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Note: This page contains sample records for the topic "thermal energy conversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Ocean Thermal Energy Conversion  

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

A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity.

2

Ocean Thermal Energy Conversion | Department of Energy  

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

Thermal Energy Conversion Ocean Thermal Energy Conversion August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in...

3

Energy Basics: Ocean Thermal Energy Conversion  

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

Thermal Energy Conversion A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when...

4

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

Ocean Thermal Energy Conversion (OTEC) Draft Programmaticof ocean thermal energy conversion technology. U.S. Depart~on Ocean TherUial Energy Conversion, June 18, 1979. Ocean

Sands, M.Dale

2013-01-01T23:59:59.000Z

5

Energy Basics: Ocean Thermal Energy Conversion  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

6

NREL-Ocean Energy Thermal Conversion | Open Energy Information  

Open Energy Info (EERE)

Ocean Energy Thermal Conversion Jump to: navigation, search Logo: NREL-Ocean Energy Thermal Conversion Name NREL-Ocean Energy Thermal Conversion AgencyCompany Organization...

7

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

DOE-EPA Working Group on Ocean TherUial Energy Conversion,Sands, M.D. (editor) Ocean Thermal Energy Conversion (OTEC)r:he comnercialization of ocean thermal energy conversion

Sands, M.Dale

2013-01-01T23:59:59.000Z

8

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTAL ASSESSMENTOcean Thermal Energy Conversion Draft Programmatic Environ-Ocean Thermal Energy Conversion. U.S. DOE Assistant Secre-

Sands, M.Dale

2013-01-01T23:59:59.000Z

9

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

Thermal Energy Conversion Conference. Ocean Systems Branch,Thermal Energy Conversion Conference. Ocean Systems Branch,thermal energy conversion, June 18, 1979. Ocean Systems

Sands, M. D.

2011-01-01T23:59:59.000Z

10

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

M.D. (editor). 1980. Ocean Thermal Energy Conversion Draft1980 :. i l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTALDevelopment Plan. Ocean Thermal Energy Conversion. U.S. DOE

Sands, M.Dale

2013-01-01T23:59:59.000Z

11

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

Nanoporous Thermal-to-Electrical Energy Conversion System (hand, the indirect energy conversion systems tend to beIn a direct energy conversion system, heat can be converted

Lim, Hyuck

2011-01-01T23:59:59.000Z

12

Assessment of ocean thermal energy conversion  

E-Print Network (OSTI)

Ocean thermal energy conversion (OTEC) is a promising renewable energy technology to generate electricity and has other applications such as production of freshwater, seawater air-conditioning, marine culture and chilled-soil ...

Muralidharan, Shylesh

2012-01-01T23:59:59.000Z

13

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

energy conversion systems ..on thermal energy conversion systems As energy demandsefficient energy conversion in power systems," in Thermal

Ho, Tony

2012-01-01T23:59:59.000Z

14

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

for the commercialization of ocean thermal energy conversionOpen cycle ocean thermal energy conversion. A preliminary1978. 'Open cycle thermal energy converS1on. A preliminary

Sands, M. D.

2011-01-01T23:59:59.000Z

15

Ocean Thermal Energy Conversion Basics | Department of Energy  

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

Thermal Energy Conversion Basics Thermal Energy Conversion Basics Ocean Thermal Energy Conversion Basics August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when the temperature difference between the warmer, top layer of the ocean and the colder, deep ocean water is about 36°F (20°C). These conditions exist in tropical coastal areas, roughly between the Tropic of Capricorn and the Tropic of Cancer. To bring the cold water to the surface, ocean thermal energy conversion plants require an expensive, large-diameter intake pipe, which is submerged a mile or more into the ocean's depths. Some energy experts believe that if ocean thermal energy conversion can become cost-competitive with conventional power technologies, it could be

16

Ocean Thermal Energy Conversion Basics | Department of Energy  

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

Thermal Energy Conversion Basics Thermal Energy Conversion Basics Ocean Thermal Energy Conversion Basics August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when the temperature difference between the warmer, top layer of the ocean and the colder, deep ocean water is about 36°F (20°C). These conditions exist in tropical coastal areas, roughly between the Tropic of Capricorn and the Tropic of Cancer. To bring the cold water to the surface, ocean thermal energy conversion plants require an expensive, large-diameter intake pipe, which is submerged a mile or more into the ocean's depths. Some energy experts believe that if ocean thermal energy conversion can become cost-competitive with conventional power technologies, it could be

17

Ocean Thermal Energy Conversion: An overview  

DOE Green Energy (OSTI)

Ocean thermal energy conversion, or OTEC is a technology that extracts power from the ocean's natural thermal gradient. This technology is being pursued by researchers from many nations; in the United States, OTEC research is funded by the US Department of Energy's Ocean Energy Technology program. The program's goal is to develop the technology so that industry can make a competent assessment of its potential -- either as an alternative or as a supplement to conventional energy sources. Federally funded research in components and systems will help OTEC to the threshold of commercialization. This publication provides an overview of the OTEC technology. 47 refs., 25 figs.

Not Available

1989-11-01T23:59:59.000Z

18

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

for the commercialization of ocean thermal energy conversionR. E. Hathaway. Open cycle ocean thermal energy conversion.of sewage effluent in an ocean current. Inst. of Tech. ,

Sands, M. D.

2011-01-01T23:59:59.000Z

19

Ocean Thermal Energy Conversion: Potential Environmental Impacts and Fisheries  

E-Print Network (OSTI)

Ocean Thermal Energy Conversion: Potential Environmental Impacts and Fisheries Christina M Comfort Institute #12;Ocean Thermal Energy Conversion (OTEC) · Renewable energy ­ ocean thermal gradient · Large, M.Sc. Candidate University of Hawaii at Manoa Department of Oceanography Hawaii Natural Energy

Hawai'i at Manoa, University of

20

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

cycle ocean thermal difference power plant. M.S. Thesis,ocean thermal energy conversion power plants. M.S. Thesis.comments on the thermal effects of power plants on fish eggs

Sands, M. D.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Sustainable Energy Science and Engineering Center Solar Thermal Conversion  

E-Print Network (OSTI)

Sustainable Energy Science and Engineering Center Solar Thermal Conversion Major Functions: · Solar #12;Sustainable Energy Science and Engineering Center Solar Thermal Conversion Solar energy a surface is heated by a certain flux of incident solar energy is determined by the balance of incident

Krothapalli, Anjaneyulu

22

A PRELIMINARY EVALUATION OF IMPINGEMENT AND ENTRAINMENT BY OCEAN THERMAL ENERGY CONVERSION (OTEC) PLANTS  

E-Print Network (OSTI)

Thermal Energy Conversion (OTEC) Program PreoperationalOcean Thermal Energy Conversion (OTEC), U.S. Department ofOregon State University. Conversion Power Plants. Corvallis,

Sullivan, S.M.

2013-01-01T23:59:59.000Z

23

Energy Conversion and Thermal Efficiency Sales Tax Exemption | Department  

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

Energy Conversion and Thermal Efficiency Sales Tax Exemption Energy Conversion and Thermal Efficiency Sales Tax Exemption Energy Conversion and Thermal Efficiency Sales Tax Exemption < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Heating Bioenergy Biofuels Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Wind Solar Water Heating Maximum Rebate None Program Info State Ohio Program Type Sales Tax Incentive Rebate Amount 100% exemption Provider Ohio Department of Taxation Ohio may provide a sales and use tax exemption for certain tangible personal property used in energy conversion, solid waste energy conversion, or thermal efficiency improvement facilities designed, constructed, or installed after December 31, 1974. Qualifying energy conversion facilities are those that are used for the

24

COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO  

E-Print Network (OSTI)

Ocean Thermal Energy Conversion (OTEC) sites to identify thethermal energy conversion (OTEC) program; preoperationalOCEAN THERHAL _ENERGY _CONVERSION(OTEC) --:siTE IN PUERTO

Ryan, Constance J.

2013-01-01T23:59:59.000Z

25

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

a working molecular solar energy conversion system where noEnergy Storage and Conversion System ..74Thermal (MOST) Energy Storage and Conversion System In this

Coso, Dusan

2013-01-01T23:59:59.000Z

26

Open cycle ocean thermal energy conversion system  

DOE Patents (OSTI)

An improved open cycle ocean thermal energy conversion system including a flash evaporator for vaporizing relatively warm ocean surface water and an axial flow, elastic fluid turbine having a vertical shaft and axis of rotation. The warm ocean water is transmitted to the evaporator through a first prestressed concrete skirt-conduit structure circumferentially situated about the axis of rotation. The unflashed warm ocean water exits the evaporator through a second prestressed concrete skirt-conduit structure located circumferentially about and radially within the first skirt-conduit structure. The radially inner surface of the second skirt conduit structure constitutes a cylinder which functions as the turbine's outer casing and obviates the need for a conventional outer housing. The turbine includes a radially enlarged disc element attached to the shaft for supporting at least one axial row of radially directed blades through which the steam is expanded. A prestressed concrete inner casing structure of the turbine has upstream and downstream portions respectively situated upstream and downstream from the disc element. The radially outer surfaces of the inner casing portions and radially outer periphery of the axially interposed disc cooperatively form a downwardly radially inwardly tapered surface. An annular steam flowpath of increasing flow area in the downward axial direction is radially bounded by the inner and outer prestressed concrete casing structures. The inner casing portions each include a transversely situated prestressed concrete circular wall for rotatably supporting the turbine shaft and associated structure. The turbine blades are substantially radially coextensive with the steam flowpath and receive steam from the evaporator through an annular array of prestressed concrete stationary vanes which extend between the inner and outer casings to provide structural support therefor and impart a desired flow direction to the steam.

Wittig, J. Michael (West Goshen, PA)

1980-01-01T23:59:59.000Z

27

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

the portion of thermal energy that can be converted toof high-performance thermal energy harvesting systems, butreferred to as the thermal energy from low- temperature heat

Lim, Hyuck

2011-01-01T23:59:59.000Z

28

Sustainable Energy Science and Engineering Center Solar Thermal Conversion  

E-Print Network (OSTI)

Sustainable Energy Science and Engineering Center Solar Thermal Conversion Major Functions: · Solar Center Collection The temperature to which a surface is heated by a certain flux of incident solar energy - 1914 Between 1880 and 1910, there were 48 articles on solar energy as a world energy source

Krothapalli, Anjaneyulu

29

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

SAN DIEGO Recycling of Wasted Energy : Thermal to ElectricalRecycling of Wasted Energy : Thermal to Electrical Energyenergy, geothermal energy, wasted heat from a nuclear

Lim, Hyuck

2011-01-01T23:59:59.000Z

30

Portfolio Manager Technical Reference: Thermal Conversion Factors | ENERGY  

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

Thermal Conversion Factors Thermal Conversion Factors Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

31

Assessment of Methods to Manipulate Thermal Emission and Evaluate the Quality of Thermal Radiation for Direct Energy Conversion.  

E-Print Network (OSTI)

??ABSTRACT Control of spectral thermal emission from surfaces may be desirable in some energy related applications, such as nano-scale antenna energy conversion and thermophotovoltaic conversion. (more)

Wijewardane, Samantha

2012-01-01T23:59:59.000Z

32

Recycling of wasted energy : thermal to electrical energy conversion.  

E-Print Network (OSTI)

??Harvesting useful electric energy from ambient thermal gradients and/or temperature fluctuations is immensely important. For many years, a number of direct and indirect thermal-to-electrical energy (more)

Lim, Hyuck

2011-01-01T23:59:59.000Z

33

Ocean Thermal Energy Conversion (OTEC) A New Secure Renewable Energy Source  

E-Print Network (OSTI)

Ocean Thermal Energy Conversion (OTEC) A New Secure Renewable Energy Source For Defense New Ventures #12;What is OTEC? OTEC B fiOTEC Benefits: Large Renewable Energy Source 3-5 Terawatts Water Temperature Delta 2 A New Clean Renewable 24/7 Energy Source #12;Ocean Thermal Energy Conversion

34

Ocean Thermal Energy Conversion LUIS A. VEGA  

E-Print Network (OSTI)

demand due to emerging economies like China, India, and Brazil. Coal and natural gas resources 7296 O. It seems sensible toconsider OTEC as one of the renewable energy technologies of the future. Introduction

35

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

in thermal energy conversion efficiency over present solarsolar thermal- photovoltaic co-generation scheme could have potentially very high solar-to-electric efficiency.solar-to-electric conversion efficiencies are attained and no thermal

Ho, Tony

2012-01-01T23:59:59.000Z

36

Ocean Thermal Energy Conversion Mostly about USA  

E-Print Network (OSTI)

Structures (Plantships) · Bottom-Mounted Structures · Model Basin Tests/ At-Sea Tests · 210 kW OC-OTEC systems and with an investment payback period estimated at 3 to 4 years. #12;OTEC 12 Energy Carriers & Attachments #12;#12;#12;#12;Bottom-Mounted Structures · Fixed Towers · Guyed Towers · TLP not shown · Causeway

37

Ocean Thermal Energy Conversion Program Management Plan  

DOE Green Energy (OSTI)

The Office of the Associate Laboratory Director for Energy and Environmental Technology has established the OTEC Program Management Office to be responsible for the ANL-assigned tasks of the OTEC Program under DOE's Chicago Operations and Regional Office (DOE/CORO). The ANL OTEC Program Management Plan is essentially a management-by-objective plan. The principal objective of the program is to provide lead technical support to CORO in its capacity as manager of the DOE power-system program. The Argonne OTEC Program is divided into three components: the first deals with development of heat exchangers and other components of OTEC power systems, the second with development of biofouling counter-measures and corrosion-resistant materials for these components in seawater service, and the third with environmental and climatic impacts of OTEC power-system operation. The essential points of the Management Plan are summarized, and the OTEC Program is described. The organization of the OTEC Program at ANL is described including the functions, responsibilities, and authorities of the organizational groupings. The system and policies necessary for the support and control functions within the organization are discussed. These functions cross organizational lines, in that they are common to all of the organization groups. Also included are requirements for internal and external reports.

Combs, R E

1980-01-01T23:59:59.000Z

38

OCEAN THERMAL ENERGY CONVERSION PRELIMINARY DATA REPORT FOR THE NOVEMBER 1977 GOTEC-02 CRUISE TO THE GULF OF MEXICO MOBILE SITE  

E-Print Network (OSTI)

02 OCEAN THERMAL ENERGY CONVERSION PRELIMINARY DATA REPORTOcean Thermal Energy Conversion (OTEC) sites in the Gulf ofOcean Thermal Energy Conversion (OTEC) Sites: Puerto Rico,

Commins, M.L.

2010-01-01T23:59:59.000Z

39

OCEAN THERMAL ENERGY CONVERSION ECOLOGICAL DATA REPORT FROM 0. S. S. RESEARCHER IN GULF OF MEXICO, JULY 12-23, 1977.  

E-Print Network (OSTI)

01 OCEAN THERMAL ENERGY CONVERSION ECOLOGICAL DATA REPORTOcean Thermal Energy Conversion (OTEC) Sites: Puerto Rico,Ocean Thermal Energy Conversion plant were in- itiated in

Quinby-Hunt, M.S.

2008-01-01T23:59:59.000Z

40

OCEAN THERMAL ENERGY CONVERSION PRELIMINARY DATA REPORT FOR THE NOVEMBER 1977 GOTEC-02 CRUISE TO THE GULF OF MEXICO MOBILE SITE  

E-Print Network (OSTI)

9437 GOTEC-02 OCEAN THERMAL ENERGY CONVERSION PRELIMINARYto potential Ocean Thermal Energy Conversion (OTEC) sites inThree Proposed Ocean Thermal Energy Conversion (OTEC) Sites:

Commins, M.L.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Carbon dioxide release from ocean thermal energy conversion (OTEC) cycles  

DOE Green Energy (OSTI)

This paper presents the results of recent measurements of CO{sub 2} release from an open-cycle ocean thermal energy conversion (OTEC) experiment. Based on these data, the rate of short-term CO{sub 2} release from future open-cycle OTEC plants is projected to be 15 to 25 times smaller than that from fossil-fueled electric power plants. OTEC system that incorporate subsurface mixed discharge are expected to result in no long-term release. OTEC plants can significantly reduce CO{sub 2} emissions when substituted for fossil-fueled power generation. 12 refs., 4 figs., 3 tabs.

Green, H.J. (Solar Energy Research Inst., Golden, CO (USA)); Guenther, P.R. (Scripps Institution of Oceanography, La Jolla, CA (USA))

1990-09-01T23:59:59.000Z

42

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

Thermally-Chargeable Supercapacitor Fluctuating Low-GradeThermally-Chargeable Supercapacitor for Fluctuating Low-Thermally-Chargeable Supercapacitor for Fluctuating Low-

Lim, Hyuck

2011-01-01T23:59:59.000Z

43

Solar Thermal Conversion  

DOE Green Energy (OSTI)

The thermal conversion process of solar energy is based on well-known phenomena of heat transfer (Kreith 1976). In all thermal conversion processes, solar radiation is absorbed at the surface of a receiver, which contains or is in contact with flow passages through which a working fluid passes. As the receiver heats up, heat is transferred to the working fluid which may be air, water, oil, or a molten salt. The upper temperature that can be achieved in solar thermal conversion depends on the insolation, the degree to which the sunlight is concentrated, and the measures taken to reduce heat losses from the working fluid.

Kreith, F.; Meyer, R. T.

1982-11-01T23:59:59.000Z

44

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

for Western Gulf of Mexico. Energy Research and Developmentfor central Gulf of Mexico. Energy Research and DevelopmentGulf of Mexico, - IV-34 in Proc. Fourth Ocean Thermal Energy

Sands, M. D.

2011-01-01T23:59:59.000Z

45

Environmental programs for ocean thermal energy conversion (OTEC)  

Science Conference Proceedings (OSTI)

The environmental research effort in support of the US Department of Energy's Ocean Thermal Energy Conversion (OTEC) program has the goal of providing documented information on the effect of proposed operations on the ocean and the effect of oceanic conditions on the plant. The associated environment program consists of archival studies in potential areas serial oceanographic cruises to sites or regions of interest, studies from various fixed platforms at sites, and compilation of such information for appropriate legal compliance and permit requirements and for use in progressive design of OTEC plants. Site/regions investigated are south of Mobile and west of Tampa, Gulf of Mexico; Punta Tuna, Puerto Rico; St. Croix, Virgin Islands; Kahe Point, Oahu and Keahole Point, Hawaii, Hawaiian Islands; and off the Brazilian south Equatorial Coast. Four classes of environmental concerns identified are: redistribution of oceanic properties (ocean water mixing, impingement/entrainment etc.); chemical pollution (biocides, working fluid leaks, etc.); structural effects (artificial reef, aggregation, nesting/migration, etc.); socio-legal-economic (worker safety, enviromaritime law, etc.).

Wilde, P.

1981-07-01T23:59:59.000Z

46

Rapid Solar-Thermal Conversion of Biomass to Syngas - Energy ...  

Production of synthesis gas or hydrogen by gasification or pyrolysis of biological feedstocks using solar-thermal energy. The invention provides processes that ...

47

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

the overall efficiency. The heat source can be solar thermalefficiency of the vehicles can be considerably enhanced [105]. Other examples of LGH include solar thermal

Lim, Hyuck

2011-01-01T23:59:59.000Z

48

Draft environmental assessment: Ocean Thermal Energy Conversion (OTEC) Pilot Plants  

DOE Green Energy (OSTI)

This Environmental Assessment (EA) has been prepared, in accordance with the National Environmental Policy Act of 1969, for the deployment and operation of a commercial 40-Megawatt (MW) Ocean Thermal Energy Conversion (OTEC) Pilot Plant (hereafter called the Pilot Plant). A description of the proposed action is presented, and a generic environment typical of the candidate Pilot Plant siting regions is described. An assessment of the potential environmental impacts associated with the proposed action is given, and the risk of credible accidents and mitigating measures to reduce these risks are considered. The Federal and State plans and policies the proposed action will encompass are described. Alternatives to the proposed action are presented. Appendix A presents the navigation and environmental information contained in the US Coast Pilot for each of the candidate sites; Appendix B provides a brief description of the methods and calculations used in the EA. It is concluded that environmental disturbances associated with Pilot Plant activities could potentially cause significant environmental impacts; however, the magnitude of these potential impacts cannot presently be assessed, due to insufficient engineering and environmental information. A site- and design-specific OTEC Pilot Plant Environmental Impact Statement (EIS) is required to resolve the potentially significant environmental effects associated with Pilot Plant deployment and operation. (WHK)

Sullivan, S.M.; Sands, M.D.; Donat, J.R.; Jepsen, P.; Smookler, M.; Villa, J.F.

1981-02-01T23:59:59.000Z

49

Ocean Thermal Energy Conversion (OTEC) Programmatic Environmental Analysis--Appendices  

SciTech Connect

The programmatic environmental analysis is an initial assessment of Ocean Thermal Energy Conversion (OTEC) technology considering development, demonstration and commercialization. It is concluded that the OTEC development program should continue because the development, demonstration, and commercialization on a single-plant deployment basis should not present significant environmental impacts. However, several areas within the OTEC program require further investigation in order to assess the potential for environmental impacts from OTEC operation, particularly in large-scale deployments and in defining alternatives to closed-cycle biofouling control: (1) Larger-scale deployments of OTEC clusters or parks require further investigations in order to assess optimal platform siting distances necessary to minimize adverse environmental impacts. (2) The deployment and operation of the preoperational platform (OTEC-1) and future demonstration platforms must be carefully monitored to refine environmental assessment predictions, and to provide design modifications which may mitigate or reduce environmental impacts for larger-scale operations. These platforms will provide a valuable opportunity to fully evaluate the intake and discharge configurations, biofouling control methods, and both short-term and long-term environmental effects associated with platform operations. (3) Successful development of OTEC technology to use the maximal resource capabilities and to minimize environmental effects will require a concerted environmental management program, encompassing many different disciplines and environmental specialties. This volume contains these appendices: Appendix A -- Deployment Scenario; Appendix B -- OTEC Regional Characterization; and Appendix C -- Impact and Related Calculations.

Authors, Various

1980-01-01T23:59:59.000Z

50

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

Mahkamov, Renewable and Sustainable Energy Reviews, Vol. 11(S. Wongwises, Renewable and Sustainable Energy Reviews, Vol.E. Barbier, Renewable Sustainable Energy Review, Vol. 6, pp.

Lim, Hyuck

2011-01-01T23:59:59.000Z

51

Ocean thermal energy conversion plants : experimental and analytical study of mixing and recirculation  

E-Print Network (OSTI)

Ocean thermal energy conversion (OTEC) is a method of generating power using the vertical temperature gradient of the tropical ocean as an energy source. Experimental and analytical studies have been carried out to determine ...

Jirka, Gerhard H.

52

Review of pyroelectric thermal energy harvesting and new MEMs based resonant energy conversion techniques  

Science Conference Proceedings (OSTI)

Harvesting electrical energy from thermal energy sources using pyroelectric conversion techniques has been under investigation for over 50 years, but it has not received the attention that thermoelectric energy harvesting techniques have during this time period. This lack of interest stems from early studies which found that the energy conversion efficiencies achievable using pyroelectric materials were several times less than those potentially achievable with thermoelectrics. More recent modeling and experimental studies have shown that pyroelectric techniques can be cost competitive with thermoelectrics and, using new temperature cycling techniques, has the potential to be several times as efficient as thermoelectrics under comparable operating conditions. This paper will review the recent history in this field and describe the techniques that are being developed to increase the opportunities for pyroelectric energy harvesting. The development of a new thermal energy harvester concept, based on temperature cycled pyroelectric thermal-to-electrical energy conversion, are also outlined. The approach uses a resonantly driven, pyroelectric capacitive bimorph cantilever structure that can be used to rapidly cycle the temperature in the energy harvester. The device has been modeled using a finite element multi-physics based method, where the effect of the structure material properties and system parameters on the frequency and magnitude of temperature cycling, and the efficiency of energy recycling using the proposed structure, have been modeled. Results show that thermal contact conductance and heat source temperature differences play key roles in dominating the cantilever resonant frequency and efficiency of the energy conversion technique. This paper outlines the modeling, fabrication and testing of cantilever and pyroelectric structures and single element devices that demonstrate the potential of this technology for the development of high efficiency thermal-to-electrical energy conversion devices.

Hunter, Scott Robert [ORNL; Lavrik, Nickolay V [ORNL; Mostafa, Salwa [ORNL; Rajic, Slobodan [ORNL; Datskos, Panos G [ORNL

2012-01-01T23:59:59.000Z

53

Graphene-based photovoltaic cells for near-field thermal energy conversion  

E-Print Network (OSTI)

Graphene-based photovoltaic cells for near-field thermal energy conversion Riccardo Messina to a photovoltaic cell can be largely enhanced because of the contribution of evanescent photons, in particular important source of energy. By approaching a photovoltaic (PV) cell3 in proximity of a thermal emitter

Paris-Sud XI, Université de

54

Energy Conversion of Fully Random Thermal Relaxation Times  

E-Print Network (OSTI)

Thermodynamic random processes in thermal systems are generally associated with one or several relaxation times, the inverse of which are formally homogeneous with energy. Here, we show in a precise way that the periodic modification of relaxation times during temperature-constant thermodynamic cycles can be thermodynamically beneficiary to the operator. This result holds as long as the operator who adjusts relaxation times does not attempt to control the randomness associated with relaxation times itself as a Maxwell 'demon' would do. Indirectly, our result also shows that thermal randomness appears satisfactorily described within a conventional quantum-statistical framework, and that the attempts advocated notably by Ilya Prigogine to go beyond a Hilbert space description of quantum statistics do not seem justified - at least according to the present state of our knowledge. Fundamental interpretation of randomness, either thermal or quantum mechanical, is briefly discussed.

Franois Barriquand

2005-07-26T23:59:59.000Z

55

Appendix B Metric and Thermal Conversion Tables  

U.S. Energy Information Administration (EIA)

2011 U.S. Energy Information Administration | Natural Gas Annual 193 Appendix B Metric and Thermal Conversion Tables

56

Energy conversion using thermal transpiration : optimization of a Knudsen compressor  

E-Print Network (OSTI)

Knudsen compressors are devices without any moving parts that use the nanoscale phenomenon of thermal transpiration to pump or compress a gas. Thermal transpiration takes place when a gas is in contact with a solid boundary ...

Klein, Toby A. (Toby Anna)

2012-01-01T23:59:59.000Z

57

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

and Techniques, Energy Conversion and Management, 39 (11),Applications, Energy Conversion and Management, 45 , pp.2011, Low-grade Heat Conversion into Power Using Organic

Coso, Dusan

2013-01-01T23:59:59.000Z

58

Thermal Conversion Process (TCP) Technology  

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

Changing World Technologies' Changing World Technologies' Thermal Conversion Process Commercial Demonstration Plant DOE/EA 1506 Weld County, Colorado December 2004 U.S. DEPARTMENT OF ENERGY GOLDEN FIELD OFFICE 1617 Cole Boulevard Golden, Colorado 80401 Thermal Conversion Process (TCP) Technology Commercial Demonstration - Weld County, CO TABLE OF CONTENTS Environmental Assessment Thermal Conversion Process (TCP) Technology Commercial Demonstration Project Weld County, Colorado SUMMARY............................................................................................................................. S-1 1.0 INTRODUCTION.........................................................................................................1-1 1.1. National Environmental Policy Act and Related Procedures...........................1-1

59

Heat exchanger cleaning in support of ocean thermal energy conversion (OTEC) - electronics subsystems  

DOE Green Energy (OSTI)

Electronics systems supporting the development of biofouling countermeasures for Ocean Thermal Energy Conversion (OTEC) are described. Discussed are the thermistor/thermopile amplifiers, heaters, flowmeters, temperature measurement, control systems for chlorination, flow driven brushes, and recirculating sponge rubber balls. The operation and troubleshooting of each electronic subsystem is documented.

Lott, D.F.

1980-12-01T23:59:59.000Z

60

Seawater pump study: Ocean Thermal Energy Conversion Program. Final report. [For ocean thermal power plants  

DOE Green Energy (OSTI)

The pumping power required to move cold seawater and warm seawater through an Ocean Thermal Energy Conversion (OTEC) power plant is a significant portion of the plant power output; therefore, seawater pump performance, sizing, and cost information are very influential inputs into any power plant system design optimizations. The analysis and evaluation of large seawater pumping systems selected specifically for the OTEC application are provided with a view toward judging the impact of pump selection on overall OTEC power plant performance. A self-contained bulb, direct drive, axial flow pump was found to have a distinct advantage in performance and arrangement flexibility. A design of a pump operating at a net total head rise of 3.5 meters and a flow capacity of 100 m/sup 3//s is presented including pump blade geometry (profiles), pump diffuser geometry, and pump/diffuser configuration and performance. Results are presented in terms of the geometric and power requirements of several related pump designs over a range of seawater capacity from 25 m/sup 3//s to 100 m/sup 3//s. Summary analysis and evaluations include pump design weights and cost estimates.

Little, T.E.

1978-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

reclamation and solar thermal energy," Energy [accepted]. [and M Dennis, "Solar thermal energy systems in Australia,"and M Dennis, "Solar thermal energy systems in Australia,"

Ho, Tony

2012-01-01T23:59:59.000Z

62

System for thermal energy storage, space heating and cooling and power conversion  

DOE Patents (OSTI)

An integrated system for storing thermal energy, for space heating and cong and for power conversion is described which utilizes the reversible thermal decomposition characteristics of two hydrides having different decomposition pressures at the same temperature for energy storage and space conditioning and the expansion of high-pressure hydrogen for power conversion. The system consists of a plurality of reaction vessels, at least one containing each of the different hydrides, three loops of circulating heat transfer fluid which can be selectively coupled to the vessels for supplying the heat of decomposition from any appropriate source of thermal energy from the outside ambient environment or from the spaces to be cooled and for removing the heat of reaction to the outside ambient environment or to the spaces to be heated, and a hydrogen loop for directing the flow of hydrogen gas between the vessels. When used for power conversion, at least two vessels contain the same hydride and the hydrogen loop contains an expansion engine. The system is particularly suitable for the utilization of thermal energy supplied by solar collectors and concentrators, but may be used with any source of heat, including a source of low-grade heat.

Gruen, Dieter M. (Downers Grove, IL); Fields, Paul R. (Chicago, IL)

1981-04-21T23:59:59.000Z

63

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

Review on Sustainable thermal Energy Storage Technologies,D. , 2009, Review on Thermal Energy Storage with PhaseW. , 2002, Survey of Thermal Energy Storage for Parabolic

Coso, Dusan

2013-01-01T23:59:59.000Z

64

Open cycle ocean thermal energy conversion system structure  

DOE Patents (OSTI)

A generally mushroom-shaped, open cycle OTEC system and distilled water producer which has a skirt-conduit structure extending from the enlarged portion of the mushroom to the ocean. The enlarged part of the mushroom houses a toroidal casing flash evaporator which produces steam which expands through a vertical rotor turbine, partially situated in the center of the blossom portion and partially situated in the mushroom's stem portion. Upon expansion through the turbine, the motive steam enters a shell and tube condenser annularly disposed about the rotor axis and axially situated beneath the turbine in the stem portion. Relatively warm ocean water is circulated up through the radially outer skirt-conduit structure entering the evaporator through a radially outer portion thereof, flashing a portion thereof into motive steam, and draining the unflashed portion from the evaporator through a radially inner skirt-conduit structure. Relatively cold cooling water enters the annular condenser through the radially inner edge and travels radially outwardly into a channel situated along the radially outer edge of the condenser. The channel is also included in the radially inner skirt-conduit structure. The cooling water is segregated from the potable, motive steam condensate which can be used for human consumption or other processes requiring high purity water. The expansion energy of the motive steam is partially converted into rotational mechanical energy of the turbine rotor when the steam is expanded through the shaft attached blades. Such mechanical energy drives a generator also included in the enlarged mushroom portion for producing electrical energy. Such power generation equipment arrangement provides a compact power system from which additional benefits may be obtained by fabricating the enclosing equipment, housings and component casings from low density materials, such as prestressed concrete, to permit those casings and housings to also function as a floating support vessel.

Wittig, J. Michael (West Goshen, PA)

1980-01-01T23:59:59.000Z

65

Rankine cycle energy conversion system design considerations for low and intermediate temperature sensible heat sources. Geothermal, waste heat, and solar thermal conversion  

DOE Green Energy (OSTI)

Design considerations are described for energy conversion systems for low and intermediate temperature sensible heat sources such as found in geothermal, waste heat, and solar-thermal applications. It is concluded that the most cost effective designs for the applications studied did not require the most efficient thermodynamic cycle, but that the efficiency of the energy conversion hardware can be a key factor.

Abbin, J.P. Jr.

1976-10-01T23:59:59.000Z

66

Near and far field models of external fluid mechanics of Ocean Thermal Energy Conversion (OTEC) power plants  

E-Print Network (OSTI)

The world is facing the challenge of finding new renewable sources of energy - first, in response to fossil fuel reserve depletion, and second, to reduce greenhouse gas emissions. Ocean Thermal Energy Conversion (OTEC) can ...

Rodrguez Buo, Mariana

2013-01-01T23:59:59.000Z

67

Ocean thermal energy conversion power system development-I. Phase I. Final report  

DOE Green Energy (OSTI)

The objective of the Ocean Thermal Energy Conversion (OTEC) Power System Development-I (PSD-I), Phase I, study was to develop conceptual and preliminary designs of closed-cycle ammonia power system modules for the 100-MW(e) OTEC Demonstration Plant, the 400-MW(e) Commercial Size Plant, and Heat Exchanger Test Articles representative of the full-size power system module design. Results are presented.

Not Available

1978-12-18T23:59:59.000Z

68

Thermal Sciences The thermal sciences area involves the study of energy conversion and transmission, power  

E-Print Network (OSTI)

, power generation, the flow of liquids and gases, and the transfer of thermal energy (heat) by means, Thermodynamics, a sophomore spring course. This is followed by ME 608, Fluid Dynamics in the fall of the junior - Analytical Fluid Dynamics ME 709 - Computational Fluids Dynamics ME 712 - Waves in Fluids #12;

Chini, Gregory P.

69

Design and cost of near-term OTEC (Ocean Thermal Energy Conversion) plants for the production of desalinated water and electric power. [Ocean Thermal Energy Conversion (OTEC)  

DOE Green Energy (OSTI)

There currently is an increasing need for both potable water and power for many islands in the Pacific and Caribbean. The Ocean Thermal Energy Conversion (OTEC) technology fills these needs and is a viable option because of the unlimited supply of ocean thermal energy for the production of both desalinated water and electricity. The OTEC plant design must be flexible to meet the product-mix demands that can be very different from site to site. This paper describes different OTEC plants that can supply various mixes of desalinated water and vapor -- the extremes being either all water and no power or no water and all power. The economics for these plants are also presented. The same flow rates and pipe sizes for both the warm and cold seawater streams are used for different plant designs. The OTEC plant designs are characterized as near-term because no major technical issues need to be resolved or demonstrated. The plant concepts are based on DOE-sponsored experiments dealing with power systems, advanced heat exchanger designs, corrosion and fouling of heat exchange surfaces, and flash evaporation and moisture removal from the vapor using multiple spouts. In addition, the mature multistage flash evaporator technology is incorporated into the plant designs were appropriate. For the supply and discharge warm and cold uncertainties do exist because the required pipe sizes are larger than the maximum currently deployed -- 40-inch high-density polyethylene pipe at Keahole Point in Hawaii. 30 refs., 6 figs., 8 tabs.

