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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
to obtain the most current and comprehensive results.


1

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

2

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

Nanoporous Thermal-to-Electrical Energy Conversion System (of Wasted Energy : Thermal to Electrical Energy Conversion AArticles: 1. “ Thermal to electrical energy conversion” , Yu

Lim, Hyuck

2011-01-01T23:59:59.000Z

3

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network [OSTI]

1980. Ocean Thermal Energy Conversion Draft ProgrammaticPlan. Ocean Thermal Energy Conversion. U.S. DOE Assistantl OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTAL ASSESSMENT

Sands, M.Dale

2013-01-01T23:59:59.000Z

4

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

of ocean thermal energy conversion technology. U.S. DOE.ocean thermal energy conversion. A preliminary engineeringCompany. Ocean thermal energy conversion mission analysis

Sands, M. D.

2011-01-01T23:59:59.000Z

5

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

Commercial ocean thermal energy conversion (OTEC) plants byFifth Ocean Thermal Energy Conversion Conference, February1980. Ocean thermal energy conversion (OTEC) pilot plant

Sullivan, S.M.

2014-01-01T23:59:59.000Z

6

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

Commercial ocean thermal energy conversion ( OTEC) plants byfield of ocean thermal energy conversion discharges. I~. L.Sixth Ocean Thermal Energy conversion Conference. June 19-

Sullivan, S.M.

2014-01-01T23:59:59.000Z

7

Ocean Thermal Energy Conversion LUIS A. VEGA  

E-Print Network [OSTI]

Ocean Thermal Energy Conversion LUIS A. VEGA Hawaii Natural Energy Institute, School of Ocean depths of 20 m (surface water) and 1,000 m. OTEC Ocean Thermal Energy Conversion, the process Energy Conversion. At first, OTEC plantships providing electricity, via submarine power cables, to shore

8

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

9

Evaluation of Thermal to Electrical Energy Conversion of High...  

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

Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Evaluation of Thermal to Electrical Energy Conversion of High Temperature...

10

Ocean Thermal Energy Conversion Mostly about USA  

E-Print Network [OSTI]

Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega or other energy carriers to be delivered to shore... 13luisvega@hawaii.edu #12;US Federal Government OTEC period estimated at 3 to 4 years. #12;luisvega@hawaii.edu 20 Energy Carriers · OTEC energy could

11

Ocean Thermal Energy Conversion Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

12

Ocean Thermal Energy Conversion Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

13

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

E-Print Network [OSTI]

Assessment, Ocean Thermal Energy Conversion (OTEC) ProgramOcean Thermal Energy Conversion (OTEC), U.S. Department offor Ocean Thermal Energy Conversion (OTEC) plants. Argonne,

Sullivan, S.M.

2013-01-01T23:59:59.000Z

14

2007 Survey of Energy Resources World Energy Council 2007 Ocean Thermal Energy Conversion COUNTRY NOTES  

E-Print Network [OSTI]

2007 Survey of Energy Resources World Energy Council 2007 Ocean Thermal Energy Conversion 573 and personal communication. Valuable inputs were provided by Don Lennard of Ocean Thermal Energy Conversion in the technology. #12;2007 Survey of Energy Resources World Energy Council 2007 Ocean Thermal Energy Conversion 574

15

Energy Conversion and Thermal Efficiency Sales Tax Exemption | Department  

Broader source: Energy.gov (indexed) [DOE]

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

16

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

of an open cycle ocean thermal difference power plant. M.S.screens for ocean thermal energy conversion power plants.1958. Ocean cooling water system for 800 MW power station.

Sands, M. D.

2011-01-01T23:59:59.000Z

17

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

heat source can be solar thermal energy, biological thermaland concentrated solar thermal energy farms. They demandsources include solar thermal energy, geo-thermal energy,

Lim, Hyuck

2011-01-01T23:59:59.000Z

18

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

screens for ocean thermal energy conversion power plants.cold deep-ocean waters to produce electric power via eitherOffice of Solar Power Applications. Division of Ocean Energy

Sullivan, S.M.

2014-01-01T23:59:59.000Z

19

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

solar radiation, and the geothermal energy. [16] Fig. 1.1.thermal energy, geothermal energy, wasted heat from athermal energy, geothermal energy, ocean thermal energy,

Lim, Hyuck

2011-01-01T23:59:59.000Z

20

Thermal power plant efficiency enhancement with Ocean Thermal Energy Conversion  

Science Journals Connector (OSTI)

Abstract In addition to greenhouse gas emissions, coastal thermal power plants would gain further opposition due to their heat rejection distressing the local ecosystem. Therefore, these plants need to enhance their thermal efficiency while reducing their environmental offense. In this study, a hybrid plant based on the principle of Ocean Thermal Energy Conversion was coupled to a 740 MW coal-fired power plant project located at latitude 28°S where the surface to deepwater temperature difference would not suffice for regular OTEC plants. This paper presents the thermodynamical model to assess the overall efficiency gained by adopting an ammonia Rankine cycle plus a desalinating unit, heated by the power plant condenser discharge and refrigerated by cold deep seawater. The simulation allowed us to optimize a system that would finally enhance the plant power output by 25–37 MW, depending on the season, without added emissions while reducing dramatically the water temperature at discharge and also desalinating up to 5.8 million tons per year. The supplemental equipment was sized and the specific emissions reduction was estimated. We believe that this approach would improve the acceptability of thermal and nuclear power plant projects regardless of the plant location.

Rodrigo Soto; Julio Vergara

2014-01-01T23:59:59.000Z

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

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

power plants, solar thermal energy, geothermal energy, oceanpower plants, distributed solar thermal energy, geo/ocean-power plants [59]. Other LGH sources include solar thermal energy, geo-thermal energy, ocean

Lim, Hyuck

2011-01-01T23:59:59.000Z

22

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

density, making direct thermal energy storage methods, e.g.reduced. Conventional thermal energy harvesting and storageharvesting, storage, and utilization of thermal energy has

Lim, Hyuck

2011-01-01T23:59:59.000Z

23

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

screens for ocean thermal energy conversion power plants.cold deep-ocean waters to produce electric power via eitherpower from the temperature differential between warm surface and cold deep-ocean

Sullivan, S.M.

2014-01-01T23:59:59.000Z

24

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

biological thermal energy, geothermal energy, wasted heatpower plants, solar thermal energy, geothermal energy, oceansolar radiation, and the geothermal energy. [16] Fig. 1.1.

Lim, Hyuck

2011-01-01T23:59:59.000Z

25

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

CALIFORNIA, SAN DIEGO Recycling of Wasted Energy : ThermalOF THE DISSERTATION Recycling of Wasted Energy : Thermal to

Lim, Hyuck

2011-01-01T23:59:59.000Z

26

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

Other LGH sources include solar thermal energy, geo-thermalThe heat source can be solar thermal energy, biologicalsources include the coolants in coal and nuclear power plants, solar thermal energy,

Lim, Hyuck

2011-01-01T23:59:59.000Z

27

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

E-Print Network [OSTI]

Thermal Sciences The thermal sciences area involves the study of energy conversion and transmission in virtually all energy conversion devices and systems. One may think of the jet engine as a mechanical device, power generation, the flow of liquids and gases, and the transfer of thermal energy (heat) by means

New Hampshire, University of

28

Portfolio Manager Technical Reference: Thermal Conversion Factors | ENERGY  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

29

Thermal energy conversion to motive power  

SciTech Connect (OSTI)

Performance evaluations of both ideal and actual organic Rankine cycle (ORC) and steam Rankine cycles (SRC) are presented for systems that may be candidates for Solar Total Energy Systems (STES). Many organic fluids and heat engines (turbines or expanders) are being developed; therefore, performance of a few representative ORCs are evaluated. The electrical power outputs range from several kW to <10 MW with maximum cycle temperatures of 482/sup 0/C (900 F). Conclusions from basic Rankine cycle analyses are that the Carnot cycle concept should not be used as a standard of comparison for different cycle fluids, even when they are operating at the same inlet and exhaust temperatures. The ideal Rankine cycle with the maximum conversion efficiency, when based on exact physical properties of fluids, should provide a better standard for actual cycles. Three sets of maximum (ideal) Rankine cycle efficiency (n/sub r/) curves are estimated for steam and several organic fluids for exhaust temperatures of 38/sup 0/C, 100/sup 0/C, and 149/sup 0/C (100 F, 212 F, and 300F). These curves of n/sub r/ versus peak temperature at the expander inlet are referred to as Criterion Curves for basic Rankine cycles, in which corresponding inlet pressures are selected such that n/sub r/ will be a maximum. Basic cycle efficiencies indicate some fluids preferred for solar total energy applications.

Meador, J.T.

1980-01-01T23:59:59.000Z

30

Thermodynamic Optimization in Ocean Thermal Energy Conversion  

Science Journals Connector (OSTI)

As alternative energy sources to oil and uranium, we can consider well known alternative sources such as solar power, geothermal power and wind power. However when we consider the 21st century energy sources, ocean

Y. Ikegami; H. Uehara

1999-01-01T23:59:59.000Z

31

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 Water Temperature Delta 2 A New Clean Renewable 24/7 Energy Source #12;Ocean Thermal Energy Conversion and Commercial Applications 1 Dr. Ted Johnson Director of Alternative Energy Programs Development Lockheed Martin

32

FRONTIERS ARTICLE Fundamentals of energy transport, energy conversion, and thermal properties  

E-Print Network [OSTI]

FRONTIERS ARTICLE Fundamentals of energy transport, energy conversion, and thermal properties, thermoelectrics, and photovoltaics. However, energy transport and conversion, at the organic­inorganic interface and as an energy conversion technology. Aviram and Ratner's revolutionary suggestion that molecules could behave

Malen, Jonathan A.

33

Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center (S3TEC ) Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center (S3TEC )...

34

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 REPORTto potential Ocean Thermal Energy Conversion (OTEC) sites inOcean Thermal Energy Conversion (OTEC) Sites: Puerto Rico,

Commins, M.L.

2010-01-01T23:59:59.000Z

35

Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

Research Center of the DOE Office of Basic Energy Sciences SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER Progress from DOE EFRC: Solid-State Solar-Thermal Energy...

36

Assessment of Microbial Fouling in an Ocean Thermal Energy Conversion Experiment  

Science Journals Connector (OSTI)

...Press Inc., New York. 14. Hirshman...Ocean Thermal Energy Conversion...Press Inc., New York. 24. Mathis...Ocean thermal energy: the biggest...Department of Energy, part II. U...Pergamon Press, New York. 28. Perrigo...

R. Paul Aftring; Barrie F. Taylor

1979-10-01T23:59:59.000Z

37

Assessment of Microbial Fouling in an Ocean Thermal Energy Conversion Experiment  

Science Journals Connector (OSTI)

...Proceedings of the Ocean Thermal Energy Conversion...Claude, G. 1930. Power from the tropical seas...Metz, W. D. 1977. Ocean thermal energy: the biggest gamble in solar power. Science 198:178-180...studies, p. 1-53. In Ocean Thermal Energy Conversion...

R. Paul Aftring; Barrie F. Taylor

1979-10-01T23:59:59.000Z

38

Research Program - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

We investigate the molecular and structural origins of energy conversion (absorption, carrier generation and recombination processes, transport) phenomena in organic and hybrid...

39

Research Program - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

In the Inorganic PV thrust, we develop nanostructured materials architectures for solar energy conversion by engineering absorption and transport properties not available in the...

40

Science Highlights- Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 - Abstracts and Highlight Slides Efficiency of Thermoelectric Energy Conversion in Biphenyl-dithiol Junctions: Effect of Electron-Phonon Interactions Plasmonic Backscattering...

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

Research Program - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

thrust of CSTEC focuses on fundamental transport processes that govern solid state energy conversion, i.e., how the charge and energy flow through the atomic lattice or an...

42

Energy Down-Conversion and Thermalization in Metal Absorbers  

Science Journals Connector (OSTI)

There are the two significant factors associated with down-conversion phonons. The first is the dependence of the energy loss on the distance of the absorption ... from the escape interface. A photon of energy E....

A. Kozorezov

2012-05-01T23:59:59.000Z

43

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-Sud 11, 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France. Thermophotovoltaic devices are energy-conversion , IR sensing and spectroscopy11,12 and has paved the way to a new generation of NTPV energy-conversion

Paris-Sud XI, Université de

44

Assessment of Microbial Fouling in an Ocean Thermal Energy Conversion Experiment  

Science Journals Connector (OSTI)

...publication 23 July 1979 A project to investigate biofouling...to ocean thermal energy conversion heat exchangers...in ocean thermal energy conversion heat exchangers...for man to harvest solar energy involves exploitation...exchanger units. The project was conducted from...

R. Paul Aftring; Barrie F. Taylor

1979-10-01T23:59:59.000Z

45

Economics of Ocean Thermal Energy Conversion Luis A. Vega, Ph.D.  

E-Print Network [OSTI]

Economics of Ocean Thermal Energy Conversion (OTEC) by Luis A. Vega, Ph.D. Published and 100 MW Plants 15 Co-Products of OTEC 16 OTEC Energy Carriers 19 Externalities in the Production Thermal Energy Conversion (OTEC) Luis A. Vega, Ph.D.1, 2 Abstract A straightforward analytical model

46

Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center (S3TEC)  

Broader source: Energy.gov [DOE]

Introduction to the solid-state solar-thermal energy conversion center plus discussion on phonon transport and solar thermoelectric energy conversion

47

Science Highlights- Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emission in Type-II GaSbGaAs Quantum Dots and Prospects for intermediate band solar energy conversion Angular Selective Semi-Transparent Photovoltaics Mechanisms of Nanorod...

48

Science Highlights- Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Applied Physics Letters, 97, 171908 (2010) Sb2Te3 is a key material for thermoelectric energy conversion technology. We have found that the crystal structure of Sb2Te3 thin...

49

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

total energy received by today’s solar panels and is beings best solar panels can convert only ~16% of solar energy to

Lim, Hyuck

2011-01-01T23:59:59.000Z

50

PROCESS DESIGN AND CONTROL Efficient Conversion of Thermal Energy into Hydrogen: Comparing Two Methods  

E-Print Network [OSTI]

PROCESS DESIGN AND CONTROL Efficient Conversion of Thermal Energy into Hydrogen: Comparing Two. The performance of energy conversion processes can be evaluated using several types of efficiencies.2 Nowadays Gross,*, Ad Verkooijen, and Signe Kjelstrup, Department of Process & Energy, Delft Uni

Kjelstrup, Signe

51

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

E-Print Network [OSTI]

clean and efficient energy conversion in power systems," inSteam Power Plant," in Energy conversion, YG Goswami and Fazeotropic mixture energy conversion," Energy Conversion and

Ho, Tony

2012-01-01T23:59:59.000Z

52

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters  

Broader source: Energy.gov [DOE]

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters

53

Conversion of Concentrated Solar Thermal Energy into Chemical Energy  

Science Journals Connector (OSTI)

When a concentrated solar beam is irradiated to the ceramics such as Ni-ferrite, the high-energy flux in the range of 1500–2500 kW/m2 is absorbed by an excess Frenkel defect formation. This non-equilibrium state ...

Yutaka Tamaura

2012-03-01T23:59:59.000Z

54

Electrodeposition and characterization of nanostructured black nickel selective absorber coatings for solar–thermal energy conversion  

Science Journals Connector (OSTI)

Selective coatings consisting of a bright nickel interlayer and black nickel overlayer for solar-to-thermal energy conversion have been electrodeposited onto stainless steel...2, NiOOH, Ni2O3..., NiO, water and m...

F. I. Lizama-Tzec; J. D. Macías…

2014-08-01T23:59:59.000Z

55

Solar Thermoelectric Energy Conversion  

Broader source: Energy.gov (indexed) [DOE]

SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER NanoEngineering Group Solar Thermoelectric Energy Conversion Gang Chen, 1 Daniel Kraemer, 1 Bed Poudel, 2 Hsien-Ping Feng, 1 J....

56

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.

François Barriquand

2005-07-26T23:59:59.000Z

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),and Applications,” Energy Conversion and Management, 45 ,and direct solar energy conversion to work. Focus should be

Coso, Dusan

2013-01-01T23:59:59.000Z

58

Potential environmental consequences of ocean thermal energy conversion (OTEC) plants. A workshop  

SciTech Connect (OSTI)

The concept of generating electrical power from the temperature difference between surface and deep ocean waters was advanced over a century ago. A pilot plant was constructed in the Caribbean during the 1920's but commercialization did not follow. The US Department of Energy (DOE) earlier planned to construct a single operational 10MWe Ocean Thermal Energy Conversion (OTEC) plant by 1986. However, Public Law P.L.-96-310, the Ocean Thermal Energy Conversion Research, Development and Demonstration Act, and P.L.-96-320, the Ocean Thermal Energy Conversion Act of 1980, now call for acceleration of the development of OTEC plants, with capacities of 100 MWe in 1986, 500 MWe in 1989, and 10,000 MWe by 1999 and provide for licensing and permitting and loan guarantees after the technology has been demonstrated.

Walsh, J.J. (ed.)

1981-05-01T23:59:59.000Z

59

Research Program - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

below. Organic and Hybrid Systems for TE Improving Thermoelectric Efficiency via Low Thermal Boundary Conductance Heat dissipation in Atomic-Scale Junctions A General Strategy to...

60

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

Mexico. Energy Research and Development Administration, Division of SolarMexico. Energy Research and Development Administration, Division of Solar

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.


61

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

Division of Central Solar Technology, U.s. Dept. of Energy.Div. of Central Solar Technology. U.S. Dept. of Energy.Division of Central Solar Technology, u.s. Dept. of Energy.

Sullivan, S.M.

2014-01-01T23:59:59.000Z

62

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

Div. of Central Solar Technology. U.S. Dept. of Energy.Division of Central Solar Technology, U.S. Dept. of Energy.Division of Central Solar Technology, U.S. Dept. of Energy.

Sullivan, S.M.

2014-01-01T23:59:59.000Z

63

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

Electricity - Hawaii is almost totally dependent upon imported petroleum A natural energy source of geothermal

Sands, M. D.

2011-01-01T23:59:59.000Z

64

Thermal Conversion Process (TCP) Technology  

Broader source: Energy.gov (indexed) [DOE]

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

65

Science Highlights- Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Modes by an Integrated Acoustic Etalon Heterobarrier for Converting Hot-Phonon Energy to Electric Potential MOCVD Growth of Vertically Aligned InGaN Nanowires Resolving...

