National Laboratory (ORNL)

2013-01-01T23:59:59.000Z

425

MFTF-B electron-cyclotron-resonance heating system  

SciTech Connect

The MFTF-B ECRH system will provide 1.6-MW of microwave power for heating of electrons within the thermal barrier and potential maximum regions of the plasma end-plugs. Absorption of this radiation increases the resonant electron energy which locally alters the electrostatic confining potential within the plasma. The result is a thermal barrier which will isolate end-plug electrons from those in the solenoid thus increasing the plasma confinement time. Microwave energy will be generated by eight 200 kW gyrotrons located outside the vacuum vessel at strategic positions near each end-plug. High voltage dc power will be obtained from a -90 kV, 90 A power supply. A compensation network will condition the dc power and channel it to eight independent pulse power regulatory/isolation networks. Each of these networks will, on command, provide -80 kV, 8 A of dc power to its attendant gyrotron cabinet positioned within the vault. Each gyrotron will interface to a quasi-optical waveguide which will transport microwave power to an antenna system located inside the vacuum vessel. The antenna systems will direct the microwave radiation into the resonant heating zones of the plasma. A local control and monitoring system will interface to the MFTF-B Supervisory Control and Diagnostics System. This will permit operation and monitoring of the entire ECRH system from either the central control room or the local control system.

Krause, K.H.; Pollock, G.G.; Yugo, J.J.

1981-10-22T23:59:59.000Z

426

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Solar Heating Biomass Conversion Wind . . . . Cogenerationdeveloped. The biomass for this conversion to fuels can beobtained from the conversion of this biomass. Biomass Waste

Authors, Various

2010-01-01T23:59:59.000Z

427

Mini-biomass electric generation  

SciTech Connect

Awareness of the living standards achieved by others has resulted in a Russian population which is yearning for a higher standard of living. Such a situation demands access to affordable electricity in remote areas. Remote energy requirements creates the need to transport power or fossil fuels over long distances. Application of local renewable energy resources could eliminate the need for and costs of long distance power supply. Vast forest resources spread over most of Russia make biomass an ideal renewable energy candidate for many off-grid villages. The primary objective for this preliminary evaluation is to examine the economic feasibility of replacing distillate and gasoline fuels with local waste biomass as the primary fuel for village energy in outlying regions of Russia. Approximately 20 million people live in regions where Russia`s Unified Electric System grid does not penetrate. Most of these people are connected to smaller independent power grids, but approximately 8 million Russians live in off-grid villages and small towns served by stand-alone generation systems using either diesel fuel or gasoline. The off-grid villages depend on expensive distillate fuels and gasoline for combustion in small boilers and engines. These fuels are used for both electricity generation and district heating. Typically, diesel generator systems with a capacity of up to 1 MW serve a collective farm, settlement and their rural enterprises (there are an estimated 10,000 such systems in Russia). Smaller gasoline-fueled generator systems with capacities in the range of 0.5 - 5 kW serve smaller farms or rural enterprises (there are about 60,000 such systems in Russia).

Elliot, G. [International Applied Engineering, Inc., Atlanta, GA (United States)

1997-12-01T23:59:59.000Z

428

Process for concentrated biomass saccharification  

DOE Patents (OSTI)

Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.

Hennessey, Susan M. (Avondale, PA); Seapan, Mayis (Landenberg, PA); Elander, Richard T. (Evergreen, CO); Tucker, Melvin P. (Lakewood, CO)

2010-10-05T23:59:59.000Z

429

Comparing exposure metrics for classifying ‘dangerous heat’ in heat wave and health warning systems  

Science Journals Connector (OSTI)

Heat waves have been linked to excess mortality and morbidity, and are projected to increase in frequency and intensity with a warming climate. This study compares exposure metrics to trigger heat wave and health warning systems (HHWS), and introduces a novel multi-level hybrid clustering method to identify potential dangerously hot days. Two-level and three-level hybrid clustering analysis as well as common indices used to trigger HHWS, including spatial synoptic classification (SSC), and the 90th, 95th, and 99th percentiles of minimum and relative minimum temperature (using a 10 day reference period), were calculated using a summertime weather dataset in Detroit from 1976 to 2006. The days classified as ‘hot’ with hybrid clustering analysis, SSC, minimum and relative minimum temperature methods differed by method type. SSC tended to include the days with, on average, 2.5 °C lower daily minimum temperature and 5.3 °C lower dew point than days identified by other methods. These metrics were evaluated by comparing their performance in predicting excess daily mortality. The 99th percentile of minimum temperature was generally the most predictive, followed by the three-level hybrid clustering method, the 95th percentile of minimum temperature, SSC and others. Our proposed clustering framework has more flexibility and requires less substantial meteorological prior information than the synoptic classification methods. Comparison of these metrics in predicting excess daily mortality suggests that metrics thought to better characterize physiological heat stress by considering several weather conditions simultaneously may not be the same metrics that are better at predicting heat-related mortality, which has significant implications in HHWSs.

Kai Zhang; Richard B. Rood; George Michailidis; Evan M. Oswald; Joel D. Schwartz; Antonella Zanobetti; Kristie L. Ebi; Marie S. O'Neill

2012-01-01T23:59:59.000Z

430

DANISHBIOETHANOLCONCEPT Biomass conversion for  

E-Print Network (OSTI)

DANISHBIOETHANOLCONCEPT Biomass conversion for transportation fuel Concept developed at RISÃ? and DTU Anne Belinda Thomsen (RISÃ?) Birgitte K. Ahring (DTU) #12;DANISHBIOETHANOLCONCEPT Biomass: Biogas #12;DANISHBIOETHANOLCONCEPT Pre-treatment Step Biomass is macerated The biomass is cut in small

431

Side by Side Testing of Water Heating Systems  

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

Florida Florida A Research Institute of the University of Central Florida Side by Side Testing of Water Heating Systems Residential Energy Efficiency Stakeholder Meeting Austin , Texas March 1st, 2012 Carlos J. Colon carlos@fsec.ucf.edu FLORIDA SOLAR ENERGY CENTER - A Research Institute of the University of Central Florida Hot Water Systems (HWS) Laboratory FSEC Cocoa, Florida 3 2009 -Present (Currently in third testing rotation) FLORIDA SOLAR ENERGY CENTER - A Research Institute of the University of Central Florida Underground Circulation Loop * Solar circulation Loop 140+ feet of ½" copper tubing * Encased in PVC tubing with R-2.4 insulation * ICS to 50 gallon storage tank path need to

432

WORKING PARK-FUEL CELL COMBINED HEAT AND POWER SYSTEM  

SciTech Connect

This report covers the aims and objectives of the project which was to design, install and operate a fuel cell combined heat and power (CHP) system in Woking Park, the first fuel cell CHP system in the United Kingdom. The report also covers the benefits that were expected to accrue from the work in an understanding of the full technology procurement process (including planning, design, installation, operation and maintenance), the economic and environmental performance in comparison with both conventional UK fuel supply and conventional CHP and the commercial viability of fuel cell CHP energy supply in the new deregulated energy markets.