Rabas, T.; Panchal, C.; Genens, L.

1990-01-01T23:59:59.000Z

70

Research on the external fluid mechanics of ocean thermal energy conversion plants : report covering experiments in a current  

E-Print Network (OSTI)

This report describes a set of experiments in a physical model study to explore plume transport and recirculation potential for a range of generic Ocean Thermal Energy Conversion (OTEC) plant designs and ambient conditions. ...

Fry, David J.

1981-01-01T23:59:59.000Z

71

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

2009, Solar Thermal Power Plants, The European PhysicalThermal Energy Storage for Parabolic Trough Power Plants,fuel based power plants, and most nuclear and solar thermal

Coso, Dusan

2013-01-01T23:59:59.000Z

72

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

R. a. , 2012, Molecular Solar Thermal (MOST) Energy Storageand Nocera D. G. , 2010, Solar Energy Supply and Storage20] Kalogirou S. a. , 2004, Solar Thermal Collectors and

Coso, Dusan

2013-01-01T23:59:59.000Z

73

GEOTEC (Geothermal-Enhanced Ocean Thermal Energy Conversion) engineering concept study  

DOE Green Energy (OSTI)

The project was to provide a conceptual design for a modular state-of-the-art geothermal-enhanced ocean thermal energy conversion (GEOTEC) plant for implementation at a Navy site on Adak Island, Alaska. This report includes the following appendices: (1) statement of work; (2) geothermal resource assessment; (3) assessment of environmental issues; (4) design optimization program formulations for GEOTEC; (5) calculation of geofluid temperature drop in brine collection system; (6) pressure losses and pumping requirements for seawater pipeline system; (7) geocost comparison of single and dual binary cycle systems; (8) description of seawater pipeline system; and (9) plant system installed cost estimates. (ACR)

Not Available

1984-03-01T23:59:59.000Z

74

Kinematic Stirling engine as an energy conversion subsystem for paraboloidal dish solar thermal power plants  

DOE Green Energy (OSTI)

The potential of a suitably designed and economically manufactured Stirling engine as the energy conversion subsystem of a paraboloidal dish-Stirling solar thermal power module has been estimated. Results obtained by elementary cycle analyses have been shown to match quite well the performance characteristics of an advanced kinematic Stirling engine, the United Stirling P-40, as established by current prototypes of the engine and by a more sophisticated analytic model of its advanced derivative. In addition to performance, brief consideration has been given to other Stirling engine criteria such as durability, reliability, and serviceability. Production costs have not been considered here.

Bowyer, J.M.

1984-04-15T23:59:59.000Z

75

Solar energy conversion systems engineering and economic analysis radiative energy input/thermal electric output computation. Volume III  

DOE Green Energy (OSTI)

The direct energy flux analytical model, an analysis of the results, and a brief description of a non-steady state model of a thermal solar energy conversion system implemented on a code, SIRR2, as well as the coupling of CIRR2 which computes global solar flux on a collector and SIRR2 are presented. It is shown how the CIRR2 and, mainly, the SIRR2 codes may be used for a proper design of a solar collector system. (LEW)

Russo, G.

1982-09-01T23:59:59.000Z

76

Selected legal and institutional issues related to Ocean Thermal Energy Conversion (OTEC) development  

DOE Green Energy (OSTI)

Ocean Thermal Energy Conversion (OTEC), an attractive alternative to traditional energy sources, is still in the early stages of development. To facilitate OTEC commercialization, it is essential that a legal and institutional framework be designed now so as to resolve uncertainties related to OTEC development, primarily involving jurisdictional, regulatory, and environmental issues. The jurisdictional issues raised by OTEC use are dependent upon the site of an OTEC facility and its configuration; i.e., whether the plant is a semipermanent fixture located offshore or a migrating plant ship that provides a source of energy for industry at sea. These issues primarily involve the division of authority between the Federal Government and the individual coastal states. The regulatory issues raised are largely speculative: they involve the adaptation of existing mechanisms to OTEC operation. Finally, the environmental issues raised center around compliance with the National Environmental Policy Act (NEPA) as well as international agreements. 288 references.

Nanda, V. P.

1979-06-01T23:59:59.000Z

77

Exceeding the solar cell Shockley-Queisser limit via thermal up-conversion of low-energy photons  

E-Print Network (OSTI)

Maximum efficiency of ideal single-junction photovoltaic (PV) cells is limited to 33% (for one sun illumination) by intrinsic losses such as band edge thermalization, radiative recombination, and inability to absorb below-bandgap photons. This intrinsic thermodynamic limit, named after Shockley and Queisser (S-Q), can be exceeded by utilizing low-energy photons either via their electronic up-conversion or via thermophotovoltaic (TPV) conversion process. However, electronic up-conversion systems have extremely low efficiencies, and practical temperature considerations limit the operation of TPV converters to the narrow-gap PV cells. Here we develop a conceptual design of a hybrid TPV platform, which exploits thermal up-conversion of low-energy photons and is compatible with conventional silicon PV cells by using spectral and directional selectivity of the up-converter. The hybrid platform offers sunlight-to-electricity conversion efficiency exceeding that imposed by the S-Q limit on the corresponding PV cells ...

Boriskina, Svetlana V

2013-01-01T23:59:59.000Z

78

Corrosion and biofouling on the non-heat-exchanger surfaces of an ocean thermal energy conversion power plant: a survey  

DOE Green Energy (OSTI)

Of the many foreseeable problems confronting economical ocean thermal energy conversion operation, two major items are the deterioration of the structural and functional components, which prevents efficient operation, and the biofouling of the surfaces, which adds excess weight to the floating ocean platform. The techniques required for effective long-term control of deterioration and corrosion have been investigated actively for many years, and successful solutions for most situations have been developed. For the most part, these solutions can be directly transferred to the ocean thermal energy conversion plant. The majority of problems in these areas are expected to be associated with scale-up and will require some advanced development due to the immensity of the ocean thermal energy conversion platform. Current antifouling control systems are not effective for long-term fouling prevention. Commercially available antifouling coatings are limited to a 3-year service life in temperate waters, and even shorter in tropical waters. However, underwater cleaning techniques and some fouling-control systems presently being used by conventional power plants may find utility on an ocean thermal energy conversion plant. In addition, some recent major advances in long-term antifouling coatings sponsored by the Navy may be applicable to ocean thermal energy conversion. 132 references.

Castelli, V.J. (ed.)

1979-05-01T23:59:59.000Z

79

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

of Photochemical and Photovoltaic Solar Energy Converters,of solar energy in either photovoltaic or solar thermalphotovoltaic (PV) systems,[13,82,83] and solar thermal systems (energy

Coso, Dusan

2013-01-01T23:59:59.000Z

80

In-situ biofouling of ocean thermal energy conversion (OTEC) evaporator tubes  

Science Conference Proceedings (OSTI)

The Puerto Rico Center for Energy and Environmental Research equipped a LCU facility in 1100 m of water near Punta Tuna, Puerto Rico to measure in situ biofouling of simulated Ocean Thermal Energy Conversion evaporator tubes. The system consisted of two 5052 aluminum alloy and two titanium tubes, through which a continuous flow of ocean water was maintained. The tubes were cleaned three times and the fouling resistance was measured, showing only slight differences between the tubes with respect to heat transfer loss resulting from biofouling. In all units, the average fouling rate after cleaning was greater than before cleaning, and only after the first cleaning did the aluminum units show greater fouling rates than did the titanium. The titanium units showed a progressive increase in the fouling rates with each cleaning. The subsequent average fouling rates for all units after eight months were between 4 and 4.6 x 0.000010 sq m-k/W-day.

Sasscer, D.S. (Univ. of Puerto Rico, Mayaguez); Morgan, T. (Argonne National Lab., IL)

1981-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Ocean Thermal Energy Conversion (OTEC) Program. Volume 1. Preoperatinal ocean test platform  

DOE Green Energy (OSTI)

An environmental impact assessment for the field test of the first preoperational Ocean Thermal Energy Conversion, referred to as OTEC-1, is presented. The conceptual design of OTEC-1 is described, and the existing environments at the four OTEC-1 study sites (Punta Tuna, Keahole Point, offshore New Orleans, and offshore Tampa) are discussed. The environmental impacts considered include organism impingement, organism entrainment, ocean water mixing, metallic ion release, chlorine release, ammonia leakage, oil release, and platform attraction. The development of a risk assessment model for credible accidents at OTEC-1 is discussed. Also, the federal and state legal, safety, and health policies pertinent to OTEC-1 are presented. A glossary is included. (WHK)

Not Available

1979-03-01T23:59:59.000Z

82

Graphene-based photovoltaic cells for near-field thermal energy conversion  

E-Print Network (OSTI)

Thermophotovoltaic devices are energy-conversion systems generating an electric current from the thermal photons radiated by a hot body. In far field, the efficiency of these systems is limited by the thermodynamic Schockley-Queisser limit corresponding to the case where the source is a black body. On the other hand, in near field, the heat flux which can be transferred to a photovoltaic cell can be several orders of magnitude larger because of the contribution of evanescent photons. This is particularly true when the source supports surface polaritons. Unfortunately, in the infrared where these systems operate, the mismatch between the surface-mode frequency and the semiconductor gap reduces drastically the potential of this technology. Here we show that graphene-based hybrid photovoltaic cells can significantly enhance the generated power paving the way to a promising technology for an intensive production of electricity from waste heat.

Riccardo Messina; Philippe Ben-Abdallah

2012-07-05T23:59:59.000Z

83

Deep water pipe, pump, and mooring study: Ocean Thermal Energy Conversion program. Final report  

DOE Green Energy (OSTI)

The ocean engineering issues affecting the design, construction, deployment, and operation of Ocean Thermal Energy Conversion (OTEC) power plants are of key importance. This study addressed the problems associated with the conceptual design of the deep-water pipe, cold-water-pumping, and platform mooring arrangements. These subsystems fall into a natural grouping since the parameters affecting their design are closely related to each other and to the ocean environment. Analysis and evaluations are provided with a view toward judging the impact of the various subsystems on the overall plant concept and to provide an estimate of material and construction cost. Parametric data is provided that describes mooring line configurations, mooring line loads, cold water pipe configurations, and cold water pumping schemes. Selected parameters, issues, and evaluation criteria are used to judge the merits of candidate concepts over a range of OTEC plant size from 100 MWe to 1000 MWe net output power.

Little, T.E.; Marks, J.D.; Wellman, K.H.

1976-06-01T23:59:59.000Z

84

Modeling and analysis of hybrid geothermal-solar thermal energy conversion systems  

E-Print Network (OSTI)

Innovative solar-geothermal hybrid energy conversion systems were developed for low enthalpy geothermal resources augmented with solar energy. The goal is to find cost-effective hybrid power cycles that take advantage of ...

Greenhut, Andrew David

2010-01-01T23:59:59.000Z

85

Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report  

DOE Green Energy (OSTI)

Westinghouse has completed the Preliminary Design Phase for the Power System Development of the Ocean Thermal Energy Conversion (OTEC) Demonstration Plant project. This study included the development of a preliminary design for a Modular Application scaled power system (10MWe) and Heat Exchanger Test Articles, both based on the concept developed in the Conceptual Design Phase. The results of this study were used to improve the baseline design of the 50MWe module for the Commercial Size Power System, which was recommended for the demonstration plant by the conceptual design study. The 50MWe module was selected since it has the lowest cost, and since its size convincingly demonstrates that future economically viable commercial plants, having reliable operation with credible anticipated costs, are possible. Additional optimization studies on the size of the power system plus hull continue to identify 50MWe as the preferred minimum cost configuration. This study was limited to a closed cycle ammonia power system module, using a seawater temperature difference of 40/sup 0/F, and a surface platform/ship reference hull. This volume describes system operation, a complete test program to verify mechanical reliability and thermal performance, fabrication and installation operations, and a cost analysis. (WHK)

Not Available

1978-12-04T23:59:59.000Z

86

Development of plastic heat exchangers for ocean thermal energy conversion. Final report, August 1976--December 1978  

DOE Green Energy (OSTI)

Materials and processes have been selected and design information obtained for plastic ocean thermal energy conversion (OTEC) heat exchangers as the result of a program comprising five types of laboratory experiments. Tests to evaluate the chemical resistance of seven commercially available thermoplastics to sea water and several possible working fluids were conducted with emphasis placed on compatibility with ammonia. Environmental rupture tests involving exposure of stressed specimens to sea water or liquid ammonia indicated that the high density polyethylene (HDPE) is the best suited candidate and produced an extrapolated 100,000 hour failure stress of 1060 psi for HDPE. Long term durability tests of extruded HDPE plate-tube panel confirmed that plastic heat transfer surface is mechanically reliable in an OTEC environment. Thermal conductivity measurements of acetylene black filled HDPE indicated that conductivity may be increased by 50% with a 35% by weight filler loading. The permeability coefficient measured for liquid ammonia through HDPE was higher than previous estimates. Test showed that the rate can be significantly reduced by sulfonation of HDPE. A review of biofouling mechanisms revealed that the permeable nature of the plastic heat exchanger surface may be used to control primary biofouling form formation by allowing incorporation of non-toxic organic repellents into the plastic. A preliminary design and fabrication development program suggests that construction of an ammonia condenser test unit is feasible using currently available materials and manufacturing techniques.

Hart, G.K.; Lee, C.O.; Latour, S.R.

1979-01-01T23:59:59.000Z

87

Ocean Thermal Energy Conversion power system development. Phase I. Final report  

DOE Green Energy (OSTI)

This report covers the conceptual and preliminary design of closed-cycle, ammonia, ocean thermal energy conversion power plants by Westinghouse Electric Corporation. Preliminary designs for evaporator and condenser test articles (0.13 MWe size) and a 10 MWe modular experiment power system are described. Conceptual designs for 50 MWe power systems, and 100 MWe power plants are also descirbed. Design and cost algorithms were developed, and an optimized power system design at the 50 MWe size was completed. This design was modeled very closely in the test articles and in the 10 MWe Modular Application. Major component and auxiliary system design, materials, biofouling, control response, availability, safety and cost aspects are developed with the greatest emphasis on the 10 MWe Modular Application Power System. It is concluded that all power plant subsystems are state-of-practice and require design verification only, rather than continued research. A complete test program, which verifies the mechanical reliability as well as thermal performance, is recommended and described.

Not Available

1978-12-04T23:59:59.000Z

88

Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report  

DOE Green Energy (OSTI)

Westinghouse has completed the Preliminary Desigh Phase for the Power System Development of the Ocean Thermal Energy Conversion (OTEC) Demonstration Plant project. This study included the development of a preliminary design for a Modular Application scaled power system (10MWe) and Heat Exchanger Test Articles, both based on the concept developed in the Conceptual Design Phase. The results of this study were used to improve the baseline design of the 50MWe module for the Commercial Size Power System, which was recommended for the demonstration plant by the conceptual design study. The 50MWe module was selected since it has the lowest cost, and since its size convincingly demonstrates that future economically viable commercial plants, having reliable operation with credible anticipated costs, are possible. Additional optimization studies on the size of the power system plus hull continue to identify 50MWe as the preferred minimum cost configuration. This study was limited to a closed cycle ammonia power system module, using a seawater temperature difference of 40/sup 0/F, and a surface platform/ship reference hull. This volume presents the preliminary design configuration and system optimization. (WHK)

Not Available

1978-12-04T23:59:59.000Z

89

Solar energy conversion.  

SciTech Connect

If solar energy is to become a practical alternative to fossil fuels, we must have efficient ways to convert photons into electricity, fuel, and heat. The need for better conversion technologies is a driving force behind many recent developments in biology, materials, and especially nanoscience. The Sun has the enormous untapped potential to supply our growing energy needs. The barrier to greater use of the solar resource is its high cost relative to the cost of fossil fuels, although the disparity will decrease with the rising prices of fossil fuels and the rising costs of mitigating their impact on the environment and climate. The cost of solar energy is directly related to the low conversion efficiency, the modest energy density of solar radiation, and the costly materials currently required. The development of materials and methods to improve solar energy conversion is primarily a scientific challenge: Breakthroughs in fundamental understanding ought to enable marked progress. There is plenty of room for improvement, since photovoltaic conversion efficiencies for inexpensive organic and dye-sensitized solar cells are currently about 10% or less, the conversion efficiency of photosynthesis is less than 1%, and the best solar thermal efficiency is 30%. The theoretical limits suggest that we can do much better. Solar conversion is a young science. Its major growth began in the 1970s, spurred by the oil crisis that highlighted the pervasive importance of energy to our personal, social, economic, and political lives. In contrast, fossil-fuel science has developed over more than 250 years, stimulated by the Industrial Revolution and the promise of abundant fossil fuels. The science of thermodynamics, for example, is intimately intertwined with the development of the steam engine. The Carnot cycle, the mechanical equivalent of heat, and entropy all played starring roles in the development of thermodynamics and the technology of heat engines. Solar-energy science faces an equally rich future, with nanoscience enabling the discovery of the guiding principles of photonic energy conversion and their use in the development of cost-competitive new technologies.

Crabtree, G. W.; Lewis, N. S. (Materials Science Division); (California Inst. of Tech.)

2008-03-01T23:59:59.000Z

90

The magnesium silicide germanide stannide alloy: A new concept in ocean thermal energy conversion  

Science Conference Proceedings (OSTI)

In devices hitherto used for the direct conversion of heat into electricity, commonly known as ''thermoelectric energy converters'', the efficiency of conversion is appreciably lower than that of conventional reciprocating or rotary heat engines. This low efficiency is brought about by the physical properties of the materials selected for the manufacture of these devices. The materials that are currently being used for this purpose are either simple elements and alloys thereof, such as silicon and germanium, or intermetallic compounds, either simple or alloys and solid solutions thereof. Of the latter, mention may be made of bismuth telluride, antimony telluride, lead telluride, antimony silver telluride, lead selenide, bismuth selenide, antimony selenide, etc., as well as mixtures and solid solutions of these and other compounds. A search in respect of these materials carried out in the U.S. Patent literature indicates indeed a quite substantial and impressive record.

Nicolaou, M.C.

1983-12-01T23:59:59.000Z

91

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

Heat Exchangers, Applied Thermal Engineering, 25 (1), pp.Raad P. E. , 2008, Thermal Challenges in Next-GenerationAssessment of High-Heat-Flux Thermal Management Schemes,

Coso, Dusan

2013-01-01T23:59:59.000Z

92

Thermal to Electrical Energy Conversion of Skutterudite-Based Thermoelectric Modules  

SciTech Connect

The performance of thermoelectric (TE) materials has improved tremendously over the past decade. The intrinsic thermal and electrical properties of state-of-the-art TE materials demonstrate that the potential for widespread practical TE applications is very large and includes TE generators (TEGs) for automotive waste heat recovery. TE materials for automotive TEG applications must have good intrinsic performance, be thermomechanically compatible, and be chemically stable in the 400 K to 850 K temperature range. Both n-type and p-type varieties must be available at low cost, easily fabricated, and durable. They must also form robust junctions and develop good interfaces with other materials to permit efficient flows of electrical and thermal energy. Among the TE materials of interest for automotive waste heat recovery systems are the skutterudite compounds, which are the antimony-based transition-metal compounds RTE4Sb12, where R can be an alkali metal (e.g., Na, K), alkaline earth (e.g., Ba), or rare earth (e.g., La, Ce, Yb), and TE can be a transition metal (e.g., Co, Fe). We synthesized a considerable quantity of n-type and p-type skutterudites, fabricated TE modules, incorporated these modules into a prototype TEG, and tested the TEG on a production General Motors (GM) vehicle. We discuss our progress on skutterudite TE module fabrication and present module performance data for electrical power output under simulated operating conditions for automotive waste heat recovery systems. We also present preliminary durability results on our skutterudite modules.

Salvador, James R. [GM R& D and Planning, Warren, Michigan; Cho, Jung Y [GM R& D and Planning, Warren, Michigan; Ye, Zuxin [GM Research and Development Center; Moczygemba, Joshua E. [Marlow Industries, Inc; Thompson, Alan [Marlow Industries, Inc; Sharp, Jeff W. [Marlow Industries, Inc; Konig, Jan [Fraunhofer-Institute, Freiburg, Germany; Maloney, Ryan [Michigan State University; Thompson, Travis [Michigan State University; Sakamoto, Jeff [Michigan State University; Wang, Hsin [ORNL; Wereszczak, Andrew A [ORNL; Meisner, G P [General Motors Corporation-R& D

2013-01-01T23:59:59.000Z

93

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

Renewable and Sustainable Energy Reviews, 13 (2), pp. 318and Challenges for a Sustainable Energy Future, Nature,Storage, Renewable and Sustainable Energy Reviews, 14 (3),

Coso, Dusan

2013-01-01T23:59:59.000Z

94

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

Organometallic Frames for Solar Energy Storage, Berkeley. [and Photovoltaic Solar Energy Converters, American ChemicalNocera D. G. , 2010, Solar Energy Supply and Storage for

Coso, Dusan

2013-01-01T23:59:59.000Z

95

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

collectors," Journal of Solar Energy Engineering, vol. 121,receivers," Journal of Solar Energy Engineering, vol. 117,Towers," ASME Journal of Solar Energy Engineering, vol. 129,

Ho, Tony

2012-01-01T23:59:59.000Z

96

Wave Energy Conversion Technology  

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

Wave Energy Conversion Technology Wave Energy Conversion Technology Speaker(s): Mirko Previsic Date: August 2, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Julie Osborn Scientists have been working on wave power conversion for the past twenty years, but recent advances in offshore and IT technologies have made it economically competitive. Sea Power & Associates is a Berkeley-based renewable energy technology company. We have developed patented technology to generate electricity from ocean wave energy using a system of concrete buoys and highly efficient hydraulic pumps. Our mission is to provide competitively priced, non-polluting, renewable energy for coastal regions worldwide. Mirko Previsic, founder and CEO, of Sea Power & Associates will discuss ocean wave power, existing technologies for its conversion into

97

Conceptual design of an open-cycle ocean thermal energy conversion net power-producing experiment (OC-OTEC NPPE)  

DOE Green Energy (OSTI)

This report describes the conceptual design of an experiment to investigate heat and mass transfer and to assess the viability of open-cycle ocean thermal energy conversion (OC-OTEC). The experiment will be developed in two stages, the Heat- and Mass-Transfer Experimental Apparatus (HMTEA) and the Net Power-Producing Experiment (NPPE). The goal for the HMTEA is to test heat exchangers. The goal for the NPPE is to experimentally verify OC-OTEC's feasibility by installing a turbine and testing the power-generating system. The design effort met the goals of both the HMTEA and the NPPE, and duplication of hardware was minimal. The choices made for the design resource water flow rates are consistent with the availability of cold and warm seawater as a result of the seawater systems upgrade carried out by the US Department of Energy (DOE), the state of Hawaii, and the Pacific International Center for High Technology Research. The choices regarding configuration of the system were made based on projected performance, degree of technical risk, schedule, and cost. The cost for the future phase of the design and the development of the HMTEA/NPPE is consistent with the projected future program funding levels. The HMTEA and NPPE were designed cooperatively by PICHTR, Argonne National Laboratory, and Solar Energy Research Institute under the guidance of DOE. The experiment will be located at the DOE's Seacoast Test Facility at the Natural Energy Laboratory of Hawaii, Kailua-Kona, Hawaii. 71 refs., 41 figs., 34 tabs.

Bharathan, D.; Green, H.J.; Link, H.F.; Parsons, B.K.; Parsons, J.M.; Zangrando, F.

1990-07-01T23:59:59.000Z

98

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

c,e Low-Intermediate Gas turbine exhaust, boiler exhaust,cycles for micro-gas turbines," Applied Thermal Engineering,Tiba, "Optimization of gas-turbine combined cycles for solar

Ho, Tony

2012-01-01T23:59:59.000Z

99

Phase 1: conceptual design. Ocean thermal energy conversion power system development. Volume 2 of 3. Technical details. Final report  

DOE Green Energy (OSTI)

Westinghouse has completed the conceptual design of the Power System for the Ocean Thermal Energy Conversion (OTEC) Demonstration Plant project. This study included the development of a conceptual design for the following three items: first, a full-size power system module for the 100 MWe Demonstration Plant; second, a scaled proof of concept power system; and third, a heat exchanger test article. The study was limited to a closed cycle ammonia power system module, using a water temperature difference of 40/sup 0/F., and a surface platform/ship reference hull. Two power module of 50 MWe each are recommended for the demonstration plant. The 50 MWe module was selected since it has the lowest cost, and since it is of a size which convincingly demonstrates that future economically viable commercial plants, having reliable operation with credible anticipated costs, are possible. A modular, tube bundle approach to heat exchanger design makes large heat exchangers practical and economical. Other power module elements are considered to be within state-of-practice. Technological assessments of all subsystems indicate requirements for verification only, rather than continued research. A complete test program, which will verify the mechanical reliability as well as thermal performance, is recommended.

Not Available

1978-01-30T23:59:59.000Z

100

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

159] B Sternlicht, "Waste energy recover: an excellentThis high quality waste energy though has the potential torecovery of low-grade waste heat," Energy, vol. 22, pp. 661-

Ho, Tony

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Uncertainty analysis routine for the Ocean Thermal Energy Conversion (OTEC) biofouling measurement device and data reduction procedure. [HTCOEF code  

DOE Green Energy (OSTI)

Biofouling and corrosion of heat exchanger surfaces in Ocean Thermal Energy Conversion (OTEC) systems may be controlling factors in the potential success of the OTEC concept. Very little is known about the nature and behavior of marine fouling films at sites potentially suitable for OTEC power plants. To facilitate the acquisition of needed data, a biofouling measurement device developed by Professor J. G. Fetkovich and his associates at Carnegie-Mellon University (CMU) has been mass produced for use by several organizations in experiments at a variety of ocean sites. The CMU device is designed to detect small changes in thermal resistance associated with the formation of marine microfouling films. An account of the work performed at the Pacific Northwest Laboratory (PNL) to develop a computerized uncertainty analysis for estimating experimental uncertainties of results obtained with the CMU biofouling measurement device and data reduction scheme is presented. The analysis program was written as a subroutine to the CMU data reduction code and provides an alternative to the CMU procedure for estimating experimental errors. The PNL code was used to analyze sample data sets taken at Keahole Point, Hawaii; St. Croix, the Virgin Islands; and at a site in the Gulf of Mexico. The uncertainties of the experimental results were found to vary considerably with the conditions under which the data were taken. For example, uncertainties of fouling factors (where fouling factor is defined as the thermal resistance of the biofouling layer) estimated from data taken on a submerged buoy at Keahole Point, Hawaii were found to be consistently within 0.00006 hr-ft/sup 2/-/sup 0/F/Btu, while corresponding values for data taken on a tugboat in the Gulf of Mexico ranged up to 0.0010 hr-ft/sup 2/-/sup 0/F/Btu. Reasons for these differences are discussed.

Bird, S.P.

1978-03-01T23:59:59.000Z

102

Direct energy conversion systems  

SciTech Connect

The potential importance of direct energy conversion to the long-term development of fusion power is discussed with stress on the possibility of alleviating waste heat problems. This is envisioned to be crucial for any central power station in the 21st century. Two approaches to direct conversion, i.e., direct collection and magnetic expansion, are reviewed. While other techniques may be possible, none have received sufficient study to allow evaluation. It is stressed that, due to the intimate connection between the type of fusion fuel, the confinement scheme, direct conversion, and the coupling technique, all four element must be optimized simultaneously for high overall efficiency.

Miley, G.H.

1978-01-01T23:59:59.000Z

103

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

Energy Storage for Power Generation. Part 1Concepts,effectively. Thus, in power generation systems, phase changeIn addition to power generation, phase change heat transfer

Coso, Dusan

2013-01-01T23:59:59.000Z

104

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network (OSTI)

of low-grade heat," Renewable and Sustainable Energyof various applications," Renewable and Sustainable Energyorganic Rankine cycle," Renewable Energy, vol. 4, pp. 1196-

Ho, Tony

2012-01-01T23:59:59.000Z

105

Photovoltaic Energy Conversion  

E-Print Network (OSTI)

Photovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel Buy Solar Energy Stocks? Make Photovoltaics your Profession! #12;Challenges Make solar cells more and fossil fuel depletion problems! #12;Photovoltaics: Explosive Growth #12;Take Advantage of Solar Megatrend

Glashausser, Charles

106

Ocean thermal energy conversion power system development-I. Phase I. Preliminary design report. Volume 1. Final report  

DOE Green Energy (OSTI)

The results of a conceptual and preliminary design study of Ocean Thermal Energy Conversion (OTEC) closed loop ammonia power system modules performed by Lockheed Missiles and Space Company, Inc. (LMSC) are presented. This design study is the second of 3 tasks in Phase I of the Power System Development-I Project. The Task 2 objectives were to develop: 1) conceptual designs for a 40 to 50-MW(e) closed cycle ammonia commercial plant size power module whose heat exchangers are immersed in seawater and whose ancillary equipments are in a shirt sleeve environment; preliminary designs for a modular application power system sized at 10-MW(e) whose design, construction and material selection is analogous to the 50 MW(e) module, except that titanium tubes are to be used in the heat exchangers; and 3) preliminary designs for heat exchanger test articles (evaporator and condenser) representative of the 50-MW(e) heat exchangers using aluminum alloy, suitable for seawater service, for testing on OTEC-1. The reference ocean platform was specified by DOE as a surface vessel with the heat exchanger immersed in seawater to a design depth of 0 to 20 ft measured from the top of the heat exchanger. For the 50-MW(e) module, the OTEC 400-MW(e) Plant Ship, defined in the Platform Configuration and Integration study, was used as the reference platform. System design, performance, and cost are presented. (WHK)

Not Available

1978-12-18T23:59:59.000Z

107

The effect of biofouling in simulated Ocean Thermal Energy Conversion (OTEC) evaporator tubes at a potential site in Puerto Rico  

SciTech Connect

Since 29 January 1980, continuous flow of ocean surface water has been maintained through simulated Ocean Thermal Energy Conversion (OTEC) evaporator tubes in order to determine in situ, long-term effects of microbiofouling on heat exchanger efficiency. The experimental apparatus consists of two aluminum and two titanium modules mounted on a research platform moored at the potential OTEC site off Punta Tuna, Puerto Rico. The fouling resistance (R /SUB f/ ), a relative measure of heat transfer efficiency, is being monitored regularly, and the units have been cleaned four times. Postcleaning fouling rates (dR /SUB f/ /dt) for the aluminum units have not changed significantly but are considerably higher than the initial fouling rates. At first, post-cleaning fouling rates for the titanium units were less than for the aluminum units, but this value has been progressively increasing and now all units are fouling at approximately the same rate. Cleaning with manually operated M.A.N. brushes did not reduce R /SUB f/ to zero. On four occasions, flow velocity through the units has been increased. Results from these experiments suggest that initially the fouling layer is easily dislodged from the tube surface but that, with time, it becomes more firmly attached.

Sasscer, D.S.; Morgan, T.O.; Tosteson, T.R.

1980-12-01T23:59:59.000Z

108

Study of domestic social and economic impacts of ocean thermal energy conversion (OTEC) commercial development. Volume II. Industry profiles  

DOE Green Energy (OSTI)

Econoimc profiles of the industries most affected by the construction, deployment, and operation of Ocean Thermal Energy Conversion (OTEC) powerplants are presented. Six industries which will contribute materials and/or components to the construction of OTEC plants have been identified and are profiled here. These industries are: steel industry, concrete industry, titanium metal industry, fabricated structural metals industry, fiber glass-reinforced plastics industry, and electrical transmission cable industry. The economic profiles for these industries detail the industry's history, its financial and economic characteristics, its technological and production traits, resource constraints that might impede its operation, and its relation to OTEC. Some of the historical data collected and described in the profile include output, value of shipments, number of firms, prices, employment, imports and exports, and supply-demand forecasts. For most of the profiled industries, data from 1958 through 1980 were examined. In addition, profiles are included on the sectors of the economy which will actualy construct, deploy, and supply the OTEC platforms.

None

1981-12-22T23:59:59.000Z

109

Ocean thermal energy conversion gas desorption studies. Volume 1. Design of experiments. [Open-cycle power systems  

Science Conference Proceedings (OSTI)

Seawater deaeration is a process affecting almost all proposed Ocean Thermal Energy Conversion (OTEC) open-cycle power systems. If the noncondensable dissolved air is not removed from a power system, it will accumulate in thecondenser, reduce the effectiveness of condensation, and result in deterioration of system performance. A gas desorption study is being conducted at Oak Ridge National Laboratory (ORNL) with the goal of mitigating these effects; this study is designed to investigate the vacuum deaeration process for low-temperature OTEC conditions where conventional steam stripping deaeration may not be applicable. The first in a series describing the ORNL studies, this report (1) considers the design of experiments and discusses theories of gas desorption, (2) reviews previous relevant studies, (3) describes the design of a gas desorption test loop, and (4) presents the test plan for achieving program objectives. Results of the first series of verification tests and the uncertainties encountered are also discussed. A packed column was employed in these verification tests and test data generally behaved as in previous similar studies. Results expressed as the height of transfer unit (HTU) can be correlated with the liquid flow rate by HTU = 4.93L/sup 0/ /sup 25/. End effects were appreciable for the vacuum deaeration system, and a correlation of them to applied vacuum pressure was derived.

Golshani, A.; Chen, F.C.

1980-10-01T23:59:59.000Z

110

Solar-thermal energy conversion and storage: cyclohexane dehydrogenation. Progress report, 30 September 1977-30 June 1978  

DOE Green Energy (OSTI)

The objective of this project is to provide research support for the benzene/cyclohexane heat pipe development program at Sandia. The kinetics of the cyclohexane decomposition (energy collection) reaction over a commercially available naphtha reforming catalyst (RD-150, Englehard Industries) in the temperature range 400 to 800/sup 0/F and pressures of 1 to 40 atmospheres were measured. Significant amounts of side products such as toluene and butane were identified at temperatures above 550/sup 0/F at atmospheric pressure and significant mass transfer limitations on conversions were observed at the higher space velocities and higher temperatures. No significant decreases in catalyst activity were measured at temperatures below 800/sup 0/F. However, at 800/sup 0/F there was a significant decrease in catalyst activity which does not appear to be a poisoning problem but a thermal limitation on catalyst effectiveness. A test facility has been fabricated to study the behavior of the benzene/cyclohexane (or any other gas phase catalytic reaction) system and its catalysts under long term cycling at temperatures up to 1000/sup 0/F, and pressures up to 1000 psig at a wide variety of space velocities. A mathematical model was developed which simulates the dynamic behavior of the collector (endothermic) reactor and allows the evaluation of such things as startup, shutdown, switching and process control algorithms.

Ritter, A.B.; DeLancey, G.B.; Schneider, J.; Silla, H.