66

Papers Published - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Heterojunction Photovoltaic Cells with Fullerene-Based Electron Filtering Buffers," Adv. Energy Mater. 4, 1301557 (2014). S. Huang, S. J. Kim, X. Q. Pan, and R. S. Goldman,...

67

Science Highlights- Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Efficiencies Approaching 100% Exciton Management in Organic Photovoltaic Multi-donor Energy Cascades Decorative Power Generating Panels Creating Various Colors Benchmarking...

68

Welcome - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

To Bridge LEDs' Green Gap, Scientists Think Small ... Really Small Read about CSTEC's latest Research Energy Transport in Organic and Hybrid Systems Absorption and Carrier...

69

Contact - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Contact Prof. Peter Green, CSTEC Director Research Group Leader for Thrust 3 - Energy transport in organic and hybrid systems Materials Science & Engineering Dept. H H Dow...

70

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

1979, Rosslyn, VA. U.S. Dept. of Energy and Argonne NationalLaboratory, Argonne, IL. ANL/OTEC- BCM-002. Bretschneider,Environmental Systems Division, Argonne National Laboratory.

Sullivan, S.M.

2014-01-01T23:59:59.000Z

71

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

Div. of Central Solar Technology. U.S. Dept. of Energy.Division of Central Solar Technology. , U.S. Dept. ofDivision of Central Solar Technology. USDOE paper 7D-3/1.

Sands, M. D.

2011-01-01T23:59:59.000Z

72

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

E-Print Network [OSTI]

for Storage of Solar Thermal Energy,” Solar Energy, 18 (3),Toward Molecular Solar-Thermal Energy Storage,” Angewandtescale molecular solar thermal energy storage system, in

Coso, Dusan

2013-01-01T23:59:59.000Z

73

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

74

On the transition from photoluminescence to thermal emission and its implication on solar energy conversion  

E-Print Network [OSTI]

Photoluminescence (PL) is a fundamental light-matter interaction, which conventionally involves the absorption of energetic photon, thermalization and the emission of a red-shifted photon. Conversely, in optical-refrigeration the absorption of low energy photon is followed by endothermic-PL of energetic photon. Both aspects were mainly studied where thermal population is far weaker than photonic excitation, obscuring the generalization of PL and thermal emissions. Here we experimentally study endothermic-PL at high temperatures. In accordance with theory, we show how PL photon rate is conserved with temperature increase, while each photon is blue shifted. Further rise in temperature leads to an abrupt transition to thermal emission where the photon rate increases sharply. We also show how endothermic-PL generates orders of magnitude more energetic photons than thermal emission at similar temperatures. Relying on these observations, we propose and theoretically study thermally enhanced PL (TEPL) for highly eff...

Manor, Assaf; Rotschild, Carmel

2014-01-01T23:59:59.000Z

75

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

E-Print Network [OSTI]

on Sustainable thermal Energy Storage Technologies, Part I:2009, “Review on Thermal Energy Storage with Phase Change2002, “Survey of Thermal Energy Storage for Parabolic Trough

Coso, Dusan

2013-01-01T23:59:59.000Z

76

Chapter 7 - Geothermal and ocean-thermal energy conversion  

Science Journals Connector (OSTI)

Publisher Summary Geothermal heat sources are utilized by means of thermodynamic engines such as Brayton cycles, in cases where the geothermal heat is in the form of steam. In some regions, geothermal sources exist that provide a mixture of water and steam, including suspended soil and rock particles, such that conventional turbines cannot be used. In most regions the geothermal resources are in the form of heat-containing rock or sediments, with little possibility of direct use. If an aquifer passes through the region, it may collect heat from the surrounding layers and allow a substantial rate of heat extraction such as by drilling two holes from the surface to the aquifer, separated from each other. If no aquifer is present to establish a heat exchange surface in the heat-containing rock, it may be feasible to create suitable fractures artificially. Downward gradients of temperature exist in most oceans, and they are particularly stable in the tropical oceans. The utilization of such temperature gradients for electricity generation such as by use of a Rankine cycle, are considered several times. The temperature differences available over the first 500-1000 m of water depth are only about 25?C. Considering a closed Rankine cycle, with a working fluid such as ammonia, which evaporates and condenses at convenient temperatures, placed near the ocean surface, it will be required to pump colder water through a pipe from the depth to a heat exchanger for condensation of the working fluid. A warm water heat exchanger is required for evaporating the working fluid. The converters must be placed in strong currents such as the Gulf Stream in order to save energy to pump the hot water through the heat exchanger.

Bent Sørensen

2007-01-01T23:59:59.000Z

77

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

E-Print Network [OSTI]

Thermal Energy Storage,” Renewable and Sustainable EnergyReview on Sustainable thermal Energy Storage Technologies,Energy Storage Using Phase Change Materials,” Renewable and Sustainable Energy

Coso, Dusan

2013-01-01T23:59:59.000Z

78

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

E-Print Network [OSTI]

S. a. , 2004, “Solar Thermal Collectors and Applications,”86] Schnatbaum L. , 2009, “Solar Thermal Power Plants,” Thefor Storage of Solar Thermal Energy,” Solar Energy, 18 (3),

Coso, Dusan

2013-01-01T23:59:59.000Z

79

Potential Impact of ZT = 4 Thermoelectric Materials on Solar Thermal Energy Conversion Technologies  

Science Journals Connector (OSTI)

Photovoltaic and solar-thermal are two conversion technologies receiving a great deal of attention. ... Solar-thermal conversion uses the full solar spectrum and generates electricity by conventional electromagnetic induction methods. ... Resource and environmental impact considerations will play an increasingly important role in reaching decisions concerning the practicality of thermoelectric power generation systems. ...

Ming Xie; Dieter M. Gruen

2010-03-02T23:59:59.000Z

80

Status of Solar Thermal Conversion in China  

Science Journals Connector (OSTI)

China has an abundant solar energy resource. Solar thermal conversion systems have been studied for more than 25 years and solar thermal industry has been developing since 1990’s....2 solar collectors were sold a...

Yin Zhiqiang

2009-01-01T23:59:59.000Z

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.


81

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

SciTech Connect (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

82

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

SciTech Connect (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 was estimated. Results obtained by elementary cycle analyses were 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 was given to other Stirling engine criteria such as durability, reliability, and serviceability. Production costs were not considered here.

Bowyer, J.M.

1984-04-01T23:59:59.000Z

83

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

E-Print Network [OSTI]

such as in solar energy and geothermal energy [183]. Solar128] V Minea, "Using Geothermal Energy and Industrial Wastesuch as solar thermal and geothermal energy will become an

Ho, Tony

2012-01-01T23:59:59.000Z

84

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

E-Print Network [OSTI]

128] V Minea, "Using Geothermal Energy and Industrial Wastesuch as solar thermal and geothermal energy will become ansolar field, and geothermal energy, where energy is obtained

Ho, Tony

2012-01-01T23:59:59.000Z

85

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

E-Print Network [OSTI]

Solar Thermal Energy Research," in Sandia National Laboratory Science and Engineering Exposition 2011, Albuquerque, New Mexico,

Ho, Tony

2012-01-01T23:59:59.000Z

86

Ocean Thermal Energy Conversion Life Cycle Cost Assessment, Final Technical Report, 30 May 2012  

SciTech Connect (OSTI)

The Ocean Thermal Energy Conversion (OTEC) Life Cycle Cost Assessment (OLCCA) is a study performed by members of the Lockheed Martin (LM) OTEC Team under funding from the Department of Energy (DOE), Award No. DE-EE0002663, dated 01/01/2010. OLCCA objectives are to estimate procurement, operations and maintenance, and overhaul costs for two types of OTEC plants: -Plants moored to the sea floor where the electricity produced by the OTEC plant is directly connected to the grid ashore via a marine power cable (Grid Connected OTEC plants) -Open-ocean grazing OTEC plant-ships producing an energy carrier that is transported to designated ports (Energy Carrier OTEC plants) Costs are developed using the concept of levelized cost of energy established by DOE for use in comparing electricity costs from various generating systems. One area of system costs that had not been developed in detail prior to this analysis was the operations and sustainment (O&S) cost for both types of OTEC plants. Procurement costs, generally referred to as capital expense and O&S costs (operations and maintenance (O&M) costs plus overhaul and replacement costs), are assessed over the 30 year operational life of the plants and an annual annuity calculated to achieve a levelized cost (constant across entire plant life). Dividing this levelized cost by the average annual energy production results in a levelized cost of electricity, or LCOE, for the OTEC plants. Technical and production efficiency enhancements that could result in a lower value of the OTEC LCOE were also explored. The thermal OTEC resource for Oahu, Hawai�¢����i and projected build out plan were developed. The estimate of the OTEC resource and LCOE values for the planned OTEC systems enable this information to be displayed as energy supplied versus levelized cost of the supplied energy; this curve is referred to as an Energy Supply Curve. The Oahu Energy Supply Curve represents initial OTEC deployment starting in 2018 and demonstrates the predicted economies of scale as technology and efficiency improvements are realized and larger more economical plants deployed. Utilizing global high resolution OTEC resource assessment from the Ocean Thermal Extractable Energy Visualization (OTEEV) project (an independent DOE project), Global Energy Supply Curves were generated for Grid Connected and Energy Carrier OTEC plants deployed in 2045 when the predicted technology and efficiencies improvements are fully realized. The Global Energy Supply Curves present the LCOE versus capacity in ascending order with the richest, lowest cost resource locations being harvested first. These curves demonstrate the vast ocean thermal resource and potential OTEC capacity that can be harvested with little change in LCOE.

Martel, Laura; Smith, Paul; Rizea, Steven; Van Ryzin, Joe; Morgan, Charles; Noland, Gary; Pavlosky, Rick; Thomas, Michael

2012-06-30T23:59:59.000Z

87

Performance analysis of an absorption power cycle for ocean thermal energy conversion  

Science Journals Connector (OSTI)

Abstract An absorption power cycle with two ejectors is proposed for ocean thermal energy conversion. The ammonia–water is used as the working fluid. The ejectors are driven by vapor and solution from the sub-generator. Based on the first and second law, the mathematical model for this cycle is developed and theoretical analysis is conducted to evaluate the effects of thermodynamic parameters on the performance of this cycle. Results show that the absorption temperature is increased by 2.0–6.5 °C by employing the two-stage ejector sub-cycle, which indicates that this proposed cycle can be driven with a lower temperature difference. Further, the thermal efficiency, net thermal efficiency and exergy efficiency of this cycle can reach to 4.17%, 3.10% and 39.92% respectively. Besides, the generation pressure, the heating source temperature, the solution concentration, and the expansion ratio, as well as the entrainment ratio of the first stage ejector have significant effects on the absorption temperature, the thermal efficiency, the exergy efficiency and the exergy loss of this cycle. In addition, 49.80% of exergy loss in this proposed cycle occurs in the generators and reheater, followed by the ejectors of 36.12%.

Han Yuan; Ning Mei; Peilin Zhou

2014-01-01T23:59:59.000Z

88

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

E-Print Network [OSTI]

temperature energy resources such as solar thermal,low temperature energy resources such as solar ponds (70 orenewable energy resources such as non-concentrated solar

Ho, Tony

2012-01-01T23:59:59.000Z

89

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

90

Efficient Conversion of Thermal Energy into Hydrogen: Comparing Two Methods to Reduce Exergy Losses in a Sulfuric Acid Decomposition Reactor  

Science Journals Connector (OSTI)

Efficient Conversion of Thermal Energy into Hydrogen: Comparing Two Methods to Reduce Exergy Losses in a Sulfuric Acid Decomposition Reactor ... The first design uses optimal control theory to obtain a more uniform distribution of the entropy production. ... This optimized design is found to perform the best, but it requires significant changes in the heating equipment in order to approximately realize the optimal temperature profiles. ...

Leen V. van der Ham; Joachim Gross; Ad Verkooijen; Signe Kjelstrup

2009-08-06T23:59:59.000Z

91

A novel thermally biased mechanical energy conversion cycle Ian M. McKinley, Sam Goljahi, Christopher S. Lynch, and Laurent Pilona)  

E-Print Network [OSTI]

organic Rankine cycles,3 and thermoelectric devices.4,5 Stirling engines and organic Rankine cyclesA novel thermally biased mechanical energy conversion cycle Ian M. McKinley, Sam Goljahi) This paper demonstrates a new power cycle for direct conversion of mechanical energy into electrical energy

Pilon, Laurent

92

Solar energy conversion.  

SciTech Connect (OSTI)

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

93

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

broad importance in many thermal conversion and efficiency applications beyond solar energy. The RG3 team is establishing fundamental principles for thermal photon harvesting...

94

An economic and environmental assessment of transporting bulk energy from a grazing ocean thermal energy conversion facility  

Science Journals Connector (OSTI)

Abstract An ocean thermal energy conversion (OTEC) facility produces electrical power without generating carbon dioxide (CO2) by using the temperature differential between the reservoir of cold water at greater depths and the shallow mixed layer on the ocean surface. As some of the best sites are located far from shore, one option is to ship a high-energy carrier by tanker from these open-ocean or “grazing” OTEC platforms. We evaluate the economics and environmental attributes of producing and transporting energy using ammonia (NH3), liquid hydrogen (LH2) and methanol (CH3OH). For each carrier, we develop transportation pathways that include onboard production, transport via tanker, onshore conversion and delivery to market. We then calculate the difference between the market price and the variable cost for generating the product using the OTEC platform without and with a price on CO2 emissions. Finally, we compare the difference in prices to the capital cost of the OTEC platform and onboard synthesis equipment. For all pathways, the variable cost is lower than the market price, although this difference is insufficient to recover the entire capital costs for a first of a kind OTEC platform. With an onboard synthesis efficiency of 75%, we recover 5%, 25% and 45% of the capital and fixed costs for LH2, CH3OH and NH3, respectively. Improving the capital costs of the OTEC platform by up to 25% and adding present estimates for the damages from CO2 do not alter these conclusions. The near-term potential for the grazing OTEC platform is limited in existing markets. In the longer term, lower capital costs combined with improvements in onboard synthesis costs and efficiency as well as increases in CO2 damages may allow the products from OTEC platforms to enter into markets.

Elisabeth A. Gilmore; Andrew Blohm; Steven Sinsabaugh

2014-01-01T23:59:59.000Z

95

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

a novel method of solar energy conversion that can lead tofundamentals of plasmonic energy conversion are reviewed in3. Plasmonic energy conversion fundamentals Surface plasmons

Clavero, Cesar

2014-01-01T23:59:59.000Z

96

Energy and exergy analyses of hydrogen production via solar-boosted ocean thermal energy conversion and PEM electrolysis  

Science Journals Connector (OSTI)

Energy and exergy analyses are reported of hydrogen production via an ocean thermal energy conversion (OTEC) system coupled with a solar-enhanced proton exchange membrane (PEM) electrolyzer. This system is composed of a turbine, an evaporator, a condenser, a pump, a solar collector and a PEM electrolyzer. Electricity is generated in the turbine, which is used by the PEM electrolyzer to produce hydrogen. A simulation program using Matlab software is developed to model the PEM electrolyzer and OTEC system. The simulation model for the PEM electrolyzer used in this study is validated with experimental data from the literature. The amount of hydrogen produced, the exergy destruction of each component and the overall system, and the exergy efficiency of the system are calculated. To better understand the effect of various parameters on system performance, a parametric analysis is carried out. The energy and exergy efficiencies of the integrated OTEC system are 3.6% and 22.7% respectively, and the exergy efficiency of the PEM electrolyzer is about 56.5% while the amount of hydrogen produced by it is 1.2 kg/h.

Pouria Ahmadi; Ibrahim Dincer; Marc A. Rosen

2013-01-01T23:59:59.000Z

97

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

SciTech Connect (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

98

Ocean Thermal Energy Conversion Primer L. A. Vega, Ph.D.  

E-Print Network [OSTI]

source and the heat sink required for a heat engine. A practical application is found in a system (heat engine) designed to transform the thermal energy into electricity. This is referred to as OTEC for Ocean seawater is flash-evaporated in a vacuum chamber. The resulting low-pressure steam is used to drive

99

Photoelectrochemical solar energy conversion  

Science Journals Connector (OSTI)

In the present paper the progress in the field of solar energy conversion for the production of electricity and storable ... critically analyzed in view of their stability and conversion efficiency. A number of factors

Rüdiger Memming

1988-01-01T23:59:59.000Z

100

Photovoltaic Energy Conversion  

E-Print Network [OSTI]

Photovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel Make solar cells more efficient Theoretical energy conversion efficiency limit of single junction-bandgap photons are not absorbed: Carrier relaxation to band edges: Photon energy exceeding bandgap is lost

Glashausser, Charles

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

Algae Harvest Energy Conversion  

Science Journals Connector (OSTI)

Resolution of many workshops on algae harvest energy conversion is that low productivity, high capital intensity ... and maintenance, respiration, and photoinhibition are few factors militating against viability ...

Yung-Tse Hung Ph.D.; P.E.; DEE; O. Sarafadeen Amuda Ph.D.…

2010-01-01T23:59:59.000Z

102

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

E-Print Network [OSTI]

Nonconventional Fluids," ASME Jour of Engineering for Power,fluids for Organic Rankine Cycles," Applied Thermal Engineering,fluid in waste heat recovery," Applied Thermal Engineering,

Ho, Tony

2012-01-01T23:59:59.000Z

103

Off-design performance analysis of a closed-cycle ocean thermal energy conversion system with solar thermal preheating and superheating  

Science Journals Connector (OSTI)

Abstract This article reports the off-design performance analysis of a closed-cycle ocean thermal energy conversion (OTEC) system when a solar thermal collector is integrated as an add-on preheater or superheater. Design-point analysis of a simple OTEC system was numerically conducted to generate a gross power of 100 kW, representing a base OTEC system. In order to improve the power output of the OTEC system, two ways of utilizing solar energy are considered in this study: (1) preheating of surface seawater to increase its input temperature to the cycle and (2) direct superheating of the working fluid before it enters a turbine. Obtained results reveal that both preheating and superheating cases increase the net power generation by 20–25% from the design-point. However, the preheating case demands immense heat load on the solar collector due to the huge thermal mass of the seawater, being less efficient thermodynamically. The superheating case increases the thermal efficiency of the system from 1.9% to around 3%, about a 60% improvement, suggesting that this should be a better approach in improving the OTEC system. This research provides thermodynamic insight on the potential advantages and challenges of adding a solar thermal collection component to OTEC power plants.