Allan Jones

2003-09-01T23:59:59.000Z

433

Biomass shock pretreatment  

SciTech Connect

Methods and apparatus for treating biomass that may include introducing a biomass to a chamber; exposing the biomass in the chamber to a shock event to produce a shocked biomass; and transferring the shocked biomass from the chamber. In some aspects, the method may include pretreating the biomass with a chemical before introducing the biomass to the chamber and/or after transferring shocked biomass from the chamber.

Holtzapple, Mark T.; Madison, Maxine Jones; Ramirez, Rocio Sierra; Deimund, Mark A.; Falls, Matthew; Dunkelman, John J.

2014-07-01T23:59:59.000Z

434

Science Activities in Biomass  

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

Activities in Biomass Curriculum: Biomass Power (organic chemistry, genetics, distillation, agriculture, chemicalcarbon cycles, climatology, plants and energy resources...

435

Guide to Combined Heat and Power Systems for Boiler Owners and...  

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

Guide to Combined Heat and Power Systems for Boiler Owners and Operators, July 2004 Guide to Combined Heat and Power Systems for Boiler Owners and Operators, July 2004 Many owners...

436

Investigation of Latent-Heat Storage Systems for Green Building Applications  

Science Journals Connector (OSTI)

In green building applications, highest energy demands are needed for air conditioning to ... heat storage systems during the usage of solar energy and ground-sourced heat pump systems for ... period, analyses sh...

Devrim Aydin; Zafer Utlu; Olcay Kincay

2014-01-01T23:59:59.000Z

437

Question of the Week: What Kind of Heating System Do You Have...  

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

Kind of Heating System Do You Have in Your Home? Question of the Week: What Kind of Heating System Do You Have in Your Home? November 20, 2008 - 8:39am Addthis As we note on...

438

Combined Operation of Solar Energy Source Heat Pump, Low-vale Electricity and Floor Radiant System  

E-Print Network (OSTI)

solar energy, low-vale electricity as heat sources in a floor radiant system are analyzed. This paper presents a new heat pump system and discusses its operational modes in winter....

Liu, G.; Guo, Z.; Hu, S.

2006-01-01T23:59:59.000Z

439

The Simulation Research of Solar Assisted Heat Pump System with the Neutral Network  

Science Journals Connector (OSTI)

This paper mainly explores the simulation studies for SAHP system and takes the heating system as research object, sets up the heat pipe evacuated tubular collectors model with the neutral network. Based on th...

Wang Kai; Fan Bo; Zhang Yilin; Xia Qi

2009-01-01T23:59:59.000Z

440

Development and Application of Engineering-Scale Solar Water Heater System Assisted by Heat Pump  

Science Journals Connector (OSTI)

An engineering-scale solar water heater system assisted by heat pump was developed based on ... . The subunits of modularized system include vacuum solar energy collectors, air source heat pump, ... Energy source...

Xiufeng Gao; Shiyu Feng; Wei Hu…

2009-01-01T23:59:59.000Z

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


441

Process Waste Heat Recovery in the Food Industry - A System Analysis  

E-Print Network (OSTI)

An analysis of an industrial waste heat recovery system concept is discussed. For example purposes, a food processing plant operating an ammonia refrigeration system for storage and blast freezing is considered. Heat is withdrawn from...

Lundberg, W. L.; Mutone, G. A.

1983-01-01T23:59:59.000Z

442

Situ soil sampling probe system with heated transfer line  

DOE Patents (OSTI)

The present invention is directed both to an improved in situ penetrometer probe and to a heated, flexible transfer line. The line and probe may be implemented together in a penetrometer system in which the transfer line is used to connect the probe to a collector/analyzer at the surface. The probe comprises a heater that controls a temperature of a geologic medium surrounding the probe. At least one carrier gas port and vapor collection port are located on an external side wall of the probe. The carrier gas port provides a carrier gas into the geologic medium, and the collection port captures vapors from the geologic medium for analysis. In the transfer line, a flexible collection line that conveys a collected fluid, i.e., vapor, sample to a collector/analyzer. A flexible carrier gas line conveys a carrier gas to facilitate the collection of the sample. A system heating the collection line is also provided. Preferably the collection line is electrically conductive so that an electrical power source can generate a current through it so that the internal resistance generates heat.

Robbat, Jr., Albert (Andover, MA)

2002-01-01T23:59:59.000Z

443

RF heating systems evolution for the WEST project  

SciTech Connect

Tore Supra is dedicated to long pulse operation at high power, with a record in injected energy of 1 GJ (2.8 MW × 380 s) and an achieved capability of 12 MW injected power delivered by 3 RF systems: Lower Hybrid Current Drive (LHCD), Ion Cyclotron Resonance Heating (ICRH) and Electron Cyclotron Resonance Heating (ECRH). The new WEST project (W [tungsten] Environment in Steady-state Tokamak) aims at fitting Tore Supra with an actively cooled tungsten coated wall and a bulk tungsten divertor. This new device will offer to ITER a test bed for validating the relevant technologies for actively cooled metallic components, with D-shaped H-mode plasmas. For WEST operation, different scenarii able to reproduce ITER relevant conditions in terms of steady state heat loads have been identified, ranging from a high RF power scenario (15 MW, 30 s) to a high fluence scenario (10 MW, 1000 s). This paper will focus on the evolution of the RF systems required for WEST. For the ICRH system, the main issues are its ELM resilience and its CW compatibility, three new actively cooled antennas are being designed, with the aim of reducing their sensitivity to the load variations induced by ELMs. The LH system has been recently upgraded with new klystrons and the PAM antenna, the possible reshaping of the antenna mouths is presently studied for matching with the magnetic field line in the WEST configuration. For the ECRH system, the device for the poloidal movement of the mirrors of the antenna is being changed for higher accuracy and speed.