1978-07-01T23:59:59.000Z

111

Results of scoping tests for open-cycle OTEC (ocean thermal energy conversion) components operating with seawater  

DOE Green Energy (OSTI)

This report presents comprehensive documentation of the experimental research conducted on open-cycle ocean thermal energy conversion (OC-OTEC) components operating with seawater as a working fluid. The results of this research are presented in the context of previous analysis and fresh-water testing; they provide a basis for understanding and predicting with confidence the performance of all components of an OC-OTEC system except the turbine. Seawater tests have confirmed the results that were obtained in fresh-water tests and predicted by the analytical models of the components. A sound technical basis has been established for the design of larger systems in which net power will be produced for the first time from OC-OTEC technology. Design and operation of a complete OC-OTEC system that produces power will provide sufficient confidence to warrant complete transfer of OC-OTEC technology to the private sector. Each components performance is described in a separate chapter written by the principal investigator responsible for technical aspects of the specific tests. Chapters have been indexed separately for inclusion on the data base.

Zangrando, F; Bharathan, D; Green, H J; Link, H F; Parsons, B K; Parsons, J M; Pesaran, A A [Solar Energy Research Inst., Golden, CO (USA); Panchal, C B [Argonne National Lab., IL (USA)

1990-09-01T23:59:59.000Z

112

Conversion factors for energy equivalents  

Science Conference Proceedings (OSTI)

... Conversion factors for energy equivalents, For your convenience, you may convert energies online below. Or display factors as: ...

113

Session: Energy Conversion  

DOE Green Energy (OSTI)

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Hydrothermal Energy Conversion Technology'' by David Robertson and Raymond J. LaSala; ''Materials for Geothermal Production'' by Lawrence E. Kukacka; ''Supersaturated Turbine Expansions for Binary Geothermal Power Plants'' by Carl J. Bliem; ''Geothermal Waster Treatment Biotechnology: Progress and Advantages to the Utilities'' by Eugen T. Premuzic; and ''Geothermal Brine Chemistry Modeling Program'' by John H. Weare.

Robertson, David; LaSala, Raymond J.; Kukacka, Lawrence E.; Bliem, Carl J.; Premuzic, Eugene T.; Weare, John H.

1992-01-01T23:59:59.000Z

114

Power system development: Ocean Thermal Energy Conversion (OTEC). Preliminary design report: appendices, Part 2 (Final)  

DOE Green Energy (OSTI)

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC demonstration plant. In turn, this demonstration plant is to demonstrate, by 1984, the operation and performance of an Ocean Thermal Power Plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the demonstration plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibilty studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report contains appendices on the electrical system, instrumentation and control, ammonia pump evaluation study, ammonia and nitrogen support subsystems, piping and support design calculations, and plant availability. (WHK)

None

1978-12-04T23:59:59.000Z

115

Ocean thermal energy conversion (OTEC) power system development. Preliminary design report, Appendices, Part 1 (Final)  

DOE Green Energy (OSTI)

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC demonstration plant. In turn, this demonstration plant is to demonstrate, by 1984, the operation and performance of an Ocean Thermal Power Plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the demonstration plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibilty studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report contains appendices on the developed computer models, water system dynamic studies, miscellaneous performance analysis, materials and processes, detailed equipment lists, turbine design studies, tube cleaner design, ammonia leak detection, and heat exchanger design supporting data. (WHK)

Not Available

1978-12-04T23:59:59.000Z

116

Thermal Conversion Factor Source Documentation  

U.S. Energy Information Administration (EIA)

national annual quantity-weighted average conversion factors for conventional, reformulated, and oxygenated motor gasolines (see Table A3). The factor ...

117

Ocean Thermal Energy Conversion (OTEC) test facilities study program. Final report. Volume II. Part A  

DOE Green Energy (OSTI)

Results are presented of an 8-month study to develop alternative non-site-specific OTEC facilities/platform requirements for an integrated OTEC Test Program which may include land and floating test facilities. The document, Volume II - Appendixes is bound in three parts (A, B, and C) which together comprise a compendium of the most significant detailed data developed during the study. Part A contains definitions, baseline revisions, test plans, and energy utilization sections.

Not Available

1977-01-17T23:59:59.000Z

118

Energy Conversion, Storage, and Transport News  

Science Conference Proceedings (OSTI)

NIST Home > Energy Conversion, Storage, and Transport News. Energy Conversion, Storage, and Transport News. (showing ...

2010-10-26T23:59:59.000Z

119

Energy Conversion, Storage, and Transport Portal  

Science Conference Proceedings (OSTI)

NIST Home > Energy Conversion, Storage, and Transport Portal. Energy Conversion, Storage, and Transport Portal. Programs ...

2013-04-08T23:59:59.000Z

120

Model Energy Conversion Efficiency of Biological Systems  

Science Conference Proceedings (OSTI)

MML Researchers Model Energy Conversion Efficiency of Biological Systems. Novel, highly efficient energy conversion ...

2013-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Ocean Thermal Energy Conversion (OTEC) test facilities study program. Final report. Volume II. Part C  

DOE Green Energy (OSTI)

Results are presented of an 8-month study to develop alternative non-site-specific OTEC facilities/platform requirements for an integrated OTEC Test Program which may include land and floating test facilities. Volume II--Appendixes is bound in three parts (A, B, and C) which together comprise a compendium of the most significant detailed data developed during the study. Part C describes test facility support, data acquisition and control system design, cost data, energy self-sufficiency, and test facility applications.

None

1977-01-17T23:59:59.000Z

122

Ocean thermal energy conversion (OTEC). Power system development. Preliminary design report, final  

DOE Green Energy (OSTI)

The preliminary design of the 10 MWe OTEC power module and the 200 kWe test articles is given in detail. System operation and performance; power system cost estimates; 10 MWe heat exchangers; 200 kWe heat exchanger articles; biofouling control;ammonia leak detection, and leak repair; rotating machinery; support subsystem; instrumentation and control; electrical subsystem; installation approach; net energy and resource analysis; and operability, maintainability, and safety are discussed. The conceptual design of the 40 MWe electrical power system includes four or five 10 MWe modules as designed for the 10 MWe pilot plant. (WHK)

Not Available

1978-12-04T23:59:59.000Z

123

ENERGY CONVERSION Spring 2011  

E-Print Network (OSTI)

in this course: Week 1: Review Week 2: Entropy and exergy Week 3: Power cycles, Otto and Diesel Week 4 resources including: wind, wave energy conversion devices, and fuel cell technologies Week12: Introduction will work in groups as assigned. Experiment: Diesel Engine Assessment: Projects 20% Lab Reports

Bahrami, Majid

124

Ocean Thermal Energy Conversion (OTEC) test facilities study program. Final report. Volume I  

DOE Green Energy (OSTI)

A comprehensive test program has been envisioned by ERDA to accomplish the OTEC program objectives of developing an industrial and technological base that will lead to the commercial capability to successfully construct and economically operate OTEC plants. This study was performed to develop alternative non-site specific OTEC test facilities/platform requirements for an integrated OTEC test program including both land and floating test facilities. A progression of tests was established in which OTEC power cycle component designs proceed through advanced research and technology, component, and systems test phases. This progression leads to the first OTEC pilot plant and provides support for following developments which potentially reduce the cost of OTEC energy. It also includes provisions for feedback of results from all test phases to enhance modifications to existing designs or development of new concepts. The tests described should be considered as representative of generic types since specifics can be expected to change as the OTEC plant design evolves. Emphasis is placed on defining the test facility which is capable of supporting the spectrum of tests envisioned. All test support facilities and equipment have been identified and included in terms of space, utilities, cost, schedule, and constraints or risks. A highly integrated data acquisition and control system has been included to improve test operations and facility effectiveness through a centralized computer system capable of automatic test control, real-time data analysis, engineering analyses, and selected facility control including safety alarms. Electrical power, hydrogen, and ammonia are shown to be technically feasible as means for transmitting OTEC power to a land-based distribution point. (WHK)

None

1977-01-17T23:59:59.000Z

125

Biomass thermal conversion research at SERI  

DOE Green Energy (OSTI)

SERI's involvement in the thermochemical conversion of biomass to fuels and chemicals is reviewed. The scope and activities of the Biomass Thermal Conversion and Exploratory Branch are reviewed. The current status and future plans for three tasks are presented: (1) Pyrolysis Mechanisms; (2) High Pressure O/sub 2/ Gasifier; and (3) Gasification Test Facility.

Milne, T. A.; Desrosiers, R. E.; Reed, T. B.

1980-09-01T23:59:59.000Z

126

OCEAN THERMAL ENERGY CONVERSION PRELIMINARY DATA REPORT FOR THE NOVEMBER 1977 GOTEC-02 CRUISE TO THE GULF OF MEXICO MOBILE SITE  

E-Print Network (OSTI)

Energy Conversion (OTEC) sites in the Gulf of Mexico. TheENERGY CONVERSION PRELIMINARY DATA REPORT FOR THE NOVEMBER 1977 GOTEC-02 CRUISE TO THE GULF OF MEXICOEnergy Conversion (OTEC) Sites: Puerto Rico, St. Croix and Northern Gulf of Mexico.

Commins, M.L.

2010-01-01T23:59:59.000Z

127

Thermal-Electric Conversion Efficiency of the Dish/AMTEC Solar Thermal Power System in Wind Condition  

Science Conference Proceedings (OSTI)

The dish/AMTEC solar thermal power system is a newly proposed solar energy utilization system that enables the direct thermal-electric conversion. The performance of the solar dish/AMTEC system in wind condition has been theoretically evaluated in addition ... Keywords: dish/AMTEC solar thermal power system, efficiency, thermal-electric conversion, wind condition

Lan Xiao; Shuang-Ying Wu; You-Rong Li

2012-07-01T23:59:59.000Z

128

Wind energy conversion system  

DOE Patents (OSTI)

The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

Longrigg, Paul (Golden, CO)

1987-01-01T23:59:59.000Z

129

Thermal Conversion of Methane to Acetylene  

DOE Green Energy (OSTI)

This report describes the experimental demonstration of a process for the direct thermal conversion of methane to acetylene. The process utilizes a thermal plasma heat source to dissociation products react to form a mixture of acetylene and hydrogen. The use of a supersonic expansion of the hot gas is investigated as a method of rapidly cooling (quenching) the product stream to prevent further reaction or thermal decomposition of the acetylene which can lower the overall efficiency of the process.

Fincke, James Russell; Anderson, Raymond Paul; Hyde, Timothy Allen; Wright, Randy Ben; Bewley, Randy Lee; Haggard, Delon C; Swank, William David

2000-01-01T23:59:59.000Z

130

Energy Conversion/Fuel Cells  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, Materials Science & Technology 2011. Symposium, Energy Conversion/Fuel Cells. Sponsorship, MS&T Organization.

131

Semiconductor Nanowires and Nanotubes for Energy Conversion  

E-Print Network (OSTI)

notably energy conversion. As research continues in thisnanowires for energy conversion. Chemical Reviews, 2010.for solar energy conversion. Physical Review Letters, 2004.

Fardy, Melissa Anne

2010-01-01T23:59:59.000Z

132

Review and summary of Solar Thermal Conversion Program planning assistance  

DOE Green Energy (OSTI)

The Solar Thermal Conversion Program comprises a major part of the national solar energy program which must be continuously reviewed and modified where necessary. Modifications are typically required to reflect technical achievements and uncertainties which arise from within the program or from other technical programs, changes in budgets available for supporting the program as well as internal program funding priorities, changing goals such as through acceleration or stretch-out of the program schedule, significant organizational changes involving responsible governmental agencies, the introduction of new project management support contractors, and required budget or schedule changes occurring within individual projects that make up the Solar Thermal Conversion Program. The Aerospace Corporation has provided data to assist in planning, review, coordination, and documentation of the overall Solar Thermal Conversion Program. The Solar Thermal Conversion Program Plan is described in detail. Sections 2.0 through 5.0 cover the discussion and detail planning covering the objectives, justification, basic and alternative plans, budgets, and schedules for the Solar Thermal sub-unit portion of the Solar Electric Applications effort. Appendices B1, B2, and B3 include the March 21, March 28, and April 5, 1975, Program Plan submissions of the complete Solar Electric Applications effort. In Appendix B the Solar Thermal, Solar Photovoltaic, Wind Energy, and Ocean Thermal sub-unit texts have been condensed and formatted for integration in the overall ERDA budget package. (WHK)

Not Available

1975-06-01T23:59:59.000Z

133

Energy conversion system  

DOE Patents (OSTI)

The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weathproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction and operational with a minimal power draw.

Murphy, L.M.

1985-09-16T23:59:59.000Z

134

Energy conversion system  

DOE Patents (OSTI)

The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weatherproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction, and operational with a minimal power draw.

Murphy, Lawrence M. (Lakewood, CO)

1987-01-01T23:59:59.000Z

135

Basis of conversion factors for energy equivalents  

Science Conference Proceedings (OSTI)

... Basis of conversion factors for energy equivalents Conversion factors for energy equivalents are derived from the following relations: ...

136

Conversion factors for energy equivalents: All factors  

Science Conference Proceedings (OSTI)

... Conversion factors for energy equivalents Return to online conversions. Next page of energy equivalents. Definition of uncertainty ...

137

AQUIFER THERMAL ENERGY STORAGE  

E-Print Network (OSTI)

aquifers for thermal energy storage. Problems outlined aboveModeling of Thermal Energy Storage in Aquifers," Proceed-ings of Aquifer Thermal Energy Storage Workshop, Lawrence

Tsang, C.-F.

2011-01-01T23:59:59.000Z

138

AQUIFER THERMAL ENERGY STORAGE  

E-Print Network (OSTI)

using aquifers for thermal energy storage. Problems outlinedmatical Modeling of Thermal Energy Storage in Aquifers,"Proceed- ings of Aquifer Thermal Energy Storage Workshop,

Tsang, C.-F.

2011-01-01T23:59:59.000Z

139

Energy Basics: Biofuel Conversion Processes  

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

from the EERE Bioenergy Technologies Office. Thermochemical Conversion Processes Heat energy and chemical catalysts can be used to break down biomass into intermediate compounds...

140

LABORATORY VI ENERGY AND THERMAL PROCESSES  

E-Print Network (OSTI)

LABORATORY VI ENERGY AND THERMAL PROCESSES Lab VI - 1 The change of the internal energy of a system temperature by sweating to cool down. Running seems to be the conversion of chemical energy to thermal energy energy into thermal energy, you decide to make some measurements in the laboratory. To make

Minnesota, University of

Note: This page contains sample records for the topic "thermal energy conversion" 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

Hydrothermal Energy Conversion Technology  

SciTech Connect

The goal of the Hydrothermal Program is to develop concepts which allow better utilization of geothermal energy to reduce the life-cycle cost of producing electricity from liquid-dominated, hydrothermal resources. Research in the program is currently ongoing in three areas: (1) Heat Cycle Research, which is looking at methods to increase binary plant efficiencies; (2) Materials Development, which is developing materials for use in geothermal associated environments; and (3) Advanced Brine Chemistry, with work taking place in both the brine chemistry modeling area and waste disposal area. The presentations during this session reviewed the accomplishments and activities taking place in the hydrothermal energy conversion program. Lawrence Kukacka, Brookhaven National Laboratory, discussed advancements being made to develop materials for use in geothermal applications. This research has identified a large number of potential materials for use in applications from pipe liners that inhibit scale buildup and reduce corrosion to elastomers for downhole use. Carl J. Bliem, Idaho National Engineering Laboratory, discussed preparations currently underway to conduct field investigations of the condensation behavior of supersaturated turbine expansions. The research will evaluate whether the projected 8% to 10% improvement in brine utilization can be realized by allowing these expansions. Eugene T. Premuzic, Brookhaven National Laboratory, discussed advancements being made using biotechnology for treatment of geothermal residual waste; the various process options were discussed in terms of biotreatment variables. A treatment scenario and potential disposal costs were presented. John H. Weare, University of California, San Diego, discussed the present capabilities of the brine chemistry model he has developed for geothermal applications and the information it can provide a user. This model is available to industry. The accomplishments from the research projects presented in this session have been many. It is hoped that these accomplishments can be integrated into industrial geothermal power plant sites to assist in realizing the goal of reducing the cost of energy produced from the geothermal resource.

Robertson, David W.; LaSala, Raymond J.

1992-03-24T23:59:59.000Z

142

Vehicle Technologies Office: Solid State Energy Conversion  

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

Energy Conversion to someone by E-mail Share Vehicle Technologies Office: Solid State Energy Conversion on Facebook Tweet about Vehicle Technologies Office: Solid State Energy...

143

Will lecture on: Understanding and Controlling Solar Energy Conversion  

E-Print Network (OSTI)

Will lecture on: Understanding and Controlling Solar Energy Conversion: The relationship between, and their relationship to their ability to harvest solar energy in the form of electricity. In particular, morphology low carbon electricity (solar and thermal energy conversion, off-shore wind, biofuels, nuclear

Rimon, Elon

144

Seasonal thermal energy storage  

DOE Green Energy (OSTI)

This report describes the following: (1) the US Department of Energy Seasonal Thermal Energy Storage Program, (2) aquifer thermal energy storage technology, (3) alternative STES technology, (4) foreign studies in seasonal thermal energy storage, and (5) economic assessment.

Allen, R.D.; Kannberg, L.D.; Raymond, J.R.

1984-05-01T23:59:59.000Z

145

Ocean thermal energy conversion preliminary data report for the November 1977 GOTEC-02 cruise to the Gulf of Mexico Mobile Site  

DOE Green Energy (OSTI)

This is the second in a series of preliminary data reports from cruises to potential Ocean Thermal Energy Conversion (OTEC) sites in the Gulf of Mexico. The data are from the GOTEC-02 cruise to a site at approximately 29/sup 0/N, 88/sup 0/W, the Mobile Site. Twelve oceanographic stations were visited. Due to bad weather, the results are scanty. The reader will note that much of the data is questionable. Current meter results are presented elsewhere (Molinari, Hazelworth and Ortman, 1979). Determinations of the biomass indicators - chlorophyll a, phaeophytins and adenosine triphosphate - and zooplankton, are presented. Results were generally those that might have been predicted from previous studies in the area.

Not Available

1980-03-01T23:59:59.000Z

146

Converse, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Page Edit with form History Facebook icon Twitter icon Converse, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

147

Vehicle Technologies Office: Solid State Energy Conversion  

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

Solid State Energy Conversion The Solid State Energy Conversion R&D activity is focused on developing advanced thermoelectric technologies for utilizing engine waste heat by...

148

Thermal to electricity conversion using thermal magnetic properties  

DOE Patents (OSTI)

A system for the generation of Electricity from Thermal Energy using the thermal magnetic properties of a Ferromagnetic, Electrically Conductive Material (FECM) in one or more Magnetic Fields. A FECM is exposed to one or more Magnetic Fields. Thermal Energy is applied to a portion of the FECM heating the FECM above its Curie Point. The FECM, now partially paramagnetic, moves under the force of the one or more Magnetic Fields. The movement of the FECM induces an electrical current through the FECM, generating Electricity.

West, Phillip B [Idaho Falls, ID; Svoboda, John [Idaho Falls, ID

2010-04-27T23:59:59.000Z

149

Nanostructures for Energy Conversion  

Science Conference Proceedings (OSTI)

... These nanoelectrochemical energy systems hold particular promise for enabling ... photoelectrochemical cells for solar hydrogen production, fuel cells ...

2012-07-10T23:59:59.000Z

150

The conversion of biomass to ethanol using geothermal energy derived from hot dry rock to supply both the thermal and electrical power requirements  

SciTech Connect

The potential synergism between a hot dry rock (HDR) geothermal energy source and the power requirements for the conversion of biomass to fuel ethanol is considerable. In addition, combining these two renewable energy resources to produce transportation fuel has very positive environmental implications. One of the distinct advantages of wedding an HDR geothermal power source to a biomass conversion process is flexibility, both in plant location and in operating process is flexibility, both in plant location and in operating conditions. The latter obtains since an HDR system is an injection conditions of flow rate, pressure, temperature, and water chemistry are under the control of the operator. The former obtains since, unlike a naturally occurring geothermal resource, the HDR resource is very widespread, particularly in the western US, and can be developed near transportation and plentiful supplies of biomass. Conceptually, the pressurized geofluid from the HDR reservoir would be produced at a temperature in the range of 200{degrees} to 220{degrees}c. The higher enthalpy portion of the geofluid thermal energy would be used to produce a lower-temperature steam supply in a countercurrent feedwater-heater/boiler. The steam, following a superheating stage fueled by the noncellulosic waste fraction of the biomass, would be expanded through a turbine to produce electrical power. Depending on the lignin fraction of the biomass, there would probably be excess electrical power generated over and above plant requirements (for slurry pumping, stirring, solids separation, etc.) which would be available for sale to the local power grid. In fact, if the hybrid HDR/biomass system were creatively configured, the power plant could be designed to produce daytime peaking power as well as a lower level of baseload power during off-peak hours.

Brown, D.W.

1997-10-01T23:59:59.000Z

151

Energy Conversion Photovoltaic, Concentrating Solar Power, and ...  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, Materials Science & Technology 2012. Symposium, Energy Conversion Photovoltaic, Concentrating Solar Power, and ...

152

Energy Conversion and Storage Program  

DOE Green Energy (OSTI)

The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

Cairns, E.J.

1992-03-01T23:59:59.000Z

153

Solar energy conversion.  

SciTech Connect

The Sun provides Earth with a staggering amount of energy - enough to power the great oceanic and atmospheric currents, the cycle of evaporation and condensation that brings fresh water inland and drives river flow, and the typhoons, hurricanes, and tornadoes that so easily destroy the natural and built landscape. The San Francisco earthquake of 1906, with magnitude 7.8, released an estimated 10{sup 17} joules of energy, the amount the Sun delivers to Earth in one second. Earth's ultimate recoverable resource of oil, estimated at 3 trillion barrels, contains 1.7 x 10{sup 22} joules of energy, which the Sun supplies to Earth in 1.5 days. The amount of energy humans use annually, about 4.6 x 10{sup 20} joules, is delivered to Earth by the Sun in one hour. The enormous power that the Sun continuously delivers to Earth, 1.2 x 10{sup 5} terawatts, dwarfs every other energy source, renewable or nonrenewable. It dramatically exceeds the rate at which human civilization produces and uses energy, currently about 13 TW.

Crabtree, G. W.; Lewis, N. S.; Materials Science Division; Cal Tech

2007-03-01T23:59:59.000Z

154

Conversion Plan | Department of Energy  

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

Conversion Plan Conversion Plan This template is used to document the conversion plan that clearly defines the system or project's conversion procedures; outlines the installation...

155

Energy Storage, Transport, and Conversion in CNST  

Science Conference Proceedings (OSTI)

Energy Storage, Transport, and Conversion in CNST. Nanotribology ... Theory and Modeling of Materials for Renewable Energy. Nanostructures ...

2013-05-02T23:59:59.000Z

156

Ocean energy conversion systems annual research report  

DOE Green Energy (OSTI)

Alternative power cycle concepts to the closed-cycle Rankine are evaluated and those that show potential for delivering power in a cost-effective and environmentally acceptable fashion are explored. Concepts are classified according to the ocean energy resource: thermal, waves, currents, and salinity gradient. Research projects have been funded and reported in each of these areas. The lift of seawater entrained in a vertical steam flow can provide potential energy for a conventional hydraulic turbine conversion system. Quantification of the process and assessment of potential costs must be completed to support concept evaluation. Exploratory development is being completed in thermoelectricity and 2-phase nozzles for other thermal concepts. Wave energy concepts are being evaluated by analysis and model testing with present emphasis on pneumatic turbines and wave focussing. Likewise, several conversion approaches to ocean current energy are being evaluated. The use of salinity resources requires further research in membranes or the development of membraneless processes. Using the thermal resource in a Claude cycle process as a power converter is promising, and a program of R and D and subsystem development has been initiated to provide confirmation of the preliminary conclusion.

Not Available

1981-03-01T23:59:59.000Z

157

Ocean thermal energy conversion (OTEC) power system development (PSD) II. Preliminary design report. Appendix II: supporting data  

DOE Green Energy (OSTI)

The trade studies, calculations, and reports which provide the rationale for design conclusions for the 10 MWe OTEC power system are presented in this volume. These appendices include: (1) system design and optimization model; (2) system off-design performance computer model; (3) seawater system dynamics; (4) system mechanical design studies; (5) electrical design studies; (6) structural design studies; (7) tube cleaner design report and proposed brush test program; (8) heat exchangers: mechanical design; (9) heat exchangers: thermal hydraulic computer model; (10) heat exchangers: manufacturing flow plan; (11) heat exchangers: installation and removal procedures; (12) heat exchangers: stainless steel conceptual design; (13) heat exchangers: cost studies; (14)heat exchangers: materials selection and corrosion; and (15) heat exchangers: quality assurance. (WHK)

Not Available

1979-08-10T23:59:59.000Z

158

Conversion Spacetime in Energy  

E-Print Network (OSTI)

English: This article is a small part of a larger one that has been called TOP (Theory Of Potentials) and in which is shown broadly as energy can be obtained in various ways. Although what Nature does sometimes not be imitated, or at least as effectively. But it describes as it does. Appendices are also included in this article in order to understand certain details that without them you would understand, and the description of them is an experiment (in Appendix C) which dilates the period of an oscillator, causing decrease in frequency simply applying a voltage in the vicinity, and which coincides well with the theory. Spanish: Este artculo es una pequea porcin de otro ms grande que se ha dado en denominar TOP (Theory Of Potentials), y en el cual se demuestra ampliamente como se puede obtener energa de diversas maneras. Aunque lo que la naturaleza hace, a veces no se puede imitar, o al menos con tanta eficacia. Pero en l se describe como lo hace. Se incluyen adems los Apndices de dicho artculo, a fin de entender ciertos pormenores que sin ellos no se comprenderan, y en ellos est la descripcin de un experimento

Florentino Muiz Ania

2013-01-01T23:59:59.000Z

159

Ocean thermal energy conversion ecological data report from OSS Researcher in Gulf of Mexico, (GOTEC-01), July 12-23, 1977  

DOE Green Energy (OSTI)

Ecological measurements important for environmental assessment of the effect of an operating Ocean Thermal Energy Conversion plant were initiated in July 1977 at the proposed Gulf of Mexico site off the coasts of Louisiana, Mississippi, Alabama and Florida. The initial cruise of the OSS Researcher, in a joint effort with the Atlantic Oceanic and Meteorological Laboratories (AOML) of the National Oceanic and Atmospheric Administration (NOAA), and Lawrence Berkeley Laboratory (LBL) took place from 12 to 23 July 1977. The measurements were taken at 15 oceanographic stations to a maximum depth of 1000 m. Water was analyzed for trace metals, nutrients and chlorophyll a and ATP. Physical data, salinity and dissolved oxygen measurements were supplied by NOAA-AOML. Two bioassays were carried out using indigenous phytoplankton to estimate the effect of deep water on the rates of /sup 14/CO/sub 2/ uptake of photic zone algae. The Deep Scattering Layer (DSL) was monitored at the site by a continuously recording 12 kHz depth sounder at the Mobile site. This report presents data collected during the cruise.

Quinby-Hunt, M.S. (comp.)

1979-06-01T23:59:59.000Z

160

Minutes of the fifth meeting of the centers for the analysis of thermal-mechanical energy conversion concepts  

DOE Green Energy (OSTI)

The following are included: agenda, list of participants, executive summary, and approved minutes. The appendices include the figures for some of the discussions at the meeting and drafts of contributions to the Sourcebook on the Production of Electricity from Geothermal Energy. (MHR)

DiPippo, R.

1977-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Energy Basics: Biofuel Conversion Processes  

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

Biodiesel Biofuel Conversion Processes Biopower Bio-Based Products Biomass Resources Geothermal Hydrogen Hydropower Ocean Solar Wind Biofuel Conversion Processes The conversion of...

162

HEATS: Thermal Energy Storage  

SciTech Connect

HEATS Project: The 15 projects that make up ARPA-Es HEATS program, short for High Energy Advanced Thermal Storage, seek to develop revolutionary, cost-effective ways to store thermal energy. HEATS focuses on 3 specific areas: 1) developing high-temperature solar thermal energy storage capable of cost-effectively delivering electricity around the clock and thermal energy storage for nuclear power plants capable of cost-effectively meeting peak demand, 2) creating synthetic fuel efficiently from sunlight by converting sunlight into heat, and 3) using thermal energy storage to improve the driving range of electric vehicles (EVs) and also enable thermal management of internal combustion engine vehicles.

None

2012-01-01T23:59:59.000Z

163

Thermoelectric Ocean Thermal Energy Conversion  

DOE Green Energy (OSTI)

A novel thermoelectric OTEC concept is proposed and compared with the ammonia closed-cycle designs. The thermoelectric OTEC is a much simpler system which uses no working fluid and therefore requires no pressure vessel, working fluid pumps, or turbogenerator. These components are replaced by power modules which are heat exchangers integrated with thermoelectric generators. The thermoelectric OTEC offers several potential advantages including: simpler and more easily mass-produced components; higher reliability system performance through the use of a high level of redundancy and long-lived, solid-state thermoelectric generators; greater safety for crew and environment by elimination of the pressurized working fluid; and the possibility of lower system costs. These comparisons are discussed and plans for future work are presented.

Jayadev, T.S.; Benson, D.K.; Bohn, M.S.

1979-06-01T23:59:59.000Z

164

"Approaches to Ultrahigh Efficiency Solar Energy Conversion"...  

Office of Science (SC) Website

"Approaches to Ultrahigh Efficiency Solar Energy Conversion" Webinar Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News...

165

"Fundamental Challenges in Solar Energy Conversion" workshop...  

Office of Science (SC) Website

Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events...

166

Conversion factors for energy equivalents: All factors  

Science Conference Proceedings (OSTI)

... Previous page of energy equivalents. Definition of uncertainty notation eg, 123(45) | Basis of conversion factors for energy equivalents. Top. ...

167

Conversion system overview assessment. Volume III. Solar thermal/coal or biomass derived fuels  

SciTech Connect

The three volumes of this report cover three distinct areas of solar energy research: solar thermoelectrics, solar-wind hybrid systems, and synthetic fuels derived with solar thermal energy. Volume III deals with the conversion of synthetic fuels with solar thermal heat. The method is a hybrid combination of solar energy with either coal or biomass. A preliminary assessment of this technology is made by calculating the cost of fuel produced as a function of the cost of coal and biomass. It is shown that within the projected ranges of coal, biomass, and solar thermal costs, there are conditions when solar synthetic fuels with solar thermal heat will become cost-competitive.

Copeland, R. J.

1980-02-01T23:59:59.000Z

168

Explorations of Novel Energy Conversion and Storage Systems  

E-Print Network (OSTI)

of Novel Energy Conversion and Storage Systems By Andrewof Novel Energy Conversion and Storage Systems by Andrew

Duffin, Andrew Mark

2010-01-01T23:59:59.000Z

169

Thermal and non-thermal energies in solar flares  

E-Print Network (OSTI)

The energy of the thermal flare plasma and the kinetic energy of the non-thermal electrons in 14 hard X-ray peaks from 9 medium-sized solar flares have been determined from RHESSI observations. The emissions have been carefully separated in the spectrum. The turnover or cutoff in the low-energy distribution of electrons has been studied by simulation and fitting, yielding a reliable lower limit to the non-thermal energy. It remains the largest contribution to the error budget. Other effects, such as albedo, non-uniform target ionization, hot target, and cross-sections on the spectrum have been studied. The errors of the thermal energy are about equally as large. They are due to the estimate of the flare volume, the assumption of the filling factor, and energy losses. Within a flare, the non-thermal/thermal ratio increases with accumulation time, as expected from loss of thermal energy due to radiative cooling or heat conduction. Our analysis suggests that the thermal and non-thermal energies are of the same magnitude. This surprising result may be interpreted by an efficient conversion of non-thermal energy to hot flare plasma.

Pascal Saint-Hilaire; Arnold O. Benz

2005-03-03T23:59:59.000Z

170

Proceedings of the 25th intersociety energy conversion engineering conference  

SciTech Connect

This book contains the proceedings of the 25th Intersociety Energy Conversion Engineering Conference. Volume 5 is organized under the following headings: Photovoltaics I, Photovoltaics II, Geothermal power, Thermochemical conversion of biomass, Energy from waste and biomass, Solar thermal systems for environmental applications, Solar thermal low temperature systems and components, Solar thermal high temperature systems and components, Wind systems, Space power sterling technology Stirling cooler developments, Stirling solar terrestrial I, Stirling solar terrestrial II, Stirling engine generator sets, Stirling models and simulations, Stirling engine analysis, Stirling models and simulations, Stirling engine analysis, Stirling engine loss understanding, Novel engine concepts, Coal conversion and utilization, Power cycles, MHD water propulsion I, Underwater vehicle powerplants - performance, MHD underwater propulsion II, Nuclear power, Update of advanced nuclear power reactor concepts.

Nelson, P.A.; Schertz, W.W.; Till, R.H.

1990-01-01T23:59:59.000Z

171

Portfolio Manager Technical Reference: Thermal Conversion Factors...  

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

able to monitor electricity consumption on a continuous basis. Based on your particular energy suppliers and onsite systems, you may have a variety of different meter types that...

172

Thermal Energy Storage  

Science Conference Proceedings (OSTI)

This Technology Brief provides an update on the current state of cool thermal energy storage systems (TES) for end-use applications. Because of its ability to shape energy use, TES is strategic technology that allows end-users to reduce their energy costs while simultaneously providing benefits for electric utilities through persistent peak demand reduction and peak shifting. In addition to discussing the concepts of thermal energy storage, the Brief discusses the current state of TES technologies and dr...

2008-12-16T23:59:59.000Z

173

Nanowire silicon as a material for thermoelectric energy conversion  

Science Conference Proceedings (OSTI)

In order to use silicon as an efficient thermoelectric (TE) material for TE energy conversion, it is necessary to reduce its relatively high thermal conductivity, while maintaining the high power factor. This can be done by structuring silicon into 1-D ...

A. Stranz; J. Khler; S. Merzsch; A. Waag; E. Peiner

2012-08-01T23:59:59.000Z

174

Photonic Crystals for Enhancing Thermophotovoltaic Energy Conversion  

DOE Green Energy (OSTI)

Thermophotovoltaics (TPV) converts the radiant energy of a thermal source into electrical energy using photovoltaic cells. TPV has a number of attractive features, including: fuel versatility (nuclear, fossil, solar, etc.), quiet operation, low maintenance, low emissions, light weight, high power density, modularity, and possibility for cogeneration of heat and electricity. Some of these features are highly attractive for military applications (Navy and Army). TPV could also be used for distributed power and automotive applications wherever fuel cells, microturbines, or cogeneration are presently being considered if the efficiencies could be raised to around 30%. This proposal primarily examine approaches to improving the radiative efficiency. The ideal irradiance for the PV cell is monochromatic illumination at the bandgap. The photonic crystal approach allows for the tailoring of thermal emission spectral bandwidth at specific wavelengths of interest. The experimental realization of metallic photonic crystal structures, the optical transmission, reflection and absorption characterization of it have all been carried out in detail and will be presented next. Additionally, comprehensive models of TPV conversion has been developed and applied to the metallic photonic crystal system.

LIN, SHAWN-YU; FLEMING, JAMES G.; MORENO, JOSEPH A.