Hakan Aydin; Ho-Saeng Lee; Hyeon-Ju Kim; Seung Kyoon Shin; Keunhan Park

2014-01-01T23:59:59.000Z

104

Energy partition and conversion of solar and thermal radiation into sensible and latent heat in a greenhouse under arid conditions  

Science Journals Connector (OSTI)

For a greenhouse thermal analysis, it is essential to know the energy partition and the amount of solar and thermal radiation converted into sensible and latent heat in the greenhouse. Factors that are frequently needed are: efficiency of utilization of incident solar radiation (?), and sensible and latent heat factors (? and ?). Previous studies considered these factors as constant parameters. However, they depend on the environmental conditions inside and outside the greenhouse, plants and soil characteristics, and structure, orientation and location of the greenhouse. Moreover, these factors have not yet been evaluated under the arid climatic conditions of the Arabian Peninsula. In this study, simple energy balance equations were applied to investigate ?, ? and ?; energy partitioning among the greenhouse components; and conversion of solar and thermal radiation into sensible and latent heat. For this study, we used an evaporatively cooled, planted greenhouse with a floor area of 48 m2. The parameters required for the analysis were measured on a sunny, hot summer day. The results showed that value of ? was almost constant (?0.75); whereas the values of ? and ? strongly depended on the net radiation over the canopy (Rna); and could be represented by exponential decay functions of Rna. At a plant density corresponding to a leaf area index (LAI) of 3 and an integrated incident solar energy of 27.7 MJ m?2 d?1, the solar and thermal radiation utilized by the greenhouse components were 20.7 MJ m?2 d?1 and 3.74 MJ m?2 d?1, respectively. About 71% of the utilized radiation was converted to sensible heat and 29% was converted to latent heat absorbed by the inside air. Contributions of the floor, cover and plant surfaces on the sensible heat of the inside air were 38.6%, 48.2% and 13.2%, respectively.

I.M. Al-Helal; A.M. Abdel-Ghany

2011-01-01T23:59:59.000Z

105

Wave Energy Conversion Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

106

Direct thermal to electrical energy conversion using very low bandgap TPV cells in a gas-fired furnace system  

Science Journals Connector (OSTI)

Abstract In this paper, electricity generation using very low bandgap InGaAsSb thermophotovoltaic (TPV) cells whose bandgap is 0.53 eV was investigated in a gas-fired furnace system where thermal radiation was emitted from a metal alloy emitter. The electric output of the InGaAsSb TPV cells was characterized under various operating conditions. The cell short circuit density was measured to be 3.01 A/cm2 at an emitter temperature of 1197 °C. At this emitter temperature, an electric power density of 0.65 W/cm2 was produced by the TPV cells. Experimental results show that direct thermal to electrical energy conversion was achieved in a gas-fired heating furnace system. Such a system could be employed to form a micro-combined heat and power (micro-CHP) process where exhaust heat is utilized for home heating needs. The TPV integrated energy system provides an effective means for primary energy savings.

K. Qiu; A.C.S. Hayden

2014-01-01T23:59:59.000Z

107

Proceedings of the 31. intersociety energy conversion engineering conference. Volume 2: Conversion technologies, electro-chemical technologies, Stirling engines, thermal management  

SciTech Connect (OSTI)

The 148 papers contained in Volume 2 are arranged topically as follows -- (A) Conversion Technologies: Superconductivity applications; Advanced cycles; Heat engines; Heat pumps; Combustion and cogeneration; Advanced nuclear reactors; Fusion Power reactors; Magnetohydrodynamics; Alkali metal thermal to electric conversion; Thermoelectrics; Thermionic conversion; Thermophotovoltaics; Advances in electric machinery; and Sorption technologies; (B) Electrochemical Technologies: Terrestrial fuel cell technology; and Batteries for terrestrial power; (C) Stirling Engines: Stirling machine analysis; Stirling machine development and testing; and Stirling component analysis and testing; (D) Thermal Management: Cryogenic heat transfer; Electronic components and power systems; Environmental control systems; Heat pipes; Numeric analysis and code verification; and Two phase heat and mass transfer. Papers within the scope of the data base have been processed separately.

Chetty, P.R.K.; Jackson, W.D.; Dicks, E.B. [eds.

1996-12-31T23:59:59.000Z

108

Semiconductor Nanowires and Nanotubes for Energy Conversion  

E-Print Network [OSTI]

of applications, notably energy conversion. As researchnanowires for energy conversion. Chemical Reviews, 2010.Implications for solar energy conversion. Physical Review

Fardy, Melissa Anne

2010-01-01T23:59:59.000Z

109

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

of solar energy into electricity in photovoltaic cells orsolar energy conversion aimed at photovoltaic applicationsenergy conversion, opening a new venue for photovoltaic and

Clavero, Cesar

2014-01-01T23:59:59.000Z

110

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

of carriers allows maintaining the energy conversionenergy conversion 8 Timescale of charge separation, carrierin this energy conversion method, i.e. carrier regeneration

Clavero, Cesar

2014-01-01T23:59:59.000Z

111

Energy Conversion to Electricity  

Science Journals Connector (OSTI)

30 May 1974 research-article Energy Conversion to Electricity D. Clark...continuing growth in the demand for energy, and of electricity as the route...the electricity share of the total energy market and of the substitution of electricity...

1974-01-01T23:59:59.000Z

112

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

E-Print Network [OSTI]

and Photovoltaic Solar Energy Converters,” American ChemicalNocera D. G. , 2010, “Solar Energy Supply and Storage forof Abiotic Photo-chemical Solar Energy Storage Systems,”

Coso, Dusan

2013-01-01T23:59:59.000Z

113

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. [Nocera D. G. , 2010, “Solar Energy Supply and Storage forof Abiotic Photo-chemical Solar Energy Storage Systems,”

Coso, Dusan

2013-01-01T23:59:59.000Z

114

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

E-Print Network [OSTI]

Nocera D. G. , 2010, “Solar Energy Supply and Storage forof Abiotic Photo-chemical Solar Energy Storage Systems,”Power Plants,” Journal of Solar Energy Engineering, 124 (2),

Coso, Dusan

2013-01-01T23:59:59.000Z

115

Thermal to Electrical Energy Conversion of Skutterudite-Based Thermoelectric Modules  

Science Journals Connector (OSTI)

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 ...

James R. Salvador; Jung Y. Cho; Zuxin Ye…

2013-07-01T23:59:59.000Z

116

BIOMASS ENERGY CONVERSION IN HAWAII  

E-Print Network [OSTI]

Jones and w.s. Fong, Biomass Conversion of Biomass to Fuels11902 UC-61a BIOMASS ENERGY CONVERSION IN HAWAII RonaldLBL-11902 Biomass Energy Conversion in Hawaii Ronald 1.

Ritschard, Ronald L.

2013-01-01T23:59:59.000Z

117

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

118

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

E-Print Network [OSTI]

using solar heat source," Solar Energy, vol. 73, pp. 385-sources, part I: Theoretical investigation," Journal of Solar Energy,sources, part II: Experimental investigation," Journal of Solar Energy,

Ho, Tony

2012-01-01T23:59:59.000Z

119

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

E-Print Network [OSTI]

obstacles and satisfy the needs of load leveling, new effective technologies for long term solar energy

Coso, Dusan

2013-01-01T23:59:59.000Z

120

Session: Energy Conversion  

SciTech Connect (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

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

Solar Energy Conversion  

Science Journals Connector (OSTI)

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.

George W. Crabtree; Nathan S. Lewis

2008-01-01T23:59:59.000Z

122

Energy Conversion Devices | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name: Energy Conversion Devices Place: Rochester Hills, MI Website: http:www.energyconversiondev References: Energy Conversion Devices1...

123

Countermeasures to Microbiofouling in Simulated Ocean Thermal Energy Conversion Heat Exchangers with Surface and Deep Ocean Waters in Hawaii  

Science Journals Connector (OSTI)

...thermal energy from warm ocean waters. A small fraction...converted to electrical power and waste heat is rejected...water pumped from the ocean depth. Solar energy absorbed by the ocean surface provides the heat...Thermal losses, the power requirements to pump large...

Leslie Ralph Berger; Joyce A. Berger

1986-06-01T23:59:59.000Z

124

BIOMASS ENERGY CONVERSION IN HAWAII  

E-Print Network [OSTI]

Operations, vol. 2 of Biomass Energy (Stanford: StanfordPhotosynthethic Pathway Biomass Energy Production," ~c:_! _LBL-11902 UC-61a BIOMASS ENERGY CONVERSION IN HAWAII

Ritschard, Ronald L.

2013-01-01T23:59:59.000Z

125

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

126

Solar energy conversion apparatus  

SciTech Connect (OSTI)

Apparatus is disclosed for converting solar energy to more useful forms, I.E., thermal and electrical energy. Such apparatus includes a photoelectric transducer (E.G., an array of photovoltaic cells), means for concentrating solar energy on the transducer, and means for circulating a liquid between the transducer and the solar energy concentrator. The spectral properties of the liquid are such that the liquid functions as a bandpass filter, transmitting solar energy to which the transducer is responsive and absorbing solar energy to which the transducer is non-responsive. The transmitted solar energy is converted to electrical energy by the transducer, and the absorbed solar energy is converted to heat by the liquid. Preferably, the liquid is circulated through a container which, in the vicinity of the transducer, is constructed so as to provide optical gain to the system and to integrate incident solar energy for the purpose of eliminating ''hot spots'' which could overheat, and thereby damage, the transducer.

Powell, R.A.

1981-07-14T23:59:59.000Z

127

Ocean Thermal Energy Conversion  

Science Journals Connector (OSTI)

A pertinent question, however, is: what is the worldwide power resource that could be extracted with OTEC plants without affecting the thermohaline ocean circulation? The estimate is that the maximum steady-state...

Dr. Luis A. Vega Ph.D.

2013-01-01T23:59:59.000Z

128

Ocean Thermal Energy Conversion  

Science Journals Connector (OSTI)

A pertinent question, however, is: what is the worldwide power resource that could be extracted with OTEC plants without affecting the thermohaline ocean circulation? The estimate is that the maximum steady-state...

Dr. Luis A. Vega Ph.D.

2012-01-01T23:59:59.000Z

129

Semiconductor Nanowires and Nanotubes for Energy Conversion  

E-Print Network [OSTI]

Nanowires and Nanotubes for Energy Conversion By MelissaNanowires and Nanotubes for Energy Conversion by MelissaNanowires and Nanotubes for Energy Conversion by Melissa

Fardy, Melissa Anne

2010-01-01T23:59:59.000Z

130

Experimental and Analytical Studies on Pyroelectric Waste Heat Energy Conversion  

E-Print Network [OSTI]

energy conversion . . . . . . . . . . . . . . . . . . . . . . . . . .other pyroelectric energy conversion methods . . . . Chapter6 Pyroelectric Energy Conversion using PLZT and

Lee, Felix

2012-01-01T23:59:59.000Z

131

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

132

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

133

Thermophotovoltaic Energy Conversion for Space  

Science Journals Connector (OSTI)

Heat is converted to electricity by using a heated surface (the emitter) that radiates infrared (IR) photons to an adjacent low bandgap photovoltaic cell (typically made with binary, ternary, or quaternary semiconductors such as InGaAs, GaSb, InAs, or InGaAsSb), which converts these IR photons to electricity. ... Solid-state TPV energy conversion uses photovoltaic devices in the form of a p?n diode to convert radiant thermal photons directly into electricity. ... The overall system efficiency of a TPV system is the product of factors attributable to the TPV cell efficiency, the spectral filter, and the cell module factor which includes effects of parasitic photon absorption in the nonactive diode area and is defined as the total photonic energy absorbed in the active diode area divided by the total photonic energy absorption. ...

V. L. Teofilo; P. Choong; J. Chang; Y.-L. Tseng; S. Ermer

2008-05-22T23:59:59.000Z

134

Wind energy conversion system  

SciTech Connect (OSTI)

This patent describes a wind energy conversion system comprising: a propeller rotatable by force of wind; a generator of electricity mechanically coupled to the propeller for converting power of the wind to electric power for use by an electric load; means coupled between the generator and the electric load for varying the electric power drawn by the electric load to alter the electric loading of the generator; means for electro-optically sensing the speed of the wind at a location upwind from the propeller; and means coupled between the sensing means and the power varying means for operating the power varying means to adjust the electric load of the generator in accordance with a sensed value of wind speed to thereby obtain a desired ratio of wind speed to the speed of a tip of a blade of the propeller.

Longrigg, P.

1987-03-17T23:59:59.000Z

135

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

Basic Research Needs for Solar Energy Utilization, BasicS. Pillai and M. A. Green, Solar Energy Materials and SolarPlasmonic conversion of solar energy César Clavero Plasma

Clavero, Cesar

2014-01-01T23:59:59.000Z

136

Energy conversion by gravitational waves  

Science Journals Connector (OSTI)

... out that if such particles are charged, the accelerations will constitute a mechanism for the conversion of gravitational ... of gravitational energy into electromagnetic ...

H. BONDI; F. A. E. PIRANI

1988-03-17T23:59:59.000Z

137

Quantum Solar Energy Conversion and Application to Organic Solar Cells  

Science Journals Connector (OSTI)

When studying the limits of solar energy conversion, either by thermal or quantum processes, the sun has traditionally been treated as a blackbody (thermal equilibrium) radiator with surface temperature 5 800 ...

Gottfried H. Bauer; Peter Würfel

2003-01-01T23:59:59.000Z

138

Photovoltaic and photoelectrochemical conversion of solar energy  

Science Journals Connector (OSTI)

...multiple carrier generation...renewable energy|solar energy conversion|photovoltaic...photovoltaic energy conversion process...minority carriers in the p-type...efficiency carrier multiplication...for solar energy conversion. Phys...

2007-01-01T23:59:59.000Z

139

Sustainable systems for the storage and conversion of energy are dependent on interconnected  

E-Print Network [OSTI]

SEMTE abstract Sustainable systems for the storage and conversion of energy are dependent performance buildings, renewable energy conversion, and energy storage can be streamlined by identifying energy systems for harvesting low availability thermal energy and for providing integrated power, cooling

Reisslein, Martin

140

Encapsulation Strategies in Energy Conversion Materials  

Science Journals Connector (OSTI)

For instance, light is converted to electrical energy in photovoltaic devices and back to light in LEDs, electrical energy is converted to chemical energy and vice versa in batteries or fuel cells, light is converted to chemical energy in water splitting catalysts or related systems, or one form of chemical energy is converted to another form over various types of catalysts. ... Thermoelectric materials are an interesting class of energy conversion materials that convert thermal gradients directly to electricity. ... energy densities ranging up to a factor of 5 beyond conventional Li-ion systems. ...

Ferdi Schüth

2013-10-24T23:59:59.000Z

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.


141

AQUIFER THERMAL ENERGY STORAGE  

E-Print Network [OSTI]

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

Tsang, C.-F.

2011-01-01T23:59:59.000Z

142

Solar Energy Conversion Efficiency Project  

Science Journals Connector (OSTI)

Report of a discussion on possible collaborative experimentation to test and refine biomass production models based on the conversion of solar energy by plant stands, and to evaluate alternative models.

J. S. Pereira; J. J. Landsberg

1989-01-01T23:59:59.000Z

143

Energy Conversion, an Energy Frontier Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electricity, will become increasingly important. Indeed enhancements in efficiencies of energy conversion technologies that are readily adaptable in any environment will con-...

144

Energy Conversion, an Energy Frontier Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

most pressing problems. Indeed, our success at discovering new paradigms for efficient energy conversion, with minimal environmental impact, will largely determine humankind's...

145

Graduate School of Energy Science Outlines of Laboratories Department of ENERGY CONVERSION SCIENCE  

E-Print Network [OSTI]

Graduate School of Energy Science ­ Outlines of Laboratories Department of ENERGY CONVERSION SCIENCE 1 / 2 Group Code: H-1 Group Name: Thermal Energy Conversion Takuji ISHIYAMA, Professor; Hiroshi energy conversion systems with high efficiency and safety while protecting the environment

Takada, Shoji

146

Biomass Conversion to Energy  

Science Journals Connector (OSTI)

Sunlight is an infinitely abundant source of energy on this earth and all energy on this planet, in principle, is renewable. However, considering the factor of time frame, the present sources of energy such as co...

Maneesha Pande; Ashok N. Bhaskarwar

2012-01-01T23:59:59.000Z

147

3 Wind energy conversion  

Science Journals Connector (OSTI)

This document is part of Subvolume C 'Renewable Energy' of Volume 3 'Energy Technologies' of Landolt-Börnstein Group VIII 'Advanced Materials and Technologies'.

H.-J. Wagner

2006-01-01T23:59:59.000Z

148

Next-Generation Thermionic Solar Energy Conversion  

Broader source: Energy.gov [DOE]

This fact sheet describes a next-generation thermionic solar energy conversion project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Stanford University, seeks to demonstrate the feasibility of photon-enhanced, microfabricated thermionic energy converters as a high-efficiency topping cycle for CSP electricity generation. With the potential to double the electricity output efficiency of solar-thermal power stations, this topping cycle application can significantly reduce the cost of solar-thermal electricity below that of the lowest-cost, fossil-fuel generated electricity.

149

53119782000 Solar Energy Conversion  

E-Print Network [OSTI]

; · · 1100019000 1300 #12; · · 93 #12; · 1880 · · 1989 · #12;-1 · · #12;Solar Energy: 3 trillion barrels, 1.7 x 1022 joules = energy of the Sun supplied to Earth in 1.5 days The amount of energy humans use annually: 4.6 x 1020 joules = energy of the Sun supplied to Earth in 1 hour #12;How

Chen, Yang-Yuan

150

HELIOPHYSICS II. ENERGY CONVERSION PROCESSES  

E-Print Network [OSTI]

of a solar flare 11 2.3.1 Flare luminosity and mechanical energy 11 2.3.2 The impulsive phase (hard X with the term "solar flare" dominate our thinking about energy conversion from magnetic storage to other forms approaches to the problems involved in phys- ically characterizing the solar atmosphere; see also the lecture

Hudson, Hugh

151

WEC up! Energy Department Announces Wave Energy Conversion Prize...  

Broader source: Energy.gov (indexed) [DOE]

WEC up Energy Department Announces Wave Energy Conversion Prize Administrator WEC up Energy Department Announces Wave Energy Conversion Prize Administrator September 24, 2014 -...