Magne, R.; Achard, J.; Armitano, A.; Argouarch, A.; Berger-By, G.; Bernard, J. M.; Bouquey, F.; Charabot, N.; Colas, L.; Corbel, E.; Delpech, L.; Ekedahl, A.; Goniche, M.; Guilhem, D.; Hillairet, J.; Jacquot, J.; Joffrin, E.; Litaudon, X.; Lombard, G.; Mollard, P. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); and others

2014-02-12T23:59:59.000Z

444

High Performance Catalytic Heat Exchanger for SOFC Systems - FuelCell Energy  

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

Catalytic Heat Catalytic Heat Exchanger for SOFC Systems-FuelCell Energy Background In a typical solid oxide fuel cell (SOFC) power generation system, hot (~900 °C) effluent gas from a catalytic combustor serves as the heat source within a high-temperature heat exchanger, preheating incoming fresh air for the SOFC's cathode. The catalytic combustor and the cathode air heat exchanger together represent the largest opportunity for cost

445

Natural convection heating system: off-the-wall evaluation methods  

SciTech Connect

One day data collection results are described for supplementary monitoring of convective air collectors coupled with rock bin storage for house heating. This particular 100% passive heated solar house in the mountains of Arizona had been extensively monitored and previously reported. New information includes the performance of collectors and storage during changeable insolation. In addition, there are evaluations of the alternative techniques for monitoring leakage of dampers on delivery registers, an empirical technique for determining the thermal contribution of direct gain features, and subjective responses of owners to the quality of convective and radiative comfort. Warm is warm, said the owner-builders. Design recommendations for future systems are made and a testing method using a bag volumeter is described. Post-occupancy evaluation is strongly recommended.

Cook, J.; Morris, W.S.

1981-01-01T23:59:59.000Z

446

Water Consumption from Freeze Protection Valves for Solar Water Heating Systems  

SciTech Connect

Conference paper regarding research in the use of freeze protection valves for solar domestic water heating systems in cold climates.

Burch, J.; Salasovich, J.

2005-12-01T23:59:59.000Z

447

Parametric Investigation of the Performance of Solar Heating Systems with Rock Bed Storage  

Science Journals Connector (OSTI)

The performance of solar air collector domestic heating systems with rock bed storage, as obtained from theoretical analysis, is...

W. L. Dutre; J. Vanheelen

1981-01-01T23:59:59.000Z

448

Low and high Temperature Dual Thermoelectric Generation Waste Heat Recovery System for Light-Duty Vehicles  

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

Developing a low and high temperature dual thermoelectric generation waste heat recovery system for light-duty vehicles.

449

The JT-60 radio-frequency heating system: description and R&D results  

Science Journals Connector (OSTI)

A system feature of the radio-frequency (RF) heating system for JT-60 is described. This system contains three units Lower Hybrid Range of Frequencies (LHRF) and one unit Ion Cyclotron Range of Frequencies (ICRF) heating systems. The LHRF heating system produces about 24 MW at 2 \\{GHz\\} of RF power using 24 high power klystrons and the ICRF heating system does 6 MW at 120 \\{MHz\\} of RF power using 8 high power tetrodes. Development of a high power klystron for the LHRF heating system and the coupling system for high power density of the transmission are performed for the construction of the RF heating system for JT-60. Japan Atomic Energy Research Institute (JAERI) has already constructed the RF heating system for JT-60 and is now performing the coupling test to JT-60 plasma.

T. Nagashima; K. Uehara; H. Kimura; T. Imai; T. Fujii; K. Sakamoto; Y. Ikeda; M. Saigusa; N. Suzuki; M. Honda; K. Yokokura; K. Kiyono; M. Sawahata; K. Suganuma; M. Seki; H. Shirakata

1987-01-01T23:59:59.000Z

450

EAST ion cyclotron resonance heating system for long pulse operation  

Science Journals Connector (OSTI)

Abstract Radio frequency (RF) power in the ion cyclotron range of frequencies (ICRF) is one of the primary auxiliary heating techniques for Experimental Advanced Superconducting Tokamak (EAST). The ICRF system for EAST has been developed to support long-pulse high-? advanced tokamak fusion physics experiments. The ICRF system is capable of delivering 12 MW 1000-s RF power to the plasma through two antennas. The phasing between current straps of the antennas can be adjusted to optimize the RF power spectrum. The main technical features of the ICRF system are described. Each of the 8 ICRF transmitters has been successfully tested to 1.5 MW for a wide range of frequency (25–70 MHz) on a dummy load. Part of the ICRF system was in operation during the EAST 2012 spring experimental campaign and a maximum power of 800 kW (at 27 MHz) lasting for 30 s has been coupled for long pulse H mode operation.

Y.P. Zhao; X.J. Zhang; Y.Z. Mao; S. Yuan; D.Y. Xue; X. Deng; L. Wang; S.Q. Ju; Y. Cheng; C.M. Qin; G. Chen; Y. Lin; J.G. Li; B.N. Wan; Y.T. Song; F. Braun; R. Kumazawa; S. Wukitch

2014-01-01T23:59:59.000Z

451

The field test and optimization of a solar assisted heat pump system for space heating in extremely cold area  

Science Journals Connector (OSTI)

Abstract As a kind of sustainable energy source, solar energy is becoming highly valued. Especially in extremely cold areas, the amount of energy consumed for space heating is huge, and the conventional coal heating has polluted the environment seriously, therefore solar heating is significant on both energy and environment conservation. In this study, a solar assisted heat pump (SAHP) system was investigated for space heating under extremely cold climatic condition. The system principle and operation modes was presented, and then the project profile and design procedure were introduced, and finally the system performance was evaluated by field test on typical winter days and modeling via TRNSYS simulation environment. The results show that the solar collector efficiency was 51%, and the solar fraction can reach 66% in December. Economic analysis was also performed and the heating expenses for the present SAHP system was 18 RMB/m2. Finally, the temperatures of solar energy for both direct heating and storage and only for direct heating (T1A and T1B) were simulated and optimized, which have important significance on the operation time of different operation modes.