2003-03-01T23:59:59.000Z

175

Energy Calculator- Common Units and Conversions  

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

Energy Calculator - Common Units and Conversions Energy Calculator - Common Units and Conversions Calculators for Energy Used in the United States: Coal Electricity Natural Gas Crude Oil Gasoline Diesel & Heating Oil Coal Conversion Calculator Short Tons Btu Megajoules Metric Tons Clear Calculate 1 Short Ton = 20,169,000 Btu (based on U.S. consumption, 2007) Electricity Conversion Calculator KilowattHours Btu Megajoules million Calories Clear Calculate 1 KilowattHour = 3,412 Btu Natural Gas Conversion Calculator Cubic Feet Btu Megajoules Cubic Meters Clear Calculate 1 Cubic Foot = 1,028 Btu (based on U.S. consumption, 2007); 1 therm = 100,000 Btu; 1 terajoule = 1,000,000 megajoules Crude Oil Conversion Calculator Barrels Btu Megajoules Metric Tons* Clear Calculate 1 Barrel = 42 U.S. gallons = 5,800,000 Btu (based on U.S. consumption,

176

Thermal Energy Transport in Nanostructured Materials  

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

Thermal Energy Transport in Nanostructured Materials Thermal Energy Transport in Nanostructured Materials Speaker(s): Ravi Prasher Date: August 25, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Ashok Gadgil World energy demand is expected to reach ~30 TW by 2050 from the current demand of ~13 TW. This requires substantial technological innovation. Thermal energy transport and conversion play a very significant role in more than 90% of energy technologies. All four modes of thermal energy transport, conduction, convection, radiation, and phase change (e.g. evaporation/boiling) are important in various energy technologies such as vapor compression power plants, refrigeration, internal combustion engines and building heating/cooling. Similarly thermal transport play a critical role in electronics cooling as the performance and reliability of

177

Global Waste to Energy Conversion Company GWECC | Open Energy Information  

Open Energy Info (EERE)

Waste to Energy Conversion Company GWECC Waste to Energy Conversion Company GWECC Jump to: navigation, search Name Global Waste to Energy Conversion Company (GWECC) Place Washington, DC Product GWECC is a global alternative energy company headquartered in Washington DC, USA. References Global Waste to Energy Conversion Company (GWECC)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Global Waste to Energy Conversion Company (GWECC) is a company located in Washington, DC . References ↑ "Global Waste to Energy Conversion Company (GWECC)" Retrieved from "http://en.openei.org/w/index.php?title=Global_Waste_to_Energy_Conversion_Company_GWECC&oldid=345924" Categories: Clean Energy Organizations

178

Advanced Energy Conversion LLC AEC | Open Energy Information  

Open Energy Info (EERE)

Energy Conversion LLC (AEC) Place New York Zip 12020 Product R&D company focused on power electronics, motion control systems and embedded control. References Advanced Energy...

179

Rapid Solar-Thermal Conversion of Biomass to Syngas  

perform biomass gasification or pyrolysis for production of hydrogen, synthesis gas, liquid fuels, or other hydrocarbon based chemicals. The methods of the invention use solar thermal energy as the energy source for the biomass pyrolysis or ...

180

Utilizing Nature's Designs for Solar Energy Conversion  

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

Nature's Designs for Solar Energy Conversion Nature's Designs for Solar Energy Conversion Create new materials that: capture, convert, store sunlight Learn from Nature... ...build with chemistry ANL Photosynthesis Group Fundamental Studies  Solar energy conversion in natural and artificial photosynthesis Resolve mechanisms, design principles  Unique capabilities Time-resolved, multi-frequency EPR Time-resolved synchrotron X-ray Ultrafast spectroscopy Multi-molecular: Artificial systems for H 2 photocatalysis  Limitations:  Large solvent, molecular dependencies  Diffusion  Lifetimes  Uncontrolled back-reactions  Most PS contain noble metals  Organic solvent/high proton

Note: This page contains sample records for the topic "thermal energy conversion" 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

Energy Conversion & Storage Program, 1993 annual report  

DOE Green Energy (OSTI)

The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in: production of new synthetic fuels; development of high-performance rechargeable batteries and fuel cells; development of high-efficiency thermochemical processes for energy conversion; characterization of complex chemical processes and chemical species; and the study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

Cairns, E.J.

1994-06-01T23:59:59.000Z

182

Energy conversion & storage program. 1994 annual report  

DOE Green Energy (OSTI)

The Energy Conversion and Storage Program investigates state-of-the-art electrochemistry, chemistry, and materials science technologies for: (1) development of high-performance rechargeable batteries and fuel cells; (2) development of high-efficiency thermochemical processes for energy conversion; (3) characterization of complex chemical processes and chemical species; (4) study and application of novel materials for energy conversion and transmission. Research projects focus on transport process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

Cairns, E.J.

1995-04-01T23:59:59.000Z

183

Minutes of the eighth meeting of the centers for the analysis of thermal-mechanical energy conversion concepts. Report No. CATMEC/10  

SciTech Connect

Highlights of the meeting were discussions on the problem of waste heat rejection including the effects of noncondensable gases in geothermal power plants, a review of the state of the art in binary fluid geothermal power plants, and progress reports on the preparation of chapters and sections of the ''Sourcebook on the Production of Electricity from Geothermal Energy.'' Appendices are included with information on: the dry cooling enhancement program; condenser effects on Rankine cycle performance; waste heat rejection systems; effect on seasonal variations of ambient temperatures on the performance of low temperature power cycles; geothermal loop experimental facility fact sheet; Heber geothermal demonstration plant fact sheet; geothermal energy conversion systems using geofluids with high levels of noncondensable gases; analysis of East Mesa 16-29 well flow data; site-specific sub- and super-critical hybrid power cycles; novel hybrid fossil-geothermal power plants; total flow comparative cost studies; and, fact sheets on the geothermal component test facility, Magmamax dual binary power plant, and Cerro Prieto geothermal field and power plant. (JGB)

DiPippo, R.

1978-03-01T23:59:59.000Z

184

Minutes of the eighth meeting of the centers for the analysis of thermal-mechanical energy conversion concepts. Report No. CATMEC/10  

DOE Green Energy (OSTI)

Highlights of the meeting were discussions on the problem of waste heat rejection including the effects of noncondensable gases in geothermal power plants, a review of the state of the art in binary fluid geothermal power plants, and progress reports on the preparation of chapters and sections of the ''Sourcebook on the Production of Electricity from Geothermal Energy.'' Appendices are included with information on: the dry cooling enhancement program; condenser effects on Rankine cycle performance; waste heat rejection systems; effect on seasonal variations of ambient temperatures on the performance of low temperature power cycles; geothermal loop experimental facility fact sheet; Heber geothermal demonstration plant fact sheet; geothermal energy conversion systems using geofluids with high levels of noncondensable gases; analysis of East Mesa 16-29 well flow data; site-specific sub- and super-critical hybrid power cycles; novel hybrid fossil-geothermal power plants; total flow comparative cost studies; and, fact sheets on the geothermal component test facility, Magmamax dual binary power plant, and Cerro Prieto geothermal field and power plant. (JGB)

DiPippo, R.

1978-03-01T23:59:59.000Z

185

Hybrid staging of geothermal energy conversion process  

DOE Green Energy (OSTI)

Progress in the demonstration of the feasibility of hybrid staging in geothermal energy conversion is described, particularly processes involving the Lysholm engine. The performance limitations of the Lysholm engine were studied. (MHR)

Steidel, R.F. Jr.

1984-05-07T23:59:59.000Z

186

Energy Conversion | Global and Regional Solutions  

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

Energy Conversion Group Energy Conversion Group The Energy Conversion Group offers advanced technical solutions to achieve reduced fossil fuel use in geothermal power and building energy applications. Focus is on advanced materials, biofuel end use, combustion and system concepts. We seek to continuously improve the capabilities of relevant research tools being applied in collaborative initiatives to achieving these goals. Capabilities The group conducts research in a number of energy-related areas. These include advanced materials for geothermal energy, applications of biofuels and alternative fuels, efficiency in heating/cooling equipment, advanced oil burner development and particulate emissions for wood boilers. Advanced Materials for Geothermal Energy Supercritical carbon dioxide has properties midway between a gas and a

187

Comparison of Biological and Thermal (Pyrolysis) Pathways for Conversion of Lignocellulose to Biofuels  

E-Print Network (OSTI)

Because of the limited supply of imported crude oil and environmental degradation, renewable energy is becoming commercially feasible and environmentally desirable. In this research, biological and thermal (pyrolysis) conversion pathways for biofuel production from lignocellulosic feedstocks were compared. For biological conversions of sorghum, ethanol yield was improved using M81-E variety (0.072 g/g juice) over Umbrella (0.065 g/g juice) for first-generation biomass (sorghum juice), and 0.042 g/g sorghum was obtained from the cellulosic portion of second-generation biomass. When ultrasonication was combined with hot water pretreatment, yields increased by 15% and 7% for cellulose to glucose, and hemicellulose to pentose, respectively. Ethanol yield was 10% higher when this pretreatment was combined with Accellerase 1500+XC for saccharification. Biological conversion yielded 1,600?2,300 L ethanol/ha for first-generation biomass, and 4,300?4,500 L ethanol/ha from lignocellulosic biomass. For thermal (pyrolysis) conversion of lignocellulosic switchgrass at 600 degrees C, product yield was 37% bio-oil, 26% syngas, and 25% bio-char. At 400 degrees C, product yield was 22% bio-oil, 8% syngas, and 56% bio-char. Bio-oil from pyrolysis was highly oxygenated (37 wt%). It required chemical transformation to increase its volatility and thermal stability, and to reduce its viscosity by removing objectionable oxygen, so the product could be used as transportation fuel (gasoline). As a consequence of upgrading bio-oil by catalytic hydrogenation, bio-oil oxygen decreased from 37?2 wt%, carbon increased from 50?83 wt%, hydrogen increased from 9?15 wt% and heating value increased from 36?46 MJ/kg, resulting in a fuel that was comparable to gasoline. The upgraded product passed the thermal stability test when kept under an oxygen-rich environment. The upgraded product consisted of 14.8% parrafins, 21.7% iso-parrafins, 3% napthene, 42.6% aromatics, 4.7% olefin, 4.7% DMF, 8% alcohol, and 0.6% ketone on a mass basis. Comparing the two pathways, biological conversion had 11 wt% ethanol yield from sorghum, and thermal conversion had 13 wt% gasoline yield from switchgrass. For process efficiency, thermal conversion had 35% energy loss versus 45% energy loss for biological conversions. For the biological pathway, ethanol cost was $2.5/gallon ($4/gallon, gasoline equivalent), whereas for the thermal pathway, switchgrass gasoline cost was $3.7/gallon, both with 15% before tax profit.

Imam, Tahmina 1983-

2012-12-01T23:59:59.000Z

188

University of Delaware Institute of Energy Conversion | Open...  

Open Energy Info (EERE)

Energy Conversion Jump to: navigation, search Name University of Delaware Institute of Energy Conversion Place Delaware Product String representation "University rese ... dium tin...

189

North Dakota Energy Conversion and Transmission Facility Siting...  

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

Dakota Energy Conversion and Transmission Facility Siting Act (North Dakota) North Dakota Energy Conversion and Transmission Facility Siting Act (North Dakota) < Back Eligibility...

190

Energy Conversion Devices Inc aka ECD Ovonics | Open Energy Information  

Open Energy Info (EERE)

Conversion Devices Inc aka ECD Ovonics Conversion Devices Inc aka ECD Ovonics Jump to: navigation, search Name Energy Conversion Devices Inc (aka ECD Ovonics) Place Rochester Hills, Michigan Zip 48309 Sector Solar Product Michigan-based materials developer and holding company for thin-film silicon PV manufacturer United Solar Ovonics. References Energy Conversion Devices Inc (aka ECD Ovonics)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Energy Conversion Devices Inc (aka ECD Ovonics) is a company located in Rochester Hills, Michigan . References ↑ "Energy Conversion Devices Inc (aka ECD Ovonics)" Retrieved from "http://en.openei.org/w/index.php?title=Energy_Conversion_Devices_Inc_aka_ECD_Ovonics&oldid=34484

191

BIOMASS ENERGY CONVERSION IN HAWAII  

E-Print Network (OSTI)

Report, (unpublished, 1979). Biomass Project Progress 31.Operations, vol. 2 of Biomass Energy (Stanford: StanfordPhotosynthethic Pathway Biomass Energy Production," ~c:_! _

Ritschard, Ronald L.

2013-01-01T23:59:59.000Z

192

SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion  

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

Next-Generation Thermionic Solar Next-Generation Thermionic Solar Energy Conversion to someone by E-mail Share SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on Facebook Tweet about SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on Twitter Bookmark SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on Google Bookmark SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on Delicious Rank SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on Digg Find More places to share SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload

193

Semiconductor Metrology for Energy Conversion  

Science Conference Proceedings (OSTI)

... lasers, LEDs, photodetectors, and high-efficiency solar cells critical to optical communication, display, data storage, and energy conservation and ...

2012-08-21T23:59:59.000Z

194

Thermal energy storage material  

DOE Patents (OSTI)

A thermal energy storage material which is stable at atmospheric temperature and pressure and has a melting point higher than 32.degree.F. is prepared by dissolving a specific class of clathrate forming compounds, such as tetra n-propyl or tetra n-butyl ammonium fluoride, in water to form a substantially solid clathrate. The resultant thermal energy storage material is capable of absorbing heat from or releasing heat to a given region as it transforms between solid and liquid states in response to temperature changes in the region above and below its melting point.

Leifer, Leslie (Hancock, MI)

1976-01-01T23:59:59.000Z

195

MHK Technologies/Mobil Stabilized Energy Conversion Platform | Open Energy  

Open Energy Info (EERE)

MHK Technologies/Mobil Stabilized Energy Conversion Platform MHK Technologies/Mobil Stabilized Energy Conversion Platform < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Mobil Stabilized Energy Conversion Platform.jpg Technology Profile Primary Organization Aqua Magnetics Inc Technology Resource Click here Wave Technology Type Click here Reciprocating Device Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The Stabilized Energy Conversion Platform SECOP consists of submersible hulls supporting a raised work platform containing a number of AMI s reciprocating electric generators Technology Dimensions Device Testing Date Submitted 34:44.5 << Return to the MHK database homepage Retrieved from

196

Impact of thermal pretreatment on the fast pyrolysis conversion of Southern Pine  

Science Conference Proceedings (OSTI)

Background: Thermal pretreatment of biomass ranges from simple (nondestructive) drying to more severe treatments that cause devolatization, depolymerization and carbonization. These pretreatments have demonstrated promise for transforming raw biomass into feedstock material that has improved milling, handling, storage and conversion properties. In this work, southern pine material was pretreated at 120, 180, 230 and 270 degrees C, and then subjected to pyrolysis tests in a continuous-feed bubbling-fluid bed pyrolysis system. Results: High pretreatment temperatures were associated with lower specific grinding energies, higher grinding rates and lower hydrogen and oxygen contents. Higher pretreatment temperatures were also correlated with increased char production, decreased total acid number and slight decrease in the oxygen content of the pyrolysis liquid fraction. Conclusion: Thermal pretreatment has both beneficial and detrimental impacts on fast pyrolysis conversion of pine material to bio-oil, and the effect of thermal pretreatment on upgrading of pyrolysis bio-oil requires further attention.

Tyler L. Westover; Manunya Phanphanich; Micael L. Clark; Sharna R. Rowe; Steven E. Egan; Christopher T Wright; Richard D. Boardman; Alan H. Zacher

2013-01-01T23:59:59.000Z

197

Electrochemical Energy Storage and Conversion  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Design and Discovery of Novel Energy Materials: Stephan Lany1; 1NREL ... determine and characterise the state of an electrochemical system,...

198

Thermal catalytic conversion of the used isobutyl isoprene rubber into valuable hydrocarbons  

E-Print Network (OSTI)

continuous ?ow reactor for thermal degradation of polymers.Qian J. Studies of the thermal degradation of waste rubber.10.1007/s10973-009-0577-3 Thermal catalytic conversion of

Rasul Jan, M.; Jabeen, Farah; Shah, Jasmin; Mabood, Fazal

2010-01-01T23:59:59.000Z

199

Energy conversion & storage program. 1995 annual report  

DOE Green Energy (OSTI)

The 1995 annual report discusses laboratory activities in the Energy Conversion and Storage (EC&S) Program. The report is divided into three categories: electrochemistry, chemical applications, and material applications. Research performed in each category during 1995 is described. Specific research topics relate to the development of high-performance rechargeable batteries and fuel cells, the development of high-efficiency thermochemical processes for energy conversion, the characterization of new chemical processes and complex chemical species, and the study and application of novel materials related to energy conversion and transmission. Research projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials and deposition technologies, and advanced methods of analysis.

Cairns, E.J.

1996-06-01T23:59:59.000Z

200

Electro-mechanical energy conversion system having a permanent ...  

Electro-mechanical energy conversion system having a permanent magnet machine with stator, resonant transfer link and energy converter controls

Note: This page contains sample records for the topic "thermal energy conversion" 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

US energy conversion and use characteristics  

SciTech Connect

The long-range goal of the Energy Conversion and Utilization Technology (ECUT) Program is to enhance energy productivity in all energy-use sectors by supporting research on improved efficiency and fuel switching capability in the conversion and utilization of energy. Regardless of the deficiencies of current information, a summary of the best available energy-use information is needed now to support current ECUT program planning. This document is the initial draft of this type of summary and serves as a data book that will present current and periodically updated descriptions of the following aspects of energy use: gross US energy consumption in each major energy-use sector; energy consumption by fuel type in each sector; energy efficiency of major equipment/processes; and inventories, replacement rates, and use patterns for major energy-using capital stocks. These data will help the ECUT program staff perform two vital planning functions: determine areas in which research to improve energy productivity might provide significant energy savings or fuel switching and estimate the actual effect that specific research projects may have on energy productivity and conservation. Descriptions of the data sources and examples of the uses of the different types of data are provided in Section 2. The energy-use information is presented in the last four sections; Section 3 contains general, national consumption data; and Sections 4 through 6 contain residential/commercial, industrial, and transportation consumption data, respectively. (MCW)

Imhoff, C.H.; Liberman, A.; Ashton, W.B.

1982-02-01T23:59:59.000Z

202

The Conversion of Waste to Energy  

E-Print Network (OSTI)

Almost every industrial operation produces some combustible waste, but conversion of this to useful energy is often more difficult than with other energy recovery projects and requires careful attention to design, operating and maintaining the facilities. Each application requires a careful approach tailored to the installation, but some general design and economic principles do exist. Several waste to energy projects will be discussed to illustrate these principles.

John, T.; Cheek, L.

1980-01-01T23:59:59.000Z

203

Thermal conversion of oil shale into recoverable hydrocarbons  

SciTech Connect

The production of hydrocarbons is accomplished by pyrolysis of oil shale with controlled removal of the resulting layer of spent oil-shale residue. A procedure is described for the in situ thermal conversion of oil shale wherein fluidized abrasive particles are employed to foster improved hydrocarbon production, in amount and kind, by a controlled partial removal of the layer of spent oil shale which results from application of flowing fluids to heat exposed surfaces of the oil shale to release hydrocarbons. (5 claims)

Slusser, M.L.; Bramhall, W.E.

1969-09-23T23:59:59.000Z

204

SIGNATURES OF PHOTON-AXION CONVERSION IN THE THERMAL SPECTRA AND POLARIZATION OF NEUTRON STARS  

SciTech Connect

Conversion of photons into axions under the presence of a strong magnetic field can dim the radiation from magnetized astrophysical objects. Here we perform a detailed calculation aimed at quantifying the signatures of photon-axion conversion in the spectra, light curves, and polarization of neutron stars (NSs). We take into account the energy and angle dependence of the conversion probability and the surface thermal emission from NSs. The latter is computed from magnetized atmosphere models that include the effect of photon polarization mode conversion due to vacuum polarization. The resulting spectral models, inclusive of the general-relativistic effects of gravitational redshift and light deflection, allow us to make realistic predictions for the effects of photon to axion conversion on observed NS spectra, light curves, and polarization signals. We identify unique signatures of the conversion, such as an increase of the effective area of a hot spot as it rotates away from the observer line of sight. For a star emitting from the entire surface, the conversion produces apparent radii that are either larger or smaller (depending on axion mass and coupling strength) than the limits set by NS equations of state. For an emission region that is observed phase-on, photon-axion conversion results in an inversion of the plane of polarization with respect to the no-conversion case. While the quantitative details of the features that we identify depend on NS properties (magnetic field strength and temperature) and axion parameters, the spectral and polarization signatures induced by photon-axion conversion are distinctive enough to make NSs very interesting and promising probes of axion physics.

Perna, Rosalba [JILA and Department of Astrophysical and Planetary Science, University of Colorado at Boulder, 440 UCB, Boulder, CO 80304 (United States); Ho, Wynn C. G. [School of Mathematics, University of Southampton, Southampton, SO17 1BJ (United Kingdom); Verde, Licia; Jimenez, Raul [ICREA and ICC, University of Barcelona (IEEC-UB) (Spain); Van Adelsberg, Matthew [Center for Relativistic Astrophysics and School of Physics Georgia Institute of Technology, Atlanta, GA 30332 (United States)

2012-04-01T23:59:59.000Z

205

Article for thermal energy storage  

DOE Patents (OSTI)

A thermal energy storage composition is provided which is in the form of a gel. The composition includes a phase change material and silica particles, where the phase change material may comprise a linear alkyl hydrocarbon, water/urea, or water. The thermal energy storage composition has a high thermal conductivity, high thermal energy storage, and may be used in a variety of applications such as in thermal shipping containers and gel packs.

Salyer, Ival O. (Dayton, OH)

2000-06-27T23:59:59.000Z

206

Direct Energy Conversion for Fast Reactors  

DOE Green Energy (OSTI)

Thermoelectric generators (TEG) are a well-established technology for compact low power output long-life applications. Solid state TEGs are the technology of choice for many space missions and have also been used in remote earth-based applications. Since TEGs have no moving parts and can be hermetically sealed, there is the potential for nuclear reactor power systems using TEGs to be safe, reliable and resistant to proliferation. Such power units would be constructed in a manner that would provide decades of maintenance-free operation, thereby minimizing the possibility of compromising the system during routine maintenance operations. It should be possible to construct an efficient direct energy conversion cascade from an appropriate combination of solid-state thermoelectric generators, with each stage in the cascade optimized for a particular range of temperature. Performance of cascaded thermoelectric devices could be further enhanced by exploitation of compositionally graded p-n couples, as well as radial elements to maximize utilization of the heat flux. The Jet Propulsion Laboratory in Pasadena has recently reported segmented unicouples that operate between 300 and 975 K and have conversion efficiencies of 15 percent [Caillat, 2000]. TEGs are used in nuclear-fueled power sources for space exploration, in power sources for the military, and in electrical generators on diesel engines. Second, there is a wide variety of TE materials applicable to a broad range of temperatures. New materials may lead to new TEG designs with improved thermoelectric properties (i.e. ZT approaching 3) and significantly higher efficiencies than in designs using currently available materials. Computational materials science (CMS) has made sufficient progress and there is promise for using these techniques to reduce the time and cost requirements to develop such new TE material combinations. Recent advances in CMS, coupled with increased computational power afforded by the Accelerated Strategic Computing Initiative (ASCI), should improve the speed and decrease the cost of developing new TEGs. The system concept to be evaluated is shown in Figure 1. Liquid metal is used to transport heat away from the nuclear heat source and to the TEG. Air or liquid (water or a liquid metal) is used to transport heat away from the cold side of the TEG. Typical reactor coolants include sodium or eutectic mixtures of lead-bismuth. These are coolants that have been used to cool fast neutron reactors. Heat from the liquid metal coolant is rejected through the thermal electric materials, thereby producing electrical power directly. The temperature gradient could extend from as high as 1300 K to 300 K, although fast reactor structural materials (including those used to clad the fuel) currently used limit the high temperature to about 825K.

Brown, N.; Cooper, J.; Vogt, D.; Chapline, G.; Turchi, P.; Barbee Jr., T.; Farmer, J.

2000-07-01T23:59:59.000Z

207

On the Energy Conversion during Geostrophic Adjustment  

Science Conference Proceedings (OSTI)

It is found that for a continuously stratified fluid which remains so during the geostrophic adjustment, the energy conversion ratio ? (??KE/?PE) is , in contrast to the value of ? for a two-layer fluid. Since the two-layer fluid is an ...

Hsien Wang Ou

1986-12-01T23:59:59.000Z

208

DIRECT ENERGY CONVERSION DEVICES. A Literature Search  

SciTech Connect

A bibliography comprising 208 unclassified references is presented on nuclear direct energy conversion devices. Major emphasis is placed on auxiliary power devices suitable for use in satellites including reports on nuclear batteries, thermoelectric cells, thermionic conversron and aspects of the SNAP program. (J.R.D.)

Raleigh, H.D. comp.

1961-03-01T23:59:59.000Z

209

AQUIFER THERMAL ENERGY STORAGE-A SURVEY  

E-Print Network (OSTI)

High temperature underground thermal energy storage, inProceedings, Thermal Energy Storage in Aquifers Workshop:underground thermal energy storage, in ATES newsletter:

Tsang, Chin Fu

2012-01-01T23:59:59.000Z

210

AQUIFER THERMAL ENERGY STORAGE-A SURVEY  

E-Print Network (OSTI)

1978, High temperature underground thermal energy storage,in Proceedings, Thermal Energy Storage in Aquifers Workshop:High temperature underground thermal energy storage, in ATES

Tsang, Chin Fu

2012-01-01T23:59:59.000Z

211

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network (OSTI)

B. Quale. Seasonal storage of thermal energy in water in theand J. Schwarz, Survey of Thermal Energy Storage in AquifersSecond Annual Thermal Energy Storage Contractors'

Authors, Various

2011-01-01T23:59:59.000Z

212

Wind Energy Conversion Systems (Minnesota) | Department of Energy  

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

Wind Energy Conversion Systems (Minnesota) Wind Energy Conversion Systems (Minnesota) Wind Energy Conversion Systems (Minnesota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Wind Buying & Making Electricity Program Info State Minnesota Program Type Siting and Permitting This section distinguishes between large (capacity 5,000 kW or more) and small (capacity of less than 5,000 kW) wind energy conversion systems (WECS), and regulates the siting of large conversion systems. The statute

213

Aquifer thermal energy (heat and chill) storage  

DOE Green Energy (OSTI)

As part of the 1992 Intersociety Conversion Engineering Conference, held in San Diego, California, August 3--7, 1992, the Seasonal Thermal Energy Storage Program coordinated five sessions dealing specifically with aquifer thermal energy storage technologies (ATES). Researchers from Sweden, The Netherlands, Germany, Switzerland, Denmark, Canada, and the United States presented papers on a variety of ATES related topics. With special permission from the Society of Automotive Engineers, host society for the 1992 IECEC, these papers are being republished here as a standalone summary of ATES technology status. Individual papers are indexed separately.

Jenne, E.A. (ed.)

1992-11-01T23:59:59.000Z

214

SPS energy conversion and power management workshop. Final report  

Science Conference Proceedings (OSTI)

In 1977 a four year study, the concept Development and Evaluation Program, was initiated by the US Department of Energy and the National Aeronautics and Space Administration. As part of this program, a series of peer reviews were carried out within the technical community to allow available information on SPS to be sifted, examined and, if need be, challenged. The SPS Energy Conversion and Power Management Workshop, held in Huntsville, Alabama, February 5 to 7, 1980, was one of these reviews. The results of studies in this particular field were presented to an audience of carefully selected scientists and engineers. This first report summarizes the results of that peer review. It is not intended to be an exhaustive treatment of the subject. Rather, it is designed to look at the SPS energy conversion and power management options in breadth, not depth, to try to foresee any troublesome and/or potentially unresolvable problems and to identify the most promising areas for future research and development. Topics include photovoltaic conversion, solar thermal conversion, and electric power distribution processing and power management. (WHK)

Not Available

1980-06-01T23:59:59.000Z

215

Novel Nuclear Powered Photocatalytic Energy Conversion  

DOE Green Energy (OSTI)

The University of Massachusetts Lowell Radiation Laboratory (UMLRL) is involved in a comprehensive project to investigate a unique radiation sensing and energy conversion technology with applications for in-situ monitoring of spent nuclear fuel (SNF) during cask transport and storage. The technology makes use of the gamma photons emitted from the SNF as an inherent power source for driving a GPS-class transceiver that has the ability to verify the position and contents of the SNF cask. The power conversion process, which converts the gamma photon energy into electrical power, is based on a variation of the successful dye-sensitized solar cell (DSSC) design developed by Konarka Technologies, Inc. (KTI). In particular, the focus of the current research is to make direct use of the high-energy gamma photons emitted from SNF, coupled with a scintillator material to convert some of the incident gamma photons into photons having wavelengths within the visible region of the electromagnetic spectrum. The high-energy gammas from the SNF will generate some power directly via Compton scattering and the photoelectric effect, and the generated visible photons output from the scintillator material can also be converted to electrical power in a manner similar to that of a standard solar cell. Upon successful implementation of an energy conversion device based on this new gammavoltaic principle, this inherent power source could then be utilized within SNF storage casks to drive a tamper-proof, low-power, electronic detection/security monitoring system for the spent fuel. The current project has addressed several aspects associated with this new energy conversion concept, including the development of a base conceptual design for an inherent gamma-induced power conversion unit for SNF monitoring, the characterization of the radiation environment that can be expected within a typical SNF storage system, the initial evaluation of Konarka's base solar cell design, the design and fabrication of a range of new cell materials and geometries at Konarka's manufacturing facilities, and the irradiation testing and evaluation of these new cell designs within the UML Radiation Laboratory. The primary focus of all this work was to establish the proof of concept of the basic gammavoltaic principle using a new class of dye-sensitized photon converter (DSPC) materials based on KTI's original DSSC design. In achieving this goal, this report clearly establishes the viability of the basic gammavoltaic energy conversion concept, yet it also identifies a set of challenges that must be met for practical implementation of this new technology.

White,John R.; Kinsmen,Douglas; Regan,Thomas M.; Bobek,Leo M.

2005-08-29T23:59:59.000Z

216

January 2013 Most Viewed Documents for Energy Storage, Conversion...  

Office of Scientific and Technical Information (OSTI)

January 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Energy Technology Perspectives 2012: Executive Summary Portuguese version NONE Energy...

217

MEMS BASED PYROELECTRIC THERMAL ENERGY HARVESTER - Energy ...  

A pyroelectric thermal energy harvesting apparatus for generating an electric current includes a cantilevered layered pyroelectric capacitor extending ...

218

MHK Technologies/Direct Energy Conversion Method DECM | Open Energy  

Open Energy Info (EERE)

Conversion Method DECM Conversion Method DECM < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Direct Energy Conversion Method DECM.jpg Technology Profile Primary Organization Trident Energy Ltd Project(s) where this technology is utilized *MHK Projects/TE4 Technology Resource Click here Wave Technology Type Click here Point Absorber Technology Description The Direct Energy Conversion Method DECM device has four major components 1 linear generators that convert straight line mechanical motion directly into electricity 2 floats placed in the sea to capture wave energy through a rising and falling action which drives linear generators resulting in the immediate generation of electricity 3 a sea platform used to support the floats and generators and 4 a conventional anchoring system to moor the rig

219

Minutes of the ninth meeting of the Centers for the Analysis of Thermal--Mechanical Energy Conversion Concepts. Report No. CATMEC/23  

DOE Green Energy (OSTI)

The agenda, list of participants, and meeting minutes are presented. The status of ''A Sourcebook on the Production of Electricity from Geothermal Energy'' and the organization of material for it are covered. (MHR)

DiPippo, R.

1978-09-01T23:59:59.000Z

220

Advancing the Frontiers in Nanocatalysis, Biointerfaces, and Renewable Energy Conversion by Innovations of Surface Techniques  

E-Print Network (OSTI)

Biointerfaces, and Renewable Energy Conversion bychemistry) and develop renewable energy based processes.biointerfaces, and renewable energy conversion chemistry. In

Somorjai, G.A.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report. [ODSP-3 code; OTEC Steady-State Analysis Program  

DOE Green Energy (OSTI)

The following appendices are included; Dynamic Simulation Program (ODSP-3); sample results of dynamic simulation; trip report - NH/sub 3/ safety precautions/accident records; trip report - US Coast Guard Headquarters; OTEC power system development, preliminary design test program report; medium turbine generator inspection point program; net energy analysis; bus bar cost of electricity; OTEC technical specifications; and engineer drawings. (WHK)

Not Available

1978-12-04T23:59:59.000Z

222

Ocean thermal energy conversion (OTEC) power system development utilizing advanced, high-performance heat transfer techniques. Volume 1. Conceptual design report  

DOE Green Energy (OSTI)

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC Demonstration Plant. In turn, this Demonstration Plant is to demonstrate, by 1984, the operation and performance of an ocean thermal power plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the Demonstration Plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibility studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report describes the full-size power system module, and summarizes the design parameters and associated costs for the Demonstration Plant module (prototype) and projects costs for commercial plants in production. The material presented is directed primarily toward the surface platform/ship basic reference hull designated for use during conceptual design; however, other containment vessels were considered during the design effort so that the optimum power system would not be unduly influenced or restricted. (WHK)

Not Available

1978-05-12T23:59:59.000Z

223

Development of Detailed Kinetic Models for the Thermal Conversion of Biomass via First  

E-Print Network (OSTI)

Chapter 10 Development of Detailed Kinetic Models for the Thermal Conversion of Biomass via First. In this contribution we discuss four selected example systems related to the thermal conversion of biomass reaction steps, for the biomass gasification process would be of tremendous value to engineers who try

Dean, Anthony M.

224

Novel Energy Conversion Equipment for Low Temperature Geothermal...  

Open Energy Info (EERE)

Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Novel Energy...

225

Advanced Materials for Energy Conversion II TABLE OF CONTENTS  

Science Conference Proceedings (OSTI)

This Table of Contents is from Advanced Materials for Energy Conversion II ... Energy Crisis Fact or Fiction? [pp. .... W.-M. Chien, A. Price and D. Chandra.

226

Pin stack array for thermoacoustic energy conversion  

DOE Patents (OSTI)

A thermoacoustic stack for connecting two heat exchangers in a thermoacoustic energy converter provides a convex fluid-solid interface in a plane perpendicular to an axis for acoustic oscillation of fluid between the two heat exchangers. The convex surfaces increase the ratio of the fluid volume in the effective thermoacoustic volume that is displaced from the convex surface to the fluid volume that is adjacent the surface within which viscous energy losses occur. Increasing the volume ratio results in an increase in the ratio of transferred thermal energy to viscous energy losses, with a concomitant increase in operating efficiency of the thermoacoustic converter. The convex surfaces may be easily provided by a pin array having elements arranged parallel to the direction of acoustic oscillations and with effective radial dimensions much smaller than the thicknesses of the viscous energy loss and thermoacoustic energy transfer volumes.