152

Photovoltaic and photoelectrochemical conversion of solar energy  

Science Journals Connector (OSTI)

...photoelectrochemical conversion of solar energy Michael Gratzel * * ( michael...industry, have dominated photovoltaic solar energy converters. These systems have...promising perspectives. renewable energy|solar energy conversion|photovoltaic...

2007-01-01T23:59:59.000Z

153

Seasonal thermal energy storage  

SciTech Connect (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

154

Thermionic energy conversion plasmas  

SciTech Connect (OSTI)

In this paper the history, application options, and ideal basic performance of the thermionic energy converter are outlined. The basic plasma types associated with various modes of converter operation are described, with emphasis on identification and semi-quantitative characterization of the dominant physical processes and utility of each plasma type. The frontier plasma science issues in thermionic converter applications are briefly summarized.

Rasor, N.S. (Rasor Associates, Inc., Sunnyvale, CA (United States))

1991-12-01T23:59:59.000Z

155

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

156

Energy Conversion, an Energy Frontier Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

11 Awards ... 12 S p r I N g 2 0 1 1 Intermediate Band Solar Energy Conversion in ZnTe:O and ZnTeZnSe Affordable photovoltaic solar cells are highly...

157

Photochemical conversion and storage of solar energy  

Science Journals Connector (OSTI)

Photochemical conversion and storage of solar energy ... In this article, the author considers the use of inorganic photochemical reactions for the conversion and storage of solar energy. ... HOMO?LUMO energy difference values compared ... ...

Charles Kutal

1983-01-01T23:59:59.000Z

158

Energy Conversion Technologies 1.0 Introduction  

E-Print Network [OSTI]

1 Energy Conversion Technologies 1.0 Introduction In these notes, we describe the infrastructure. By "energy conversion," we mean the conversion of energy into some form of electric energy. By "available now that is available to be considered in the generation and planning functions. We classify this information by Energy

McCalley, James D.

159

Ocean energy conversion systems annual research report  

SciTech Connect (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

160

Norbornadiene-quadricyclane system in the photochemical conversion and storage of solar energy  

Science Journals Connector (OSTI)

Norbornadiene-quadricyclane system in the photochemical conversion and storage of solar energy ... Photoswitchable Molecular Rings for Solar-Thermal Energy Storage ... Photoswitchable Molecular Rings for Solar-Thermal Energy Storage ...

Constantine Philippopoulos; Dimitrios Economou; Constantine Economou; John Marangozis

1983-12-01T23:59:59.000Z

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

3. Energy conversion, balances, efficiency, equilibrium  

E-Print Network [OSTI]

1/124 3. Energy conversion, balances, efficiency, equilibrium (Introduction to Thermodynamics) Ron h�dm, h = u + p/ Picture: SEHB06 56/124 3.5: Energy balances; Conversion work work, work heat 96/124 Energy conversion heat work /1 "the essential rules" Picture:IO06 #12;97/124 Energy

Zevenhoven, Ron

162

Solid-State Energy Conversion Overview  

Broader source: Energy.gov (indexed) [DOE]

eere.energy.gov 1 Solid-State Energy Conversion Overview John W. Fairbanks Department of Energy Vehicle Technologies Annual Merit Review June 11, 2010 Vehicle Technologies Program...

163

Quantum-coupled single-electron thermal to electric conversion scheme  

E-Print Network [OSTI]

Thermal to electric energy conversion with thermophotovoltaics relies on radiation emitted by a hot body, which limits the power per unit area to that of a blackbody. Microgap thermophotovoltaics take advantage of evanescent ...

Wu, D. M.

164

Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

Electricity & Solar Thermal HW Module Electricity Solar thermal space heating Baseline Solar Thermal Inverte r To Grid 2012 GMZ Energy, Proprietary and Confidential Bosch -...

165

Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion  

E-Print Network [OSTI]

cost and improve the energy conversion efficiency, to enableefficiency solar energy conversion devices. AcknowledgementsPhotoelectrochemical Energy Conversion Neil P. Dasgupta and

Dasgupta, Neil

2014-01-01T23:59:59.000Z

166

Explorations of Novel Energy Conversion and Storage Systems  

E-Print Network [OSTI]

of Steady-State Energy Conversion. Applied ScientificElectrokinetic energy conversion efficiency in nanofluidicElectrokinetic energy conversion efficiency in nanofluidic

Duffin, Andrew Mark

2010-01-01T23:59:59.000Z

167

Solar Energy, Its Conversion and Utilization  

Science Journals Connector (OSTI)

The basis of the discussions is the University of Florida Solar Energy and Energy Conversion Laboratory with its Solar House and its Solar-Electric Car.

Erich A. Farber

1974-01-01T23:59:59.000Z

168

"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...

169

"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...

170

Conversion Plan | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

document the conversion plan that clearly defines the system or project's conversion procedures; outlines the installation of new and converted filesdatabases; coordinates the...

171

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conversion efficiency for non-tracking converters must be reasonably independent of light incidence angle. To improve energy conversion efficiency with photonic design and...

172

Dynamical mechanism for the conversion of energy at a molecular scale Naoko Nakagawa  

E-Print Network [OSTI]

Dynamical mechanism for the conversion of energy at a molecular scale Naoko Nakagawa Department mechanism of a molecular machine for energy conversion, by considering a simple model describing is thermal ratchet 4­7 , which gives one plausible mechanism for the conversion of energy to mechanical work

Kaneko, Kunihiko

173

HEATS: Thermal Energy Storage  

SciTech Connect (OSTI)

HEATS Project: The 15 projects that make up ARPA-E’s 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

174

Principles of photoelectrochemical, solar energy conversion  

Science Journals Connector (OSTI)

Photoelectrochemical devices for conversion of solar energy into both electrical energy and chemical energy are discussed with emphasis on how the ... parameters as band gap, doping level, minority carrier lifeti...

M. A. Butler; D. S. Ginley

1980-01-01T23:59:59.000Z

175

Approaches for biological and biomimetic energy conversion  

Science Journals Connector (OSTI)

...biological and biomimetic energy conversion 10.1073...that are related to energy conversion: specifically...synthetic and/or hybrid devices is still...systems that produce energy in an efficient...costs are related to infrastructure, such as supporting...inverters, and grid connections. For...

David A. LaVan; Jennifer N. Cha

2006-01-01T23:59:59.000Z

176

Next-Generation Thermionic Solar Energy Conversion  

Broader source: Energy.gov (indexed) [DOE]

Thermionic Solar Energy Conversion SLAC National Accelerator Laboratory Award Number: CPS 25659 | April 15, 2013 | Melosh * Fabricate heterostructure semiconductor cathodes based...

177

Lockheed Testing the Waters for Ocean Thermal Energy System ...  

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

today, according to Lockheed Martin. The technology in play: Ocean Thermal Energy Conversion (OTEC). Lockheed Martin is developing a design for an OTEC system that would produce...

178

Proceedings of the 25th intersociety energy conversion engineering conference  

SciTech Connect (OSTI)

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

179

Biochemical Conversion | Department of Energy  

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

by enhancing fuel yields in integrated biorefineries which combine conversion types with heat and power efficiencies to produce fuel and products. Lignocellulose (mainly lignin,...

180

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Energy Steven Chu visits Caltech labs For more information or questions about the Light-Material Interactions in Energy Conversion Energy Frontier Research Center, please...

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 DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program  

E-Print Network [OSTI]

for several groups of electrocatalysts ECD PEMFC Catalyst Development Evaluation programs exist for severalEnergy Conversion Devices PEMFC Electrocatalyst Development Program Contact information: Dr. Peter Faguy pfaguyEnergy Conversion DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program

182

Parameterizing energy conversion on rough topography  

E-Print Network [OSTI]

Parameterizing energy conversion on rough topography using bottom pressure sensors to measure form and mixing U0 Form drag pressure Tidal energy conversion Form drag causes: - internal wave generation - eddy Sound, WA Point Three Tree Previous work McCabe et al., 2006 > Measured the internal form drag

Warner, Sally

183

Energy Calculator- Common Units and Conversions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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,

184

Energy Balances for Biomass Conversion Systems  

Science Journals Connector (OSTI)

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

Raphael Katzen

1983-01-01T23:59:59.000Z

185

Energy conversions of a desert depression  

Science Journals Connector (OSTI)

This work is concerned with the energy conversions of a developing atmospheric system in subtropical ... and temporal variations of various components of the energy budget are presented in a detailed analysis. T...

H. Abdel Basset

2001-04-01T23:59:59.000Z

186

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...

John, T.; Cheek, L.

1980-01-01T23:59:59.000Z

187

Improving efficiency of thermoelectric energy conversion devices is a major  

E-Print Network [OSTI]

Abstract · Improving efficiency of thermoelectric energy conversion devices is a major challenge Interdisciplinary Program in Material Science Thermal Physics Lab Vanderbilt University, Nashville, TN 2 S T ZT dominates over increase in Seebeck coefficient leading to poor device performance. Thermoelectric figure

Walker, D. Greg

188

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

189

Advanced, High Power, Next Scale, Wave Energy Conversion Device...  

Broader source: Energy.gov (indexed) [DOE]

Advanced, High Power, Next Scale, Wave Energy Conversion Device Advanced, High Power, Next Scale, Wave Energy Conversion Device Advanced, High Power, Next Scale, Wave Energy...

190

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

191

Tuning energy transport in solar thermal systems using nanostructured materials  

E-Print Network [OSTI]

Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured ...

Lenert, Andrej

2014-01-01T23:59:59.000Z

192

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center...

193

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Si as part of RG-3 research efforts (Chris Gladden, LBNL) The Scientific Vision of the "Light-Material Interactions in Energy Conversion Energy Frontier Research Center"...

194

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Millikan Board Room map California Institute of Technology Pasadena, CA The Light-Material Interactions in Energy Conversion (LMI) Energy Frontier Research Center...

195

Utilizing Nature's Designs for Solar Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

196

Direct Conversion of Light into Work - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Thermal Solar Thermal Industrial Technologies Industrial Technologies Find More Like This Return to Search Direct Conversion of Light into Work Lawrence Berkeley National...

197

Micro Electret Energy Harvesting Device with Analogue Impedance Conversion Circuit  

E-Print Network [OSTI]

Micro Electret Energy Harvesting Device with Analogue Impedance Conversion Circuit Yuji Suzuki1 using a low-power-consumption impedance conversion circuit. Key words: Energy harvesting, Electret, CYTOP, Parylene spring, Impedance conversion 1. INTRODUCTION Energy harvesting from environmental

Kasagi, Nobuhide

198

BIOMASS ENERGY CONVERSION IN HAWAII  

E-Print Network [OSTI]

Analysis of Giant Koa Energy Tree Farms," Hawaii Naturalfor a 1000 acre irrigated energy tree farm on Molokai usingof using eucalyptus trees for energy farming in Hawaii.

Ritschard, Ronald L.

2013-01-01T23:59:59.000Z

199

Release of Inorganic Constituents from Leached Biomass during Thermal Conversion  

Science Journals Connector (OSTI)

Release of Inorganic Constituents from Leached Biomass during Thermal Conversion ... This suggests that while leaching reduces fuel nitrogen, it may also affect the nitrogen combustion chemistry in that a larger fraction of the fuel-bound nitrogen was converted to NO(g) during combustion of the leached samples compared to the unleached samples. ... Six biomasses with different chemical compositions ... ...

D. C. Dayton; B. M. Jenkins; S. Q. Turn; R. R. Bakker; R. B. Williams; D. Belle-Oudry; L. M. Hill

1999-04-28T23:59:59.000Z

200

Ris Energy Report 2 Bioenergy conversion  

E-Print Network [OSTI]

6.3 Risø Energy Report 2 Bioenergy conversion There is a wide range of technologies to derive operate automatically and are in many regions an economic alternative, e.g. Austria and Finland

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

Materials aspects of photoelectrochemical energy conversion  

Science Journals Connector (OSTI)

Stabilization of the light-harvesting semiconductor electrode is a key factor in the design of a photoelectrochemical (PEC) system for solar energy conversion. Approaches to circumvent the problem of PEC...

K. Rajeshwar

1985-01-01T23:59:59.000Z

202

Network Analysis of Photovoltaic Energy Conversion  

Science Journals Connector (OSTI)

Photovoltaic energy conversion in photovoltaic cells has been analyzed by the detailed balance approach or by thermodynamic arguments. Here we introduce a network representation to analyze the performance of such systems once a suitable kinetic model (...

Mario Einax; Abraham Nitzan

2014-11-03T23:59:59.000Z

203

Energy Conversion | Global and Regional Solutions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

204

Novel Energy Conversion Equipment for Low Temperature Geothermal...  

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

Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Project objective: Develop...

205

Potential Impacts of Hydrokinetic and Wave Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on Aquatic Environments Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on...

206

Thermal Energy Transport in Nanostructured Materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

207

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

208

Defect Tolerant Semiconductors for Solar Energy Conversion  

Science Journals Connector (OSTI)

Defect Tolerant Semiconductors for Solar Energy Conversion ... He obtained his Ph.D. in Physics at Paris-Sud University where he modeled Hot Carrier Solar Cells by means of Ensemble Monte Carlo methods. ... These surface energies are significantly lower compared to 96 and 102 meV/Å2 for (1010) and (1120) low energy nonpolar GaN surfaces respectively. ...

Andriy Zakutayev; Christopher M. Caskey; Angela N. Fioretti; David S. Ginley; Julien Vidal; Vladan Stevanovic; Eric Tea; Stephan Lany

2014-03-13T23:59:59.000Z

209

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

210

SunShot Initiative: Next-Generation Thermionic Solar Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

211

Solar Thermal Energy Storage  

Science Journals Connector (OSTI)

Various types of thermal energy storage systems are introduced and their importance and desired characteristics are outlined. Sensible heat storage, which is one of the most commonly used storage systems in pract...

E. Paykoç; S. Kakaç

1987-01-01T23:59:59.000Z

212

Energy from the Biological Conversion of Solar Energy [and Discussion  

Science Journals Connector (OSTI)

7 February 1980 research-article Energy from the Biological Conversion of Solar Energy [and Discussion] N. K. Boardman M...are well designed for the collection and storage of solar energy. Moreover, photosynthetic organisms show...

1980-01-01T23:59:59.000Z

213

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

academia and government to discuss new technologies for redefining the limits of solar energy conversion efficiency. download flyer Invited Speakers Include: Harry...

214

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

government gathered together and discussed new technologies for redefining the limits of solar energy conversion efficiency. The program featured invited talks, a poster session,...

215

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

216

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Caltech Harry Atwater Introduction to the Workshop on Fundamental Challenges in Solar Energy Conversion Harry A. Atwater, Caltech Eli Yablonovitch Fundamental Limits to Light...

217

Exceeding the Limit in Solar Energy Conversion with Multiple Excitons  

Science Journals Connector (OSTI)

The former comes from the transparence of the semiconductor material to solar radiation with photon energies below the bandgap (Eg), while the latter results from the cooling of hot carriers, initially generated by photon energies above Eg, to the band edges before they are extracted to do work. ... Carrier multiplication or singlet fission can be used to decrease the thermalization loss by converting part of the excess photon energy to multiple electron–hole pairs, thus increasing photocurrent. ... (9) However, such enhancement has little effect on the power conversion efficiency because significant carrier multiplication only occurs at photon energies as high as 4Eg. ...

Xiaoyang Zhu

2013-06-18T23:59:59.000Z

218

Photochemical conversion of solar energy  

Science Journals Connector (OSTI)

... THE energy crisis of the early 1970s has stimulated considerable growth in ... crisis of the early 1970s has stimulated considerable growth in solar ...

Anthony Harriman

1978-11-02T23:59:59.000Z

219

A novel thermomechanical energy conversion cycle Ian M. McKinley, Felix Y. Lee, Laurent Pilon  

E-Print Network [OSTI]

A novel thermomechanical energy conversion cycle Ian M. McKinley, Felix Y. Lee, Laurent Pilon of a novel cycle converting thermal and mechanical energy directly into electrical energy. The new cycle is adaptable to changing thermal and mechanical conditions. The new cycle can generate electrical power

Pilon, Laurent

220

Laser spectroscopy of primary energy conversion in  

Science Journals Connector (OSTI)

A review is given of the current status of research on primary processes of energy conversion in photosynthesis. The structural and functional organization of photosynthetic apparatus of higher plants is considered. A description is given of laser probing methods, applications of high-speed optical shutters, and picosecond spectrofluorometry involving the use of image converters. A functional scheme of primary energy conversion by Rhodopseudomonas sphaeroides bacteria is given for the 10?12–10?4 sec range of time intervals. Some nonlinear processes resulting from intense excitation of the pigment apparatus of photosynthesizing organisms are considered.

V Z Pashchenko; L B Rubin

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.


221

Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion  

E-Print Network [OSTI]

research on conversion and storage of solar energy, with anof the solar resource, energy storage is a critical

Dasgupta, Neil

2014-01-01T23:59:59.000Z

222

Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion  

E-Print Network [OSTI]

of the solar resource, energy storage is a criticalon conversion and storage of solar energy, with an emphasis

Dasgupta, Neil

2014-01-01T23:59:59.000Z

223

US energy conversion and use characteristics  

SciTech Connect (OSTI)

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

224

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

which authors are part of the LMI-EFRC: "A.A.A. was supported as part of the DOE "Light-Material Interactions in Energy Conversion' Energy Frontier Research Center under...

225

WEC up! Energy Department Announces Wave Energy Conversion Prize Administrator  

Office of Energy Efficiency and Renewable Energy (EERE)

The Water Power Program today awarded $6.5 million to a Prize Administration Team for the development and execution of the Energy Department’s Wave Energy Conversion (WEC) Prize Competition. The WEC Prize will continue to advance marine and hydrokinetic (MHK) technology as a viable source for America’s clean energy future, in part by providing an opportunity for developers to test their innovative wave energy conversion (WEC) devices in a wave generating basin.

226

Solar energy conversion by chloroplast photoelectrochemical cells  

Science Journals Connector (OSTI)

... the photochemical cell has proved advantageous because of their ease of preparation and their power conversion efficiency of close to 1 %. Fig. l Time course of potential development. ... h even after the light was turned off, illustrated the system's ability to store energy. The ability of the cell to generate a voltage is equivalent to a generator ...