Huifang Liu; Yiqiang Jiang; Yang Yao

2014-01-01T23:59:59.000Z

452

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System  

E-Print Network (OSTI)

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System Combined Heat and Power System by Zachary Mills Norwood Doctor of Philosophy in the Energy and Resources of analysis of Distributed Concentrating Solar Combined Heat and Power (DCS-CHP) systems is a design

California at Berkeley, University of

453

Multifamily Individual Heating and Ventilation Systems, Lawrence, Massachusetts (Fact Sheet)  

SciTech Connect

The conversion of an older Massachusetts building into condominiums illustrates a safe, durable, and cost-effective solution for heating and ventilation systems that can potentially benefit millions of multifamily buildings. Merrimack Valley Habitat for Humanity (MVHfH) partnered with U.S. Department of Energy Building America team Building Science Corporation (BSC) to provide high performance affordable housing for 10 families in the retrofit of an existing mass masonry building (a former convent). The original ventilation design for the project was provided by a local engineer and consisted of a single large heat recovery ventilator (HRV) located in a mechanical room in the basement with a centralized duct system providing supply air to the main living space and exhausting stale air from the single bathroom in each apartment. This design was deemed to be far too costly to install and operate for several reasons: the large central HRV was oversized and the specified flows to each apartment were much higher than the ASHRAE 62.2 rate; an extensive system of ductwork, smoke and fire dampers, and duct chases were specified; ductwork required a significant area of dropped ceilings; and the system lacked individual ventilation control in the apartments

Not Available

2013-11-01T23:59:59.000Z

454

Development of an On-Line Expert System: Heat Rate Degradation Expert System Advisor  

E-Print Network (OSTI)

An on-line expert system for fossil-fueled power plants, the "Heat Rate Degradation Expert System Advisor," is being developed. This expert system will operate on a microcomputer and will interface with existing plant data acquisition and/or thermal...

Sopocy, D. M.; Henry, R. E.; Gehl, S.; Divakaruni, S. M.

455

A key review on performance improvement aspects of geothermal district heating systems and applications  

Science Journals Connector (OSTI)

This paper deals with a comprehensive analysis and discussion of geothermal district heating systems and applications. In this regard, case studies are presented to study the thermodynamic aspects in terms of energy and exergy and performance improvement opportunities of three geothermal district heating systems, namely (i) Balcova geothermal district heating system (BGDHS), (ii) Salihli geothermal district heating system (SGDHS), and (iii) Gonen geothermal district heating system (GGDHS) installed in Turkey. Energy and exergy modeling of geothermal district heating systems for system analysis and performance evaluation are given, while their performances are evaluated using energy and exergy analysis method. Energy and exergy specifications are presented in tables. In the analysis, the actual system operational data are utilized. In comparison of the local three district heating systems with each other, it is found that the SGDHS has highest energy efficiency, while the GGDHS has highest exergy efficiency.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2007-01-01T23:59:59.000Z

456

Biomass IBR Fact Sheet: Abengoa Bioenergy | Department of Energy  

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

Sheet: Abengoa Bioenergy Integrated Biorefinery for Conversion of Biomass to Ethanol, Power, and Heat ibrcommercialabengoa.pdf More Documents & Publications Abengoa Bioenergy...

457

Model based methodology development for energy recovery in flash heat exchange systems  

E-Print Network (OSTI)

Model based methodology development for energy recovery in flash heat exchange systems Problem of energy efficiency in process operations. Where heat exchange is required between two streams and where with a condensing heat exchanger can be used when heat exchange is required between two streams and where at least

McCarthy, John E.

458

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

permission. QC-06-053 Heat Transfer Pathways in Underfloorchange the dynamics of heat transfer within a room as wellchange the dynamics of heat transfer within a room as well

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

459

Energy Efficient Design of a Waste Heat Rejection System  

E-Print Network (OSTI)

, and oil preheaters. The heating requirements for these heat sinks are generally met by burning fossil fuels or even by using electric heaters while available waste heat is rejected to the surrounding environment using devices such as cooling towers...

Mehta, P.

460

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

Conference of the Society of Heat- ing, Air-Conditioning,permission. QC-06-053 Heat Transfer Pathways in Underfloorthis paper: Results of heat gain shown in this theoretical

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

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


461

Property:HeatRate | Open Energy Information  

Open Energy Info (EERE)

HeatRate HeatRate Jump to: navigation, search This is a property of type Number. Pages using the property "HeatRate" Showing 25 pages using this property. (previous 25) (next 25) A AES Mendota Biomass Facility + 17,873.6 + APS Biomass I Biomass Facility + 8,911 + Acme Landfill Biomass Facility + 12,916.67 + Adrian Energy Associates LLC Biomass Facility + 13,170.6 + Agrilectric Power Partners Ltd Biomass Facility + 17,327.1 + Al Turi Biomass Facility + 15,600.2 + Alabama Pine Pulp Biomass Facility + 15,826.23 + Albany Landfill Gas Utilization Project Biomass Facility + 11,913.9 + Altamont Gas Recovery Biomass Facility + 10,500 + American Canyon Power Plant Biomass Facility + 10,886.8 + American Ref-Fuel of Delaware Valley Biomass Facility + 18,674.9 +

462

The best use of biomass? Greenhouse gas lifecycle analysis of predicted pyrolysis biochar systems.  

E-Print Network (OSTI)

??Life cycle analysis is carried out for 11 predicted configurations of pyrolysis biochar systems to determine greenhouse gas balance, using an original spreadsheet model. System… (more)

Hammond, James A R

2009-01-01T23:59:59.000Z

463

Equipment Design and Cost Estimation for Small Modular Biomass Systems, Synthesis Gas Cleanup, and Oxygen Separation Equipment; Task 2.3: Sulfur Primer  

SciTech Connect

This deliverable is Subtask 2.3 of Task 2, Gas Cleanup Design and Cost Estimates, of NREL Award ACO-5-44027, ''Equipment Design and Cost Estimation for Small Modular Biomass Systems, Synthesis Gas Cleanup and Oxygen Separation Equipment''. Subtask 2.3 builds upon the sulfur removal information first presented in Subtask 2.1, Gas Cleanup Technologies for Biomass Gasification by adding additional information on the commercial applications, manufacturers, environmental footprint, and technical specifications for sulfur removal technologies. The data was obtained from Nexant's experience, input from GTI and other vendors, past and current facility data, and existing literature.

Nexant Inc.

2006-05-01T23:59:59.000Z

464

High Temperature Variable Conductance Heat Pipes for Radioisotope Stirling Systems  

SciTech Connect

In a Stirling radioisotope system, heat must continually be removed from the GPHS modules, to maintain the GPHS modules and surrounding insulation at acceptable temperatures. Normally, the Stirling converter provides this cooling. If the Stirling engine stops in the current system, the insulation is designed to spoil, preventing damage to the GPHS, but also ending the mission. An alkali-metal Variable Conductance Heat Pipe (VCHP) is under development to allow multiple stops and restarts of the Stirling engine. The status of the ongoing effort in developing this technology is presented in this paper. An earlier, preliminary design had a radiator outside the Advanced Stirling Radioisotope Generator (ASRG) casing, used NaK as the working fluid, and had the reservoir located on the cold side adapter flange. The revised design has an internal radiator inside the casing, with the reservoir embedded inside the insulation. A large set of advantages are offered by this new design. In addition to reducing the overall size and mass of the VCHP, simplicity, compactness and easiness in assembling the VCHP with the ASRG are significantly enhanced. Also, the permanently elevated temperatures of the entire VCHP allows the change of the working fluid from a binary compound (NaK) to single compound (Na). The latter, by its properties, allows higher performance and further mass reduction of the system. Preliminary design and analysis shows an acceptable peak temperature of the ASRG case of 140 deg. C while the heat losses caused by the addition of the VCHP are 1.8 W.