Keolian, Robert M. (Monterey, CA); Swift, Gregory W. (Santa Fe, NM)

1995-01-01T23:59:59.000Z

227

Soild State Energy Conversion Energy Alliance (SECA)  

DOE Green Energy (OSTI)

In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of 30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

None

2011-12-31T23:59:59.000Z

228

Soild State Energy Conversion Energy Alliance (SECA)  

DOE Green Energy (OSTI)

In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of {>=}30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

None

2011-12-31T23:59:59.000Z

229

Hybrid staging of geothermal energy conversion processes  

SciTech Connect

A hybrid system consists of two or more energy conversion processes. This study examines the use of three energy conversion machines in hybrid systems: the conventional single-phase turbine, and the two-phase expanders known as the Lysholm engine and the radial outflow reaction turbine. Two hybrid systems are presented. The first is a two-stage, single-flash system with the Lysholm engine as the first stage, and a separator and conventional turbine as the second stage. The second system adds a radial outflow reaction turbine to recover a part of the energy rejected in the second stage. A theoretical specific power of 41.3 kW.s/lb is predicted for the two-stage, single-flash hybrid system. The addition of the radial outflow rotary turbine increases performance to 44.8 kW.s/lb. Both are superior to the double-flash system, with a specific power of 37.8 kW.s/lb. In addition, the hybrid system offers operating flexibility.

Steidel, R.F.

1978-09-01T23:59:59.000Z

230

Energy conversion device with improved seal  

DOE Patents (OSTI)

An energy conversion device comprising an improved sealing member adapted to seal a cation-permeable casing to the remainder of the device. The sealing member comprises a metal substrate which (i) bears a nonconductive and corrosion resistant coating on the major surface to which said casing is sealed, and (ii) is corrugated so as to render it flexible, thereby allowing said member to move relative to said casing without cracking the seal therebetween. Corrugations may be circumferential, radial, or both radial and circumferential so as to form dimples. The corrugated member may be in form of a bellows or in a substantially flat form, such as a disc.

Miller, Gerald R. (Salt Lake City, UT); Virkar, Anil V. (Midvale, UT)

1980-01-01T23:59:59.000Z

231

Carbon aerogel electrodes for direct energy conversion  

DOE Patents (OSTI)

A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome.

Mayer, Steven T. (San Leandro, CA); Kaschmitter, James L. (Pleasanton, CA); Pekala, Richard W. (Pleasant Hill, CA)

1997-01-01T23:59:59.000Z

232

Carbon aerogel electrodes for direct energy conversion  

DOE Patents (OSTI)

A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes is described, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome. 1 fig.

Mayer, S.T.; Kaschmitter, J.L.; Pekala, R.W.

1997-02-11T23:59:59.000Z

233

Soild State Energy Conversion Energy Alliance (SECA)  

Science Conference Proceedings (OSTI)

The overall objective is to develop a solid oxide fuel cell (SOFC) stack that can be economically produced in high volumes and mass customized for different applications in transportation, stationary power generation, and military market sectors. In Phase I, work will be conducted on system design and integration, stack development, and development of reformers for natural gas and gasoline. Specifically, Delphi-Battelle will fabricate and test a 5 kW stationary power generation system consisting of a SOFC stack, a steam reformer for natural gas, and balance-of-plant (BOP) components, having an expected efficiency of 35 percent (AC/LHV). In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of 30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

None

2011-12-31T23:59:59.000Z

234

Soild State Energy Conversion Energy Alliance (SECA)  

Science Conference Proceedings (OSTI)

The overall objective is to develop a Solid Oxide Fuel Cell (SOFC) stack that can be economically produced in high volumes and mass customized for different applications in transportation, stationary power generation, and military market sectors. In Phase I, work will be conducted on system design and integration, stack development, and development of reformers for natural gas and gasoline. Specifically, Delphi-Battelle will fabricate and test a 5 kW stationary power generation system consisting of a SOFC stack, a steam reformer for natural gas, and balance-of-plant (BOP) components, having an expected efficiency of {>=}35 percent (AC/LHV). In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of {>=}30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

None

2011-12-31T23:59:59.000Z

235

Thermal energy storage application areas  

DOE Green Energy (OSTI)

The use of thermal energy storage in the areas of building heating and cooling, recovery of industrial process and waste heat, solar power generation, and off-peak energy storage and load management in electric utilities is reviewed. (TFD)

Not Available

1979-03-01T23:59:59.000Z

236

Energy transfer processes in solar energy conversion  

DOE Green Energy (OSTI)

By combining picosecond optical experiments and detailed statistical mechanics theory we continue to increase our understanding of the complex interplay of structure and dynamics in important energy transfer situations. A number of different types of problems will be focused on experimentally and theoretically. They are excitation transport among chromophores attached to finite size polymer coils; excitation transport among chromophores in monolayers, bilayers, and finite and infinite stacks of layers; excitation transport in large vesicle systems; and photoinduced electron transfer in glasses and liquids, focusing particularly on the back transfer of the electron from the photogenerated radical anion to the radical cation. 33 refs., 13 figs.

Fayer, M.D.

1986-11-01T23:59:59.000Z

237

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

disturbances d~e to carbon dioxide releases and sea-surfacefom installations; however, the carbon dioxide~releases fromwith other man-ind~ced carbon dioxide releases to result in

Sands, M.Dale

2013-01-01T23:59:59.000Z

238

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

planes, Large quantities of chlorine will be used to controlthe marine environment. Chlorine react ions in sea\\Chlorine also has been reported to

Sands, M.Dale

2013-01-01T23:59:59.000Z

239

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

and power usages (baseload electricity and production of =approximately 60 GW of baseload electricty could be producedcommunities, and will produce baseload electrical power and

Sands, M.Dale

2013-01-01T23:59:59.000Z

240

On the conversion of rest energy in horizon energy  

E-Print Network (OSTI)

It is shown that the Verlinde formula for the entropy variation of a holographic screen is a consequence of the conversion of the particle energy in horizon energy. The special role played by the particular displacement $\\Delta x = c^{2}/a$ is emphasized, $a$ being the particle acceleration. Using the Heisenberg Principle we show that the energy on the causal horizon (viewed as a holographic screen) of an inertial observer is proportional to its radius, as for a black hole.

Hristu Culetu

2010-05-10T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Energy Conversion Facilities Sales Tax Exemption (Ohio) | Open...  

Open Energy Info (EERE)

Thermal Process Heat, Solar Water Heat, Wind Active Incentive Yes Implementing Sector StateTerritory Energy Category Energy Efficiency Incentive Programs, Renewable Energy...

242

Compact harsh environment energy conversion systems  

E-Print Network (OSTI)

The quest for energy is leading the industry into drilling deeper wells. Typically, a temperature gradient of 1C/150 ft can be expected, with bottom hole temperatures reaching beyond 200C in many areas of the world. Moreover, the increased recovery benefits and cost reductions possible with the use of horizontal and multilateral wells has triggered a need for higher power energy conversion systems in bottom hole assemblies, such as rotary steerable tools and downhole tractors. The concepts developed throughout this work address some of these new needs. This research investigated improvements, novel solutions and considerations that will lead to significant advantages in terms of reliability, extended temperature operation, increased power capability and reduced size and cost of compact harsh environment energy conversion systems. Improvements to both the electromechanical subsystem and the power electronic subsystem are introduced. Air gap viscous losses were shown to a have a significant effect on the optimal design of submersible PM (permanent magnet) machines, and a design procedure to account for this loss component in the design was developed. The application of a dual winding exterior rotor PM machine in a downhole environment enabled a significant increase in the applications torque capability, provided protection against generator winding over voltage, and reduced parts count. Comprehensive switching device qualification, testing, and simulation lead to a simple failure mitigation technique for the operation of the most suitable devices at elevated temperature. A flying capacitor multilevel inverter was then successfully constructed and temperature tested. A novel motor drive concept suited for elevated temperature oil filled environment applications concluded the research.

Ahmed, Shehab

2007-05-01T23:59:59.000Z

243

Energy Conversion and Transmission Facilities (South Dakota) | Department  

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

Energy Conversion and Transmission Facilities (South Dakota) Energy Conversion and Transmission Facilities (South Dakota) Energy Conversion and Transmission Facilities (South Dakota) < Back Eligibility Utility Commercial Investor-Owned Utility Industrial Construction Municipal/Public Utility Installer/Contractor Rural Electric Cooperative Retail Supplier Institutional Systems Integrator Fuel Distributor Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State South Dakota Program Type Siting and Permitting Provider South Dakota Public Utilities Commission This legislation applies to energy conversion facilities designed for or capable of generating 100 MW or more of electricity, wind energy facilities with a combined capacity of 100 MW, certain transmission facilities, and

244

A Review of Previous Research in Direct Energy Conversion Fission Reactors  

DOE Green Energy (OSTI)

From the earliest days of power reactor development, direct energy conversion was an obvious choice to produce high efficiency electric power generation. Directly capturing the energy of the fission fragments produced during nuclear fission avoids the intermediate conversion to thermal energy and the efficiency limitations of classical thermodynamics. Efficiencies of more than 80% are possible, independent of operational temperature. Direct energy conversion fission reactors would possess a number of unique characteristics that would make them very attractive for commercial power generation. These reactors would be modular in design with integral power conversion and operate at low pressures and temperatures. They would operate at high efficiency and produce power well suited for long distance transmission. They would feature large safety margins and passively safe design. Ideally suited to production by advanced manufacturing techniques, direct energy conversion fission reactors could be produced more economically than conventional reactor designs. The history of direct energy conversion can be considered as dating back to 1913 when Moseleyl demonstrated that charged particle emission could be used to buildup a voltage. Soon after the successful operation of a nuclear reactor, E.P. Wigner suggested the use of fission fragments for direct energy conversion. Over a decade after Wigner's suggestion, the first theoretical treatment of the conversion of fission fragment kinetic energy into electrical potential appeared in the literature. Over the ten years that followed, a number of researchers investigated various aspects of fission fragment direct energy conversion. Experiments were performed that validated the basic physics of the concept, but a variety of technical challenges limited the efficiencies that were achieved. Most research in direct energy conversion ceased in the US by the late 1960s. Sporadic interest in the concept appears in the literature until this day, but there have been no recent significant programs to develop the technology.

DUONG,HENRY; POLANSKY,GARY F.; SANDERS,THOMAS L.; SIEGEL,MALCOLM D.

1999-09-22T23:59:59.000Z

245

Biofuel Conversion Basics | Department of Energy  

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

Biofuel Conversion Basics Biofuel Conversion Basics Biofuel Conversion Basics August 14, 2013 - 12:31pm Addthis The conversion of biomass solids into liquid or gaseous biofuels is a complex process. Today, the most common conversion processes are biochemical- and thermochemical-based. However, researchers are also exploring photobiological conversion processes. Biochemical Conversion Processes In biochemical conversion processes, enzymes and microorganisms are used as biocatalysts to convert biomass or biomass-derived compounds into desirable products. Cellulase and hemicellulase enzymes break down the carbohydrate fractions of biomass to five- and six-carbon sugars in a process known as hydrolysis. Yeast and bacteria then ferment the sugars into products such as ethanol. Biotechnology advances are expected to lead to dramatic

246

Thermionic energy conversion (TEC) topping thermoelectrics  

DOE Green Energy (OSTI)

Long-respected international experts on thermoelectrics (Dixon, Ertl and Goldsmid supported by Ure) determine the probable maximum figure of merit (ZT) for fully matured thermoelectric generators as about unity from ordiary temperatures to 2000 K. Thus the maximum efficiency for fully matured thermoelectrics would be approximately 0.414 (l - r/sub T/)/(1.414 + r/sub T/) where r/sub T/ is the ratio of cold and hot junction temperatures. This limitation contrasts with the recent burst of enthusiasm for high-temperature thermoelectrics - based on calculated figures of merit and efficiencies that increase more and more rapidly with rising temperatures. Unfortunately these calculations neglect internal radiation effects which diminish thermoelectric figures of merit significantly at 1000 K and substantially at 2000 K: The effective thermal-conductivity contribution of intrathermoelectric radiative dissipation increases with the third power of temperature. Therefore the quotation from Thermoelectricy: Science and Engineering by Heikes and Ure apparently still prevails: ...thermoelectric devices appear difficult to extend in the direction of high temperature, while thermionic devices become inefficient at low temperature. Accordingly consideration of thermoelectric power generation with high-temperature heat sources should include utilization of TEC topping thermoelectrics. However TEC alone or TEC topping more-efficient conversion systems like steam or gas turbines, combined cycles or Stirling engines would be more desirable generally.

Morris, J.F.

1981-01-01T23:59:59.000Z

247

Modeling and analysis of energy conversion systems  

DOE Green Energy (OSTI)

An investigation was conducted to assess the need for and the feasibility of developing a computer code that could model thermodynamic systems and predict the performance of energy conversion systems. To assess the market need for this code, representatives of a few industrial organizations were contacted, including manufacturers, system and component designers, and research personnel. Researchers and small manufacturers, designers, and installers were very interested in the possibility of using the proposed code. However, large companies were satisfied with the existing codes that they have developed for their own use. Also, a survey was conduced of available codes that could be used or possibly modified for the desired purpose. The codes were evaluated with respect to a list of desirable features, which was prepared as a result of the survey. A few publicly available codes were found that might be suitable. The development, verification, and maintenance of such a code would require a substantial, ongoing effort. 21 refs.

Den Braven, K.R. (Idaho Univ., Moscow, ID (USA). Dept. of Mechanical Engineering); Stanger, S. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

1990-10-01T23:59:59.000Z

248

Power conversion from environmentally scavenged energy sources.  

DOE Green Energy (OSTI)

As the power requirements for modern electronics continue to decrease, many devices which were once dependent on wired power are now being implemented as portable devices operating from self-contained power sources. The most prominent source of portable power is the electrochemical battery, which converts chemical energy into electricity. However, long lasting batteries require large amounts of space for chemical storage, and inevitably require replacement when the chemical reaction no longer takes place. There are many transducers and scavenging energy sources (SES) that are able to exploit their environment to generate low levels of electrical power over a long-term time period, including photovoltaic cells, thermoelectric generators, thermionic generators, and kinetic/piezoelectric power generators. This generated power is sustainable as long as specific environmental conditions exist and also does not require the large volume of a long lifetime battery. In addition to the required voltage generation, stable power conversion requires excess energy to be efficiently stored in an ultracapacitor or similar device and monitoring control algorithms to be implemented, while computer modeling and simulation can be used to complement experimental testing. However, building an efficient and stable power source scavenged from a varying input source is challenging.

Druxman, Lee Daniel

2007-09-01T23:59:59.000Z

249

NETL: Third Annual Solid State Energy Conversion Alliance (SECA...  

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

2 Conference Proceedings Third Annual Solid State Energy Conversion Alliance (SECA) Workshop March 21-22, 2002 Table of Contents Disclaimer Papers and Presentations Disclaimer This...

250

Liquid Metal MHD Energy Conversion in Fusion Reactors  

Science Conference Proceedings (OSTI)

Innovative Concepts for Power Conversion / Proceedings of the Seveth Topical Meeting on the Technology of Fusion Energy (Reno, Nevada, June 1519, 1986)

L. Blumenau; H. Branover; A. El-Boher; E Spero; S. Sukoriansky; G. Talmage; E. Greenspan

251

In-Situ MHD Energy Conversion for Fusion  

Science Conference Proceedings (OSTI)

Innovative Concepts for Power Conversion / Proceedings of the Seveth Topical Meeting on the Technology of Fusion Energy (Reno, Nevada, June 1519, 1986)

R. B. Campbell; M. A. Hoffman; B. G. Logan

252

A Study of Conversion Reactions Using Electron Energy Loss  

Science Conference Proceedings (OSTI)

In this study, conversion mechanism in NiO was studied using high resolution transmission electron microscopy and electron energy loss spectroscopy (EELS).

253

Method for conversion of beta-hydroxy carbonyl compounds - Energy ...  

Conversion products find use, e.g., ... United States Patent ... as operator of Pacific Northwest National Laboratory under U.S. Department of Energy Contract DE ...

254

September 2013 Most Viewed Documents for Energy Storage, Conversion...  

Office of Scientific and Technical Information (OSTI)

September 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III...

255

Chromium Alloys for More Efficient Fossil Energy Conversion ...  

Science Conference Proceedings (OSTI)

Abstract Scope, In order to improve efficiency and reduce environmental emissions in fossil energy conversion systems, new technologies such as oxy- fuel gas...

256

Most Viewed Documents - Energy Storage, Conversion, and Utilization...  

Office of Scientific and Technical Information (OSTI)

Most Viewed Documents - Energy Storage, Conversion, and Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002)...

257

Efficient thermal energy distribution in commercial buildings...  

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

Efficient thermal energy distribution in commercial buildings -- Final Report Title Efficient thermal energy distribution in commercial buildings -- Final Report Publication Type...

258

Photovoltaic Cell Conversion Efficiency Basics | Department of Energy  

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

Conversion Efficiency Basics Conversion Efficiency Basics Photovoltaic Cell Conversion Efficiency Basics August 20, 2013 - 2:58pm Addthis The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity. Improving this conversion efficiency is a key goal of research and helps make PV technologies cost-competitive with more traditional sources of energy. Factors Affecting Conversion Efficiency Much of the energy from sunlight reaching a PV cell is lost before it can be converted into electricity. But certain characteristics of solar cell materials also limit a cell's efficiency to convert the sunlight it receives. Wavelength of Light Light is composed of photons-or packets of energy-that range in

259

Lih thermal energy storage device  

DOE Patents (OSTI)

A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures.

Olszewski, Mitchell (Knoxville, TN); Morris, David G. (Knoxville, TN)

1994-01-01T23:59:59.000Z

260

Standards for photovoltaic energy conversion systems. Final report  

DOE Green Energy (OSTI)

This report provides the results of a search for existing domestic standards and related documents for possible application in the development of a standards base for photovoltaic energy conversion systems. The search resulted in locating about 150 test methods, recommended practices, standards, solar-thermal performance criteria, and other standards-related documents. They are listed by topic areas in the appendix. The listing was prepared to assist those involved in developing performance criteria for photovoltaic systems and in identifying methods to test system performance against these criteria. It is clear from the results of the search that few standards are directly applicable to terrestrial solar photovoltaic systems and that much standards development is required to support the commercialization of such systems.

Schafft, H. A.

1980-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Method and apparatus for thermal energy storage. [Patent application  

DOE Patents (OSTI)

A method and apparatus for storing energy by converting thermal energy to potential chemically bound energy in which a first metal hydride is heated to dissociation temperature, liberating hydrogen gas which is compressed and reacted with a second metal to form a second metal hydride while releasing thermal energy. Cooling the first metal while warming the second metal hydride to dissociation temperature will reverse the flow of hydrogen gas back to the first metal, releasing additional thermal energy. The method and apparatus are particularly useful for the storage and conversion of thermal energy from solar heat sources and for the utilization of this energy for space heating purposes, such as for homes or offices.

Gruen, D.M.

1975-08-19T23:59:59.000Z

262

Share of Conversion Capacity - Energy Information Administration  

U.S. Energy Information Administration (EIA)

In the early to mid 1980s, Atlantic Basin refiners rapidly expanded their conversion capacity as a consequence of the belief that world crude production would get ...

263

Definition: Thermal energy | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Thermal energy Jump to: navigation, search Dictionary.png Thermal energy The kinetic energy associated with the random motions of the molecules of a material or object; often used interchangeably with the terms heat and heat energy. Measured in joules, calories, or Btu.[1][2][3] View on Wikipedia Wikipedia Definition Thermal energy is the part of the total potential energy and kinetic energy of an object or sample of matter that results in the system temperature. It is represented by the variable Q, and can be measured in Joules. This quantity may be difficult to determine or even meaningless unless the system has attained its temperature only through warming (heating), and not been subjected to work input or output, or any other

264

E2I EPRI Assessment Offshore Wave Energy Conversion Devices  

E-Print Network (OSTI)

of offshore wave power to provide efficient, reliable, cost-effective, and environmentally friendly electrical definition study in CY 2004. This study will produce system designs for wave energy conversion device power plants, performance estimate and economic assessments for one site ­ wave energy conversion device per

265

Converse County, Wyoming: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Converse County, Wyoming: Energy Resources Converse County, Wyoming: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.0489425°, -105.4068079° 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":43.0489425,"lon":-105.4068079,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

266

Theoretical investigation of solar energy conversion and water oxidation catalysis  

E-Print Network (OSTI)

Solar energy conversion and water oxidation catalysis are two great scientific and engineering challenges that will play pivotal roles in a future sustainable energy economy. In this work, I apply electronic structure ...

Wang, Lee-Ping

2011-01-01T23:59:59.000Z

267

Solid State Energy Conversion Alliance (SECA) Workshop  

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

NETL Publications NETL Publications 2001 Conference Proceedings Solid State Energy Conversion Alliance (SECA) Workshop March 29-30, 2001 Table of Contents Disclaimer Papers and Presentations Plenary Session Selected Presentations on Current DOE Work Supporting SECA Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

268

Introduction to electric energy conversion systems for geothermal energy resources  

SciTech Connect

The types of geothermal energy conversion systems in use are classified as follows: direct, dry steam; separated steam; single-flash steam; double-flash steam; multi-flash steam; brine/Freon binary cycle; and brine/isobutane binary cycle. The thermodynamics of each of these is discussed with reference to simplified flow diagrams. Typical existing power plants are identified for each type of system. (MHR)

DiPippo, R.

1978-06-01T23:59:59.000Z

269

Matrix-assisted energy conversion in nanostructured ...  

A nanoconverter is capable of directly generating electricity through a nanostructure embedded in a polymer layer experiencing differential thermal ...

270

Atlantic Biomass Conversions Inc | Open Energy Information  

Open Energy Info (EERE)

Conversions Inc Conversions Inc Jump to: navigation, search Name Atlantic Biomass Conversions Inc Place Frederick, Maryland Sector Biomass Product Atlantic Biomass Conversions is working on a system and a genetically modified bacteria to convert sugar beet pulp waste into methanol. Coordinates 45.836395°, -98.507249° 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":45.836395,"lon":-98.507249,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

271

Energy Conversion Materials Through Chemical Synthesis Route  

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

Conversion Materials Through Chemical Synthesis Route Speaker(s): Lionel Vayssieres Date: April 27, 2004 - 12:00pm Location: Bldg. 90 Seminar HostPoint of Contact: Samuel Mao The...

272

MHK Technologies/Wave Energy Conversion Activator WECA | Open Energy  

Open Energy Info (EERE)

Activator WECA Activator WECA < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Energy Conversion Activator WECA.jpg Technology Profile Primary Organization Daedalus Informatics Ltd Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description The full scale WECA design is ideally fabricated with steel so as to be suitable for mounting on the run up wall of breakwaters or other rigid or floating structures The oscillating wave surge converter absorbs most of the energy of the impacting waves and turn it into compressed air which is subsequently converted into electric power or other forms of energy The device utilizes the Critical Momentum Wedge principle where the water rushing into the device resembles a virtual Wedge of kinetic energy

273

Environmental Energy Technologies Division Thermal Field Tests  

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

Thermal Field Tests Joseph H. Klems, LBNL DOE PEER Review San Francisco, CA April 20, 1999 Environmental Energy Technologies Division Current Work l Skylight Thermal Performance *...

274

Stewart Thermal Ltd | Open Energy Information  

Open Energy Info (EERE)

Stewart Thermal Ltd Jump to: navigation, search Name Stewart Thermal Ltd Place United Kingdom Sector Biomass Product Provides specialist advice in the field of biomass energy....

275

Thermal hydraulic design and analysis of a large lead-cooled reactor with flexible conversion ratio  

E-Print Network (OSTI)

This thesis contributes to the Flexible Conversion Ratio Fast Reactor Systems Evaluation Project, a part of the Nuclear Cycle Technology and Policy Program funded by the Department of Energy through the Nuclear Energy ...

Nikiforova, Anna S., S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

276

Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system  

DOE Patents (OSTI)

This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

Dziendziel, Randolph J. (Middle Grove, NY); Baldasaro, Paul F. (Clifton Park, NY); DePoy, David M. (Clifton Park, NY)

2010-09-07T23:59:59.000Z

277

Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system  

DOE Patents (OSTI)

This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

Dziendziel, Randolph J. (Middle Grove, NY); DePoy, David Moore (Clifton Park, NY); Baldasaro, Paul Francis (Clifton Park, NY)

2007-01-23T23:59:59.000Z

278

North Dakota Energy Conversion and Transmission Facility Siting Act (North  

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

Dakota Energy Conversion and Transmission Facility Siting Act Dakota Energy Conversion and Transmission Facility Siting Act (North Dakota) North Dakota Energy Conversion and Transmission Facility Siting Act (North Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Dakota Program Type Line Extension Analysis

279

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network (OSTI)

Survey of Thermal Energy Storage in Aquifers Coupled withGeneration and Energy Storage," presented at Frontiers ofStudy of Underground Energy Storage Using High-Pressure,

Authors, Various

2011-01-01T23:59:59.000Z

280

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network (OSTI)

and J. Schwarz, Survey of Thermal Energy Storage in AquifersA. 1957. Steady State Free Thermal Convection of Liquid in a1958. An Experiment on Free Thermal Convection of Water in

Authors, Various

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Thermal Energy Storage  

Science Conference Proceedings (OSTI)

The Ice Bear30 Hybrid Air Conditionerthermal energy storage system150uses smart integrated controls, ice storage, and a dedicated compressor for cooling. The system is designed to provide cooling to interior spaces by circulating refrigerant within an additional evaporator coil added to a standard unitary air conditioner. The Ice Bear 30 is a relatively small size (5 ton), intended for use in residential and light commercial applications. This report describes EPRI tests of the Ice Bear 30, which is manu...

2009-12-14T23:59:59.000Z

282

Ris Energy Report 2 Bioenergy conversion  

E-Print Network (OSTI)

Electricity production by SOFC fuel cells is one road to obtain a high efficiency in electricity production. In order to meet this demand in a sustainable way, gasifica- tion and SOFC fuel cell conversion systems gasfication gas has the potential to be used directly in SOFC cells or alternatively steam- reformed

283

Energy Basics: Photovoltaic Cell Conversion Efficiency  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Cells Systems Concentrating Solar...

284

STATEMENT OF CONSIDERATIONS REQUEST BY ENERGY CONVERSION DEVICES...  

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

CH 630 252 2779 TO AGCP-HQ P.0204 * * STATEMENT OF CONSIDERATIONS REQUEST BY ENERGY CONVERSION DEVICES, INC. FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER...

285

Organic Membranes for Energy Conversion and "Green" Manufacturing  

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

Organic Membranes for Energy Conversion and "Green" Manufacturing Speaker(s): John Kerr Date: January 17, 2002 - 12:00pm Location: Bldg. 90 Seminar HostPoint of Contact: Cynthia...

286

Neutral beam based on positive ions with direct energy conversion  

DOE Green Energy (OSTI)

Positive ions can make efficient neutral beams when direct energy conversion is incorporated at energies up to 150 keV for D/sup 0/, 225 keV for T/sup 0/ and 300 keV for /sup 3/He/sup 0/. Above these energies the efficiency is low (<50%) and falling rapidly, requiring other means for making neutral beams such as negative ions. The virtues of /sup 3/He/sup 0/ beams as a heater are discussed. The role of direct conversion is discussed and the various conversion concepts and the experimental data base are reviewed. The development problems facing direct conversion are: space charge handling, secondary and primary electron suppression, and the fractional energy ions. The next step in the development of efficient neutral beams based on positive ions is argued to be a developmental beam which integrates an advanced ion source with a neutralizer, cryopump, direct converter, heat removal system, and power conditioning system.

Moir, R.W.; Barr, W.L.; Blum, A.S.; Hamilton, G.W.

1977-12-01T23:59:59.000Z

287

A New Earth-Abundant Semiconductor for Solar Energy Conversion  

Science Conference Proceedings (OSTI)

Presentation Title, G2, ZnSnN2: A New Earth-Abundant Semiconductor for Solar Energy Conversion. Author(s), Lise Lahourcade, Naomi C Coronel, Harry A...

288

WIND ENERGY POWER CONVERSION SYSTEM REDUCING GEARBOX STRESS ...  

A wind energy power conversion system includes a gearbox, a generator, an AC to DC power converter, a DC link, and a DC to AC power converter, and at least one ...

289

February 2013 Most Viewed Documents for Energy Storage, Conversion...  

Office of Scientific and Technical Information (OSTI)

Urban HeatIslandMitigation Akbari, Hashem (2005) 138 Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Final Report Michael Schuller; Frank...

290

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

291

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

PHASE CHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLARChange Materials for Thermal Energy Storage in ConcentratedChange Materials for Thermal Energy Storage in Concentrated

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

292

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

PHASE CHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLARMaterials for Thermal Energy Storage in Concentrated SolarMaterials for Thermal Energy Storage in Concentrated Solar

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

293

Energy conversion device with support member having pore channels  

DOE Patents (OSTI)

Energy devices such as energy conversion devices and energy storage devices and methods for the manufacture of such devices. The devices include a support member having an array of pore channels having a small average pore channel diameter and having a pore channel length. Material layers that may include energy conversion materials and conductive materials are coaxially disposed within the pore channels to form material rods having a relatively small cross-section and a relatively long length. By varying the structure of the materials in the pore channels, various energy devices can be fabricated, such as photovoltaic (PV) devices, radiation detectors, capacitors, batteries and the like.

Routkevitch, Dmitri [Longmont, CO; Wind, Rikard A [Johnstown, CO

2014-01-07T23:59:59.000Z

294

Thermal conversion of municipal solid waste via hydrothermal carbonization: Comparison of carbonization products to products from current waste management techniques  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Hydrothermal carbonization (HTC) is a novel thermal conversion process. Black-Right-Pointing-Pointer HTC converts wastes into value-added resources. Black-Right-Pointing-Pointer Carbonization integrates majority of carbon into solid-phase. Black-Right-Pointing-Pointer Carbonization results in a hydrochar with high energy density. Black-Right-Pointing-Pointer Using hydrochar as an energy source may be beneficial. - Abstract: Hydrothermal carbonization (HTC) is a novel thermal conversion process that may be a viable means for managing solid waste streams while minimizing greenhouse gas production and producing residual material with intrinsic value. HTC is a wet, relatively low temperature (180-350 Degree-Sign C) thermal conversion process that has been shown to convert biomass to a carbonaceous residue referred to as hydrochar. Results from batch experiments indicate HTC of representative waste materials is feasible, and results in the majority of carbon (45-75% of the initially present carbon) remaining within the hydrochar. Gas production during the batch experiments suggests that longer reaction periods may be desirable to maximize the production of energy-favorable products. If using the hydrochar for applications in which the carbon will remain stored, results suggest that the gaseous products from HTC result in fewer g CO{sub 2}-equivalent emissions than the gases associated with landfilling, composting, and incineration. When considering the use of hydrochar as a solid fuel, more energy can be derived from the hydrochar than from the gases resulting from waste degradation during landfilling and anaerobic digestion, and from incineration of food waste. Carbon emissions resulting from the use of the hydrochar as a fuel source are smaller than those associated with incineration, suggesting HTC may serve as an environmentally beneficial alternative to incineration. The type and extent of environmental benefits derived from HTC will be dependent on hydrochar use/the purpose for HTC (e.g., energy generation or carbon storage).

Lu Xiaowei; Jordan, Beth [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States); Berge, Nicole D., E-mail: berge@cec.sc.edu [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States)

2012-07-15T23:59:59.000Z

295

Energy Conversion Materials Through Chemical Synthesis Route  

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

Conversion Materials Through Chemical Synthesis Route Conversion Materials Through Chemical Synthesis Route Speaker(s): Lionel Vayssieres Date: April 27, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Samuel Mao The ability to design anisotropic nanoparticles with tailored aspect ratio and to order them into large 3-D arrays is an important challenge that scientists have to face to create functionalized nanomaterials. Our approach to control the size and shape of nanoparticles as well as the overall texture of nanoparticulate thin films is to tune their direct aqueous hydrolysis-condensation growth onto substrates by monitoring the interfacial thermodynamics of nanocrystals as well as their kinetics of heteronucleation. Growing materials at very low interfacial tension, i.e. at thermodynamically stable conditions, allows the experimental control of

296

Energy Basics: Tidal Energy  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

297

Energy Basics: Wave Energy  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

298

Energy Conversion Facilities Property Tax Exemption (Ohio) |...  

Open Energy Info (EERE)

Biomass, Municipal Solid Waste, CHPCogeneration Active Incentive No Implementing Sector StateTerritory Energy Category Renewable Energy Incentive Programs Amount 100% exemption...

299

Energy Conversion Facilities Corporate Tax Exemption (Ohio) ...  

Open Energy Info (EERE)

Biomass, Municipal Solid Waste, CHPCogeneration Active Incentive No Implementing Sector StateTerritory Energy Category Renewable Energy Incentive Programs Amount 100% Exemption...

300

Multi-objective design and optimization of district energy systems including polygeneration energy conversion technologies.  

E-Print Network (OSTI)

??In the present context of finding ways to decrease CO2 emissions linked with human activity, district energy systems including polygeneration energy conversion technologies are likely (more)

Weber, Cline Isabelle

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

Building Thermal Energy _Storage in ASEAN Countries,"Company, "Thermal Energy Storage for Cooling," Seminar25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF COMMERCIAL

Akbari, H.

2010-01-01T23:59:59.000Z

302

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

of Commercial Building Thermal Energy _Storage in ASEANGas Electric Company, "Thermal Energy Storage for Cooling,"LBL--25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF

Akbari, H.

2010-01-01T23:59:59.000Z

303

A Magnetomechanical Thermal Energy Harvester With A Reversible Liquid Interface  

E-Print Network (OSTI)

and Mechanical Model of a Thermal Energy Harvesting Device,M, and Ferrari V. , Thermal energy harvesting throughand G. P. Carman, Thermal energy harvesting device using

He, Hong

2012-01-01T23:59:59.000Z

304

Thermal Scout Software - Energy Innovation Portal  

Energy Analysis Thermal ... Technology Marketing Summary. ... The software uses GPS data to automate infrared camera image capture and temperature ana ...

305

Energy Conversion and Storage Program: 1992 Annual report  

Science Conference Proceedings (OSTI)

This report is the 1992 annual progress report for the Energy Conversion and Storage Program, a part of the Energy and Environment Division of the Lawrence Berkeley Laboratory. Work described falls into three broad areas: electrochemistry; chemical applications; and materials applications. The Energy Conversion and Storage Program applies principles of chemistry and materials science to solve problems in several areas: (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes and chemical species, and (5) study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Chemical applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing product and waste streams from synfuel plants, coal gasifiers, and biomass conversion processes. Materials applications research includes evaluation of the properties of advanced materials, as well as development of novel preparation techniques. For example, techniques such as sputtering, laser ablation, and poised laser deposition are being used to produce high-temperature superconducting films.

Cairns, E.J.

1993-06-01T23:59:59.000Z

306

Microwavable thermal energy storage material  

DOE Patents (OSTI)

A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene-vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments.

Salyer, Ival O. (Dayton, OH)

1998-09-08T23:59:59.000Z

307

Microwavable thermal energy storage material  

DOE Patents (OSTI)

A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments. 3 figs.

Salyer, I.O.

1998-09-08T23:59:59.000Z

308

Thermal Transport in Nanomaterials for Energy Applications  

Science Conference Proceedings (OSTI)

Symposium, Energy Nanomaterials. Presentation Title, Thermal Transport in Nanomaterials for Energy Applications. Author(s), Xinwei Wang. On-Site Speaker ...