Ravindra Bhardwaj; Rong L. Pan; Elizabeth L. Gross

1981-01-29T23:59:59.000Z

227

On the Energy Conversion during Geostrophic Adjustment  

Science Journals Connector (OSTI)

It is found that for a continuously stratified fluid which remains so during the geostrophic adjustment, the energy conversion ratio ? (??KE/?PE) is ½, 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

228

Wind Energy Conversion Systems (Minnesota) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

229

Magnetic energy storage and conversion in the solar atmosphere  

Science Journals Connector (OSTI)

A review of the theoretical problems associated with preflare magnetic energy storage and conversion is presented. The review consists of three parts; preflare magnetic energy storage, magnetic energy conversion ...

D. S. Spicer

1982-01-01T23:59:59.000Z

230

Advanced Conversion Roadmap Workshop | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Advanced Conversion Roadmap Workshop DOE introduction slides to the Advanced Conversion Roadmap Workshop webinar. ctabwebinardoe.pdf More Documents & Publications Conversion...

231

NREL: Energy Storage - Energy Storage Thermal Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy Storage Thermal Management Infrared image of rectangular battery cell. Infrared thermal image of a lithium-ion battery cell with poor terminal design. Graph of relative...

232

Semiconductor Nanowires for Energy Conversion Allon I. Hochbaum*,  

E-Print Network [OSTI]

Semiconductor Nanowires for Energy Conversion Allon I. Hochbaum*, and Peidong Yang* Department. Introduction: Role of Materials in Energy Conversion 527 2. Why Are Semiconductor Nanowires Special? 527 3 of Materials in Energy Conversion Between 2004 and 2030 the annual global consumption of energy is estimated

Wu, Zhigang

233

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

234

Advanced Energy Conversion LLC AEC | Open Energy Information  

Open Energy Info (EERE)

LLC AEC Jump to: navigation, search Name: Advanced Energy Conversion LLC (AEC) Place: New York Zip: 12020 Product: R&D company focused on power electronics, motion control systems...

235

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Get Involved The LMI-EFRC is a synergistic, engaged team of researchers devoted to light management for solar energy conversion. If you are interested in learning more about the...

236

Issues related to wind energy conversion systems  

Science Journals Connector (OSTI)

There is growing interest in the development of more sustainable electricity systems employing renewable, low-emission resources. In this context, the number of wind power generators installed in the world is increasing, and there are strong indicators that such growth should continue in the next decades. The intensity of wind power expansion depends on different factors related to technical, economic, environmental, governmental, and regulatory issues. This paper presents an overview on various issues related to wind energy conversion systems.

Walmir Freitas; Ahmed Faheem Zobaa; Jose C.M. Vieira; James S. McConnach

2005-01-01T23:59:59.000Z

237

Functionalization of Graphene for Efficient Energy Conversion and Storage  

Science Journals Connector (OSTI)

Functionalization of Graphene for Efficient Energy Conversion and Storage ... Although the efficiency of energy conversion and storage devices depends on a variety of factors, their overall performance strongly relies on the structure and properties of the component materials. ...

Liming Dai

2012-10-03T23:59:59.000Z

238

Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

More Documents & Publications Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Vehicle Technologies Office...

239

Thermal energy storage  

Science Journals Connector (OSTI)

Various types of thermal stares for solar systems are surveyed which include: long-term water stores for solar systems; ground storage using soil as an interseasonal energy store; ground-water aquifers; pebble or rock bed storage; phase change storage; solar ponds; high temperature storage; and cold stores for solar air conditioning system. The use of mathematical models for analysis of the storage systems is considered

W.E.J. Neal

1981-01-01T23:59:59.000Z

240

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network [OSTI]

Survey of Thermal Energy Storage in Aquifers Coupled withLow Temperature Thermal Energy Storage Program of Oak Ridgefor Seasonal Thermal Energy Storage: An Overview of the DOE-

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.


241

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network [OSTI]

Scale Thermal Energy Storage for Cogeneration and Solarsolar captors, thermal effluents, low cost energy duringSeale Thermal Energy Storage for Cogeneration and Solar

Authors, Various

2011-01-01T23:59:59.000Z

242

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network [OSTI]

Survey of Thermal Energy Storage in Aquifers Coupled withconcept of thermal energy storage in aquifers was suggestedAnnual Thermal Energy Storage Contractors' Information

Authors, Various

2011-01-01T23:59:59.000Z

243

Energy from the Biological Conversion of Solar Energy [and Discussion  

Science Journals Connector (OSTI)

...The average efficiency of solar energy conversion on a global scale is estimated as about 0.15%. The energy content of the annual biomass residues in...about one-quarter of the primary energy use in those countries, but only...

1980-01-01T23:59:59.000Z

244

E2I EPRI Assessment Offshore Wave Energy Conversion Devices  

E-Print Network [OSTI]

E2I EPRI Assessment Offshore Wave Energy Conversion Devices Report: E2I EPRI WP ­ 004 ­ US ­ Rev 1 #12;E2I EPRI Assessment - Offshore Wave Energy Conversion Devices Table of Contents Introduction Assessment - Offshore Wave Energy Conversion Devices Introduction E2I EPRI is leading a U.S. nationwide

245

Chalmers University of Technology Henrik Thunman Department of Energy Conversion  

E-Print Network [OSTI]

Chalmers University of Technology Henrik Thunman Department of Energy Conversion ModellingSpecies #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion Continuity Department of Energy Conversion MomentumEquation Momentum the forces of movement g x p x u x u x u u t u µ

246

Chalmers University of Technology Henrik Thunman Department of Energy Conversion  

E-Print Network [OSTI]

Chalmers University of Technology Henrik Thunman Department of Energy Conversion Modelling Thunman Department of Energy Conversion Continuity equation 0= + x u t (Conservation of mass) 0 of the volume #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion Momentum

247

Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion  

E-Print Network [OSTI]

Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion Efficiency Chieh have shown repeatable and consistent electrical outputs with energy conversion efficiency an order for efficient conversion of mechanical energy into electricity. Recent work in the field of nanomaterials has

Lin, Liwei

248

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

E-Print Network [OSTI]

Figure 21. (a) Schemes of energy conversion from exothermicand Renewable Energy Conversion by Innovations of Surfacebiointerfaces, and renewable energy conversion chemistry. In

Somorjai, G.A.

2010-01-01T23:59:59.000Z

249

Power Control and Optimization of Photovoltaic and Wind Energy Conversion Systems /  

E-Print Network [OSTI]

77 5.2 Wind Energy Conversion System . . . . .Optimization and Control in Wind Energy Conversion SystemsAC matrix con- verter for wind energy conversion system,” in

Ghaffari, Azad

2013-01-01T23:59:59.000Z

250

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

Science Journals Connector (OSTI)

Advancing the Frontiers in Nanocatalysis, Biointerfaces, and Renewable Energy Conversion by Innovations of Surface Techniques ... (80-86) These energetic electrons that are not in thermal equilibrium with the metal atoms are called “hot electrons”. ... The activation energies are 22-33 kcal/mol, close to the desorption energy of CO from these surfaces. ...

Gabor A. Somorjai; Heinz Frei; Jeong Y. Park

2009-11-04T23:59:59.000Z

251

A computational analysis of the evaporator/artery of an alkali metal thermal to electric conversion (AMTEC) PX series cell  

E-Print Network [OSTI]

, while minimizing mass. Current technology, such as Radioisotope Thermoelectric Generators (RTG's) are reliable, but do not supply the power conversion efficiencies desired for future space missions. That leads to Alkali Metal Thermal to Electric...-series cells to generate electricity for the deep space vehicle. The higher efficiency of AMTEC compared to other conversion technologies, such as Radioisotope Thermoelectric Generators (RTG's), results in less energy source material being launched...

Pyrtle, Frank

1999-01-01T23:59:59.000Z

252

Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion  

Science Journals Connector (OSTI)

Semiconductor nanowires (NW) possess several beneficial properties for efficient conversion of solar energy into electricity and chemical energy. Due to their efficient absorption of light, short distances for...

Neil P. Dasgupta; Peidong Yang

2014-06-01T23:59:59.000Z

253

Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...  

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

Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Nanostructured High-Temperature Bulk Thermoelectric Energy...

254

Glasses for solar energy conversion systems  

Science Journals Connector (OSTI)

Solar technologies are projected to increase tremendously over the next 10 years. Glasses are playing an important role as transparent materials of photovoltaic (PV) cells and concentrating solar power (CSP) systems. Glasses are materials of short energy payback time and environmental compatibility suitable for sustainable energy concepts. The paper reviews recent solar applications. Surface structuring and coating of glasses are shown to improve energy efficiency for solar conversion systems substantially. Encapsulated glass-to-glass PV modules and solar photocatalytic glass surfaces are identified as elements of a green architecture combining renewable power generating and destruction of air pollutants of urban environments. Emerging solar technologies for power generation, including transparent PV modules, solar chimney and thermoelectric systems may become significant areas of future solar glass applications.

J. Deubener; G. Helsch; A. Moiseev; H. Bornhöft

2009-01-01T23:59:59.000Z

255

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

256

Beilstein-Institut Reflections on Energy Conversion in  

E-Print Network [OSTI]

Beilstein-Institut Reflections on Energy Conversion in Biological and Biomimetic Systems Athel by conversion of the heat into work, chemical energy or electrical power, and the inevitable energy losses 2011 Abstract In principle any form of energy (light, electrical, potential, chemical, kinetic energy

257

Thermal Storage of Solar Energy  

Science Journals Connector (OSTI)

Thermal storage is needed to improve the efficiency and usefulness of solar thermal systems. The paper indicates the main storage ... which would greatly increase the practical use of solar energy — is more diffi...

H. Tabor

1984-01-01T23:59:59.000Z

258

Ocean Thermal Extractable Energy Visualization: Final Technical...  

Office of Environmental Management (EM)

Ocean Thermal Extractable Energy Visualization: Final Technical Report Ocean Thermal Extractable Energy Visualization: Final Technical Report Report about the Ocean Thermal...

259

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

260

Energy Conversion and Transmission Facilities (South Dakota) | Department  

Broader source: Energy.gov (indexed) [DOE]

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

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

Azobenzene-Functionalized Carbon Nanotubes As High-Energy Density Solar Thermal Fuels  

Science Journals Connector (OSTI)

Azobenzene-Functionalized Carbon Nanotubes As High-Energy Density Solar Thermal Fuels ... Solar thermal fuels, which reversibly store solar energy in molecular bonds, are a tantalizing prospect for clean, renewable, and transportable energy conversion/storage. ... Here we present a novel solar thermal fuel, composed of azobenzene-functionalized carbon nanotubes, with the volumetric energy density of Li-ion batteries. ...

Alexie M. Kolpak; Jeffrey C. Grossman

2011-06-20T23:59:59.000Z

262

Biofuel Conversion Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

263

Vibrational energy redistribution in glyoxal following internal conversion  

E-Print Network [OSTI]

Vibrational energy redistribution in glyoxal following internal conversion R. Naaman,a) D. M, more than 50% of the energy in S1 is transferred to the ground state by internal conversion 4 June 1979; accepted 10 August 1979) The vibrational redistribution of energy following internal

Zare, Richard N.

264

Conversion of Solar to Electrical Energy  

Science Journals Connector (OSTI)

A photovoltaic device has been developed which converts solar radiation directly into electrical energy with an over-all efficiency of 11%. This consists of a p-n junction formed by gaseous diffusion near the front surface of a silicon plate. In full sunlight a single cell furnishes approximately 30 ma of short circuit current per square centimeter of surface 0.6 v of open circuit voltage and 12 mw of power into a matched load per square centimeter of surface. Like other electric batteries individual cells may be connected in series or parallel to obtain an increase in terminal voltage or current. The spectral response is a maximum near 0.7 µ and the long wavelength cutoff is at approximately 1.1 µ. The efficiency of this new siliconp-n junctionphotovoltaic cell is greater by a factor of 20 than that previously reported for other types of photocells and makes the conversion of the sun's energy directly into electricity possible for a number of interesting applications. A Bell System field trial at Americus Georgia in which solar batteries are used to power a rural carrier telephone communication system is described. A number of other possible applications for this new solar energy converter are discussed.

G. L. Pearson

1957-01-01T23:59:59.000Z

265

Plasmonic enhancement of catalysis and solar energy conversion.  

E-Print Network [OSTI]

??This thesis is dedicated to exploring the potential applications of plasmonic metal nanoparticles and understanding their fundamental enhancement mechanisms. Photocatalysis and solar energy conversion are… (more)

Hung, Wei Hsuan

2011-01-01T23:59:59.000Z

266

Nx-TEC: Next-Generation Thermionic Solar Energy Conversion  

Broader source: Energy.gov (indexed) [DOE]

(MSE), ZX Shen (SIMES), Roger Howe (EE) Nx-TEC: Next-Generation Thermionic Solar Energy Conversion SLAC National Accelerator Laboratory Award Number:CPS 25659 Start date:...

267

Liquid Metal MHD Energy Conversion in Fusion Reactors  

Science Journals Connector (OSTI)

Innovative Concepts for Power Conversion / Proceedings of the Seveth Topical Meeting on the Technology of Fusion Energy (Reno, Nevada, June 15–19, 1986)

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

268

Multiple-junction quantum cascade photodetectors for thermophotovoltaic energy conversion  

Science Journals Connector (OSTI)

The use of intersubband transitions in quantum cascade structures for thermophotovoltaic energy conversion is investigated numerically. The intrinsic cascading scheme, spectral...

Yin, Jian; Paiella, Roberto

2010-01-01T23:59:59.000Z

269

Plasmonic and High Index Nanostructures for Efficient Solar Energy Conversion  

Science Journals Connector (OSTI)

I will discuss the use of nanometallic and high-index dielectric nanostructures in boosting the energy conversion efficiency of photovoltaic and photo-electrochemical cells.

Brongersma, Mark L

270

Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources  

Broader source: Energy.gov [DOE]

Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources presentation at the April 2013 peer review meeting held in Denver, Colorado.

271

An overview of the progress in photoelectrochemical energy conversion  

Science Journals Connector (OSTI)

An overview of the progress in photoelectrochemical energy conversion ... Kinetic studies of carrier transport and recombination at the n-silicon methanol interface ...

Bruce Parkinson

1983-01-01T23:59:59.000Z

272

Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...  

Broader source: Energy.gov (indexed) [DOE]

High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Project Overview 2 * Start: October 2011 * End: September 2015 * Percent complete -...

273

Designing Semiconductor Metal Oxides for Photoelectrochemical Energy Conversion  

Science Journals Connector (OSTI)

Innovative materials hold the key for renewable energy conversion. In this talk, we will introduce our recent progress in semiconducting metal oxides, which underpin a number of...

Wang, Lianzhou

274

Photovoltaic Cell Conversion Efficiency Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

275

Synergistic energy conversion processes using nuclear energy and fossil fuels  

Science Journals Connector (OSTI)

This paper reviews the methods of producing energy carriers, such as electricity, hydrocarbons and hydrogen, by utilising both nuclear energy and fossil fuels synergistically. There are many possibilities for new, innovative, synergistic processes, which combine chemical and nuclear systems for efficient, clean and economical production of energy carriers. Besides the individual processes by each form of energy to produce the energy carriers, the synergistic processes which use two primary energies to produce the energy carriers will become important with the features of resource saving, CO2 emission reduction and economic production, due to the higher conversion efficiency and low cost of nuclear heat. The synergistic processes will be indispensable to the 21st century, when efficient best-mixed supplies of available primary energies are crucial.

Masao Hori

2009-01-01T23:59:59.000Z

276

Next-Generation Thermionic Solar Energy Conversion  

Broader source: Energy.gov (indexed) [DOE]

Microscale-enhanced thermionic emitters will enable high-efficiency, solar-to-electrical conversion by taking advantage of both heat and light. Image from Stanford University...

277

Thermochemical Conversion Related Links | Department of Energy  

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

website's Information Resources section. Some key publications are: Using Heat and Chemistry to Make Fuel and Power: Thermochemical Conversion (January 2011) Thermochemical...

278

Design and Performance of Linear Biomechanical Energy Conversion Devices Penglin Niu, Student Member  

E-Print Network [OSTI]

Design and Performance of Linear Biomechanical Energy Conversion Devices Penglin Niu, Student, energy conversion, synchronous rectifier, voltage tripler, energy harvesting, human power. I investigated motions as energy sources for biomechanical energy conversion [1-7]. Until recently, most efforts

Chapman, Patrick

279

High Energy Utilization, Co-Generation Nuclear power Plants With Static Energy Conversion  

SciTech Connect (OSTI)

In addition to being cost effective, very small nuclear power plants with static energy conversion could meet the needs and the energy mix in underdeveloped countries and remote communities, which may include electricity, residential and industrial space heating, seawater desalination, and/or high temperature process heat or steam for industrial uses. These plants are also an attractive option in naval, marine, and undersea applications, when the absence of a sound signature is highly desirable. An Analysis is performed of Gas Cooled Reactor (CGR) and Liquid Metal Cooled Reactor (LMR), very small nuclear power plants with static energy conversion, using a combination of options. These include Alkali Metal Thermal-to-Electric Converters (AMTECs) and both single segment and segmented thermoelectric converters. The total energy utilization of these plants exceeds 88%. It includes the fraction of the reactor's thermal power converted into electricity and delivered to the Grid at 6.6 kVA and those used for residential and industrial space heating at {approx}370 K, seawater desalination at 400 K, and/or high temperature process heat or steam at {approx}850 K. In addition to its inherently high reliability, modularity, low maintenance and redundancy, static energy conversion used in the present study could deliver electricity to the Grid at a net efficiency of 29.5%. A LMR plant delivers 2-3 times the fraction of the reactor thermal power converted into electricity in a GCR plant, but could not provide for both seawater desalination and high temperature process heat/steam concurrently, which is possible in GCR plants. The fraction of the reactor's thermal power used for non-electrical power generation in a GCR plant is {approx} 10 - 15% higher than in a LMR plant. (authors)

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

2002-07-01T23:59:59.000Z

280

Plasmon Enhanced Solar-to-Fuel Energy Conversion  

Science Journals Connector (OSTI)

Plasmon Enhanced Solar-to-Fuel Energy Conversion ... As a result, many photoexcited carriers are generated too far from a reactive surface and recombine instead of participating in solar-to-fuel conversion. ... attractive approach is to store solar-converted energy as chem. ...