Tarau, Calin; Walker, Kara L.; Anderson, William G. [Advanced Cooling Technologies, Inc. 1046 New Holland Ave. Lancaster, PA 17601 (United States)

2009-03-16T23:59:59.000Z

465

Purchasing a New Energy-Efficient Central Heating System | Department of  

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

Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System October 21, 2008 - 4:00am Addthis John Lippert Energy prices are skyrocketing. According to the Energy Information Administration's October 7, 2008 forecast, heating fuel expenditures for the average household using oil as its primary heating fuel are expected to increase by $449 over last winter. Households using natural gas to heat their homes can expect to pay $155 more this winter, on average, than last year, and those using propane can expect to pay $188 more. Households heating primarily with electricity can expect to pay an average of $89 more. That's a lot of money resulting solely from rising heating expenses. You may long for the "good old days," but when it comes to heating systems,

466

Purchasing a New Energy-Efficient Central Heating System | Department of  

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

Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System October 21, 2008 - 4:00am Addthis John Lippert Energy prices are skyrocketing. According to the Energy Information Administration's October 7, 2008 forecast, heating fuel expenditures for the average household using oil as its primary heating fuel are expected to increase by $449 over last winter. Households using natural gas to heat their homes can expect to pay $155 more this winter, on average, than last year, and those using propane can expect to pay $188 more. Households heating primarily with electricity can expect to pay an average of $89 more. That's a lot of money resulting solely from rising heating expenses. You may long for the "good old days," but when it comes to heating systems,

467

Numerical Simulation of a Latent Heat Storage System of a Solar-Aided Ground Source Heat Pump  

E-Print Network (OSTI)

In this study, the rectangular phase change storage tank (PCST) linked to a solar-aided ground source heat pump (SAGSHP) system is investigated experimentally and theoretically. The container of the phase change material (PCM) is the controlling...

Wang, F.; Zheng, M.; Li, Z.; Lei, B.

2006-01-01T23:59:59.000Z

468

Ris Energy Report 4 Supply technologies in the future energy system 10 Supply technologies in the future energy system  

E-Print Network (OSTI)

fuel (REtrol, Chapter 4) or heat, whether from direct electric heating, or heat pumps. Other uses the interaction between wind turbines, other energy sources and consumers in the electricity system. Biomass is combusted for heat and power (24%), A key theme of this chapter is that the energy systems should be (and

469

Energy Performance Comparison of Heating and Air Conditioning Systems for Multi-Family Residential Buildings  

SciTech Connect

The type of heating, ventilation and air conditioning (HVAC) system has a large impact on the heating and cooling energy consumption in multifamily residential buildings. This paper compares the energy performance of three HVAC systems: a direct expansion (DX) split system, a split air source heat pump (ASHP) system, and a closed-loop water source heat pump (WSHP) system with a boiler and an evaporative fluid cooler as the central heating and cooling source. All three systems use gas furnace for heating or heating backup. The comparison is made in a number of scenarios including different climate conditions, system operation schemes and applicable building codes. It is found that with the minimum code-compliant equipment efficiency, ASHP performs the best among all scenarios except in extremely code climates. WSHP tends to perform better than the split DX system in cold climates but worse in hot climates.

Wang, Weimin; Zhang, Jian; Jiang, Wei; Liu, Bing

2011-07-31T23:59:59.000Z

470

Energy performances of intensive and extensive short rotation cropping systems for woody biomass production in the EU  

Science Journals Connector (OSTI)

Abstract One of the strategies to ensure energy security and to mitigate climate change in the European Union (EU) is the establishment and the use of short rotation woody crops (SRWCs) for the production of renewable energy. \\{SRWCs\\} are cultivated in the EU under different management systems. Addressing the energy security problems through \\{SRWCs\\} requires management systems that maximize the net energy yield per unit land area. We assembled and evaluated on-farm data from within the EU, (i) to understand the relationship between the SRWC yields and spatial distribution of precipitation, as well as the relationship between SRWC yield and the planting density, and (ii) to investigate whether extensively managed SRWC systems are more energy efficient than their intensively managed counterparts. We found that SRWC yield ranged from 1.3 to 24 t ha?1 y?1 (mean 9.3±4.2 t ha?1 y?1) across sites. We looked for, but did not find a relationship between yield and annual precipitation as well as between yield and planting density. The energy inputs of extensively managed SRWC systems ranged from 3 to 8 GJ ha?1 y?1 whereas the energy ratio (i.e. energy output to energy input ratio) varied from 9 to 29. Although energy inputs (3–16 GJ ha?1y?1) were larger in most cases than those of extensively managed SRWC systems, intensively managed SRWC systems in the EU had higher energy ratios, i.e. between 15 and 62. The low energy ratio of extensively managed SRWC systems reflected their lower biomass yield per unit area. Switching from intensively managed SRWC systems to extensively managed ones thus creates an energy gap, and will require more arable land to be brought into production to compensate for the yield loss. Consequently, extensification is not the most appropriate path to the success of the wide scale deployment of SRWC for bioenergy production in the EU.

S. Njakou Djomo; A. Ac; T. Zenone; T. De Groote; S. Bergante; G. Facciotto; H. Sixto; P. Ciria Ciria; J. Weger; R. Ceulemans

2015-01-01T23:59:59.000Z

471

Optimization of solar assisted ground source heat pump system for space heating application by Taguchi method and utility concept  

Science Journals Connector (OSTI)

Abstract In the present research, a methodology is proposed to optimize the solar collector area and ground heat exchanger length for achieving higher COP of Solar Assisted Ground Source Heat Pump (SAGSHP) system using Taguchi method and utility concept. Four operating parameters for solar collector and four parameters for ground heat exchanger have been selected with mixed level variation using an L18 (21, 37) orthogonal array. The key parameters such as solar collector area, ground heat exchanger length and COP of the SAGSHP system are optimized to predict the best levels of operating parameters for maximum COP of SAGSHP system. Lower the better concept has been used for the solar collector area and ground heat exchanger length whereas higher the better concept has been employed for the COP of SAGSHP system and the results have been analyzed for the optimum conditions using signal-to-noise (SN) ratio and ANOVA method. Computations were carried out for 18 experimental trial runs by considering 2 ton heating load in winter season. The optimum COP for SAGSHP was estimated to be 4.23 from the utility concept, which is 8.74% higher than the optimum COP predicted by Taguchi optimization. Optimization of solar collector area and ground heat exchanger length by the utility concept has shown only about 2.3% reduction in area and 1.6% reduction in length respectively compared to those values optimized by the Taguchi method.