309

Energy Basics: Photovoltaic Cell Conversion Efficiency  

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

efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

310

Novel Energy Conversion Equipment for Low Temperature Geothermal Resources  

Open Energy Info (EERE)

Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and Geopressured Resources Project Type / Topic 3 Low Temperature Resources Project Description Using mass-produced chiller equipment for "reverse refrigeration" to generate electricity: This approach allows Johnson Controls to take advantage of the economies of scale and manufacturing experience gained from current products while minimizing performance risks. Process efficiencies will be increased over the current state of the art in two ways: better working fluids and improved cycle heat management.

311

Biomimetic approach to solar energy conversion: artificial photosynthesis  

DOE Green Energy (OSTI)

Results of efforts to devise apparatus and systems for using solar energy for chemical purposes by methods that mimic those used by photosynthetic organisms are reported. Sufficient progress has been made in the understanding of plant photosynthesis to make artificial photosynthesis a reasonable goal. Artificial photoreaction centers, the apparatus used by photosynthetic organisms for light energy conversion to chemical oxidizing and reducing capacity, have been made in the laboratory. The synthetic reaction centers mimic with remarkable fidelity the properties of their in vivo prototypes. Some of the formidable problems that must still be solved and the future prospects for biomimetic devices for solar energy conversion are discussed.

Katz, J.J.

1978-01-01T23:59:59.000Z

312

Standard Terminology Relating to Photovoltaic Solar Energy Conversion  

E-Print Network (OSTI)

1.1 This terminology pertains to photovoltaic (radiant-to-electrical energy conversion) device performance measurements and is not a comprehensive list of terminology for photovoltaics in general. 1.2 Additional terms used in this terminology and of interest to solar energy may be found in Terminology E 772.

American Society for Testing and Materials. Philadelphia

2005-01-01T23:59:59.000Z

313

Optimization of Oxygen Purity for Coal Conversion Energy Reduction  

E-Print Network (OSTI)

The conversion of coal into gaseous and liquid fuels and chemical feedstock will require large quantities of oxygen. This oxygen will be produced in large multi-train air separation plants which will consume about 350 kilowatt hours of energy for each ton of coal processed. Thus, the oxygen plants in a commercial coal conversion facility may require 150 megawatts. Design of the oxygen plants will require close attention to energy consumption. Many coal conversion processes can accept oxygen at less than the historical 99.5% purity with significant savings in energy and cost. The air separation process is reviewed with emphasis on optimum oxygen purity. An energy reduction of 8.4% can be achieved when oxygen purity is reduced from 99.5% to 95%. Oxygen is a major tonnage chemical which is also highly energy intensive. The current United States capacity of about 80 thousand tons per day places it in the top five of basic chemicals, and its energy requirement of 350 to 450 kilowatt hours per ton makes it a major energy consumer. The growing synfuels industry -- conversion of coal into hydrocarbon fuels and chemical feed-stocks -- will greatly increase the production of oxygen and presents major opportunities for energy conservation.

Baker, C. R.; Pike, R. A.

1982-01-01T23:59:59.000Z

314

An Assessment of Solar Energy Conversion Technologies and Research Opportunities  

E-Print Network (OSTI)

(25%). The energy quality of diffused radiation is lower (75.2% of exergy content instead of 93 for the production of electricity and hot water. Similar estimates are shown for wind energy (0.06TW), ocean thermal of Solar Energy Deployment The global solar energy potential ranges from 2.5 to 80TW (see Appendix

Nur, Amos

315

Energy Conversion Devices Fuel Cell Electrocatalyst Development...  

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

Fuel Cell(tm) Texaco Ovonic Fuel Cell Company, LLC non-precious metal catalysts regenerative braking energy absorption capability wide temperature range instant...

316

Biomass energy conversion workshop for industrial executives  

DOE Green Energy (OSTI)

The rising costs of energy and the risks of uncertain energy supplies are increasingly familiar problems in industry. Bottom line profits and even the simple ability to operate can be affected by spiralling energy costs. An often overlooked alternative is the potential to turn industrial waste or residue into an energy source. On April 9 and 10, 1979, in Claremont, California, the Solar Energy Research Institute (SERI), the California Energy Commission (CEC), and the Western Solar Utilization Network (WSUN) held a workshop which provided industrial managers with current information on using residues and wastes as industrial energy sources. Successful industrial experiences were described by managers from the food processing and forest product industries, and direct combustion and low-Btu gasification equipment was described in detail. These speakers' presentations are contained in this document. Some major conclusions of the conference were: numerous current industrial applications of wastes and residues as fuels are economic and reliable; off-the-shelf technologies exist for converting biomass wastes and residues to energy; a variety of financial (tax credits) and institutional (PUC rate structures) incentives can help make these waste-to-energy projects more attractive to industry. However, many of these incentives are still being developed and their precise impact must be evaluated on a case-by-case basis.

None

1979-01-01T23:59:59.000Z

317

Energy Conversion, Storage, and Transport Programs and ...  

Science Conference Proceedings (OSTI)

... The Society of Automotive Engineers International (SAE) has proposed a ... hydrogen storage material satisfies the Department of Energy (DoE) goal ...

2010-05-24T23:59:59.000Z

318

Energy Conversion, Mixing Energy, and Neutral Surfaces with a Nonlinear Equation of State  

E-Print Network (OSTI)

Energy Conversion, Mixing Energy, and Neutral Surfaces with a Nonlinear Equation of State JONAS energy, it is generally assumed that it does not produce a restoring buoyancy force. However, it is here effect) such a neutral displacement is accompanied by a conversion between internal energy E

Nycander, Jonas

319

Electrostatic Conversion for Vibration Energy Harvesting  

E-Print Network (OSTI)

This chapter focuses on vibration energy harvesting using electrostatic converters. It synthesizes the various works carried out on electrostatic devices, from concepts, models and up to prototypes, and covers both standard (electret-free) and electret-based electrostatic vibration energy harvesters (VEH).

Boisseau, S; Seddik, B Ahmed

2012-01-01T23:59:59.000Z

320

Phase-change thermal energy storage: Final subcontract report  

DOE Green Energy (OSTI)

The research and development described in this document was conducted within the US Department of Energy's Solar Thermal Technology Program. The goal of this program is to advance the engineering and scientific understanding of solar thermal technology and to establish the technology base from which private industry can develop solar thermal power production options for introduction into the competitive energy market. Solar thermal technology concentrates the solar flux using tracking mirrors or lenses onto a receiver where the solar energy is absorbed as heat and converted into electricity or incorporated into products as process heat. The two primary solar thermal technologies, central receivers and distributed receivers, employ various point and line-focus optics to concentrate sunlight. Current central receiver systems use fields of heliostats (two-axes tracking mirrors) to focus the sun's radiant energy onto a single, tower-mounted receiver. Point focus concentrators up to 17 meters in diameter track the sun in two axes and use parabolic dish mirrors or Fresnel lenses to focus radiant energy onto a receiver. Troughs and bowls are line-focus tracking reflectors that concentrate sunlight onto receiver tubes along their focal lines. Concentrating collector modules can be used alone or in a multimodule system. The concentrated radiant energy absorbed by the solar thermal receiver is transported to the conversion process by a circulating working fluid. Receiver temperatures range from 100{degree}C in low-temperature troughs to over 1500{degree}C in dish and central receiver systems. 12 refs., 119 figs., 4 tabs.

Not Available

1989-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Energy Conversion and Storage Program. 1990 annual report  

DOE Green Energy (OSTI)

The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

Cairns, E.J.

1992-03-01T23:59:59.000Z

322

Nanostructured Functional Materials for Energy Conversion and ...  

Science Conference Proceedings (OSTI)

... V: Clean Coal-, Hydrogen Based-Technologies, Fuel Cells, and Materials for Energy Storage ... Deployment of New High Temperature Alloys for Power Generation Systems ... Materials Metrology for a Hydrogen Distribution Infrastructure.

323

Polymer Based Nanocomposites for Solar Energy Conversion  

DOE Green Energy (OSTI)

Organic semiconductor-based photovoltaic devices offer the promise of low cost photovoltaic technology that can be manufactured via large-scale, roll-to-roll printing techniques. Existing organic photovoltaic devices are currently limited to solar power conversion efficiencies of 3?5%. This is because of poor overlap between the absorption spectrum of the organic chromophores and the solar spectrum, non-ideal band alignment between the donor and acceptor species, and low charge carrier mobilities. To address these issues, we are investigating the development of dendrimeric organic semiconductors that are readily synthesized with high purity. They also benefit from optoelectronic properties, such as band gap and band positions, which can be easily tuned by substituting different chemical groups into the molecule. Additionally, we are developing nanostructured oxide/conjugated polymer composite photovoltaics. These composites take advantage of the high electron mobilities attainable in oxide semiconductors and can be fabricated using low-temperature solution-based growth techniques. Here, we discuss the synthesis and preliminary device results of these novel materials and composites.

Shaheen, S.; Olson, D.; White, M.; Mitchell, W.; Miedaner, A.; Curtis, C.; Rumbles, G.; Gregg, B.; Ginley, D.

2005-01-01T23:59:59.000Z

324

Supramolecular Structures for Photochemical Energy Conversion  

DOE Green Energy (OSTI)

OAK B188 The goal of this project is to mimic the energy transduction processes by which photosynthetic organisms harvest sunlight and convert it to forms of energy that are more easily used and stored. The results may lead to new technologies for solar energy harvesting based on the natural photosynthetic process. They may also enrich our understanding and control of photosynthesis in living organisms, and lead to methods for increasing natural biomass production, carbon dioxide removal, and oxygen generation. In our work to date, we have learned how to make synthetic antenna and reaction center molecules that absorb light and undergo photoinduced electron transfer to generate long-lived, energetic charge-separated states. We have assembled a prototype system in which artificial reaction centers are inserted into liposomes (artificial cell-like constructs), where they carry out light-driven transmembrane translocation of hydrogen ions to generate proton motive force. By insertion of natural ATP synthase into the liposomal bilayer, this proton motive force has been used to power the synthesis of ATP. ATP is a natural biological energy currency. We are carrying out a systematic investigation of these artificial photosynthetic energy harvesting constructs in order to understand better how they operate. In addition, we are exploring strategies for reversing the direction of the light-powered proton pumping. Most recently, we have extended these studies to develop a light-powered transmembrane calcium ion pump that converts sunlight into energy stored as a calcium ion concentration gradient across a lipid bilayer.

Gust, Devens; Moore, Thomas A.; Moore, Ana L.

2003-08-26T23:59:59.000Z

325

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion -  

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

Ceramic Electrochemistry Ceramic Electrochemistry * Members * Contact * Publications * Overview * Solid Oxide Fuel Cells * Steam Electrolysis Catalysis & Energy Conversion Home Ceramic Electrochemistry Dave Carter and solid oxide fuel cell Materials scientist John David Carter prepares a solid oxide electrochemical cell for high temperature testing. Research activities in the Ceramic Electrochemistry Group are focused on the development of ceramic-based electrochemical devices and components, such as Solid Oxide Fuel Cells (SOFC) and High Temperature Steam Electrolyzers (HTSE). This extends to materials synthesis, fabrication, and characterization. Solid Oxide Fuel Cell Research As part of the Solid State Energy Conversion Alliance (SECA) Core Technology Program, the goal of this research is the development of solid

326

Commercialization analysis of large wind energy conversion systems. Final report  

DOE Green Energy (OSTI)

The framework is described that can be used to evaluate potential new federal incentives to facilitate the market acceptance of utility-scale wind energy conversion systems. The insights gained from utilizing this framework to evaluate a variety of hypothetical federal incentives are discussed. The heart of the evaluation framework is an explicit representation of the decisions made by utility purchasers, suppliers, and government agencies with respect to the utilization and fabrication of large wind energy conversion systems. The demand-side and supply-side aspects of the multiparty commercialization model are described, and the model's struture is explained. (LEW)

Boyd, D.W.; Buckley, O.E.; Haas, S.M.

1980-06-01T23:59:59.000Z

327

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

OF THIS DOCUME THERMAL FOR COOLING ENERGY STORAGE BUILDINGSi- LBL-25393 THERMAL FOR COOLING w ENERGY STORAGE BUILDINGSpeak power periods, thermal storage for cooling has become a

Akbari, H.

2010-01-01T23:59:59.000Z

328

Guide to Setting Thermal Comfort Criteria and Minimizing Energy...  

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

Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use in Delivering Thermal Comfort Title Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use in...

329

Controlling Energy Costs with Coal Conversion  

E-Print Network (OSTI)

Even with a decade of substantial energy reduction in America's manufacturing plants and a temporary 'oil glut', energy often represents the largest plant expense, higher than labor or raw materials. Energy is not only a major plant expense; it is usually regarded as the most controllable. Fluidized bed combustion technology allows industrial steam users to use low-grade coals that are outside of mainstream coal markets, are abundant, and are very inexpensive, being one-quarter to one-third the price of oil or gas. This paper discusses the economics of low-grade coal, what is fluidized bed technology and its comparison to conventional coal and gas/oil fired systems, and one coal-fired FBC installation in Texas.

Sadowski, R. S.; von Hippel, C. S.

1984-01-01T23:59:59.000Z

330

Solar energy thermalization and storage device  

DOE Patents (OSTI)

A passive solar thermalization and thermal energy storage assembly which is visually transparent. The assembly consists of two substantial parallel, transparent wall members mounted in a rectangular support frame to form a liquid-tight chamber. A semitransparent thermalization plate is located in the chamber, substantially paralled to and about equidistant from the transparent wall members to thermalize solar radiation which is stored in a transparent thermal energy storage liquid which fills the chamber. A number of the devices, as modules, can be stacked together to construct a visually transparent, thermal storage wall for passive solar-heated buildings.

McClelland, John F. (Ames, IA)

1981-09-01T23:59:59.000Z

331

Energy Basics: Ocean Energy Technologies  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

332

This paper is published as part of a Dalton Transactions themed issue on: Solar Energy Conversion  

E-Print Network (OSTI)

This paper is published as part of a Dalton Transactions themed issue on: Solar Energy Conversion and Paul King, Dalton Trans., 2009, DOI: 10.1039/b913426n Solar energy conversion in a photoelectrochemical and the optimization of solar energy conversion using DSSCs.7­9 Currently, the maximum solar conversion efficiency

333

Energy conversion in Purple Bacteria Photosynthesis  

E-Print Network (OSTI)

The study of how photosynthetic organisms convert light offers insight not only into nature's evolutionary process, but may also give clues as to how best to design and manipulate artificial photosynthetic systems -- and also how far we can drive natural photosynthetic systems beyond normal operating conditions, so that they can harvest energy for us under otherwise extreme conditions. In addition to its interest from a basic scientific perspective, therefore, the goal to develop a deep quantitative understanding of photosynthesis offers the potential payoff of enhancing our current arsenal of alternative energy sources for the future. In the following Chapter, we consider the trade-off between dynamics, structure and function of light harvesting membranes in Rps. Photometricum purple bacteria, as a model to highlight the priorities that arise when photosynthetic organisms adapt to deal with the ever-changing natural environment conditions.

Caycedo-Soler, Felipe; Quiroga, Luis; Zhao, Guannan; Johnson, Neil F

2011-01-01T23:59:59.000Z

334

Energy conversion in Purple Bacteria Photosynthesis  

E-Print Network (OSTI)

The study of how photosynthetic organisms convert light offers insight not only into nature's evolutionary process, but may also give clues as to how best to design and manipulate artificial photosynthetic systems -- and also how far we can drive natural photosynthetic systems beyond normal operating conditions, so that they can harvest energy for us under otherwise extreme conditions. In addition to its interest from a basic scientific perspective, therefore, the goal to develop a deep quantitative understanding of photosynthesis offers the potential payoff of enhancing our current arsenal of alternative energy sources for the future. In the following Chapter, we consider the trade-off between dynamics, structure and function of light harvesting membranes in Rps. Photometricum purple bacteria, as a model to highlight the priorities that arise when photosynthetic organisms adapt to deal with the ever-changing natural environment conditions.

Felipe Caycedo-Soler; Ferney J. Rodriguez; Luis Quiroga; Guannan Zhao; Neil F. Johnson

2011-07-01T23:59:59.000Z

335

Ammonia as an Alternative Energy Storage Medium for Hydrogen Fuel Cells: Scientific and Technical Review for Near-Term Stationary Power Demonstration Projects, Final Report  

E-Print Network (OSTI)

ocean thermal energy conversion (OTEC) systems, where plantto conversion efficiencies and system energy balances;to conversion efficiencies and system energy balances;

Lipman, Tim; Shah, Nihar

2007-01-01T23:59:59.000Z

336

Ocean Thermal | Open Energy Information  

Open Energy Info (EERE)

Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon Ocean Thermal Jump to: navigation, search TODO: Add description List of Ocean Thermal Incentives...

337

Introduction to Solar Energy Conversion Solar energy represents the largest energy input into the terrestrial system. Despite its  

E-Print Network (OSTI)

of the resource to allow supply to meet demand at all times. Photovoltaic energy conversion efficiency hasIntroduction to Solar Energy Conversion Solar energy represents the largest energy input the global energy demand on its own. The challenges that need to be addressed to make solar energy viable

Nur, Amos

338

Thermal Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Energy Systems Energy Systems Jump to: navigation, search Name Thermal Energy Systems Place London, United Kingdom Sector Biomass Product UK based company that constructs and installs boilers for biomass projects. Coordinates 51.506325°, -0.127144° 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":51.506325,"lon":-0.127144,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

339

Thermal energy storage for cogeneration applications  

DOE Green Energy (OSTI)

Cogeneration is playing an increasingly important role in providing energy efficient power generation and thermal energy for space heating and industrial process heat applications. However, the range of applications for cogeneration could be further increased if the generation of electricity could be coupled from the generation of process heat. Thermal energy storage (TES) can decouple power generation from the production of process heat, allowing the production of dispatchable power while fully utilizing the thermal energy available from the prime mover. The Pacific Northwest Laboratory (PNL) leads the US Department of Energy`s Thermal Energy Storage Program. The program focuses on developing TES for daily cycling (diurnal storage), annual cycling (seasonal storage), and utility applications (utility thermal energy storage (UTES)). Several of these technologies can be used in a cogeneration facility. This paper discusses TES concepts relevant to cogeneration and describes the current status of these TES systems.

Drost, M.K.; Antoniak, Z.I.

1992-04-01T23:59:59.000Z

340

Solar Thermal Technologies Available for Licensing - Energy ...  

Solar Thermal Technologies Available for Licensing U.S. Department of Energy (DOE) laboratories and participating research institutions have concentrating solar power ...

Note: This page contains sample records for the topic "thermal energy conversion" 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

Graphene-based Electrochemical Energy Conversion and Storage: Fuel cells, Supercapacitors and Lithium Ion Batteries  

SciTech Connect

Graphene has attracted extensive research interest due to its strictly 2-dimensional (2D) structure, which results in its unique electronic, thermal, mechanical, and chemical properties and potential technical applications. These remarkable characteristics of graphene, along with the inherent benefits of a carbon material, make it a promising candidate for application in electrochemical energy devices. This article reviews the methods of graphene preparation, introduces the unique electrochemical behavior of graphene, and summarizes the recent research and development on graphene-based fuel cells, supercapacitors and lithium ion batteries. In addition, promising areas are identified for the future development of graphene-based materials in electrochemical energy conversion and storage systems.

Hou, Junbo; Shao, Yuyan; Ellis, Michael A.; Moore, Robert; Yi, Baolian

2011-09-14T23:59:59.000Z

342

Future of photovoltaic energy conversion in developing countries  

DOE Green Energy (OSTI)

Recent studies reveal that photovoltaic energy conversion will be economically viable for usage in developing countries. An overview of programs designed to lower the costs of such conversion systems is presented. Government goals are reviewed, as well as application projects relative to rural usage. A summary of the state-of-the-art in both advanced research and commercially available technology is presented. It is concluded that with the range of the work being done, such systems will be viable for many rural applications within 5 years.

Hogan, S.

1980-04-01T23:59:59.000Z

343

Thermal energy storage for cogeneration applications  

SciTech Connect

Cogeneration is playing an increasingly important role in providing energy efficient power generation and thermal energy for space heating and industrial process heat applications. However, the range of applications for cogeneration could be further increased if the generation of electricity could be coupled from the generation of process heat. Thermal energy storage (TES) can decouple power generation from the production of process heat, allowing the production of dispatchable power while fully utilizing the thermal energy available from the prime mover. The Pacific Northwest Laboratory (PNL) leads the US Department of Energy's Thermal Energy Storage Program. The program focuses on developing TES for daily cycling (diurnal storage), annual cycling (seasonal storage), and utility applications (utility thermal energy storage (UTES)). Several of these technologies can be used in a cogeneration facility. This paper discusses TES concepts relevant to cogeneration and describes the current status of these TES systems.

Drost, M.K.; Antoniak, Z.I.

1992-04-01T23:59:59.000Z

344

Thermal energy storage for cogeneration applications  

DOE Green Energy (OSTI)

Cogeneration is playing an increasingly important role in providing energy efficient power generation and thermal energy for space heating and industrial process heat applications. However, the range of applications for cogeneration could be further increased if the generation of electricity could be coupled from the generation of process heat. Thermal energy storage (TES) can decouple power generation from the production of process heat, allowing the production of dispatchable power while fully utilizing the thermal energy available from the prime mover. The Pacific Northwest Laboratory (PNL) leads the US Department of Energy's Thermal Energy Storage Program. The program focuses on developing TES for daily cycling (diurnal storage), annual cycling (seasonal storage), and utility applications (utility thermal energy storage (UTES)). Several of these technologies can be used in a cogeneration facility. This paper discusses TES concepts relevant to cogeneration and describes the current status of these TES systems.

Drost, M.K.; Antoniak, Z.I.

1992-04-01T23:59:59.000Z

345

SOLID STATE ENERGY CONVERSION ALLIANCE DELPHI SOFC  

Science Conference Proceedings (OSTI)

The objective of Phase I under this project is to develop a 5 kW Solid Oxide Fuel Cell power system for a range of fuels and applications. During Phase I, the following will be accomplished: Develop and demonstrate technology transfer efforts on a 5 kW stationary distributed power generation system that incorporates steam reforming of natural gas with piped-in water (Demonstration System A); and Initiate development of a 5 kW system for later mass-market automotive auxiliary power unit application, which will incorporate Catalytic Partial Oxidation (CPO) reforming of gasoline, with anode exhaust gas injected into an ultra-lean burn internal combustion engine. This technical progress report covers work performed by Delphi from July through December 2002 under Department of Energy Cooperative Agreement DE-FC-02NT41246 for the 5 kW mass-market automotive (gasoline) auxiliary power unit. This report highlights technical results of the work performed under the following tasks for the automotive 5 kW system: Task 1--System Design and Integration; Task 2--Solid Oxide Fuel Cell Stack Developments; Task 3--Reformer Developments; Task 4--Development of Balance of Plant (BOP) Components; Task 5--Manufacturing Development (Privately Funded); Task 6--System Fabrication; and Task 7--System Testing.

Steven Shaffer; Sean Kelly; Subhasish Mukerjee; David Schumann; H. Skip Mieney

2003-06-09T23:59:59.000Z

346

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

components and moving parts, such as pumps, heat exchangers,as heat exchangers and pumps. The numerous moving parts alsopumps and heat exchangers as well as the large number of moving parts.

Lim, Hyuck

2011-01-01T23:59:59.000Z

347

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

various types of Stirling engine have been developed, whichThermogalvanic cell Stirling Engine ORC Internal Combustion

Lim, Hyuck

2011-01-01T23:59:59.000Z

348

Ocean Thermal Energy Conversion - Energy Explained, Your Guide To ...  

U.S. Energy Information Administration (EIA)

Landfill Gas and Biogas; Biomass & the Environment See also: Biofuels. Biofuels: Ethanol & Biodiesel. Ethanol; Use of Ethanol; Ethanol & the Environment; Biodiesel;

349

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

various types of Stirling engine have been developed, whichThermogalvanic cell Stirling Engine ORC Internal Combustionof Sterling engine [17] year inventor Robert Stirling John

Lim, Hyuck

2011-01-01T23:59:59.000Z

350

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

of Amorphous Gallium Indium Zinc Oxide NonvolatileAmorphous gallium indium zinc oxide thin film transistors:Effects in Amorphous GalliumIndium Zinc- xv Oxide Thin Film

Lim, Hyuck

2011-01-01T23:59:59.000Z

351

Contributions to Key Energy Conversion Technologies and Advanced Methods  

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

Contributions to Key Energy Conversion Technologies and Advanced Methods Contributions to Key Energy Conversion Technologies and Advanced Methods for Optimum Energy Systems Design and Planning Speaker(s): Daniel Favrat Date: February 27, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare This presentation reviews some of EPFL-LENI's recent contributions to advanced cogeneration and heat pump technologies as well as to new system design approaches based on multimodal evolutionar algorithms. In the field of cogeneration, theoretical and experimental results show that gas engines with unscavenged ignition prechambers can, without the need of a catalyst, achieve high efficiencies with reasonable emissions with both natural gas and biogas. Combination with Organic Rankine Cycle (ORC) heat recovery

352

April 2013 Most Viewed Documents for Energy Storage, Conversion, And  

Office of Scientific and Technical Information (OSTI)

April 2013 Most Viewed Documents for Energy Storage, Conversion, And April 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Seventh Edition Fuel Cell Handbook NETL (2004) 628 Continuously variable transmissions: theory and practice Beachley, N.H.; Frank, A.A. (null) 205 A study of lead-acid battery efficiency near top-of-charge and the impact on PV system design Stevens, J.W.; Corey, G.P. (1996) 173 Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005) 153 Building a secondary containment system Broder, M.F. (1994) 144 An Improved Method of Manufacturing Corrugated Boxes: Lateral Corrugator Frank C. Murray Ph.D.; , Roman Popil Ph.D.; Michael Shaepe (formerly with IPST, now at Cargill. Inc) (2008) 141 Ammonia usage in vapor compression for refrigeration and air-conditioning in the United States

353

Improved Calculation of Thermal Fission Energy  

E-Print Network (OSTI)

Thermal fission energy is one of the basic parameters needed in the calculation of antineutrino flux for reactor neutrino experiments. It is useful to improve the precision of the thermal fission energy calculation for current and future reactor neutrino experiments, which are aimed at more precise determination of neutrino oscillation parameters. In this article, we give new values for thermal fission energies of some common thermal reactor fuel iso-topes, with improvements on two aspects. One is more recent input data acquired from updated nuclear databases. The other, which is unprecedented, is a consideration of the production yields of fission fragments from both thermal and fast incident neutrons for each of the four main fuel isotopes. The change in calculated antineutrino flux due to the new values of thermal fission energy is about 0.33%, and the uncertainties of the new values are about 30% smaller.

Ma, X B; Wang, L Z; Chen, Y X; Cao, J

2013-01-01T23:59:59.000Z

354

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network (OSTI)

Key to Large-Scale Cogeneration?" Public Power, v, 35, no.Thermal Energy Storage for Cogeneration and Solar Systems,"Energy Storage for Cogeneration and Solar Systems, tion from

Authors, Various

2011-01-01T23:59:59.000Z

355

Table B1. Metric Conversion Factors - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

334 U.S. Energy Information Administration / Annual Energy Review 2011 aExact conversion. bCalculated by the U.S. Energy Information Administration.

356

Thermal Monitoring Approaches for Energy Savings Verification  

E-Print Network (OSTI)

This paper reviews and summarizes techniques for monitoring thermal energy flows for the purpose of verifying energy savings in industrial and large institutional energy conservation projects. Approaches for monitoring hot and chilled water, steam, steam condensate and boiler feedwater in large facilities are described. Insights gained and lessons learned through the actual in-field installation of thermal monitoring equipment for energy savings verification purposes at over 100 sites at various locations throughout the United States are presented.

McBride, J. R.; Bohmer, C. J.; Lippman, R. H.; Zern, M. J.

1996-04-01T23:59:59.000Z

357

Hydrogen Energy Stations: Poly-Production of Electricity, Hydrogen, and Thermal Energy  

E-Print Network (OSTI)

Electricity, Hydrogen, and Thermal Energy Timothy E. LipmanElectricity, Hydrogen, and Thermal Energy Timothy E. Lipmanof electricity, hydrogen, and thermal energy; 2) a survey of

Lipman, Timothy; Brooks, Cameron

2006-01-01T23:59:59.000Z

358

Direct Solar Energy Conversion by the Reduction of CO2  

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

Direct Solar Energy Conversion by the Reduction of CO2 Direct Solar Energy Conversion by the Reduction of CO2 Speaker(s): Reed Jensen Date: August 25, 2005 - 12:00pm Location: Bldg. 90 Reed Jensen has successfully demonstrated the direct solar reduction of CO2 to CO and O2 using a solar concentrator dish and ceramic converter that grew out of his work at Los Alamos National Laboratory. He will discuss the thermochemical, kinetic and spectral properties of the CO2 /CO/ O2 system that enable this process and how the CO is subsequently converted to useful fuels by a range of catalytic processes. He will also discuss the technical difficulties associated with the design, construction and operation of a multi-component optical system that must operate at high temperatures. Results from a prototype system will be discussed defining the efficiencies

359

September 2013 Most Viewed Documents for Energy Storage, Conversion, And  

Office of Scientific and Technical Information (OSTI)

September 2013 Most Viewed Documents for Energy Storage, Conversion, And September 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) 169 Evaluation of the 2010 Toyota Prius Hybrid Synergy Drive System Burress, Timothy A [ORNL]; Campbell, Steven L [ORNL]; Coomer, Chester [ORNL]; Ayers, Curtis William [ORNL]; Wereszczak, Andrew A [ORNL]; Cunningham, Joseph Philip [ORNL]; Marlino, Laura D [ORNL]; Seiber, Larry Eugene [ORNL]; Lin, Hua-Tay [ORNL] (2011) 116 Evaluation of the 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, S.L.; Seiber, L.E.; Marlino, L.D.; Staunton, R.H.; Cunningham, J.P. (2008) 102 A study of lead-acid battery efficiency near top-of-charge and the impact on PV system design

360

Most Viewed Documents - Energy Storage, Conversion, and Utilization | OSTI,  

Office of Scientific and Technical Information (OSTI)

Most Viewed Documents - Energy Storage, Conversion, and Utilization Most Viewed Documents - Energy Storage, Conversion, and Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) Continuously variable transmissions: theory and practice Beachley, N.H.; Frank, A.A. () Review of air flow measurement techniques McWilliams, Jennifer (2002) Building a secondary containment system Broder, M.F. (1994) Cost benefit analysis of the night-time ventilative cooling in office building Seppanen, Olli; Fisk, William J.; Faulkner, David (2003) Evaluation of the 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, S.L.; et al. (2008) Nanofluid technology : current status and future research. Choi, S. U.-S. (1998) An Improved Method of Manufacturing Corrugated Boxes: Lateral

Note: This page contains sample records for the topic "thermal energy conversion" 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

Thermophotovoltaic energy conversion using photonic bandgap selective emitters  

DOE Patents (OSTI)

A method for thermophotovoltaic generation of electricity comprises heating a metallic photonic crystal to provide selective emission of radiation that is matched to the peak spectral response of a photovoltaic cell that converts the radiation to electricity. The use of a refractory metal, such as tungsten, for the photonic crystal enables high temperature operation for high radiant flux and high dielectric contrast for a full 3D photonic bandgap, preferable for efficient thermophotovoltaic energy conversion.

Gee, James M. (Albuquerque, NM); Lin, Shawn-Yu (Albuquerque, NM); Fleming, James G. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

2003-06-24T23:59:59.000Z

362

NREL's Advanced Thermal Conversion Laboratory at the Center for Buildings and Thermal Systems: On the Cutting-Edge of HVAC and CHP Technology (Revised)  

DOE Green Energy (OSTI)

This brochure describes how the unique testing capabilities of NREL's Advanced Thermal Conversion Laboratory at the Center For Buildings and Thermal Systems can help industry meet the challenge of developing the next generation of heating, ventilating, and air-conditioning (HVAC) and combined heat and power (CHP) equipment and concepts.

Not Available

2005-09-01T23:59:59.000Z

363

Enhancement of specific heat capacity of high-temperature silica-nanofluids synthesized in alkali chloride salt eutectics for solar thermal-energy  

E-Print Network (OSTI)

chloride salt eutectics for solar thermal-energy storage applications Donghyun Shin, Debjyoti Banerjee solution, resulting in degradation of the thermal properties. Solar energy conversion to electricity is achieved primarily by using (a) photovoltaic technology, or (b) by harnessing solar thermal-energy

Banerjee, Debjyoti

364

DIRECT ENERGY CONVERSION FISSION REACTOR FOR THE PERIOD JUNE 1, 2001 THROUGH SEPTEMBER 30, 2001  

DOE Green Energy (OSTI)

OAK-B135 DIRECT ENERGY CONVERSION FISSION REACTOR FOR THE PERIOD JUNE 1, 2001 THROUGH SEPTEMBER 30, 2001

L.C. BROWN

2001-09-30T23:59:59.000Z

365

Direct Energy Conversion Fission Reactor for the period December 1, 1999 through February 29, 2000  

DOE Green Energy (OSTI)

OAK B135 Direct Energy Conversion Fission Reactor for the period December 1, 1999 through February 29, 2000

Brown, L.C.

2000-03-20T23:59:59.000Z

366

Applied research on energy storage and conversion for photovoltaic and wind energy systems. Volume III. Wind conversion systems with energy storage. Final report  

DOE Green Energy (OSTI)

The variability of energy output inherent in wind energy conversion systems (WECS) has led to the investigation of energy storage as a means of managing the available energy when immediate, direct use is not possible or desirable. This portion of the General Electric study was directed at an evaluation of those energy storage technologies deemed best suited for use in conjunction with a wind energy conversion system in utility, residential and intermediate applications. Break-even cost goals are developed for several storage technologies in each application. These break-even costs are then compared with cost projections presented in Volume I of this report to show technologies and time frames of potential economic viability. The report summarizes the investigations performed and presents the results, conclusions and recommendations pertaining to use of energy storage with wind energy conversion systems.

Not Available

1978-01-01T23:59:59.000Z

367

(Small scale wind energy conversion programmatic equipment. Final report)  

SciTech Connect

The purpose of this project is to provide South Dakota citizens with a case study of the institutional and technical problems encountered in the installation, maintenance and use of a small wind energy system. The project will provide information on wind turbine reliability, maintenance requirements and power production to demonstrate the feasibility of small-scale wind energy conversion projects for South Dakota. The system was installed by vocational students and instructors at Mitchell Vocational School. It has been in operation since the fall of 1983.

Wegman, S.