Isabell Thomann; Blaise A. Pinaud; Zhebo Chen; Bruce M. Clemens; Thomas F. Jaramillo; Mark L. Brongersma

2011-07-12T23:59:59.000Z

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

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":""}]}

282

Solid State Energy Conversion Alliance (SECA) Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

283

AQUIFER THERMAL ENERGY STORAGE  

E-Print Network [OSTI]

and Zakhidov, 1971. "Storage of Solar Energy in a Sandy-Aquifer Storage of Hot Water from Solar Energy Collectors,"with solar energy systems, aquifer energy storage provides a

Tsang, C.-F.

2011-01-01T23:59:59.000Z

284

AQUIFER THERMAL ENERGY STORAGE  

E-Print Network [OSTI]

Zakhidov, 1971. "Storage of Solar Energy in a Sandy-Gravelwith solar energy systems, aquifer energy storage provides aAquifer Storage of Hot Water from Solar Energy Collectors,"

Tsang, C.-F.

2011-01-01T23:59:59.000Z

285

Thermal Energy Storage Technologies  

Science Journals Connector (OSTI)

Energy, the lifeline of all activities is highly ... a country. The gap present between the energy generation and the energy consumption keeps expanding with a precipitous increase in the demand for the energy, e...

R. Parameshwaran; S. Kalaiselvam

2013-01-01T23:59:59.000Z

286

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 effect) such a neutral displacement is accompanied by a conversion between internal energy E and gravitational potential energy U, and an equal conversion between U and kinetic energy K. While there is thus

Nycander, Jonas

287

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

288

Fabrication and testing of an infrared spectral control component for thermophotovoltaic power conversion applications  

E-Print Network [OSTI]

Thermophotovoltaic (TPV) power conversion is the direct conversion of thermal radiation to electricity. Conceptually, TPV power conversion is a very elegant means of energy conversion. A thermal source emits a radiative ...

O'Sullivan, Francis M. (Francis Martin), 1980-

2004-01-01T23:59:59.000Z

289

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network [OSTI]

and J. Schwarz, Survey of Thermal Energy Storage in AquifersLow Temperature Thermal Energy Storage Program of Oak RidgeAquifers for Seasonal Thermal Energy Storage: An Overview of

Authors, Various

2011-01-01T23:59:59.000Z

290

Direct Non-oxidative Methane Conversion by Non-thermal Plasma: Experimental Study  

Science Journals Connector (OSTI)

The direct non-oxidative conversion of methane to higher hydrocarbons in non-thermal plasma, namely dielectric barrier discharge and corona discharge, has been investigated experimentally at atmospheric pressure....

Yun Yang

2003-06-01T23:59:59.000Z

291

Secondary Capture of Chlorine and Sulfur during Thermal Conversion of Biomass  

Science Journals Connector (OSTI)

Secondary Capture of Chlorine and Sulfur during Thermal Conversion of Biomass ... Six biomasses with different chemical compositions ... ... Therefore, different types of woody biomass and biomass residues (shells) were thermochemically converted in an atmospheric flow ... ...

Jacob N. Knudsen; Peter A. Jensen; Weigang Lin; Kim Dam-Johansen

2005-02-10T23:59:59.000Z

292

Demonstrating Energy Conversion with Piezoelectric Crystals and a Paddle Fan  

Science Journals Connector (OSTI)

A simple energy conversion system—particularly the conversion of mechanical energy into electrical energy by using shaker flashlights—has recently been presented. 1 This system uses hand generators consisting of a magnet in a tube with a coil wrapped around it and acts as an ac source when the magnet passes back and forth through the coil. Additionally this system includes an LED a capacitor a switch and a full-wave bridge rectifier. We were inspired by this work to design a simpler demonstrator made for teaching energy conversion concepts to science students using piezoelectric material. 2 3

Prissana Rakbamrung; Chatchai Putson

2014-01-01T23:59:59.000Z

293

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":""}]}

294

Chapter 24 - Fuel Cells: Energy Conversion Technology  

Science Journals Connector (OSTI)

The drive for fuel cell technology research and development stems from cleanliness of the technology, high chemical to electrical conversion efficiency and versatile applications ranging from large-scale, stand-alone stationary power plant to modular distributed generation systems to advanced mobile auxiliary power units. Portable systems and those that can be carried are also currently being designed for civilian and military markets. Fuel cells are capable of generating electricity with virtually negligible to zero pollution (e.g. SOx, NOx, volatile organic compounds (VOC), particulate matters (PMs)). They also offer a reduced carbon footprint and have the potential to be engineered for ‘zero carbon’ systems. Despite the potential to meet the pressing needs for clean and efficient fuel cell–based power generation systems, high capital and maintenance cost remains a challenge for large-scale commercialisation and global market entry. Solid oxide fuel cell (SOFC) is one of the most promising fuel cell technologies as it offers significantly higher electrical efficiency as well as co-production of high-quality process heat. The system lifetime, its reliability and cost, however, remain a concern due to the performance degradation with time, commonly associated with the instability of materials in complex operating environment and high exposure temperature (650–1000)°C. New materials, systems design and operating conditions are being developed to increase the lifetime. Centralised and distributed SOFC power systems in the range of hundreds of kilowatt to megawatt are being considered for integration with advanced coal power plants, hybrid systems integrated with energy storage and carbon-capture technologies to fully exploit the commercial potential.

Manoj K. Mahapatra; Prabhakar Singh

2014-01-01T23:59:59.000Z

295

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

296

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

297

Biomass Gasification using Solar Thermal Energy M. Munzinger and K. Lovegrove  

E-Print Network [OSTI]

.lovegrove@anu.edu.au Hydrogen from Biomass as an energy carrier has generated increasing interest in recent years in connection with the use of solar heat as energy source for the conversion reaction. Biomass gasification effective as high energy density transport fuels. Gas derived from solar thermal conversion of biomass

298

North Dakota Energy Conversion and Transmission Facility Siting Act (North  

Broader source: Energy.gov (indexed) [DOE]

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

299

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

300

Photo-mechanical energy conversion using polymer brush dissociation  

E-Print Network [OSTI]

A device is investigated that continuously and directly converts light into mechanical energy, using polymers and photodissociation. A polymer brush tethered to a surface, is brought into contact with a parallel plate a small distance above it that contains reaction sites where photodissociation of bound polymer and light can occur. Under the appropriate conditions, the collective effect of these polymers is to apply a force parallel to the plates, converting incoming light into mechanical work. Numerical work is carried out to understand this effect, a three dimensional Langevin simulation, solution to the Fokker Planck equation, and a one dimensional Monte Carlo simulation. Theoretical analysis of the Fokker Planck equation is used to study a model where equilibration of the unbound state occurs and equilibration to a metastable equilibrium is achieved in the bound state. It is shown that the work per cycle can be made much larger than the thermal energy but at the expense of requiring a greatly diminished photodissociation rate. Parameters are discussed in order optimize mechanical energy conversion.

J. M. Deutsch

2013-01-03T23:59:59.000Z

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

Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion  

SciTech Connect (OSTI)

Semiconductor nanowires (NW) possess several beneficial properties for efficient conversion of solar energy into electricity and chemical energy. Due to their efficient absorption of light, short distances for minority carriers to travel, high surface-to-volume ratios, and the availability of scalable synthesis methods, they provide a pathway to address the low cost-to-power requirements for wide-scale adaptation of solar energy conversion technologies. Here we highlight recent progress in our group towards implementation of NW components as photovoltaic and photoelectrochemical energy conversion devices. An emphasis is placed on the unique properties of these one-dimensional (1D) structures, which enable the use of abundant, low-cost materials and improved energy conversion efficiency compared to bulk devices.

Dasgupta, Neil; Yang, Peidong

2013-01-23T23:59:59.000Z

302

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

E-Print Network [OSTI]

ENERGY STORAGE FOR CONCENTRATING SOLAR POWER PLANTS,”Thermal Energy Storage in Concentrated Solar Thermal PowerThermal Energy Storage in Concentrated Solar Thermal Power

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

303

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

E-Print Network [OSTI]

CHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLAR POWERfor Thermal Energy Storage in Concentrated Solar Thermalfor Thermal Energy Storage in Concentrated Solar Thermal

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

304

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

E-Print Network [OSTI]

and Background Solar thermal energy collection is anCHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLAR POWERfor Thermal Energy Storage in Concentrated Solar Thermal

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

305

Sandia National Laboratories: solar thermal energy storage  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

thermal energy storage Sandia Solar Energy Test System Cited in National Engineering Competition On May 16, 2013, in Concentrating Solar Power, Energy, Energy Storage, Facilities,...

306

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

Proceedings on thermal energy storage and energy conversion;polymer microcomposites for thermal energy storage. SAE SocLow temperature thermal energy storage: a state of the art

Roshandell, Melina

2013-01-01T23:59:59.000Z

307

Analysis of a direct energy conversion system using medium energy helium ions  

E-Print Network [OSTI]

in Direct Energy Conversion Fission Electric Cells", Transactions of the American Nuclear Society, 91, 2(2004). 2) G. H. Miley, Fusion Energy Conversion, American Nuclear Society, Hinsdale, IL, 77 (1976). 3) G. I. Budker, ?Thermonuclear Reactions... in Direct Energy Conversion Fission Electric Cells", Transactions of the American Nuclear Society, 91, 2(2004). 2) G. H. Miley, Fusion Energy Conversion, American Nuclear Society, Hinsdale, IL, 77 (1976). 3) G. I. Budker, ?Thermonuclear Reactions...

Carter, Jesse James

2006-08-16T23:59:59.000Z

308

Prospects for conversion of solar energy into chemical fuels: the concept of a solar fuels industry  

Science Journals Connector (OSTI)

...associated with solar energy conversion in a non-intense...clear that solar energy conversion could be invaluable...to 30 per cent conversion efficiency are...breakdown of our energy needs (DECC...biggest single factor. This is critical...

2013-01-01T23:59:59.000Z

309

Soft materials for linear electromechanical energy conversion  

E-Print Network [OSTI]

We briefly review the literature of linear electromechanical effects of soft materials, especially in synthetic and biological polymers and liquid crystals (LCs). First we describe results on direct and converse piezoelectricity, and then we discuss a linear coupling between bending and electric polarization, which maybe called bending piezoelectricity, or flexoelectricity.

Antal Jakli; Nandor Eber

2014-07-29T23:59:59.000Z

310

ihLSEVIFR Optical Materials 3 (1994) 115--121 Absolute non-radiative energy conversion efficiency scanning  

E-Print Network [OSTI]

, in optical materials. 1. Introduction reported optical absorptions and optical-to-thermal energy conversion of transparent, high-qual- which PPES 11NR studies have been reported have itylaser materials, ~NR (A) the absence of irre- radiativecenters during the quadrature scan, as corn- producible thermal resistances

Mandelis, Andreas

311

Magnetic energy conversion, magnetospheric substorms and solar flares  

Science Journals Connector (OSTI)

... The magnetospheric substorm has been thought to be the manifestation of a sudden conversion of the magnetic ... of the magnetic energy stored in the magnetotail before substorm onset. It has been believed that solar flares ...

S.-I. Akasofu

1980-03-20T23:59:59.000Z

312

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...

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

1982-01-01T23:59:59.000Z

313

Appropriate Technology Approach to Solar Energy Conversion  

Science Journals Connector (OSTI)

When we want to introduce Solar Energy into the energy system, there are two main approaches possible. The first one consists in transforming Solar energy into some traditional primary or secondary energy form...

B. Bartoli

1980-01-01T23:59:59.000Z

314

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

315

Energy and reliability benefits of wind energy conversion systems  

Science Journals Connector (OSTI)

The electrical energy production and reliability benefits of a wind energy conversion system (WECS) at a specific site depend on many factors, including the statistical characteristics of the site wind speed and the design characteristics of the wind turbine generator (WTG) itself, particularly the cut-in, rated and cut-out wind speed parameters. In general, the higher the degree of the wind site matching with a WECS is, the more are the energy and reliability benefits. An electrical energy production and reliability benefit index designated as the Equivalent Capacity Ratio (ECR) is introduced in this paper. This index can be used to indicate the electrical energy production, the annual equivalent utilization time and the credit of a WECS, and quantify the degree of wind site matching with a WECS. The equivalent capacity of a WECS is modeled as the expected value of the power output random variable with the probability density function of the site wind speed. The analytical formulation of the ECR is based on a mathematical derivation with high accuracy. Twelve WTG types and two test systems are used to demonstrate the effectiveness of the proposed model. The results show that the ECR provides a useful index for a WTG to evaluate the energy production and the relative reliability performance in a power system, and can be used to assist in the determination of the optimal WTG type for a specific wind site.

Kaigui Xie; Roy Billinton

2011-01-01T23:59:59.000Z

316

New developments in direct nuclear fission energy conversion devices  

SciTech Connect (OSTI)

Some experimental and theoretical results obtained in the investigations undertaken at the Central Institute of Physics (CIP) in Bucharest-Romania concerning the direct nuclear energy conversion into electrical energy are presented. Open-circuit voltages (U /SUB oc/ ) of tens of kV and short-circuit currents (J /SUB sc/ ) of several ..mu..A were obtained in experiments with vacuum fission-electric cells (FEC) developed in the CIP and irradiated in the VVR-S reactor at a 10/sup 9/ neutrons/cm/sup 2/s thermal neutron flux. A gas filled FEC (GAFFC) has been devised and tested in the reactor at the same neutron flux. With this GAFEC U /SUB oc/ of hundreds of kV, J /SUB sc/ of hundreds of ..mu..A and powers of hundreds of mW have been obtained. Our researches pointed out the essential part played by the electrons in the charge transport dynamics occuring in the FEC and the influence of the secondary emission on the FEC operation.

Ursu, I.; Badescu-Singureann, A.I.; Schachter, L.

1983-08-01T23:59:59.000Z

317

Energy Conversion Materials Through Chemical Synthesis Route  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

318

Enzymatic Hydrogen Production:? Conversion of Renewable Resources for Energy Production  

Science Journals Connector (OSTI)

Enzymatic Hydrogen Production:? Conversion of Renewable Resources for Energy Production ... Steam-exploded aspen wood containing 60% cellulose was a gift from Michael Himmel of the National Renewable Energy Laboratory, Golden, Colorado. ... The previous data demonstrate that the two primary components of renewable sources of energy such as biomassglucose and xyloseare capable of oxidiation by GDH, resulting in hydrogen production if hydrogenase is present. ...

Jonathan Woodward; Kimberley A. Cordray; Robert J. Edmonston; Maria Blanco-Rivera; Susan M. Mattingly; Barbara R. Evans

1999-11-20T23:59:59.000Z

319

Composites for Multi-energy conversion & waste heat recovery  

Broader source: Energy.gov [DOE]

Discusses development of a composite that transfers energy between thermal, electrical, magnetic, and mechanical types and a composite material that improves performance through in situ strengthening

320

Thermal Imaging Technique for Measuring Mixing of Fluids - Energy...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Thermal Solar Thermal Energy Analysis Energy Analysis Building Energy Efficiency Building Energy Efficiency Find More Like This Return to Search Thermal Imaging Technique for...

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

Risks in the Conversion of Energy  

Science Journals Connector (OSTI)

Modern society is dependent upon the availability of an abundant supply of cheap energy. The use of energy is basically a positive factor necessary for our prosperity, but like all other industrial activities,...

Monica Gullberg; Torbjörn Thedéen

2010-01-01T23:59:59.000Z

322

Light energy conversion in Halobacterium halobium.  

Science Journals Connector (OSTI)

...function for lightJ/dark adaptation has...132-134) energy-transducing...other means in the dark. In the envelope...ment of ATP in energy coupling is miniimal...this time. A survey of maximal transport...arranged in the dark by appro- priately...other sources of energy, it has been...

J K Lanyi

1978-12-01T23:59:59.000Z

323

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.

324

Solar Energy Conversion by Dye-Sensitized Photovoltaic Cells  

Science Journals Connector (OSTI)

The device converted more than 60% of the incident photons to electric current at the absorption maximum of the sensitizer near 470 nm, and the overall conversion efficiency in full sunlight was between 1 and 2%. ... This striking performance defies expectations because such large-area junctions should fare poorly in photovoltaic energy conversion in the presence of defects at the disordered surface, enhancing the recombination of photogenerated charge carriers. ... less than one exciton is initially generated per NC, gave ?2 excitons (carrier multiplication) when pump photon energies are >3 times the NC band gap energy. ...

Michael Grätzel

2005-09-26T23:59:59.000Z

325

Managing Complex Photophysical Pathways for Solar Energy Conversion  

Science Journals Connector (OSTI)

Managing Complex Photophysical Pathways for Solar Energy Conversion ... Zhu provides us with a refreshing discussion of the advantages and limitations of models presently employed to depict the interconversion of excitons and charge carriers and proposes a new energy level diagram for this purpose based exclusively on single-particle energies of ground and optically excited states. ... For example, in photosynthesis, antenna complexes capture sunlight and direct the energy to reaction centers that then carry out the assocd. ...

Ryan D. Pensack; Gregory D. Scholes

2014-07-03T23:59:59.000Z

326

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

327

Energy Conversion from Salinity Gradients by Forward Osmosis–Electrokinetics  

Science Journals Connector (OSTI)

Energy Conversion from Salinity Gradients by Forward Osmosis–Electrokinetics ... Through the use of a salinity gradient, a suction force is created to induce a hydrodynamic flow in the FO submodule based on the principle of FO. ... Kiviat, F. E.Energy Recovery from Saline Water by Means of Electrochemical Cells Science 1976, 194, 719– 720 ...

Yanmei Jiao; Chun Yang; Yuejun Kang

2014-03-12T23:59:59.000Z

328

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

SciTech Connect (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

329

Nanostructured materials for solar energy conversion.  

E-Print Network [OSTI]

??The energy requirements of our planet will continue to grow with increasing world population and the modernization of currently underdeveloped countries. This will force us… (more)

Hoang, Son Thanh

2013-01-01T23:59:59.000Z

330

Utilizing Nature's Designs for Solar Energy Conversion  

Broader source: Energy.gov [DOE]

Presentation by Lisa Utschig, Argonne National Laboratory, at the Biological Hydrogen Production Workshop held September 24-25, 2013, at the National Renewable Energy Laboratory in Golden, Colorado.

331

ITP Industrial Distributed Energy: Microturbine Power Conversion...  

Broader source: Energy.gov (indexed) [DOE]

after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http:www.osti.govbridge Not available...

332

The maximum efficiency of the conversion of solar energy into wind energy  

Science Journals Connector (OSTI)

In the present paper the Gordon and Zarmi model is applied for the conversion of solar energy into wind energy in such a way that simple calculations lead to a universal result: The upper bound for the conversion efficiency of solar energy into wind energy equals 8.3%.