Vikas Verma; K. Murugesan

2014-01-01T23:59:59.000Z

472

Improving Process Heating System Performance: A Sourcebook for Industry, Second Edition  

SciTech Connect

This is one in a series of sourcebooks to help manufacturers optimize their industrial systems; this particular sourcebook addresses process heating systems.

Not Available

2008-02-01T23:59:59.000Z

473

Catalytic Hydrothermal Gasification of Biomass  

SciTech Connect

A recent development in biomass gasification is the use of a pressurized water processing environment in order that drying of the biomass can be avoided. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, sub-critical processing as well as super-critical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research.

Elliott, Douglas C.

2008-05-06T23:59:59.000Z

474

PERFORMANCE ANALYSIS OF A RESIDENTIAL GROUND SOURCE HEAT PUMP SYSTEM WITH ANTIFREEZE SOLUTION  

E-Print Network (OSTI)

PERFORMANCE ANALYSIS OF A RESIDENTIAL GROUND SOURCE HEAT PUMP SYSTEM WITH ANTIFREEZE SOLUTION M in a ground source heat pump system falls near or below 0o C, an antifreeze mixture must be used to prevent freezing in the heat pump. The antifreeze mixture type and concentration has a number of implications

475

Short communication Optimization of hybrid ground coupled and air source heat pump systems  

E-Print Network (OSTI)

Short communication Optimization of hybrid ­ ground coupled and air source ­ heat pump systems 2008 Accepted 14 January 2010 Available online 28 January 2010 Keywords: Ground coupled heat pump Air to water heat pump Thermal storage device Hybrid HVAC system Energy efficiency Numerical simulation a b

Fernández de Córdoba, Pedro

476

Efficiency improvement of a ground coupled heat pump system from energy management  

E-Print Network (OSTI)

Efficiency improvement of a ground coupled heat pump system from energy management N. Pardo a,*, Á coupled heat pump Energy efficiency Numerical simulation a b s t r a c t The installed capacity of an air to improve the efficiency of a ground coupled heat pump air conditioning system by adapting its produced

Fernández de Córdoba, Pedro

477

Study of Applications of Solar Heating Systems with Seasonal Storage in China  

E-Print Network (OSTI)

In most northern parts of China, it is cold in winter and needs space heating in winter. This paper studies applications of solar heating systems with seasonal storage in China. A typical residential district was selected, and a solar heating system...

Yu, G.; Zhao, X.; Chen, P.

2006-01-01T23:59:59.000Z

478

Analysis of solar desalination system using heat pump  

Science Journals Connector (OSTI)

Abstract This paper investigates a pilot desalination system which consists of a direct expansion solar assisted heat pump (DXSAHP) coupled to a single-effect evaporator unit. The working fluid used is \\{R134a\\} and distillate is obtained via falling film evaporation and flashing in the unit. Experiments have been conducted in both day and night meteorological conditions in Singapore and the effects of solar irradiation and compressor speed have been studied against the system performance. From the experiments, the Performance Ratio (PR) obtained ranges from 0.43 to 0.88, the average Coefficient of Performance (COP) was 8 and the highest distillate production recorded was 1.38 kg/h.

Zakaria Mohd Amin; M.N.A. Hawlader

2015-01-01T23:59:59.000Z

479

Regional Allocation of Biomass to U.S. Energy Demands under a Portfolio of Policy Scenarios  

Science Journals Connector (OSTI)

This study develops a spatially explicit, best-use framework to optimally allocate cellulosic biomass feedstocks to energy demands in transportation, electricity, and residential heating sectors, while minimizing total system costs and tracking greenhouse gas emissions. ... Steubing et al.(6) consider the optimal use of several biomass feedstocks to substitute fossil energy technologies in Europe, which is broader than the previously listed studies, but the authors use a ranking method to identify preferred allocation strategies with a nonspatial model. ... This study builds on these studies in developing a spatially explicit, best-use framework for model year 2020 that optimally allocates cellulosic biomass feedstocks to competing energy end uses (heating, transportation, electricity) based on minimizing total system costs. ...

Kimberley A. Mullins; Aranya Venkatesh; Amy L. Nagengast; Matt Kocoloski

2014-02-10T23:59:59.000Z

480

Solid state differential temperature regulator for a solar heating system  

SciTech Connect

A solid state temperature regulator is provided for a solar heating system for use in conjunction with a swimming pool, or the like. The solar swimming pool heating system includes the usual components, namely, a pump, a filter, and a collector, and in which the pump serves to circulate the water from the pool through the filter and collector and back into the pool. The system also includes additional components, namely, temperature sensors for the collector and for the circulated pool water, appropriate valves, and a solid state control circuit. The solid state control circuit responds to predetermined temperature differences sensed by the sensors to cause the pool water to be circulated through the collector so long as the collector is at a higher temperature than the circulated pool water, and which causes the circulated pool water to by-pass the collector when the temperature of the collector drops below the temperature of the circulated pool water. The control circuit also has a high temperature cut-off control which activates the valves to cause the circulated pool water to by-pass the collector when the temperature of the circulated pool water exceeds a particular threshold. The control circuit also includes a mode switch which may be actuated to reverse the action of the system, causing the pool water to be circulated through the collector when the collector temperature is lower than the pool water temperature, for example, at night following a hot day, in which the collector radiates to the black sky, whereby the collector can be used to cool the water in the pool.

Firebaugh, D.C.

1980-04-01T23:59:59.000Z

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


481

NREL: Biomass Research - Biomass Characterization Projects  

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

Biomass Characterization Projects Biomass Characterization Projects A photo of a magnified image on a computer screen. Many blue specks and lines in different sizes and shapes are visible on top of a white background. A microscopic image of biomass particles. Through biomass characterization projects, NREL researchers are exploring the chemical composition of biomass samples before and after pretreatment and during processing. The characterization of biomass feedstocks, intermediates, and products is a critical step in optimizing biomass conversion processes. Among NREL's biomass characterization projects are: Feedstock/Process Interface NREL is working to understand the effects of feedstock and feedstock pre-processing on the conversion process and vice versa. The objective of the task is to understand the characteristics of biomass feedstocks

482

Thermal performance of phase change material energy storage floor for active solar water-heating system  

Science Journals Connector (OSTI)

The conventional active solar water-heating floor system contains a big water tank to store energy in the day time for heating at night, which takes much building space and is very heavy. In order to reduce the w...