1985-05-20T23:59:59.000Z

368

Optimisation of a Small Non Controlled Wind Energy Conversion System for Stand-Alone Applications  

E-Print Network (OSTI)

Optimisation of a Small Non Controlled Wind Energy Conversion System for Stand-Alone Applications. This article proposes a method to optimize the design of a small fixed-voltage wind energy conversion system are shown and discussed. Key words Wind energy conversion system, stand-alone application, nonlinear

Paris-Sud XI, Université de

369

The State of the Art of Generators for Wind Energy Conversion Systems  

E-Print Network (OSTI)

The State of the Art of Generators for Wind Energy Conversion Systems Yassine Amirat, Mohamed Benbouzid, Bachir Bensaker and René Wamkeue Abstract--Wind Energy Conversion Systems (WECS) have become. I. INTRODUCTION Wind energy conversion is the fastest-growing source of new electric generation

Paris-Sud XI, Université de

370

EXPERIMENTAL AND THEORETICAL STUDIES OF THERMAL ENERGY STORAGE IN AQUIFERS  

E-Print Network (OSTI)

In Proceed- ings of Thermal Energy Storage in Aquifers Work-Mathematical Modeling of Thermal Energy storage in Aquifers.In Proceed- ings of Thermal Energy Storage in Aquifers Work-

Tsang, Chin Fu

2011-01-01T23:59:59.000Z

371

Definition: British thermal unit | Open Energy Information  

Open Energy Info (EERE)

thermal unit thermal unit Jump to: navigation, search Dictionary.png British thermal unit The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit; often used as a unit of measure for the energy content of fuels.[1][2] View on Wikipedia Wikipedia Definition The British thermal unit (BTU or Btu) is a traditional unit of energy equal to about 1055 joules. It is the amount of energy needed to cool or heat one pound of water by one degree Fahrenheit. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the joule. The unit is most often used as a measure of power (as BTU/h) in the power, steam generation, heating, and air conditioning industries, and also as a measure of agricultural energy production (BTU/kg). It is still used

372

Ecological analysis of spatial and temporal patterns of pelagic ecosystem components potentially interacting with an OTEC (Ocean Thermal Energy Conversion) plant near Punta Tuna, Puerto Rico: physical characteristics. Final report  

SciTech Connect

This hydrographic study characterizes the Punta Tuna area as a potential site for an OTEC power plant. Seven cruises were conducted at approximately two month intervals. Each cruise included at least 22 hydrocast stations, six done as serial stations in a small area to reveal temporal and small scale variability. The results of the analysis of these data so far indicate a bi-seasonality in the dynamics. Mesoscale eddies and meanders are a common feature of the circulation pattern on Puerto Rico's southern coast. The time series studies have shown their existence of a very energetic internal wave field with relatively large amplitude waves at the diurnal and semi-diurnal tidal frequencies. The results in terms of an OTEC power plant indicate the thermal resource to be at least a 20C thermal gradient in the upper 100 m year round.

Lopez, J.M.; Tilly, L.J.

1983-01-01T23:59:59.000Z

373

Thermally-Activated Technologies | Department of Energy  

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

Thermally-Activated Technologies Thermally-Activated Technologies Thermally-Activated Technologies November 1, 2013 - 11:40am Addthis Thermally-activated technologies include a diverse portfolio of equipment that transforms heat for useful purposes such as heating, cooling, humidity control, thermal storage, and shaft/electrical power. Thermally-activated technologies are essential for combined heat and power (CHP)-integrated systems that maximize energy savings and economic return. Thermally-activated technologies systems also enable customers to reduce seasonal peak electric demand and future electric and gas grids to operate with more level loads. Absorption Chillers Absorption cycles have been used for more than 150 years. Early equipment used a mixture of ammonia and water as an absorption working pair, with

374

ANALYSIS OF THE PERFORMANCE AND COST EFFECTIVENESS OF NINE SMALL WIND ENERGY CONVERSION SYSTEMS FUNDED BY THE DOE SMALL GRANTS PROGRAM  

E-Print Network (OSTI)

B. Dawley, I. Wind Energy Conversion System Monitoring &ment of Wind Energy Conversion Systems, Los AlamosCommerical Wind Energy Conversion System Monitoring and

Kay, J.

2009-01-01T23:59:59.000Z

375

Systems analysis of solar thermal power systems. Report on Task 1: determination and characterization of solar thermal conversion options  

SciTech Connect

Seven general solar thermal conversion concepts were selected initially. The literature review confirmed that these are the only concepts that are developed to a level suitable for inclusion in the comparative analysis to be performed. A summary of information pertaining to these concepts is given and the concepts are briefly described. The information presented is abstracted from applicable references presented in the bibliography. The bibliography and a list of the major contacts established are included in appendices. The seven concepts are: point-focusing distributed receiver system; point focusing, central receiver systems; fixed mirror/distributed focus system; line-focus central receiver system; line-focus distributed receiver system; fixed mirror line-focus distributed receiver system, and low concentrator non-tracking systems. (WHR)

Apley, W.J.

1978-07-01T23:59:59.000Z

376

Static power conversion techniques for unique energy devices  

E-Print Network (OSTI)

Solar power, fuel cells, and supercapacitors are some hics. of the new energy devices that are being used today in various power applications. The first two of these devices are exciting alternative sources of clean energy. The third device is an important new energy storage device that has some properties of a battery and a capacitor allowing it to be used in applications where attributes of both are needed. To realize the full potential of these energy sources, novel engineering strategies have to be implemented to manage the conversion of power. Since these devices are relatively new and their development is constantly maturing, a introduction to these devices will be a useful to those unfamiliar with the state of the art of solar cells, fuel cells, and supercapacitors. In this paper characteristics of each technology will be reviewed and design consideration will be discussed, and methods of utilizing each of these devices will be offered.

Welch, Richard Andrew

1998-01-01T23:59:59.000Z

377

Model Predictive Control of Thermal Energy Storage in Building...  

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

Model Predictive Control of Thermal Energy Storage in Building Cooling Systems Title Model Predictive Control of Thermal Energy Storage in Building Cooling Systems Publication Type...

378

SunShot Initiative: Innovative Phase Change Thermal Energy Storage...  

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

Innovative Phase Change Thermal Energy Storage Solution for Baseload Power to someone by E-mail Share SunShot Initiative: Innovative Phase Change Thermal Energy Storage Solution...

379

Poster: Thermal Energy Storage for Electricity Peak-demand Mitigation...  

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

Poster: Thermal Energy Storage for Electricity Peak-demand Mitigation: A Solution in Developing and Developed World Alike Title Poster: Thermal Energy Storage for Electricity...

380

SunShot Initiative: Innovative Thermal Energy Storage for Baseload...  

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

Innovative Thermal Energy Storage for Baseload Solar Power Generation to someone by E-mail Share SunShot Initiative: Innovative Thermal Energy Storage for Baseload Solar Power...

Note: This page contains sample records for the topic "thermal energy conversion" 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

Energy Basics: Ocean Resources  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

382

Improved Calculation of Thermal Fission Energy  

E-Print Network (OSTI)

Thermal fission energy is one of the basic parameters needed in the calculation of antineutrino flux for reactor neutrino experiments. It is useful to improve the precision of the thermal fission energy calculation for current and future reactor neutrino experiments, which are aimed at more precise determination of neutrino oscillation parameters. In this article, we give new values for thermal fission energies of some common thermal reactor fuel isotopes, with improvements on three aspects. One is more recent input data acquired from updated nuclear databases. the second one is a consideration of the production yields of fission fragments from both thermal and fast incident neutrons for each of the four main fuel isotopes. The last one is more carefully calculation of the average energy taken away by antineutrinos in thermal fission with the comparison of antineutrino spectrum from different models. The change in calculated antineutrino flux due to the new values of thermal fission energy is about 0.32%, and the uncertainties of the new values are about 50% smaller.

X. B. Ma; W. L. Zhong; L. Z. Wang; Y. X. Chen; J. Cao

2012-12-29T23:59:59.000Z

383

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion -  

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

Atom-Efficient Chemical Transformations Atom-Efficient Chemical Transformations iact logo Argonne National Laboratory along with its academic partners has established an Energy Frontier Research Center, the Institute for Atom-efficient Chemical Transformations (IACT) whose focus is to advance the science of catalysis for the efficient conversion of energy resources into usable forms. IACT is one of 46 Energy Frontier Research Centers that DOE has established in the United States. IACT is a partnership among world-class scientists at Argonne National Laboratory, Northwestern University, Purdue University, University of Wisconsin-Madison, and Brookhaven National Laboratory. Using a multidisciplinary approach involving integrated catalyst synthesis, advanced characterization, catalytic experimentation, and computation, IACT is addressing key

384

Focus Area 2 - Biomass Deconstruction and Conversion : BioEnergy...  

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

Deconstruction and Conversion BESC research in biomass deconstruction and conversion targets CBP by studying model organisms and thermophilic anaerobes to understand novel...

385

Penrose Landfill Gas Conversion LLC | Open Energy Information  

Open Energy Info (EERE)

Penrose Landfill Gas Conversion LLC Jump to: navigation, search Name Penrose Landfill Gas Conversion LLC Place Los Angeles, California Product Owner of landfill gas plant....

386

Solar Thermal Incentive Program | Department of Energy  

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

Thermal Incentive Program Thermal Incentive Program Solar Thermal Incentive Program < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Local Government Multi-Family Residential Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Residential: $4,000 per site/meter Non-residential: $25,000 per site/meter Incentive also capped at 80% of calculated existing thermal load Program Info Funding Source RPS surcharge Start Date 12/10/2010 Expiration Date 12/31/2015 State New York Program Type State Rebate Program Rebate Amount $1.50 per kWh displaced annually, for displacement of up to 80% of calculated existing thermal load Provider New York State Energy Research and Development Authority The New York State Energy Research and Development Authority (NYSERDA)

387

SOLID STATE ENERGY CONVERSION ALLIANCE (SECA) SOLID OXIDE FUEL CELL PROGRAM  

DOE Green Energy (OSTI)

This report summarizes the work performed for April 2003--September 2003 reporting period under Cooperative Agreement DE-FC26-01NT41245 for the U.S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid State Energy Conversion Alliance (SECA) Solid oxide Fuel Cell Program''. During this reporting period, the conceptual system design activity was completed. The system design, including strategies for startup, normal operation and shutdown, was defined. Sealant and stack materials for the solid oxide fuel cell (SOFC) stack were identified which are capable of meeting the thermal cycling and degradation requirements. A cell module was tested which achieved a stable performance of 0.238 W/cm{sup 2} at 95% fuel utilization. The external fuel processor design was completed and fabrication begun. Several other advances were made on various aspects of the SOFC system, which are detailed in this report.

Nguyen Minh; Jim Powers

2003-10-01T23:59:59.000Z

388

Solar Thermal Incentive Program | Department of Energy  

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

Solar Thermal Incentive Program Solar Thermal Incentive Program Solar Thermal Incentive Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate 50% of the project cost Program Info Funding Source Public Benefits Fund State Connecticut Program Type State Rebate Program Rebate Amount Calculated: $70 multiplied by the SRCC "C" rating multiplied by the number of collectors multiplied by the Shading Factor Provider Clean Energy Finance and Investment Authority Note: This program is not currently accepting applications. Check the program web site for information regarding future financing programs. To participate in the residential solar hot water rebate, homeowners must first complete an energy assessment. Then, they must work with CEFIA

389

Photovoltaic energy conversion The objective of this laboratory is for you to explore the science and engineering of the conversion of  

E-Print Network (OSTI)

Photovoltaic energy conversion Objective The objective of this laboratory is for you to explore the photovoltaic energy conversion process is optimal only for photons with energies above, but not too far the science and engineering of the conversion of light to electricity by photovoltaic devices. Preparation

Braun, Paul

390

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

the replacement of non-renewable energy production. Unlikereplacement of non-renewable energy sources. The thermal

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

391

EIA Renewable Energy- Average Energy Conversion Efficiency of ...  

U.S. Energy Information Administration (EIA)

Renewables and Alternate Fuels > Solar Photovoltaic Cell/Module Annual Report > Annual Shipments of Photovoltaic Cells and Modules by Source: Average Energy ...

392

IEEE TRANSACTIONS ON ENERGY CONVERSION, 2006 1 Distributed Control Agents Approach to Energy  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON ENERGY CONVERSION, 2006 1 Distributed Control Agents Approach to Energy a new scheme for an energy management system in the form of distributed control agents. The control and a minimum amount of communication. A case study using the distributed agents within a multilayer system

Lai, Hong-jian

393

Combustion and direct energy conversion in a micro-combustor  

E-Print Network (OSTI)

The push toward the miniaturization of electromechanical devices and the resulting need for micro-power generation (milliwatts to watts) with low-weight, long-life devices has led to the recent development of the field of micro-scale combustion. Since batteries have low specific energy (~200 kJ/kg) and liquid hydrocarbon fuels have a very high specific energy (~50000 kJ/kg), a miniaturized power-generating device, even with a relatively inefficient conversion of hydrocarbon fuels to power, would result in increased lifetime and/or reduced weight of an electronic or mechanical system that currently requires batteries for power. Energy conversion from chemical energy to electrical energy without any moving parts can be achieved by a thermophotovoltaic (TPV) system. The TPV system requires a radiation source which is provided by a micro-combustor. Because of the high surface area to volume ratio for micro-combustor, there is high heat loss (proportional to area) compared to heat generation (proportional to volume). Thus the quenching and flammability problems are more critical in a micro-scale combustor. Hence innovative schemes are required to improve the performance of micro-combustion. In the current study, a micro-scale counter flow combustor with heat recirculation is adapted to improve the flame stability in combustion modeled for possible application to a TPV system. The micro-combustor consists of two annular tubes with an inner tube of diameter 3 mm and 30 mm long and an outer tube of 4.2 mm diameter and 30 mm long. The inner tube is supplied with a cold premixed combustible mixture, ignited and burnt. The hot produced gases are then allowed to flow through outer tube which supplies heat to inner tube via convection and conduction. The hot outer tube radiates heat to the TPV system. Methane is selected as the fuel. The model parameters include the following: diameter d , inlet velocity u , equivalence ratio Ï? and heat recirculation efficiency ?· between the hot outer flow and cold inner flow. The predicted performance results are as followings: the lean flammability limit increased from 7.69% to 7.86% and the quenching diameter decreased from 1.3 mm to 0.9 mm when heat recirculation was employed. The overall energy conversion efficiency of current configuration is about 2.56.

Lei, Yafeng

2005-08-01T23:59:59.000Z

394

EXPERIMENTAL AND THEORETICAL STUDIES OF THERMAL ENERGY STORAGE IN AQUIFERS  

E-Print Network (OSTI)

Department of Energy, Energy Storage Division through thegeneration and energy storage, Presented at Frontiers ofIn Proceed- ings of Thermal Energy Storage in Aquifers Work-

Tsang, Chin Fu

2011-01-01T23:59:59.000Z

395

Plasmadynamics and ionization kinetics of thermionic energy conversion  

DOE Green Energy (OSTI)

To reduce the plasma arc-drop, thermionic energy conversion is studied with both analytical and numerical tools. Simplifications are made in both the plasmadynamic and ionization-recombination theories. These are applied to a scheme proposed presently using laser irradiation to enhance the ionization kinetics of the thermionic plasma and thereby reduce the arc-drop. It is also predicted that it is possible to generate the required laser light from a thermionic-type cesium plasma. The analysis takes advantage of theoretical simplifications derived for the ionization-recombination kinetics. It is shown that large laser ionization enhancements can occur and that collisional cesium recombination lasing is expected. To complement the kinetic theory, a numerical method is developed to solve the thermionic plasma dynamics. To combine the analysis of ionization-recombination kinetics with the plasma dynamics of thermionic conversion, a finite difference computer program is constructed. It is capable of solving for both unsteady and steady thermionic converter behavior including possible laser ionization enhancement or atomic recombination lasing. A proposal to improve thermionic converter performance using laser radiation is considered. In this proposed scheme, laser radiation impinging on a thermionic plasma enhances the ionization process thereby raising the plasma density and reducing the plasma arc-drop. A source for such radiation may possibly be a cesium recombination laser operating in a different thermionic converter. The possibility of this being an energy efficient process is discussed. (WHK)

Lawless, J.L. Jr.; Lam, S.H.

1982-02-01T23:59:59.000Z

396

Proceedings of the Chornobyl phytoremediation and biomass energy conversion workshop  

DOE Green Energy (OSTI)

Many concepts, systems, technical approaches, technologies, ideas, agreements, and disagreements were vigorously discussed during the course of the 2-day workshop. The workshop was successful in generating intensive discussions on the merits of the proposed concept that includes removal of radionuclides by plants and trees (phytoremediation) to clean up soil in the Chornobyl Exclusion Zone (CEZ), use of the resultant biomass (plants and trees) to generate electrical power, and incorporation of ash in concrete casks to be used as storage containers in a licensed repository for low-level waste. Twelve years after the Chornobyl Nuclear Power Plant (ChNPP) Unit 4 accident, which occurred on April 26, 1986, the primary 4radioactive contamination of concern is from radioactive cesium ({sup 137}Cs) and strontium ({sup 90}Sr). The {sup 137}Cs and {sup 90}Sr were widely distributed throughout the CEZ. The attendees from Ukraine, Russia, Belarus, Denmark and the US provided information, discussed and debated the following issues considerably: distribution and characteristics of radionuclides in CEZ; efficacy of using trees and plants to extract radioactive cesium (Cs) and strontium (Sr) from contaminated soil; selection of energy conversion systems and technologies; necessary infrastructure for biomass harvesting, handling, transportation, and energy conversion; radioactive ash and emission management; occupational health and safety concerns for the personnel involved in this work; and economics. The attendees concluded that the overall concept has technical and possibly economic merits. However, many issues (technical, economic, risk) remain to be resolved before a viable commercial-scale implementation could take place.

Hartley, J. [Pacific Northwest National Lab., Richland, WA (United States)] [Pacific Northwest National Lab., Richland, WA (United States); Tokarevsky, V. [State Co. for Treatment and Disposal of Mixed Hazardous Waste (Ukraine)] [State Co. for Treatment and Disposal of Mixed Hazardous Waste (Ukraine)

1998-06-01T23:59:59.000Z

397

Contribution of chemistry to energy. [Fuels from coal; solar energy storage/conversion  

DOE Green Energy (OSTI)

Chemistry has contributed in many ways to energy production and conversion in the fossil fuel era. The challenges facing chemists and chemical engineers as we look forward to the 21st Century are addressed. This paper discusses some of the means that can be employed to meet this challenge both in the near-term and long-term, particularly alternate fuels from coal and solar energy storage and conversion. A leading candidate for an energy supply medium is hydrogen; implementing this concept may well be the greatest challenge faced by chemists as we leave the age of fossil fuels and enter the era of renewable energy. (DLC)

Cox, K.E.

1978-01-01T23:59:59.000Z

398

Reversible information-energy conversions in a quantum hybrid system  

E-Print Network (OSTI)

We investigate the properties of a quantum hybrid opto-mechanical transducer in the context of information thermodynamics, and show that it provides a valuable platform to monitor information- to-energy conversions at the quantum level. An optically active emitter interacts with the electromagnetic field, that plays the role of an out-of-equilibrium heat bath. The bit of information encoded in the emitter is reversibly converted into mechanical energy stored in a nano-resonator whose displacement is measurable in time, offering direct access to the elementary work exchanged. The study of the complete thermodynamical cycle described over a full mechanical period reveals a new type of Landauer's erasure that produces, instead of costing, work. We finally show that this device can be turned into a powerful heat engine operating at Carnot efficiency.

Cyril Elouard; Maxime Richard; Alexia Auffves

2013-09-20T23:59:59.000Z

399

Thermal catalytic conversion of the used isobutyl isoprene rubber into valuable hydrocarbons  

E-Print Network (OSTI)

Jan MR, Mabood F. Catalytic conversion of waste tyres intoJ, Jan MR, Mabood F. Conversion of waste tires into liquidbest method for maximum conversion into useful product, and

Rasul Jan, M.; Jabeen, Farah; Shah, Jasmin; Mabood, Fazal

2010-01-01T23:59:59.000Z

400

Solar applications of thermal energy storage. Final report  

DOE Green Energy (OSTI)

A technology assessment is presented on solar energy systems which use thermal energy storage. The study includes characterization of the current state-of-the-art of thermal energy storage, an assessment of the energy storage needs of solar energy systems, and the synthesis of this information into preliminary design criteria which would form the basis for detailed designs of thermal energy storage. (MHR)

Lee, C.; Taylor, L.; DeVries, J.; Heibein, S.

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system  

DOE Patents (OSTI)

A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength .lambda..sub.IF approximately equal to the bandgap wavelength .lambda..sub.g of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5.lambda..sub.IF to .lambda..sub.IF and reflect from .lambda..sub.IF to about 2.lambda..sub.IF ; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5.lambda..sub.IF.

Brown, Edward J. (Clifton Park, NY); Baldasaro, Paul F. (Clifton Park, NY); Dziendziel, Randolph J. (Middlegrove, NY)

1997-01-01T23:59:59.000Z

402

Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system  

DOE Patents (OSTI)

A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}.

Brown, E.J.; Baldasaro, P.F.; Dziendziel, R.J.

1996-12-31T23:59:59.000Z

403

Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system  

DOE Patents (OSTI)

A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}. 10 figs.

Brown, E.J.; Baldasaro, P.F.; Dziendziel, R.J.

1997-12-23T23:59:59.000Z

404

Thermochemical seasonal energy storage for solar thermal power  

DOE Green Energy (OSTI)

During the many years that thermochemical energy storage has been under investigation, the concept has been plagued with two persistent problems: high capital cost and poor efficiency. Literally hundreds of chemical reactions have also been carried out. For short-term storage, thermochemical systems suffer in comparison with highly efficient sensible storage media such as molten salts. Long-term storage, on the other hand, is not cost-competitive with systems employing fossil backup power. Thermochemical storage will play a significant role in solar thermal electric conversion only under highly select circumstances. The portion of electric demand served by solar plants must be sufficiently high that the balance of the grid cannot fully supplant seasonal storage. High fossil fuel costs must preclude the use of gas turbines for backup power. Significant breakthroughs in the development of one or more chemical reaction systems must occur. Ingeniously integrated systems must be employed to enhance the efficiency and cost-effectiveness of thermochemical storage. A promising integration scheme discussed herein consists of using sensible storage for diurnal cycling in parallel with thermochemical seasonal storage. Under the most favorable circumstances, thermochemical storage can be expected to play a small but perhaps vital role in supplying baseload energy from solar thermal electric conversion plants.

Barnhart, J.S.

1984-01-01T23:59:59.000Z

405

Case Study on Thermal Energy Storage: Gemasolar  

Science Conference Proceedings (OSTI)

The 19.9-MW Gemasolar plant is the first commercial concentrating-solar thermal power plant to use a central receiver tower and a two-tank molten-salt thermal energy storage system. The initial plant operation has demonstrated the feasibility of the technology to operate under commercial conditions at utility scale and verified continuous 24-hour operation. The storage capacity makes the plant output dispatchable and improves the plants capacity factor and profitability. This white paper ...

2012-10-23T23:59:59.000Z

406

Cost-Effective Solar Thermal Energy Storage: Thermal Energy Storage With Supercritical Fluids  

Science Conference Proceedings (OSTI)

Broad Funding Opportunity Announcement Project: UCLA and JPL are creating cost-effective storage systems for solar thermal energy using new materials and designs. A major drawback to the widespread use of solar thermal energy is its inability to cost-effectively supply electric power at night. State-of-the-art energy storage for solar thermal power plants uses molten salt to help store thermal energy. Molten salt systems can be expensive and complex, which is not attractive from a long-term investment standpoint. UCLA and JPL are developing a supercritical fluid-based thermal energy storage system, which would be much less expensive than molten-salt-based systems. The teams design also uses a smaller, modular, single-tank design that is more reliable and scalable for large-scale storage applications.

None

2011-02-01T23:59:59.000Z

407

Semi-flexible bimetal-based thermal energy harvesters  

E-Print Network (OSTI)

This paper introduces a new semi-flexible device able to turn thermal gradients into electricity by using a curved bimetal coupled to an electret-based converter. In fact, a two-steps conversion is carried out: (i) a curved bimetal turns the thermal gradient into a mechanical oscillation that is then (ii) converted into electricity thanks to an electrostatic converter using electrets in Teflon (r). The semi-flexible and low cost design of these new energy converters pave the way to mass production over large areas of thermal energy harvesters. Raw output powers up to 13.46uW per device were reached on a hot source at 60{\\deg}C and forced convection. Then, a DC-to-DC flyback converter has been sized to turn the energy harvesters' raw output powers into a viable supply source for an electronic circuit (DC-3V). At the end, 10uW of directly usable output power were reached with 3 devices, which is compatible with Wireless Sensor Networks powering applications. Please cite as : S Boisseau et al 2013 Smart Mater. S...

Boisseau, S; Monfray, S; Puscasu, O; Skotnicki, T; 10.1088/0964-1726/22/2/025021

2013-01-01T23:59:59.000Z

408

Building Energy Software Tools Directory: Thermal Comfort  

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

Thermal Comfort Thermal Comfort logo. Provides a user-friendly interface for calculating thermal comfort parameters and making thermal comfort predictions using several thermal...

409

Biochemical Conversion Pilot Plant (Fact Sheet), NREL (National Renewable Energy Laboratory)  

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

Biochemical Conversion Biochemical Conversion Pilot Plant A pilot-scale conversion plant for researchers, industry partners, and stakeholders to test a variety of biochemical conversion processes and technologies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. In the biochemical conversion pilot plant, NREL's engineers and scientists focus on all aspects of the efficiency and cost reduction of biochemical conversion processes. Our capabilities accommodate research from bench-scale to pilot-scale (up to one ton per day). NREL's biochemical conversion pilot plant is located in the Integrated Biorefinery Research Facility (IBRF). Photo by Dennis Schroeder, NREL/PIX 20248

410

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion  

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

Hydrogen and Fuel Cell Materials Hydrogen and Fuel Cell Materials * Members * Contact * Publications * Overview * Alternative Electrocatalysts * Electrocatalyst Durability * Hydrogen Storage * Electrocatalyst Degradation Catalysis & Energy Conversion Home Hydrogen and Fuel Cell Materials Polymer electrolyte fuel cell (PEFC) systems are promising alternatives to conventional power systems for transportation, portable, and stationary applications due to their high efficiency of converting fuel to electricity, low emissions, and low operating temperatures. Three major issues for PEFC systems, especially for portable and transportation use, are cost, lifetime, and fuel storage, with the fuel of choice being hydrogen. Argonne's Hydrogen and Fuel Cell Materials group has active research projects in these three areas, to enable the use of this promising technology in a variety of applications.

411

Land-use implications of wind-energy-conversion systems  

DOE Green Energy (OSTI)

An estimated 20 utilities in the United States are now investigating potential wind machine sites in their areas. Identifying sites for wind machine clusters (wind farms) involves more than just finding a location with a suitable wind resource. Consideration must also be given to the proximity of sites to existing transmission lines, environmental impacts, aesthetics, and legal concerns as well as the availability of and alternative uses for the land. These issues have made it increasingly difficult for utilities to bring conventional power plants on-line quickly. Utilities are now required, however, to give careful consideration to specific legal, social, and environmental questions raised by the siting of wind energy conversion systems (WECS).

Noun, R.J.

1981-02-01T23:59:59.000Z

412

Siting handbook for small wind energy conversion systems  

DOE Green Energy (OSTI)

This handbook was written to serve as a siting guide for individuals wishing to install small wind energy conversion systems (WECS); that is, machines having a rated capacity of less than 100 kilowatts. It incorporates half a century of siting experience gained by WECS owners and manufacturers, as well as recently developed siting techniques. The user needs no technical background in meteorology or engineering to understand and apply the siting principles discussed; he needs only a knowledge of basic arithmetic and the ability to understand simple graphs and tables. By properly using the siting techniques, an owner can select a site that will yield the most power at the least installation cost, the least maintenance cost, and the least risk of damage or accidental injury.

Wegley, H.L.; Ramsdell, J.V.; Orgill, M.M.; Drake, R.L.

1980-03-01T23:59:59.000Z

413

Photochemical energy conversion by membrane-bound photoredox systems  

DOE Green Energy (OSTI)

Most of our effort during the past grant period has been directed towards investigating electron transfer processes involving redox proteins at lipid bilayer/aqueous interfaces. This theme, as was noted in our previous three year renewal proposal, is consistent with our goal of developing biomimetic solar energy conversion systems which utilize the unique properties of biological electron transfer molecules. Thus, small redox proteins such as cytochrome c, plastocyanin and ferredoxin function is biological photosynthesis as mediators of electron flow between the photochemical systems localized in the membrane, and more complex soluble or membrane-bound redox proteins which are designed to carry out specific biological tasks such as transbilayer proton gradient formation, dinitrogen fixation, ATP synthesis, dihydrogen synthesis, generation of strong reductants, etc. In these studies, we have utilized two principal experimental techniques, laser flash photolysis and cyclic voltammetry, both of which permit direct measurements of electron transfer processes.

Tollin, G.

1992-03-01T23:59:59.000Z

414

WATER CONSUMPTION OF ENERGY RESOURCE EXTRACTION, PROCESSING, AND CONVERSION  

E-Print Network (OSTI)

A review of the literature for estimates of water intensity of energyresource extraction, processing to fuels, and conversion to electricity

Erik Mielke; Laura Diaz Anadon; Venkatesh Narayanamurti; Erik Mielke; Laura Diaz Anadon; Venkatesh Narayanamurti

2010-01-01T23:59:59.000Z

415

M13 bacteriophage-enabled assembly of nanocomposites : synthesis and application in energy conversion devices  

E-Print Network (OSTI)

Lack of energy supply and non-uniform distribution of traditional energy sources, such as coal, oil, and natural gas, have brought up tremendous social issues. To solve these issues, highly efficient energy conversion ...

Dang, Xiangnan

2013-01-01T23:59:59.000Z

416

LiH thermal energy storage device  

DOE Patents (OSTI)

A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures. 5 figures.

Olszewski, M.; Morris, D.G.

1994-06-28T23:59:59.000Z

417

Phase Diagram Studies on Thermal Energy Storage Materials - tris ...  

Science Conference Proceedings (OSTI)

These two thermal energy storage materials (organic crystalline materials) undergo a solid-solid phase transition before melting which will store the thermal ...

418

AC conductivity of nanoporous metal-oxide photoanodes for solar energy conversion  

E-Print Network (OSTI)

AC conductivity of nanoporous metal-oxide photoanodes for solar energy conversion Steven J. Konezny and SnO2 play a central role in solar energy conversion applications.1­7 In fact, the discovery of low-cost high-efficiency dye-sensitized solar cells (DSSCs) (i.e., exceeding 10% solar-to-electric energy

419

Modeling and controller design of a wind energy conversion system with matrix converter  

Science Conference Proceedings (OSTI)

In order to meet increasing power demand, taking into account economical and environmental factors, wind energy conversion is gradually gaining interest as a suitable source of renewable energy. In this paper, The modeling of the Wind Energy Conversion ... Keywords: FCC, PWM, SPVM, WECS, induction generator, matrix converter CSCF, power control, variable speed, wind turbine

Y. S. Rao; A. J. laxmi; K. M. S. N. Krishna

2011-02-01T23:59:59.000Z

420

Sliding Mode Power Control of Variable Speed Wind Energy Conversion Systems  

E-Print Network (OSTI)

Sliding Mode Power Control of Variable Speed Wind Energy Conversion Systems B. Beltran, T. Ahmed power generation in variable speed wind energy conversion systems (VS-WECS). These systems have two (National Renewable Energy Laboratory) wind turbine simulator FAST (Fatigue, Aerodynamics, Structures

Brest, Université de

Note: This page contains sample records for the topic "thermal energy conversion" 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

Transmission and Conversion of Energy by Coupled Soft Gears  

E-Print Network (OSTI)

Dynamical aspects of coupled deformable gears are investigated to clarify the differences of mechanical properties between the machines consist of hard materials and those of soft materials. In particular, the performances of two functions, the transmission and the conversion of the energy, are compared between the hard and soft gears systems. First, the responses of the coupled gears against a constant torque working on one of gears are focused for two types of couplings; P) a pair gears are coupled, and T) three gears are coupled with forming a regular triangle. In systems with the coupling P), we obtain trivial results that the rotational energy can be transmitted to other gear only if these gears are hard enough. On the other hand, in systems with the coupling T), the transmission of the rotational energy to one of the other gears appears only if these gears are soft enough. Second, we show the responses of this system in which one of gears have contact with a high temperature heat bath and the other gears have contact with a 0 temperature heat bath. With the coupling T), the directional rotations appear in two gears having contact with 0 temperature heat bath. Here, the direction of these rotations change depending on the noise strength.

Akinori Awazu

2005-03-14T23:59:59.000Z

422

Characterization and Modeling of Electrochemical Energy Conversion Systems by Impedance Techniques.  

E-Print Network (OSTI)

??This thesis introduces (i) amendments to basic electrochemical measurement techniques in the time and frequency domain suitable for electrochemical energy conversion systems like fuel cells (more)

Klotz, Dino

2012-01-01T23:59:59.000Z

423

Dynamic average-value modeling of doubly-fed induction generator wind energy conversion systems.  

E-Print Network (OSTI)

??In a Doubly-fed Induction Generator (DFIG) wind energy conversion system, the rotor of a wound rotor induction generator is connected to the grid via a (more)

Shahab, Azin

2013-01-01T23:59:59.000Z

424

Aquifer thermal energy storage. International symposium: Proceedings  

DOE Green Energy (OSTI)

Aquifers have been used to store large quantities of thermal energy to supply process cooling, space cooling, space heating, and ventilation air preheating, and can be used with or without heat pumps. Aquifers are used as energy sinks and sources when supply and demand for energy do not coincide. Aquifer thermal energy storage may be used on a short-term or long-term basis; as the sole source of energy or as a partial storage; at a temperature useful for direct application or needing upgrade. The sources of energy used for aquifer storage are ambient air, usually cold winter air; waste or by-product energy; and renewable energy such as solar. The present technical, financial and environmental status of ATES is promising. Numerous projects are operating and under development in several countries. These projects are listed and results from Canada and elsewhere are used to illustrate the present status of ATES. Technical obstacles have been addressed and have largely been overcome. Cold storage in aquifers can be seen as a standard design option in the near future as it presently is in some countries. The cost-effectiveness of aquifer thermal energy storage is based on the capital cost avoidance of conventional chilling equipment and energy savings. ATES is one of many developments in energy efficient building technology and its success depends on relating it to important building market and environmental trends. This paper attempts to provide guidance for the future implementation of ATES. Individual projects have been processed separately for entry onto the Department of Energy databases.

NONE

1995-05-01T23:59:59.000Z

425

NRG Thermal LLC | Open Energy Information  

Open Energy Info (EERE)

Thermal LLC Thermal LLC Jump to: navigation, search Name NRG Thermal LLC Place Minneapolis, Minnesota Zip 55402-2200 Product A subsidiary of NRG Energy that specialises in district energy systems and CHP plants. Coordinates 44.979035°, -93.264929° 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":44.979035,"lon":-93.264929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

426

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

industrial users. Costs and per kWh increased from to 2.7rf-30, 1978, the average cost per kWh was 6.09i for residential

Sands, M. D.

2011-01-01T23:59:59.000Z

427

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

District (Hawaii) Electrical Power Grid--Hawaii . . . . . .Electrical Power Grid--Puerto Rico . . . . Ammonia andocean water to produce electrical power by means of gas or

Sands, M. D.

2011-01-01T23:59:59.000Z

428

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

cable contractors, tropical cyclones and geology. Dept. ofpressure center. Tropical cyclones are usually accompaniedor plankton. case of 'TROPICAL CYCLONE TUNICATES TURBIDITY

Sands, M. D.