Alexis De Vos; Guust Flater

1991-01-01T23:59:59.000Z

333

Energy Conversion Efficiency of Nanofluidic Batteries: Hydrodynamic Slip and Access Resistance  

E-Print Network [OSTI]

Energy Conversion Efficiency of Nanofluidic Batteries: Hydrodynamic Slip and Access Resistance Yu and concentration polarization) on the energy conversion efficiency of pressure-driven electrolyte flow through battery system is its low energy conversion efficiency. Up to now, the energy conversion efficiencies have

Chang, Hsueh-Chia

334

Solar energy conversion via hot electron internal photoemission in metallic nanostructures: Efficiency estimates  

E-Print Network [OSTI]

Solar energy conversion via hot electron internal photoemission in metallic nanostructures://scitation.aip.org/termsconditions. Downloaded to ] IP: 131.215.44.236 On: Tue, 01 Apr 2014 22:46:10 #12;Solar energy conversion via hot electron for the construction of solar energy-conversion devices. Herein, we evaluate theoretically the energy-conversion

Atwater, Harry

335

Better Buildings: Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions  

Broader source: Energy.gov [DOE]

Better Buildings: Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions

336

Guidelines in Wave Energy Conversion System Design  

E-Print Network [OSTI]

This paper presents an investigational study on wave energy converters (WECs). The types of WEC available from the market are studied first. The design considerations for implementing a WEC in the Gulf of Mexico (GOM) are then evaluated...

Guiberteau, K. L.; Liu, Y.; Lee, J.; Kozman, T.

2014-01-01T23:59:59.000Z

337

Electromagnetic Energy Conversion at Reconnection Fronts  

Science Journals Connector (OSTI)

...active galactic nuclei, and planetary magnetospheres. In Earth’s space environment, reconnection facilitates solar wind energy input into the magnetosphere by enabling solar wind field lines to cross the magnetopause and be directly connected...

V. Angelopoulos; A. Runov; X.-Z. Zhou; D. L. Turner; S. A. Kiehas; S.-S. Li; I. Shinohara

2013-09-27T23:59:59.000Z

338

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

339

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2: Solar Spectrum Control and Conversion RG Leader: John Rogers Affiliated PIs: Paul Alivisatos, Harry Atwater, Paul Braun, Mark Brongersma, Jennifer Dionne, Shanhui Fan, Ralph...

340

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

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

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

342

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion -  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

343

Development of the market of thermal energy  

Science Journals Connector (OSTI)

Specific features relating to development of the market of thermal energy and its management structure are considered, and...

V. A. Koksharov

2009-12-01T23:59:59.000Z

344

Energy Conversion Advanced Heat Transport Loop and Power Cycle  

SciTech Connect (OSTI)

The Department of Energy and the Idaho National Laboratory are developing a Next Generation Nuclear Plant (NGNP) to serve as a demonstration of state-of-the-art nuclear technology. The purpose of the demonstration is two fold 1) efficient low cost energy generation and 2) hydrogen production. Although a next generation plant could be developed as a single-purpose facility, early designs are expected to be dual-purpose. While hydrogen production and advanced energy cycles are still in its early stages of development, research towards coupling a high temperature reactor, electrical generation and hydrogen production is under way. Many aspects of the NGNP must be researched and developed in order to make recommendations on the final design of the plant. Parameters such as working conditions, cycle components, working fluids, and power conversion unit configurations must be understood. Three configurations of the power conversion unit were demonstrated in this study. A three-shaft design with 3 turbines and 4 compressors, a combined cycle with a Brayton top cycle and a Rankine bottoming cycle, and a reheated cycle with 3 stages of reheat were investigated. An intermediate heat transport loop for transporting process heat to a High Temperature Steam Electrolysis (HTSE) hydrogen production plant was used. Helium, CO2, and an 80% nitrogen, 20% helium mixture (by weight) were studied to determine the best working fluid in terms cycle efficiency and development cost. In each of these configurations the relative component size were estimated for the different working fluids. The relative size of the turbomachinery was measured by comparing the power input/output of the component. For heat exchangers the volume was computed and compared. Parametric studies away from the baseline values of the three-shaft and combined cycles were performed to determine the effect of varying conditions in the cycle. This gives some insight into the sensitivity of these cycles to various operating conditions as well as trade offs between efficiency and capital cost. Prametric studies were carried out on reactor outlet temperature, mass flow, pressure, and turbine cooling. Recommendations on the optimal working fluid for each configuration were made. A steady state model comparison was made with a Closed Brayton Cycle (CBC) power conversion system developed at Sandia National Laboratory (SNL). A preliminary model of the CBC was developed in HYSYS for comparison. Temperature and pressure ratio curves for the Capstone turbine and compressor developed at SNL were implemented into the HYSYS model. A comparison between the HYSYS model and SNL loop demonstrated power output predicted by HYSYS was much larger than that in the experiment. This was due to a lack of a model for the electrical alternator which was used to measure the power from the SNL loop. Further comparisons of the HYSYS model and the CBC data are recommended. Engineering analyses were performed for several configurations of the intermediate heat transport loop that transfers heat from the nuclear reactor to the hydrogen production plant. The analyses evaluated parallel and concentric piping arrangements and two different working fluids, including helium and a liquid salt. The thermal-hydraulic analyses determined the size and insulation requirements for the hot and cold leg pipes in the different configurations. Economic analyses were performed to estimate the cost of the va

Oh, C. H.

2006-08-01T23:59:59.000Z

345

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 m...

Saint-Hilaire, P; Saint-Hilaire, Pascal; Benz, Arnold O.

2005-01-01T23:59:59.000Z

346

Charging-free electrochemical system for harvesting low-grade thermal energy  

Science Journals Connector (OSTI)

...Mechanical Engineering, Massachusetts Institute of Technology...Mechanical Engineering, Massachusetts Institute of Technology...processes, environment, solar-thermal, and geothermal energy (1...Commun 2 : 550 Work at Massachusetts Institute of Technology...by the Solid State Solar-Thermal Energy Conversion...

Yuan Yang; Seok Woo Lee; Hadi Ghasemi; James Loomis; Xiaobo Li; Daniel Kraemer; Guangyuan Zheng; Yi Cui; Gang Chen

2014-01-01T23:59:59.000Z

347

Engineering Molecular Transformations for Sustainable Energy Conversion  

Science Journals Connector (OSTI)

Nature’s enzymes can exquisitely integrate highly active catalytic centers within flexible environments that can adaptively guide reactants to products with very high activities and selectivities. ... The sustainable production of energy presents one of the greatest societal challenges that we will face over the next few decades. ... We assess these four functionals by comparing their performance to that of 12 other functionals and Hartree-Fock theory for 403 energetic data in 29 diverse databases, including ten databases for thermochem., four databases for kinetics, eight databases for noncovalent interactions, three databases for transition metal bonding, one database for metal atom excitation energies, and three databases for mol. ...

Matthew Neurock

2010-10-11T23:59:59.000Z

348

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

349

Trapping of molecular hydrogen at surfaces via translational-rotational energy conversion  

Science Journals Connector (OSTI)

Using electron-energy-loss spectroscopy (EELS) intensities of rotational transitions and work-function changes as monitors, we show that molecular hydrogen gases, thermal ortho-para H2 mixture, para-H2, D2, and HD, adsorbing on a cold Cu(100) surface have different sticking coefficients. The relative sticking coefficients and the relative populations of ortho- and para-H2 on the surface, as estimated by EELS, can be understood on the basis of a trapping mechanism involving conversion of center-of-mass kinetic energy into rotational energy.

S. Andersson and J. Harris

1983-01-01T23:59:59.000Z

350

Thermal Energy Storage in Adsorbent Beds .  

E-Print Network [OSTI]

??Total produced energy in the world is mostly consumed as thermal energy which is used for space or water heating. Currently, more than 85% of… (more)

Ugur, Burcu

2013-01-01T23:59:59.000Z

351

Modulated reconnection rate and energy conversion at the magnetopause under steady IMF conditions  

E-Print Network [OSTI]

Modulated reconnection rate and energy conversion at the magnetopause under steady IMF conditions L conversion across the dayside high-latitude magnetopause. The energy conversion is estimated during eleven describe a new method to determine the reconnection rate from the magnitude of the local energy conversion

California at Berkeley, University of

352

Determination of Thermal-Degradation Rates of Some Candidate Rankine-Cycle Organic Working Fluids for Conversion of Industrial Waste Heat Into Power  

E-Print Network [OSTI]

DETERMINATION OF THERMAL-DEGRADATION RATES OF SOME CANDIDATE RANKINE-CYCLE ORGANIC WORKING FLUIDS FOR CONVERSION OF INDUSTRIAL WASTE HEAT INTO POWER Mohan L. Jain, Jack Demirgian, John L. Krazinski, and H. Bushby Argonne National Laboratory..., Argonne, Illinois Howard Mattes and John Purcell U.S. Department of Energy ABSTRACT Serious concerns over the long-term thermal In a previous study [1] based on systems stability of organic working fluids and its effect analysis and covering...

Jain, M. L.; Demirgian, J.; Krazinski, J. L.; Bushby, H.; Mattes, H.; Purcell, J.

1984-01-01T23:59:59.000Z

353

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

354

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

355

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network [OSTI]

of Thermal Energy Energy Sources o Solar Heat o Winter Coldusual Solar Energy System which uses only a heat source andsources and heat sinks not found anywhere else. Furthermore even where Solar energy

Authors, Various

2011-01-01T23:59:59.000Z

356

Silicon Microwire Arrays for Solar Energy-Conversion Applications  

Science Journals Connector (OSTI)

Silicon Microwire Arrays for Solar Energy-Conversion Applications ... The Si MW array geometry allows for efficient collection of photogenerated carriers from impure materials that have short minority-carrier diffusion lengths while simultaneously allowing for high optical absorption and high external quantum yields for charge-carrier collection. ...

Emily L. Warren; Harry A. Atwater; Nathan S. Lewis

2013-12-09T23:59:59.000Z

357

Synthesis and characterization of copper doped zinc oxide nanoparticles and its application in energy conversion  

Science Journals Connector (OSTI)

Abstract Solar cells, in general, perform under light source of solar influx, while the heat energy of solar radiation remains unutilized. Using an aqueous suspension of copper doped zinc oxide nanoparticles in specially-designed electrochemical cells we have observed significant voltage (maximum 632.0 mV) and storage duration (?47 h) upon thermal excitation. The cells exhibit reasonable energy conversion efficiency (maximum 1.36%). These cells generate voltage even at room temperature (?30 °C) and the voltage increases gradually with increasing temperature. When the platinum foil separating the two compartments of the electrochemical cell is replaced by a planar lipid membrane, all the parameters e.g., thermovoltage, storage capacity and the energy conversion efficiency increase significantly.

Poonam Bandyopadhyay; Anindita Dey; Ruma Basu; Sukhen Das; Papiya Nandy

2014-01-01T23:59:59.000Z

358

ENERGY & ENVIRONMENT DIVISION. ANNUAL REPORT FY 1980  

E-Print Network [OSTI]

Symposium on Solar Thermal Power and Energy Systems, Junein that the radiant solar-to-thermal energy conversion isto transfer thermal energy from the solar collector to a

Authors, Various

2010-01-01T23:59:59.000Z

359

Multiscale effects and capillary interactions in functional biomimetic surfaces for energy conversion and green engineering  

Science Journals Connector (OSTI)

...biomimetic surfaces for energy conversion and green engineering Michael Nosonovsky...discussed with the emphasis on energy and environmental (green) issues: new ways of...biomimetic surfaces for energy conversion and green engineering. | Biological...

2009-01-01T23:59:59.000Z

360

Simulating the physiology of athletes during endurance sports events: modelling human energy conversion and metabolism  

Science Journals Connector (OSTI)

...somewhat slower to save energy for later). The motivational factors are represented by the...events: modelling human energy conversion and metabolism. | The...computational model for energy conversion during bicycle racing...

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.


361

Proceedings of the sixth international conference on thermoelectric energy conversion  

SciTech Connect (OSTI)

This book presents the papers given at a conference on thermoelectric energy conversion. Topics considered at the conference included thermoelectric materials, the computer calculation of thermoelectric properties, the performance of crss-flow thermoelectric liquid coolers, thermoelectric cooler performance corrections for soft heat sinks, heat exchange in a thermoelectric cooling system, the optimal efficiency of a solar pond and thermoelectric generator system, and thermoelectric generation utilizing industrial waste heat as an energy source.

Rao, K.R.

1986-01-01T23:59:59.000Z

362

Phase-change thermal energy storage: Final subcontract report  

SciTech Connect (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

363

Engineering Molecular Transformations for Sustainable Energy Conversion  

SciTech Connect (OSTI)

Future strategies for sustainable energy production will undoubtedly require processes and materials that can efficiently convert renewable resources into fuels. Nature’s enzymes can exquisitely integrate highly active catalytic centers within flexible environments that can adaptively guide reactants to products with very high activities and selectivities. They are limited, however, by their stability and ability to integrate into large scale production processes. The design of more robust heterogeneous catalytic materials that mimic the performance of enzymes, however, has been hindered by our limited understanding of how such transformations proceed. The tremendous advances in ab initio quantum mechanical methods, atomistic simulations, and high performance computing that have occurred over the past two decades, however, provide unprecedented ability to track molecular transformations and how they proceed at specific sites and within particular environments. This information together with the advances in in situ spectroscopic methods that follow such transformations can begin to enable the design of atomic surface ensembles and nanoscale reaction environments. This paper provides the author’s perspective on how theory and simulation can be used to move from current onedimensional design efforts based on catalytic descriptors to the design of two-dimensional surfaces, threedimensional reaction environments, and proton-coupled electron transfer systems that mimic enzymes in the transformation of molecules.

Neurock, Matthew

2010-12-03T23:59:59.000Z

364

Russian arms conversion and its impact on the energy problem  

Science Journals Connector (OSTI)

Conversion of the Russian arms industry to civil production poses a key issue in the overall context of the problem of economic transformation. Its impact is enormous and bears upon the energy problem in several ways. If it succeeds the conversion will largely determine the nature of economic development in Russia and the CIS, influence the prospects of economic recovery in eastern Europe in a positive way, and play a substantial role in securing Russia's future place in the world economy. Because of the novel opportunities provided by market reforms, which generally increase production efficiency and enable profound structural changes towards the environmentally benign energy consumption, the consequences of arms conversion should be put under closer scrutiny. At the same time the possibility of using the idle capacity of arms industries to revamp the energy sector itself and to enhance the construction of modem infrastructures to run an efficient market economy deserves greater attention. Although great uncertainties exist when one attempts to assess the impact of arms conversion, nonetheless, new opportunities for Western investment and trade should be pointed out. Hence, one should highlight the problem as worthy of closer monitoring.

Vadim Nikolajew

1996-01-01T23:59:59.000Z

365

Solar?energy conversion at high solar intensities  

Science Journals Connector (OSTI)

The concentration of sunlight offers distinct advantages for solar–electrical generation either by thermal conversion or by photovoltaics. A large variety of concentration techniques are available with concentration ratios of 1–1000. Concentration is required for thermal conversion systems to attain the high temperatures needed for efficiencies in the desired range of about 25%–35%. The projected costs for some of the solar thermal systems (especially the central receiver and the fixed mirror) indicate that they could be economically competitive in the southwestern states. The southwest may be required for these high?concentration systems to overcome the main disadvantage of concentration which is the use of the direct component of sunlight only. Other concerns of high?intensity systems are in tracking requirements reflective surface accuracy and material lifetimes of both the reflecting and absorbing components. Selective surface absorbers will be required for systems with concentration ratios below a few hundred. The present high cost of solar?cell?generated electricity can be reduced considerably by using concentrators. Cells can be used with any of the concentrator designs and the major concern is keeping them at acceptable operating temperatures. Planar silicon cells vertical multijunction and gallium–aluminum–arsenide cells all look attractive for concentrating systems.

Charles E. Backus

1975-01-01T23:59:59.000Z

366

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

367

Contributions to Key Energy Conversion Technologies and Advanced Methods  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

368

Modeling Energy Recovery Using Thermoelectric Conversion Integrated with an Organic Rankine Bottoming Cycle  

SciTech Connect (OSTI)

Hot engine exhaust represents a resource that is often rejected to the environment without further utilization. This resource is most prevalent in the transportation sector, but stationary engine-generator systems also typically do not utilize this resource. Engine exhaust is a source of high grade thermal energy that can potentially be utilized by various approaches to produce electricity or to drive heating and cooling systems. This paper describes a model system that employs thermoelectric conversion as a topping cycle integrated with an organic Rankine bottoming cycle for waste heat utilization. This approach is being developed to fully utilize the thermal energy contained in hot exhaust streams. The model is composed of a high temperature heat exchanger which extracts thermal energy for driving the thermoelectric conversion elements. However, substantial sensible heat remains in the exhaust stream after emerging from the heat exchanger. The model incorporates a closely integrated bottoming cycle to utilize this remaining thermal energy in the exhaust stream. The model has many interacting parameters that define combined system quantities such as overall output power, efficiency, and total energy utilization factors. In addition, the model identifies a maximum power operating point for the system. That is, the model can identify the optimal amount of heat to remove from the exhaust flow to run through the thermoelectric elements. Removing too much or too little heat from the exhaust stream in this stage will reduce overall cycle performance. The model has been developed such that heat exchanger UAh values, thermal resistances, ZT values, and multiple thermoelectric elements can be investigated in the context of system operation. The model also has the ability to simultaneously determine the effect of each cycle design parameter on the performance of the overall system, thus giving the ability to utilize as much waste heat as possible. Key analysis results are presented showing the impact of critical design parameters on power output, system performance and inter-relationships between design parameters in governing performance.

Miller, Erik W.; Hendricks, Terry J.; Peterson, Richard B.