Ruolang Zeng; Xin Wang; Wei Xiao…

2010-06-01T23:59:59.000Z

483

The Application of Frequency-Conversion Technology in Groundwater Source Heat Pump System Reconstruction  

E-Print Network (OSTI)

Deep well pump power is relatively ubiquitous in the groundwater heat pump air-conditioning system in some hotels in Hunan, and the heat pump usually meets the change of the load by throttling. Therefore, frequency conversion technology is proposed...

Dai, X.; Song, S.

2006-01-01T23:59:59.000Z

484

Successful Application of Heat Pumps to a DHC System in the Tokyo Bay Area  

E-Print Network (OSTI)

The Harumi-Island District Heating & Cooling (DHC), which is located in the Tokyo Bay area, introduced the heat pump and thermal storage system with the aim of achieving minimum energy consumption, minimum environmental load, and maximum economical...

Yanagihara, R.; Okagaki, A.

2006-01-01T23:59:59.000Z

485

Economic Analysis of a Waste Water Resource Heat Pump Air-Conditioning System in North China  

E-Print Network (OSTI)

This paper describes the situation of waste water resource in north China and the characteristics and styles of a waste water resource heat pump system, and analyzes the economic feasibility of a waste water resource heat pump air...

Chen, H.; Li, D.; Dai, X.

2006-01-01T23:59:59.000Z

486

Novel Controls for Economic Dispatch of Combined Cooling, Heating and Power (CCHP) Systems  

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

The emergence of technologies that efficiently convert heat into cooling, such as absorption chillers, has opened up many new opportunities and markets for combined heat and power systems. These...

487

Load Preheating Using Flue Gases from a Fuel-Fired Heating System  

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

This tip sheet discusses how the thermal efficiency of a process heating system can be improved significantly by using heat contained in furnace flue gases to preheat the furnace load.

488

Register Closing Effects on Forced Air Heating System Performance  

SciTech Connect

Closing registers in forced air heating systems and leaving some rooms in a house unconditioned has been suggested as a method of quickly saving energy for California consumers. This study combined laboratory measurements of the changes in duct leakage as registers are closed together with modeling techniques to estimate the changes in energy use attributed to closing registers. The results of this study showed that register closing led to increased energy use for a typical California house over a wide combination of climate, duct leakage and number of closed registers. The reduction in building thermal loads due to conditioning only a part of the house was offset by increased duct system losses; mostly due to increased duct leakage. Therefore, the register closing technique is not recommended as a viable energy saving strategy for California houses with ducts located outside conditioned space. The energy penalty associated with the register closing technique was found to be minimized if registers furthest from the air handler are closed first because this tends to only affect the pressures and air leakage for the closed off branch. Closing registers nearer the air handler tends to increase the pressures and air leakage for the whole system. Closing too many registers (more than 60%) is not recommended because the added flow resistance severely restricts the air flow though the system leading to safety concerns. For example, furnaces may operate on the high-limit switch and cooling systems may suffer from frozen coils.

Walker, Iain S.

2003-11-01T23:59:59.000Z

489

Advanced Systems for Preprocessing and Characterizing Coal-Biomass Mixtures as Next-Generation Fuels and Feedstocks  

SciTech Connect

The research activities presented in this report are intended to address the most critical technical challenges pertaining to coal-biomass briquette feedstocks. Several detailed investigations were conducted using a variety of coal and biomass feedstocks on the topics of (1) coal-biomass briquette production and characterization, (2) gasification of coal-biomass mixtures and briquettes, (3) combustion of coal-biomass mixtures and briquettes, and (4) conceptual engineering design and economic feasibility of briquette production. The briquette production studies indicate that strong and durable co-firing feedstocks can be produced by co-briquetting coal and biomass resources commonly available in the United States. It is demonstrated that binderless coal-biomass briquettes produced at optimized conditions exhibit very high strength and durability, which indicates that such briquettes would remain competent in the presence of forces encountered in handling, storage and transportation. The gasification studies conducted demonstrate that coal-biomass mixtures and briquettes are exceptional gasification feedstocks, particularly with regard to the synergistic effects realized during devolatilization of the blended materials. The mixture combustion studies indicate that coal-biomass mixtures are exceptional combustion feedstocks, while the briquette combustion study indicates that the use of blended briquettes reduces NOx, CO2, and CO emissions, and requires the least amount of changes in the operating conditions of an existing coal-fired power plant. Similar results were obtained for the physical durability of the pilot-scale briquettes compared to the bench-scale tests. Finally, the conceptual engineering and feasibility analysis study for a commercial-scale briquetting production facility provides preliminary flowsheet and cost simulations to evaluate the various feedstocks, equipment selection and operating parameters.

Karmis, Michael; Luttrell, Gerald; Ripepi, Nino; Bratton, Robert; Dohm, Erich

2014-06-30T23:59:59.000Z

490

Research and evaluation of biomass resources/conversion/utilization systems (market/experimental analysis for development of a data base for a fuels from biomass model). Quarterly technical progress report, November 1, 1979-January 31, 1980  

SciTech Connect

The biomass allocation model has been developed and is undergoing testing. Data bases for biomass feedstock and thermochemical products are complete. Simulated data on process efficiency and product costs are being used while more accurate data are being developed. Market analyses data are stored for the biomass allocation model. The modeling activity will assist in providing process efficiency information required for the allocation model. Process models for entrained bed and fixed bed gasifiers based on coal have been adapted to biomass. Fuel product manufacturing costs will be used as inputs for the data banks of the biomass allocations model. Conceptual economics have been generated for seven of the fourteen process configurations via a biomass economic computer program. The PDU studies are designed to demonstrate steady state thermochemical conversions of biomass to fuels in fluidized, moving and entrained bed reactor configurations. Pulse tests in a fluidized bed to determine the effect of particle size on reaction rates and product gas composition have been completed. Two hour shakedown tests using peanut hulls and wood as the biomass feedstock and the fluidized bed reactor mode have been carried out. A comparison was made of the gas composition using air and steam - O/sub 2/. Biomass thermal profiles and biomass composition information shall be provided. To date approximately 70 biomass types have been collected. Chemical characterization of this material has begun. Thermal gravimetric, pyrogaschromatographic and effluent gas analysis has begun on pelletized samples of these biomass species.

Ahn, Y.K.; Chen, Y.C.; Chen, H.T.; Helm, R.W.; Nelson, E.T.; Shields, K.J.; Stringer, R.P.; Bailie, R.C.