2011-01-01T23:59:59.000Z

429

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

distur- bances due to carbon dioxide releases and sea-how- ever, the carbon dioxide releases from large- scalewith other man-induced carbon dioxide releases to result in

Sands, M.Dale

2013-01-01T23:59:59.000Z

430

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

Degradation Processes for Chlorine in Saline Waters .92-101. Fate and effects of chlorine Bogdanov, D.V. , V.A.control alternatives to chlorine for power plant cooling

Sands, M. D.

2011-01-01T23:59:59.000Z

431

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

and commercialization and a DOE requirement for the SAR. TheDOE Operations (SAR), established the uniform requirement todocument requirements and updating schedule of the SAR (DOE,

Sands, M. D.

2011-01-01T23:59:59.000Z

432

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

proposed or existing oil or gas exploration areas, site-useOTEC Liability - Gas and oil exploration and exploitation onor natural gas; however, some oil exploration is beginning,

Sands, M. D.

2011-01-01T23:59:59.000Z

433

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

System Tube-in-She11 Heat Exchanger . . . . . . . . .possible Plate-Type Heat Exchanger Estimated Relationship~res isolation of the heat and exchanger module, purging of

Sands, M. D.

2011-01-01T23:59:59.000Z

434

Ocean thermal energy conversion (OTEC) power system development. Conceptual design  

DOE Green Energy (OSTI)

The conceptual design of a power system for application to the OTEC 100-MWe Demonstration Plant is presented. System modeling, design, and performance are described in detail. Materials considerations, module assembly, and cost considerations are discussed. Appendices include: A) systems analysis, B) general arrangements, C) system equipment, D) ammonia system material considerations; E) ammonia cycle, F) auxiliary subsystems, G) DACS availability analysis, H) heat exchanger supporting data, I) rotating machinery, and J) platform influences. (WHK)

Not Available

1978-01-30T23:59:59.000Z

435

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

SciTech Connect

This programmatic environmental analysis is an initial assessment of OTEC technology considering development, demonstration and commercialization; it is concluded that the OTEC development program should continue because the development, demonstration, and commercialization on a single-plant deployment basis should not present significant environmental impacts. However, several areas within the OTEC program require further investigation in order to assess the potential for environmental impacts from OTEC operation, particularly in large-scale deployments and in defining alternatives to closed-cycle biofouling control: (1) Larger-scale deployments of OTEC clusters or parks require further investigations in order to assess optimal platform siting distances necessary to minimize adverse environmental impacts. (2) The deployment and operation of the preoperational platform (OTEC-1) and future demonstration platforms must be carefully monitored to refine environmental assessment predictions, and to provide design modifications which may mitigate or reduce environmental impacts for larger-scale operations. These platforms will provide a valuable opportunity to fully evaluate the intake and discharge configurations, biofouling control methods, and both short-term and long-term environmental effects associated with platform operations. (3) Successful development of OTEC technology to use the maximal resource capabilities and to minimize environmental effects will require a concerted environmental management program, encompassing many different disciplines and environmental specialties.

Sands, M. D.

1980-01-01T23:59:59.000Z

436

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

by means of gas or steam turbines. temperature The minimalby means of gas or steam turbines. The minimal operationalproblems. present steam turbine hardware by a factor of 11

Sands, M. D.

2011-01-01T23:59:59.000Z

437

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

in size, and will produce baseload systems primarily land-and intended power use (baseload electricity or at-seathe ultimate use of providing baseload products, ammonia and

Sands, M. D.

2011-01-01T23:59:59.000Z

438

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

and intended power use (baseload electri- city or at-seaship), and power usages (baseload electricity, ammonia andship con- ~lguratlons. For baseload power production, the

Sands, M.Dale

2013-01-01T23:59:59.000Z

439

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

fauna associated with offshore platforms 1n the northeasternrisks and safety of offshore drilling platforms. ation andPlatform Effects Attraction - Fish congregate around offshore

Sands, M. D.

2011-01-01T23:59:59.000Z

440

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

Electrical Power Grid--Puerto Rico . . . . Ammonia andin the coastal waters of Puerto Rico. Unpublished. HarborAuthority, San Juan, Puerto Rico. Markel, A.L. VA. Personal

Sands, M. D.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

D. L. 1979. A review of water intake screening options forcapacity of cooling water intake structures for minimizingvessels. a. Warm and Cold Water Intakes Volumes - A single

Sands, M. D.

2011-01-01T23:59:59.000Z

442

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

power station on northeastern Long Island Sound, USA. Marinepower cycle will entrain and impinge members of the marinesuch as a power plant. A species of marine plankton

Sands, M. D.

2011-01-01T23:59:59.000Z

443

"Fundamental Challenges in Solar Energy Conversion" workshop hosted by  

Office of Science (SC) Website

Fundamental Challenges in Solar Energy Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC Events DOE Announcements Publications Contact BES Home 06.02.10 "Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Print Text Size: A A A Subscribe FeedbackShare Page July 7, 2010 :: The Light-Material Interactions in Energy Conversion EFRC at the California Institute of Technology will host a one day "Fundamental Challenges in Solar Energy Conversion" workshop for faculty, staff, postdoctoral, and graduate researchers from EFRCs focused on solar energy conversion. More information can be found here .pdf file (553KB

444

Hybrid photovoltaic/thermal solar energy system  

DOE Green Energy (OSTI)

Heating and cooling systems that use hybrid solar energy collectors (combination photovoltaic-thermal) have the potential for considerable energy savings, particularly when the system includes a heat pump. Economic evaluations show that photovoltaic systems are potentially most economical, but results depend critically on future collector costs as well as energy prices. Results are based on a specially developed computer program that predicted the total auxiliary energy required for five different solar heating/cooling systems. Performance calculations for a modeled residence and small office building were made using meteorological data from four geographic locations. Annual system costs were also calculated.

Kern, E.C. Jr.; Russell, M.C.

1978-03-27T23:59:59.000Z

445

Peak Load Shifting by Thermal Energy Storage  

Science Conference Proceedings (OSTI)

This technical update from the Electric Power Research Institute (EPRI) reviews the technology of storing energy in hot water and explores the potential for implementing this form of thermal energy storagethrough means of smart electric water heatersas a way to shift peak load on the electric grid. The report presents conceptual background, discusses strategies for peak load shifting and demand response, documents a series of laboratory tests conducted on a representative model of smart water heater, and...

2011-12-14T23:59:59.000Z

446

Phase change thermal energy storage material  

DOE Patents (OSTI)

A thermal energy storge composition is disclosed. The composition comprises a non-chloride hydrate having a phase change transition temperature in the range of 70.degree.-95.degree. F. and a latent heat of transformation of at least about 35 calories/gram.

Benson, David K. (Golden, CO); Burrows, Richard W. (Conifer, CO)

1987-01-01T23:59:59.000Z

447

Modeling the Q-cycle mechanism of transmembrane energy conversion  

E-Print Network (OSTI)

The Q-cycle mechanism plays an important role in the conversion of the redox energy into the energy of the proton electrochemical gradient across the biomembrane. The bifurcated electron transfer reaction, which is built into this mechanism, recycles one electron, thus, allowing to translocate two protons per one electron moving to the high-potential redox chain. We study a kinetic model of the Q-cycle mechanism in an artificial system which mimics the bf complex of plants and cyanobacteria in the regime of ferredoxin-dependent cyclic electron flow. Using methods of condensed matter physics, we derive a set of master equations and describe a time sequence of electron and proton transfer reactions in the complex. We find energetic conditions when the bifurcation of the electron pathways at the positive side of the membrane occurs naturally, without any additional gates. For reasonable parameter values, we show that this system is able to translocate more than 1.8 protons, on average, per one electron, with a thermodynamic efficiency of the order of 32% or higher.

Anatoly Yu. Smirnov; Franco Nori

2011-06-29T23:59:59.000Z

448

Modeling the Q-cycle mechanism of transmembrane energy conversion  

E-Print Network (OSTI)

The Q-cycle mechanism plays an important role in the conversion of the redox energy into the energy of the proton electrochemical gradient across the biomembrane. The bifurcated electron transfer reaction, which is built into this mechanism, recycles one electron, thus, allowing to translocate two protons per one electron moving to the high-potential redox chain. We study a kinetic model of the Q-cycle mechanism in an artificial system which mimics the bf complex of plants and cyanobacteria in the regime of ferredoxin-dependent cyclic electron flow. Using methods of condensed matter physics, we derive a set of master equations and describe a time sequence of electron and proton transfer reactions in the complex. We find energetic conditions when the bifurcation of the electron pathways at the positive side of the membrane occurs naturally, without any additional gates. For reasonable parameter values, we show that this system is able to translocate more than 1.8 protons, on average, per one electron, with a t...

Smirnov, Anatoly Yu

2011-01-01T23:59:59.000Z

449

The Role of Thermal Energy Storage in Industrial Energy Conservation  

E-Print Network (OSTI)

Thermal Energy Storage for Industrial Applications is a major thrust of the Department of Energy's Thermal Energy Storage Program. Utilizing Thermal Energy Storage (TES) with process or reject heat recovery systems has been shown to be extremely beneficial for several applications. Recent system studies resulting from contracts awarded by the Department of Energy (DOE) have identified four especially; significant industries where TES appears attractive - food processing, paper and pulp, iron and steel, and cement. Potential annual fuel savings with large scale implementation of near term TES systems for these industries is over 9 x 106 bbl of oil. This savings is due to recuperation and storage in the food processing industry, direct fuel substitution in the paper and pulp industry and reduction in electric utility peak fuel use through in-plant production of electricity from utilization of reject heat in the steel and cement industries.

Duscha, R. A.; Masica, W. J.

1979-01-01T23:59:59.000Z

450

Thermal-hydraulic calculations for the conversion to LEU of a research reactor core  

SciTech Connect

The thermal-hydraulic analysis performed for the needs of the conversion of the open pool 5MW Greek Research Reactor (GRR-1) to a pure Low Enrichment (LEU) configuration is presented. The methodology was based on a complete set of neutronic calculations performed for the new core configuration, in compliance with pre-defined Operation Limiting Conditions. The hottest channel analysis approach was adopted, and peaking factors were used to account for fabrication or measuring uncertainties. Calculations were carried out using the numerical codes NATCON, PLTEMP and PARET provided by Argonne National Laboratory (ANL). Two main different classes of conditions were considered, namely i) steady state normal operating conditions and ii) transient cases related to accidental events including reactivity feedback effects. For steady state operating conditions the behaviour of the new configuration was examined both for forced and natural convection cooling modes. Transient calculations considered several initiating events including reactivity insertion accidents (slow or fast reactivity insertion) and total or partial loss-of-flow accidents, i.e. in accordance to guidelines provided by the IAEA for research Reactors. (author)

Grigoriadis, D. [National Center for Scientific Research 'DEMOKRITOS', 153 10 Aghia Paraskevi (Greece); Department of Mechanical and Manufacturing Engineering, University of Cyprus, P.O. Box 20537, Nicosia 1678 (Cyprus); Varvayanni, M.; Catsaros, N.; Stakakis, E. [National Center for Scientific Research 'DEMOKRITOS', 153 10 Aghia Paraskevi (Greece)

2008-07-15T23:59:59.000Z

451

Effect of biomass feedstock chemical and physical properties on energy conversion processes: Volume 1, Overview  

DOE Green Energy (OSTI)

Pacific Northwest Laboratory has completed an initial investigation of the effects of physical and chemical properties of biomass feedstocks relative to their performance in biomass energy conversion systems. Both biochemical conversion routes (anaerobic digestion and ethanol fermentation) and thermochemical routes (combustion, pyrolysis, and gasification) were included in the study. Related processes including chemical and physical pretreatment to improve digestibility, and size and density modification processes such as milling and pelletizing were also examined. This overview report provides background and discussion of feedstock and conversion relationships, along with recommendations for future research. The recommendations include (1) coordinate production and conversion research programs; (2) quantify the relationship between feedstock properties and conversion priorities; (3) develop a common framework for evaluating and characterizing biomass feedstocks; (4) include conversion effects as part of the criteria for selecting feedstock breeding programs; and (5) continue emphasis on multiple feedstock/conversion options for biomass energy systems. 9 refs., 3 figs., 2 tabs.

Butner, R.S.; Elliott, D.C.; Sealock, L.J. Jr.; Pyne, J.W.

1988-12-01T23:59:59.000Z

452

Solar energy perspectives for public power  

DOE Green Energy (OSTI)

Perspectives on the utilization of solar energy for electricity production and thermal energy utilization by the public are briefly discussed. Wind energy conversion, biomass conversion, solar thermal, OTEC, photovoltaics, and solar heating and cooling are discussed. (WHK)

Woodley, N. H.

1979-06-01T23:59:59.000Z

453

Power conversion effectiveness and generation | Open Energy Informatio...  

Open Energy Info (EERE)

Linked Data Page Edit History Share this page on Facebook icon Twitter icon Power conversion effectiveness and generation Jump to: navigation, search Retrieved from...

454

Photovoltaic effect in InSe Application to Solar Energy Conversion  

E-Print Network (OSTI)

253 Photovoltaic effect in InSe Application to Solar Energy Conversion A. Segura, J. P. Guesdon, J are reported. Photovoltaic spectra are fitted with measured values oftransport and optical parameters. InSe is shown to be a new material with attractive characteristics for solar energy conversion. Performance

Paris-Sud XI, Université de

455

Author's personal copy Maximizing the solar to H2 energy conversion efficiency  

E-Print Network (OSTI)

Author's personal copy Maximizing the solar to H2 energy conversion efficiency of outdoor, Cockrell School of Engineering, The University of Texas at Austin ­ Austin, TX 78712, USA b Mechanical t A numerical study is presented aiming to maximize the solar to hydrogen energy conversion efficiency

Pilon, Laurent

456

Reliability analysis of fault tolerant wind energy conversion system with doubly fed induction generator  

Science Conference Proceedings (OSTI)

This paper deals with the design of a reliable fault tolerant converter topology for grid connected Wind Energy Conversion System (WECS) with Double Fed Induction Generator (DFIG) based on functional redundancy. The main contribution of the developed ... Keywords: Markov chain model, fault tolerant system, reliability analysis, wind energy conversion system

Philippe Weber; Florent Becker; Antoine Mathias; Didier Theilliol; Youmin M. Zhang

2012-10-01T23:59:59.000Z

457

Overview of biomass thermochemical conversion activities funded by the biomass energy systems branch of DOE  

DOE Green Energy (OSTI)

The US Department of Energy (DOE) is actively involved in the development of renewable energy sources through research and development programs sponsored by the Biomass Energy Systems Branch. The overall objective of the thermochemical conversion element of the Biomass Energy Systems Program is to develop competitive processes for the conversion of renewable biomass resources into clean fuels and chemical feedstocks which can supplement fuels from conventional sources. An overview of biomass thermochemical conversion projects sponsored by the Biomass Energy Systems Branch is presented in this paper.

Schiefelbein, G.F.; Sealock, L.J. Jr.; Ergun, S.

1979-01-01T23:59:59.000Z

458

Definition: Multispectral Thermal Infrared | Open Energy Information  

Open Energy Info (EERE)

Infrared Infrared Jump to: navigation, search Dictionary.png Multispectral Thermal Infrared This wavelength range senses heat energy from the Earth's surface. It can be used to sense surface temperature, including anomalies associated with active geothermal or volcanic systems. Both multispectral and hyperspectral remote sensing observations are available. This range can also be used to map mineralogy associate with common rock-forming silicates.[1][2] View on Wikipedia Wikipedia Definition References ↑ http://en.wikipedia.org/wiki/Thermal_infrared_spectroscopy ↑ http://asterweb.jpl.nasa.gov/ Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Multispectral_Thermal_Infrared&oldid=601561

459

NREL: TroughNet - Parabolic Trough Thermal Energy Storage Technology  

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

Thermal Energy Storage Technology One advantage of parabolic trough power plants is their potential for storing solar thermal energy to use during non-solar periods and to dispatch...

460

Estimation of wind characteristics at potential wind energy conversion sites  

DOE Green Energy (OSTI)

A practical method has been developed and applied to the problem of determining wind characteristics at candidate wind energy conversion sites where there are no available historical data. The method uses a mass consistent wind flow model (called COMPLEX) to interpolate between stations where wind data are available. The COMPLEX model incorporates the effects of terrain features and airflow. The key to the practical application of COMPLEX to the derivation of wind statistics is the model's linearity. This allows the input data sets to be resolved into orthogonal components along the set of eigenvectors of the covariance matrix. The solution for each eigenvector is determined with COMPLEX; the hourly interpolated winds are then formed from linear combinations of these solutions. The procedure requires: acquisition and merger of wind data from three to five stations, application of COMPLEX to each of the seven to 11 (depending on the number of stations for which wind data are available) eigenvectors, reconstruction of the hourly interpolated winds at the site from the eigenvector solutions, and finally, estimating the wind characteristics from the simulated hourly values. The report describes the methodology and the underlying theory. Possible improvements to the procedure are also discussed.

Not Available

1979-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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

Estimation of wind characteristics at potential wind energy conversion sites  

SciTech Connect

A practical method has been developed and applied to the problem of determining wind characteristics at candidate wind energy conversion sites where there are no available historical data. The method uses a mass consistent wind flow model (called COMPLEX) to interpolate between stations where wind data are available. The COMPLEX model incorporates the effects of terrain features and airflow. The key to the practical application of COMPLEX to the derivation of wind statistics is the model's linearity. This allows the input data sets to be resolved into orthogonal components along the set of eigenvectors of the covariance matrix. The solution for each eigenvector is determined with COMPLEX; the hourly interpolated winds are then formed from linear combinations of these solutions. The procedure requires: acquisition and merger of wind data from three to five stations, application of COMPLEX to each of the seven to 11 (depending on the number of stations for which wind data are available) eigenvectors, reconstruction of the hourly interpolated winds at the site from the eigenvector solutions, and finally, estimating the wind characteristics from the simulated hourly values. The report describes the methodology and the underlying theory. Possible improvements to the procedure are also discussed.

1979-10-01T23:59:59.000Z

462

Efficiency evaluation of oxygen enrichment in energy conversion processes  

SciTech Connect

The extent to which energy conversion efficiencies can be increased by using oxygen or oxygen-enriched air for combustion was studied. Combustion of most fuels with oxygen instead of air was found to have five advantages: increases combustion temperature and efficiency, improves heat transfer at high temperatures, reduces nitrous oxide emissions, permits a high ration of exhaust gas recirculation and allows combustion of certain materials not combustible in air. The same advantages, although to a lesser degree, are apparent with oxygen-enriched air. The cost-effectiveness of the process must necessarily be improved by about 10% when using oxygen instead of air before such use could become justifiable on purely economic terms. Although such a modest increase appears to be attainable in real situations, this study ascertained that it is not possible to generally assess the economic gains. Rather, each case requires its own evaluation. For certain processes industry has already proven that the use of oxygen leads to more efficient plant operation. Several ideas for essentially new applications are described. Specifically, when oxygen is used with exhaust gas recirculation in external or internal combustion engines. It appears also that the advantages of pulse combustion can be amplified further if oxygen is used. When burning wet fuels with oxygen, direct steam generation becomes possible. Oxygen combustion could also improve processes for in situ gasification of coals, oil shales, peats, and other wet fuels. Enhanced oil recovery by fire flooding methods might also become more effective if oxygen is used. The cold energy contained in liquid oxygen can be substantially recovered in the low end of certain thermodynamic cycles. Further efforts to develop certain schemes for using oxygen for combustion appear to be justified from both the technical and economic viewpoints.

Bomelburg, H.J.

1983-12-01T23:59:59.000Z

463

THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS  

E-Print Network (OSTI)

Mathematical Modeling of Thermal Energy Storage in Aquifers.of Aquifer Thermal Energy Storage Workshop, LawrenceF.P. "Thermal Energy Storage in a Confined Aquifer- Second

Tsang, C.F.

2013-01-01T23:59:59.000Z

464

AQUIFER THERMAL ENERGY STORAGE. A NUMERICAL SIMULATION OF AUBURN UNIVERSITY FIELD EXPERIMENTS  

E-Print Network (OSTI)

University Thermal Energy Storage , LBL No. 10194. Edwards,modeling of thermal energy storage in aquifers, ProceedingsAquifer Thermal Energy Storage Programs (in preparation).

Tsang, Chin Fu

2013-01-01T23:59:59.000Z

465

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

Energy Efficiency, Thermal Comfort with Air MotionEnergy Efficiency, Thermal Comfort with Air Motion No-fan 2Energy Efficiency, Thermal Comfort with Air Motion

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

466

SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979  

E-Print Network (OSTI)

Aspects of Aquifer Thermal Energy Storage." Lawrencethe Auburn University Thermal Energy Storage Experiment."LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~

Tsang, Chin Fu

2013-01-01T23:59:59.000Z

467

THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS  

E-Print Network (OSTI)

Mathematical Modeling of Thermal Energy Storage in Aquifers.Proceedings of Aquifer Thermal Energy Storage Workshop,within the Seasonal Thermal Energy Storage program managed

Tsang, C.F.

2013-01-01T23:59:59.000Z

468

Oxide Multilayer Thermal Radiation Energy Reflection EBCs: Effect ...  

Science Conference Proceedings (OSTI)

Environmental barrier coatings (EBCs) with thermal radiation energy reflection have been developed recently. The EBCs utilize interaction between...

469

Solar Thermal Energy Storage Device: Hybrid Nanostructures for High-Energy-Density Solar Thermal Fuels  

SciTech Connect

HEATS Project: MIT is developing a thermal energy storage device that captures energy from the sun; this energy can be stored and released at a later time when it is needed most. Within the device, the absorption of sunlight causes the solar thermal fuels photoactive molecules to change shape, which allows energy to be stored within their chemical bonds. A trigger is applied to release the stored energy as heat, where it can be converted into electricity or used directly as heat. The molecules would then revert to their original shape, and can be recharged using sunlight to begin the process anew. MITs technology would be 100% renewable, rechargeable like a battery, and emissions-free. Devices using these solar thermal fuelscalled Hybrisolcan also be used without a grid infrastructure for applications such as de-icing, heating, cooking, and water purification.

None

2012-01-09T23:59:59.000Z

470

Aquifer thermal energy storage: a survey  

DOE Green Energy (OSTI)

The disparity between energy production and demand in many power plants has led to increased research on the long-term, large-scale storage of thermal energy in aquifers. Field experiments have been conducted in Switzerland, France, the United States, Japan, and the People's Republic of China to study various technical aspects of aquifer storage of both hot and cold water. Furthermore, feasibility studies now in progress include technical, economic, and environmental analyses, regional exploration to locate favorable storage sites, and evaluation and design of pilot plants. Several theoretical and modeling studies are also under way. Among the topics being studied using numerical models are fluid and heat flow, dispersion, land subsidence or uplift, the efficiency of different injection/withdrawal schemes, buoyancy tilting, numerical dispersion, the use of compensation wells to counter regional flow, steam injection, and storage in narrow glacial deposits of high permeability. Experiments to date illustrate the need for further research and development to ensure successful implementation of an aquifer storage system. Some of the areas identified for further research include shape and location of the hydrodynamic and thermal fronts, choice of appropriate aquifers, thermal dispersion, possibility of land subsidence or uplift, thermal pollution, water chemistry, wellbore plugging and heat exchange efficiency, and control of corrosion.

Tsang, C.F.; Hopkins, D.; Hellstroem, G.

1980-01-01T23:59:59.000Z

471

Energy Efficient Proactive Thermal Management in Memory Subsystem  

E-Print Network (OSTI)

Energy Efficient Proactive Thermal Management in Memory Subsystem Raid Ayoub rayoub management of memory subsystem is challenging due to performance and thermal constraints. Big energy gains appreciable energy savings in memory sub-system and mini- mize thermal problems. We adopt the consolidation

Simunic, Tajana

472

February 20, 1991 Thermalization of high Energy Particles in a  

E-Print Network (OSTI)

revised February 20, 1991 Thermalization of high Energy Particles in a Cold Gas K.T. Waldeer and H to be answered are as to the thermalization time, the temporal evolution of the energy spectra of the gas T . We ask for the thermalization time and the temporal evolution of the energy spectra. We

Waldeer, Thomas

473

Sustainable Energy Science and Engineering Center EML 4930/EML 5930 Sustainable Energy Conversion  

E-Print Network (OSTI)

-thermal systems 7. Hydrogen production 8. Energy storage 9. Hydrogen handling & safety 10. Hydrogen use - fuel for distributed applications. The use of photovoltaics, electrolytic hydrogen production and storage, fuel cells cells 11. Hydrogen based transportation 12. Socio-economic assessment of solar-hydrogen energy supply

Krothapalli, Anjaneyulu

474

Summary of State-of-the-Art Power Conversion Systems for Energy Storage Applications  

DOE Green Energy (OSTI)

The power conversion system (PCS) is a vital part of many energy storage systems. It serves as the interface between the storage device, an energy source, and an AC load. This report summarizes the results of an extensive study of state-of-the-art power conversion systems used for energy storage applications. The purpose of the study was to investigate the potential for cost reduction and performance improvement in these power conversion systems and to provide recommendations for fiture research and development. This report provides an overview of PCS technology, a description of several state-of-the-art power conversion systems and how they are used in specific applications, a summary of four basic configurations for l:he power conversion systems used in energy storage applications, a discussion of PCS costs and potential cost reductions, a summary of the stancku-ds and codes relevant to the technology, and recommendations for future research and development.

Atcitty, S.; Gray-Fenner, A.; Ranade, S.

1998-09-01T23:59:59.000Z

475

ME 599-001: Fundamentals of Energy Conversion Professor Angela Violi  

E-Print Network (OSTI)

ME 599-001: Fundamentals of Energy Conversion Professor Angela Violi Department of Mechanical: This class is a journey on energy. The goal is to provide information and analysis tools on the development of energy technology, energy resources and energy technologies available today. After an overview

Violi, Angel

476

Mechanical and Thermal Energy Transport in Biological and ...  

Science Conference Proceedings (OSTI)

A series of studies will be presented, including energy transport in carbon ... performance for applications in thermal management and energy harvesting.

477

Methane Gas Conversion Property Tax Exemption | Department of Energy  

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

Methane Gas Conversion Property Tax Exemption Methane Gas Conversion Property Tax Exemption Methane Gas Conversion Property Tax Exemption < Back Eligibility Agricultural Commercial Industrial Residential Savings Category Bioenergy Program Info Start Date 01/01/2008 (retroactive) State Iowa Program Type Property Tax Incentive Rebate Amount 100% exemption for 10 years Provider Iowa Economic Development Authority '''''Note: This exemption is only available to facilities operated in connection or conjunction with a publicly-owned sanitary landfill. The exemption was available to other entities only for systems placed in service by December 31, 2012. Systems in place before this date are eligible to receive the property tax exemption for 10 years.''''' Under Iowa's methane gas conversion property tax exemption, real and

478

Recovery Act: Carbon Dioxide Conversion to Fuels and Energy  

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

would have been evaluated for suitability as a pyrolysis feedstock using benchmark-scale pyrolysis tests. The conversion of the residual biomass to bio-oil and char would then...

479

Maximizing Thermal Efficiency and Optimizing Energy Management (Fact Sheet)  

DOE Green Energy (OSTI)

Researchers at the Thermal Test Facility (TTF) on the campus of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado, are addressing maximizing thermal efficiency and optimizing energy management through analysis of efficient heating, ventilating, and air conditioning (HVAC) strategies, automated home energy management (AHEM), and energy storage systems.

Not Available

2012-03-01T23:59:59.000Z

480

Maximizing Thermal Efficiency and Optimizing Energy Management (Fact Sheet)  

SciTech Connect

Researchers at the Thermal Test Facility (TTF) on the campus of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado, are addressing maximizing thermal efficiency and optimizing energy management through analysis of efficient heating, ventilating, and air conditioning (HVAC) strategies, automated home energy management (AHEM), and energy storage systems.

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "thermal energy conversion" 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: Power Technologies Energy Data Book - Chapter 12. Conversion...  

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

Databook Home More Search Options Search Site Map Featured Links Biomass Energy Data Book Buildings Energy Data Book Hydrogen Energy Data Book Transportation Energy Data Book...

482

Solar-MHD energy conversion system. [tower focus collector with closed-cycle MHD generator  

SciTech Connect

A solar energy conversion system includes a centrally positioned tower supporting a solar receiver, and an array of pivotally mounted reflectors disposed circumferentially therearound which reflect earth incident solar radiation onto the receiver which thermally excites and photo-ionizes a working fluid to form a plasma. The plasma is accelerated and further heated through a ceramic turbo-compressor into a magnetohydrodynamic (MHD) generator to produce direct current. The working fluid is then passed through a heat exchanger channel where the waste heat is removed by another working fluid which drives a vapor turbine connected to the ceramic turbo-compressor and an AC generator. Seed may then be removed and the working fluid is recycled in the closed cycle MHD system. The electrical power is distributed, part of it being used to electrolyze water into hydrogen and oxygen which are stored and allowed to exothermally recombine to drive the system during low solar radiation intervals. In a further embodiment the MHD working fluid receives its velocity from an external turbo-compressor drivem by the second working fluid, and an alternative thermal and photo-ionization chamber is employed. 16 claims, 10 figures.

Rathbun, K.R.

1978-06-13T23:59:59.000Z

483

Biomass conversion Task 4 1988 program of work: International Energy Agency Bioenergy Agreement  

DOE Green Energy (OSTI)

For biomass to meet its potential as an energy resource, conversion processes must be available which are both efficient and environmentally acceptable. Conversion can include direct production of heat and electricity as well as production of intermediate gaseous, liquid, and solid fuels. While many biomass conversion processes are commercially available at present, others are still in the conceptual stage. Additional research and development activities on these advanced concepts will be necessary to fully use biomass resources. Ongoing research on biomass conversion processes is being conducted by many nations throughout the world. In an effort to coordinate this research and improve information exchange, several countries have agreed to a cooperative effort through the International Energy Agency's Bioenergy Agreement (IEA/BA). Under this Agreement, Task IV deals specifically with biomass conversion topics. The cooperative activities consists of information exchange and coordination of national research programs on specific topics. The activities address biomass conversion in a systematic manner, dealing with the pretreatment of biomass prior to conversion, the subsequent conversion of the biomass to intermediate fuels or end-product energy, and then the environmental aspects of the conversion process. This document provides an outline of cooperative work to be performed in 1988. 1 fig., 2 tabs.

Stevens, D.J.

1987-12-01T23:59:59.000Z

484

Biomass conversion Task 4 1988 program of work: International Energy Agency Bioenergy Agreement  

SciTech Connect

For biomass to meet its potential as an energy resource, conversion processes must be available which are both efficient and environmentally acceptable. Conversion can include direct production of heat and electricity as well as production of intermediate gaseous, liquid, and solid fuels. While many biomass conversion processes are commercially available at present, others are still in the conceptual stage. Additional research and development activities on these advanced concepts will be necessary to fully use biomass resources. Ongoing research on biomass conversion processes is being conducted by many nations throughout the world. In an effort to coordinate this research and improve information exchange, several countries have agreed to a cooperative effort through the International Energy Agency's Bioenergy Agreement (IEA/BA). Under this Agreement, Task IV deals specifically with biomass conversion topics. The cooperative activities consists of information exchange and coordination of national research programs on specific topics. The activities address biomass conversion in a systematic manner, dealing with the pretreatment of biomass prior to conversion, the subsequent conversion of the biomass to intermediate fuels or end-product energy, and then the environmental aspects of the conversion process. This document provides an outline of cooperative work to be performed in 1988. 1 fig., 2 tabs.

Stevens, D.J.

1987-12-01T23:59:59.000Z

485

Solid State Energy Conversion Alliance (SECA) Solid Oxide Fuel Cell Program  

DOE Green Energy (OSTI)

This report summarizes the work performed for Phase I (October 2001 - August 2006) under Cooperative Agreement DE-FC26-01NT41245 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled 'Solid State Energy Conversion Alliance (SECA) Solid Oxide Fuel Cell Program'. The program focuses on the development of a low-cost, high-performance 3-to-10-kW solid oxide fuel cell (SOFC) system suitable for a broad spectrum of power-generation applications. During Phase I of the program significant progress has been made in the area of SOFC technology. A high-efficiency low-cost system was designed and supporting technology developed such as fuel processing, controls, thermal management, and power electronics. Phase I culminated in the successful demonstration of a prototype system that achieved a peak efficiency of 41%, a high-volume cost of $724/kW, a peak power of 5.4 kW, and a degradation rate of 1.8% per 500 hours. . An improved prototype system was designed, assembled, and delivered to DOE/NETL at the end of the program. This prototype achieved an extraordinary peak efficiency of 49.6%.

Nguyen Minh

2006-07-31T23:59:59.000Z

486

Explorations of Novel Energy Conversion and Storage Systems  

E-Print Network (OSTI)

alternative energy sources. Hydrogen has been investigated to become a major component of world energy solutions

Duffin, Andrew Mark

2010-01-01T23:59:59.000Z

487

Biomass Conversion Task IV 1987 program of work: International Energy Agency Bioenergy Agreement  

DOE Green Energy (OSTI)

Biomass is a major, renewable energy resource through out the world, and extensive research is being conducted by many countries on bioenergy technologies. In an effort to improve communications and cooperation in the area of biomass energy, several nations have agreed to a cooperative program of work under the International Energy Agency's Bioenergy Agreement (IEA/BA). Three areas of major importance have been identified including Short Rotation Forestry, Conventional Forestry, and Biomass Conversion. This document describes the 1987 Program of Work for cooperative activities in the area of Biomass Conversion. The background of the cooperation and descriptions of specific conversion projects are presented. Details of activity funding are also provided. 3 tabs.

Stevens, D.J.

1986-12-01T23:59:59.000Z

488

Efficient energy conversion from laser to proton beam in a laser-foil interaction  

Science Conference Proceedings (OSTI)

Demonstrated is a remarkable improvement on the energy conversion efficiency from laser to protons in a laser-foil interaction by particle simulations. The total laser-proton energy conversion efficiency becomes 16.7%, although a conventional plane foil target serves a rather low efficiency. In our previous study we found that Al multihole thin-foil target was efficient for the energy conversion from laser to protons [Y. Nodera and S. Kawata, Phys. Rev. E 78, 046401 (2008)], and the energy conversion efficiency was 9.3%. In our 2.5-dimensional particle-in-cell simulations the Al multihole structure is also employed, and the parameters of the Al multihole wing width and length are optimized in the paper. The present results clarify the roles of the target Al hole width and depth in the laser-proton energy conversion. The main physical reason for the enhancement of the conversion efficiency is a reduction of the laser reflection at the target surface area. The optimized multihole foil target provides a remarkable increase in the laser-proton energy conversion efficiency as shown above.

Takahashi, K.; Kawata, S.; Satoh, D.; Barada, D. [Graduate School of Engineering, Utsunomiya University, 7-1-2 Yohtoh, 321-8585 Utsunomiya (Japan); Ma, Y. Y. [Graduate School of Engineering, Utsunomiya University, 7-1-2 Yohtoh, 321-8585 Utsunomiya (Japan); Department of Physics, College of Science, National University of Defense Technology, 410073 Changsha (China); Kong, Q.; Wang, P. X. [Institute of Modern Physics, Fudan University, 200433 Shanghai (China)

2010-09-15T23:59:59.000Z