1980-01-01T23:59:59.000Z

491

IMPACTS OF REFRIGERANTLINE LENGTH ON SYSTEM EFFICIENCY IN RESIDENTIAL HEATING AND COOLING SYSTEMS USING REFRIGERANT DISTRIBUTION.  

SciTech Connect

The effects on system efficiency of excess refrigerant line length are calculated for an idealized residential heating and cooling system. By excess line length is meant refrigerant tubing in excess of the 25 R provided for in standard equipment efficiency test methods. The purpose of the calculation is to provide input for a proposed method for evaluating refrigerant distribution system efficiency. A refrigerant distribution system uses refrigerant (instead of ducts or pipes) to carry heat and/or cooling effect from the equipment to the spaces in the building in which it is used. Such systems would include so-called mini-splits as well as more conventional split systems that for one reason or another have the indoor and outdoor coils separated by more than 25 ft. This report performs first-order calculations of the effects on system efficiency, in both the heating and cooling modes, of pressure drops within the refrigerant lines and of heat transfer between the refrigerant lines and the space surrounding them.

ANDREWS, J.W.

2001-04-01T23:59:59.000Z

492

Biomass Energy Data Book, 2011, Edition 4  

DOE Data Explorer (OSTI)

The Biomass Energy Data Book is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the Biomass Program in the Energy Efficiency and Renewable Energy (EERE) program of the Department of Energy (DOE). Designed for use as a convenient reference, the book represents an assembly and display of statistics and information that characterize the biomass industry, from the production of biomass feedstocks to their end use, including discussions on sustainability. This is the fourth edition of the Biomass Energy Data Book which is only available online in electronic format. There are five main sections to this book. The first section is an introduction which provides an overview of biomass resources and consumption. Following the introduction to biomass, is a section on biofuels which covers ethanol, biodiesel and bio-oil. The biopower section focuses on the use of biomass for electrical power generation and heating. The fourth section is on the developing area of biorefineries, and the fifth section covers feedstocks that are produced and used in the biomass industry. The sources used represent the latest available data. There are also four appendices which include frequently needed conversion factors, a table of selected biomass feedstock characteristics, and discussions on sustainability.

Wright, L.; Boundy, B.; Diegel, S.W.; Davis, S.C.

493

A Methodological Framework for Integrating Waste Biomass into a Portfolio of Thermal Energy Production Systems  

Science Journals Connector (OSTI)

The integration of Renewable Energy Sources (RES) within the contextual framework of existing thermal energy production systems has emerged as a promising ... and sustainable policy towards addressing the growing...

Eleftherios Iakovou; Dimitrios Vlachos; Agorasti Toka

2012-01-01T23:59:59.000Z

494

Definition: Biomass Briquettes | Open Energy Information  

Open Energy Info (EERE)

Biomass Briquettes Biomass Briquettes Jump to: navigation, search Dictionary.png Biomass Briquettes a biofuel substitute to coal and charcoal. They are used to heat, cook, and for energy, where they heat industrial boilers in order to produce electricity from steam. The most common use of the briquettes are in the developing world, where energy sources are not as widely available.[1] View on Wikipedia Wikipedia Definition Biomass briquettes are a biofuel substitute to coal and charcoal. They are used to heat industrial boilers in order to produce electricity from steam. The most common use of the briquettes are in the developing world, where energy sources are not as widely available. There has been a move to the use of briquettes in the developed world through the use of cofiring, when the briquettes are combined with coal in order to create the

495

Värmeöverföring i bergvärmesystem; Heat transfer in ground source heat pump systems.  

E-Print Network (OSTI)

?? The borehole heat exchangers of today suffer from poor thermal and hydrodynamic performance. The purpose of this thesis is to improve the performance of… (more)

Westin, Rasmus

2012-01-01T23:59:59.000Z

496

Chemicals from Biomass  

Science Journals Connector (OSTI)

...Added Chemicals from Biomass. Volume I: Results of Screening for Potential Candidates from Sugars and Synthesis Gas (www1.eere.energy.gov/biomass/pdfs/35523.pdf) . 6. Biomass as Feedstock for a Bioenergy and Bioproducts Industry: The Technical...

David R. Dodds; Richard A. Gross

2007-11-23T23:59:59.000Z

497

CATALYTIC BIOMASS LIQUEFACTION  

E-Print Network (OSTI)

LBL-11 019 UC-61 CATALYTIC BIOMASS LIQUEFACTION Sabri Ergun,Catalytic Liquefaction of Biomass,n M, Seth, R. Djafar, G.of California. CATALYTIC BIOMASS LIQUEFACTION QUARTERLY

Ergun, Sabri

2013-01-01T23:59:59.000Z

498

CATALYTIC LIQUEFACTION OF BIOMASS  

E-Print Network (OSTI)

liquid Fuels from Biomass: "Catalyst Screening and KineticUC-61 (l, RCO osn CDL or BIOMASS CATALYTIC LIQUEFACTION ManuCATALYTIC LIQUEFACTION OF BIOMASS Manu Seth, Roger Djafar,

Seth, Manu

2012-01-01T23:59:59.000Z

499

Biosorption of Trivalent Chromium on the Brown Seaweed Biomass  

E-Print Network (OSTI)

Biosorption of Trivalent Chromium on the Brown Seaweed Biomass Y E O U N G - S A N G Y U N , D O N brown alga Ecklonia biomass as a model system. Titration of the biomass revealed that it contains that various biosorbents are able to effectively remove chromium (4-11). Some of the biomass types have

Volesky, Bohumil

500

Method for controlling exhaust gas heat recovery systems in vehicles  

DOE Patents (OSTI)

A method of operating a vehicle including an engine, a transmission, an exhaust gas heat recovery (EGHR) heat exchanger, and an oil-to-water heat exchanger providing selective heat-exchange communication between the engine and transmission. The method includes controlling a two-way valve, which is configured to be set to one of an engine position and a transmission position. The engine position allows heat-exchange communication between the EGHR heat exchanger and the engine, but does not allow heat-exchange communication between the EGHR heat exchanger and the oil-to-water heat exchanger. The transmission position allows heat-exchange communication between the EGHR heat exchanger, the oil-to-water heat exchanger, and the engine. The method also includes monitoring an ambient air temperature and comparing the monitored ambient air temperature to a predetermined cold ambient temperature. If the monitored ambient air temperature is greater than the predetermined cold ambient temperature, the two-way valve is set to the transmission position.

Spohn, Brian L.; Claypole, George M.; Starr, Richard D

2013-06-11T23:59:59.000Z