2009-07-01T23:59:59.000Z

369

Photopyroelectric deconvolution of bulk and surface optical-absorption and nonradiative energy conversion efficiency spectra in Ti:A1203 crystals  

E-Print Network [OSTI]

- mental scheme to obtain high-resolution spectra of the optical-to-thermal energy conversion efficiency for quantitatively. When dealing with relatively highly absorbing condensed phases, bulk absorptions usually dominate conversion efficiency spectra in Ti:A1203 crystals J. Vanniasinkam, A. Mandelis, and S. Buddhudu Photothermal

Mandelis, Andreas

370

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":""}]}

371

Thermal component of residuum conversion in two-stage coal liquefaction  

SciTech Connect (OSTI)

An experimental investigation was conducted to ascertain the contribution of thermal reactions to the conversion of residuum in the hydroprocessing reactor of two-stage liquefaction processes. Feedstocks prepared from residuum produced at the Wilsonville Advanced Coal Liquefaction Test Facility (ACLTF) and solvents produced by the catalytic hydrotreatment of solvent obtained from the Wilsonville ACLTF were reacted in the absence of a catalyst at temperatures ranging from 720/sup 0/F to 850/sup 0/F. Detailed characterization of the composite feedstock and product samples as well as of three fractions of each obtained by vacuum distillation was performed to ascertain the extent of residuum conversion, heteroatom removal, and hydrogen rearrangement. The results showed that hydrogenation of the solvent portion of the hydrotreater feedstock neither enhances residuum conversion nor results in the transfer of hydrogen to the residuum. Higher reaction temperatures enhanced the removal of sulfur but had little effect on other reactions. The results suggest that the conversion of residuum in the hydroprocessing reactor of two-stage liquefaction processes must occur catalytically rather than thermally. 10 refs., 1 fig., 30 tabs.

Stiegel, G.J.; Lett, R.G.; Cillo, D.L.; Mima, J.A.; Tischer, R.E.; Narain, N.K.

1985-06-01T23:59:59.000Z

372

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

as Organic Rankine Cycle (ORC) mahines, Sterling engines,Organic Rankine Cycle (ORC) system or Sterling Engine (SE)an organic Rankine cycle (ORC) system generates electricity

Lim, Hyuck

2011-01-01T23:59:59.000Z

373

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

374

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

1 1.1. Low Grade Heat (LGH) isvoltage (V) as a function of the LGH temperature (T): (a) Ptresults of the output voltage as a function of the LGH

Lim, Hyuck

2011-01-01T23:59:59.000Z

375

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network [OSTI]

Organic Rankine Cycle achieved by using Organic Rankine Cycle or Sterling Engines.technologies such as Organic Rankine Cycle (ORC) mahines,

Lim, Hyuck

2011-01-01T23:59:59.000Z

376

Meeting the Clean Energy Demand:? Nanostructure Architectures for Solar Energy Conversion  

Science Journals Connector (OSTI)

Meeting the Clean Energy Demand:? Nanostructure Architectures for Solar Energy Conversion ... This account further highlights some of the recent developments in these areas and points out the factors that limit the efficiency optimization. ...

Prashant V. Kamat

2007-02-01T23:59:59.000Z

377

Thermal and Economic Analyses of Energy Saving by Enclosing Gas Turbine Combustor Section  

E-Print Network [OSTI]

) thermography inspection indicated a high-temperature area (500~560°F) at the combustor section of the GE Frame 5 gas turbine of Dynegy Gas Processing Plant at Venice, Louisiana. To improve the thermal efficiency and reduce energy cost, thermal... within the natural gas industry, the Venice plant is seeking various means to reduce cost. As part of the project to improve the energy efficiency of the plant and thus reduce energy costs, Dynegy contracted the Energy Conversion & Conservation...

Li, X.; Wang, T.; Day, B.

2006-01-01T23:59:59.000Z

378

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

379

Project Profile: Sensible Heat, Direct, Dual-Media Thermal Energy...  

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

Sensible Heat, Direct, Dual-Media Thermal Energy Storage Module Acciona logo Acciona Solar, under the Thermal Storage FOA, plans to develop a prototype thermal energy storage...

380

NSF Workshop on Emerging Opportunities of Nanoscience to Energy Conversion and Storage  

E-Print Network [OSTI]

NSF Workshop on Emerging Opportunities of Nanoscience to Energy Conversion and Storage Download PDF: Nanoelectronics for Energy Conversion by Stuart Lindsay Section 6: BioNano Techniques for Energy Applications by T:NationalScienceFoundation(NSF)Sponsoredby:NationalScienceFoundation(NSF) #12;#12;NSF Workshop on Emerging Opportunities of Nanoscience to Energy Conversion and Storage Summary

Reif, John H.

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

Power Control and Optimization of Photovoltaic and Wind Energy Conversion Systems /  

E-Print Network [OSTI]

and Optimization of Photovoltaic and Wind Energy Conversionand Optimization of Photovoltaic and Wind Energy Conversionpower of Photovoltaic modules and Wind Energy Conversion

Ghaffari, Azad

2013-01-01T23:59:59.000Z

382

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

383

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

384

Direct Solar Energy Conversion by the Reduction of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

385

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

386

Energy Frontier Research Centers  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for Solid State Energy Conversion will focus on solid state conversion of thermal energy to useful electrical power, both to increase the efficiency of traditional...

387

WaveBob (TRL 5 6 System) - Advanced Wave Energy Conversion Project...  

Broader source: Energy.gov (indexed) [DOE]

WaveBob (TRL 5 6 System) - Advanced Wave Energy Conversion Project WaveBob (TRL 5 6 System) - Advanced Wave Energy Conversion Project WaveBob (TRL 5 6 System) - Advanced Wave...

388

Performance evaluation of thermal energy storage systems;.  

E-Print Network [OSTI]

??Solar thermal technologies are promising, given the fact that solar newlineenergy is the cheapest and most widely available of all renewable energy newlinetechnologies. The recent… (more)

Ramana A S

2014-01-01T23:59:59.000Z

389

Ocean Thermal Extractable Energy Visualization: Final Technical...  

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

Approved for public release; distribution is unlimited OCEAN THERMAL EXTRACTABLE ENERGY VISUALIZATION Award DE-EE0002664 October 28, 2012 Final Technical Report Prepared by...

390

Project Profile: Brayton Solar Power Conversion System  

Broader source: Energy.gov [DOE]

Brayton Energy, under the CSP R&D FOA, is looking to demonstrate the viability and economics of a new concentrating solar thermal power conversion system.

391

Technical and economic feasibility of a Thermal Gradient Utilization Cycle (TGUC) power plant  

E-Print Network [OSTI]

has grown in energy technologies that use renewable resources such as solar (thermal conversion, ocean thermal energy conversion, photovoltaics, wind and biomass conversion), geothermal and magnetohydrodynamics (MHD) . A new concept that can...

Raiji, Ashok

1980-01-01T23:59:59.000Z

392

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, JSe is shown to be a new material with attractive characteristics for solar energy conversion. PerformanceV at 300 K and it is thus close to the theoretical optimum for solar energy conversion. Since its transport

Boyer, Edmond

393

Optical, electrical, and solar energy-conversion properties of gallium arsenide nanowire-array  

E-Print Network [OSTI]

Optical, electrical, and solar energy-conversion properties of gallium arsenide nanowire, and will aid in the design and optimization of nanowire-based systems for solar energy-conversion applications, and the photoelectrochemical energy-conversion properties of GaAs nanowire arrays were evaluated in contact with one

Zhou, Chongwu

394

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos Jr.  

E-Print Network [OSTI]

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos to increase the efficiency of the devices dealing with energy conversion. The power supplies devices able and interleaved converters. This paper proposes an energy conversion unit constituted by a single-phase DC

Zhou, Yaoqi

395

Assistant, Associate or Full Professor (Mid-Career)(10-657) Energy Conversion Position in MAE  

E-Print Network [OSTI]

Assistant, Associate or Full Professor (Mid-Career)(10-657) Energy Conversion Position in MAE of Energy Conversion. We are particularly interested in novel computational, theoretical, and experimental, and biofuels. Excellent candidates in other areas of energy conversion will also be given full consideration

Gleeson, Joseph G.

396

Energy conversion at the Earth's magnetopause using single and multispacecraft methods  

E-Print Network [OSTI]

Energy conversion at the Earth's magnetopause using single and multispacecraft methods C. R a small statistical data set, where we investigate energy conversion at the magnetopause using Cluster density and magnetopause orientation are needed to infer the energy conversion at the magnetopause

Bergen, Universitetet i

397

A Framework for Reliability and Performance Assessment of Wind Energy Conversion Systems  

E-Print Network [OSTI]

1 A Framework for Reliability and Performance Assessment of Wind Energy Conversion Systems proposes a framework for reliability and dynamic performance assessment of wind energy conversion systems--Reliability, Dynamic Performance, Wind Power, Wind Energy Conversion System (WECS), Doubly-Fed Induction Generator

Liberzon, Daniel

398

January 2011: ME 533-Energy Conversion Dr. William M. Carey, Professor of Mechanical Engineering  

E-Print Network [OSTI]

January 2011: ME 533-Energy Conversion Dr. William M. Carey, Professor of Mechanical Engineering for the determination of the importance of energy conversion technologies. 2.) Provide a comprehensive understanding and Ideal Gas Mixtures. 3) Energy Conversion systems-Coal-Oil-Nuclear, Oceanic, Solar, Geothermal and Wind

399

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

E-Print Network [OSTI]

243 1 The State of the Art of Generators for Wind Energy Conversion Systems Y. Amirat, M. E. H. Benbouzid, B. Bensaker, R. Wamkeue and H. Mangel Abstract--Wind Energy Conversion Systems (WECS) have become. I. INTRODUCTION IND energy conversion is the fastest-growing source of new electric generation

Paris-Sud XI, Université de

400

Scaling the energy conversion rate from magnetic field reconnection to different bodies  

E-Print Network [OSTI]

Scaling the energy conversion rate from magnetic field reconnection to different bodies F. S. Mozer reconnection is often invoked to explain electromagnetic energy conversion in planetary magnetospheres, stellar in these bodies, it is important to understand energy conversion as a function of magnetic field strength

California at Berkeley, 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.


401

Energy conversion by autonomous regulation of chaos: Dynamical mechanism of loose coupling  

E-Print Network [OSTI]

Energy conversion by autonomous regulation of chaos: Dynamical mechanism of loose coupling Naoko by temporal three-body motion, is relevant to the energy conversion. © 2003 American Institute of Physics. DOI, the proposed mechanism is expected to be rather general and is applicable to other energy conversion problems

Kaneko, Kunihiko

402

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 variations. Index Terms--Wind energy conversion system, power generation control, sliding mode control

Boyer, Edmond

403

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

Boyer, Edmond

404

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

405

Journal of Power Sources 156 (2006) 677684 Thermodynamic analysis of electrokinetic energy conversion  

E-Print Network [OSTI]

is carried out for electrokinetic energy conversion. We demonstrate that the efficiencies depend solely Elsevier B.V. All rights reserved. Keywords: Electrokinetic energy conversion; Generator; Pump; Figure) are generated between the ends of the capillary, indicating a conversion of mechan- ical energy into electrical

Xuan, Xiangchun "Schwann"

406

2012: ME 533-Energy Conversion Dr. William M. Carey, Professor of Mechanical Engineering  

E-Print Network [OSTI]

2012: ME 533-Energy Conversion Dr. William M. Carey, Professor of Mechanical Engineering Office for the determination of the importance of energy conversion technologies. 2.) Provide a comprehensive understanding and Ideal Gas Mixtures. 3) Energy Conversion systems-Coal-Oil-Nuclear, Oceanic, Solar, Geothermal and Wind

407

Molecular approaches to solar energy conversion: the energetic cost of charge separation from molecular-excited states  

Science Journals Connector (OSTI)

...Can Li Molecular approaches to solar energy conversion: the energetic cost...light-absorbing materials for solar energy conversion, namely the separation...loss in limiting the efficiency of solar energy conversion by such devices is emphasized...

2013-01-01T23:59:59.000Z

408

A two-step photon-intermediate technique for the production of electricity, chemicals or lasers in nuclear energy conversion  

Science Journals Connector (OSTI)

The authors have developed an energy conversion concept, called Photon-Intermediate Direct Energy Conversion (PIDEC), that makes possible a two-step conversion of high grade nuclear energy (fission or fusion) to electricity or other useful high grade energy forms without intermediate thermalization. In PIDEC the nuclear fuel has a low average density, with local scale lengths significantly shorter than the range of the energetic nuclear reaction products. In the first step of the process, the nuclear energetic reaction product energy is transported to a fluorescer gas which converts it into photons. Then, in the second step of the process, the photons are transported out of the nuclear reactor to a medium which converts the photon energy to the desired product high grade energy form, such as electricity. We calculate that electricity can be produced, non-thermally, with an efficiency of up to 30%. With the addition of intermediate and bottoming thermal cycles, efficiency for electricity production could be as high as 70%, double that of conventional nuclear power plants. In addition to electric power, photolysis makes other product forms possible. These products include useful feedstock, or combustion chemicals, such as hydrogen and carbon monoxide, and excited molecular and atomic states, used for laser amplifiers or oscillators.

M.A. Prelas; F.P. Boody; E.J. Charlson; G.H. Miley

1990-01-01T23:59:59.000Z

409

ER100/PPC184/ER200/PPC284, Fall 2014 Energy Units & Conversions, Global Energy Use  

E-Print Network [OSTI]

1 ER100/PPC184/ER200/PPC284, Fall 2014 Energy Units & Conversions, Global Energy Use Problem Set #1 Total Points: 100 for ER110/PPC184; 120 for ER200/PPC284 Energy Units The purpose of these problems is to begin to get comfortable with the wide array of energy units used, and to gain experience in both doing

Kammen, Daniel M.

410

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 architecture to function as energy management system is presented. Index Terms-- integrated electric power

Lai, Hong-jian

411

Study of thermal conversion of naphthenic oils on the basis of analysis of their middle fractions  

SciTech Connect (OSTI)

The composition of the middle fractions of the thermal decomposition products of naphthenic oils obtained at 300, 350, and 400{degrees}C was studied. It was shown that the character of conversions of petroleum hydrocarbons is governed by the intensity of thermal treatment and by the chemical nature of the starting oil. The removal of aliphatic chains from high-boiling components of the petroleum at a temperature below 350{degrees}C results in the new formation of linear and isoprene alkanes in their middle fractions similarly to the catagenic transformations of oils in deposits. The rise in temperature up to 400{degrees}C enhances the destruction processes related to extension of the reactions of the homolytic cleavage of C-C bonds in aliphatic chains. This results in practically complete destruction of isoprene alkanes and in predominance of low-molecular homologs among the linear alkanes. On the basis of the results obtained it can be supposed that the thermal treatment is an important factor in the conversion of naphthenic oils into paraffin oils. 10 refs., 2 figs., 3 tabs.

Kayukova, G.P.; Kurbskii, G.P.; Mutalapova, R.I. [A.E. Arbuzov Inst. of Organic and Physical Chemistry, Kazan (Russian Federation)] [and others

1994-05-10T23:59:59.000Z

412

Energy transfer up-conversion in Tm3+ -doped silica fibre  

E-Print Network [OSTI]

1 Energy transfer up-conversion in Tm3+ - doped silica fibre D. A. Simpson, G. W. Baxter and S. F responsible for the up-conversion: excited state absorption and energy transfer up-conversion. The decay equations, the energy transfer up- conversion process (3 F4,3 F43 H4,3 H6) is established at Tm2O3

Paris-Sud XI, Université de

413

Continuous optical discharge in a thermionic converter for conversion of laser radiation energy into electrical energy  

Science Journals Connector (OSTI)

A model is developed and calculations are made of the characteristics of a continuous optical discharge in the interelectrode gap of a thermionic converter for conversion of laser radiation energy into electrical

I. V. Alekseeva; A. P. Budnik; V. A. Zherebtsov…

1999-04-01T23:59:59.000Z

414

Left Coast Electric Formerly Left Coast Conversions | Open Energy...  

Open Energy Info (EERE)

Left Coast Electric Formerly Left Coast Conversions Jump to: navigation, search Name: Left Coast Electric (Formerly Left Coast Conversions) Place: California Sector: Services...

415

Golden Fuel Systems formerly Greasel Conversions Inc | Open Energy...  

Open Energy Info (EERE)

Golden Fuel Systems formerly Greasel Conversions Inc Jump to: navigation, search Name: Golden Fuel Systems (formerly Greasel Conversions Inc) Place: Drury, Montana Zip: 65638...

416

Penrose Landfill Gas Conversion LLC | Open Energy Information  

Open Energy Info (EERE)

Penrose Landfill Gas Conversion LLC Place: Los Angeles, California Product: Owner of landfill gas plant. References: Penrose Landfill Gas Conversion LLC1 This article is a stub....

417

Influencing factors on NOX emission level during grate conversion of three pelletized energy crops  

Science Journals Connector (OSTI)

Abstract NOX emission behavior of three different pelletized energy crops, a herbaceous one, Brassica carinata, a short rotation coppice, Populus sp., and a blend of them, was assessed during fixed grate conversion. Measurements of NOX emissions were done at combustion conditions that yielded both thermal efficiency and CO emissions according to the European norm (EN 303-5:2012), and results compared to limits established by the Austrian deviations. Based on the experimental data, NOX results fulfilled the Austrian restrictions except during combustion of brassica, which exhibited the highest Fuel-N content. The Fuel-NOX was identified as the main formation mechanism. An opposite relation was determined between the specific NOX emissions and the Fuel-N conversion ratio obtained between the N-rich and the N-lean fuels tested here. The influence of the air supply (amount and distribution) on the NOX formation was also noticeable. In general, a higher proportion of air increased the specific NOX emissions and the Fuel-N conversion ratio. Possibilities to control the NOX emissions level by air staging were rather limited, particularly, during combustion of brassica and the blend because of their peculiarities as ash-rich fuels with high slag formation risk. For attaining an appropriate conversion of these fuels, primary air requirements substantially increased. Due to limitations found during the energy crops conversion, efforts to minimize the level of NOX emissions identified here for the troublesome fuels tested should be mainly focused on attaining both a properly designed air supply system and the grate temperature control as well as on conditioning the Fuel-N content, for instance, by blending.

Maryori Díaz-Ramírez; Fernando Sebastián; Javier Royo; Adeline Rezeau

2014-01-01T23:59:59.000Z

418

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion -  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

419

Optimal energy-preserving conversions of quantum coherence  

E-Print Network [OSTI]

Given two coherent superpositions of energy eigenstates, we search for the best evolution that converts one superposition into the other without exchanging energy with the surrounding environment. We consider both deterministic and probabilistic evolutions, which can be obtained by measuring the environment and postselecting a subset of the outcomes. For every fixed value of the postselection probability, we characterize the process that maximizes the fidelity of the output state with the target, showing that the optimal measurement can be chosen without loss of generality to be binary and pure. We then construct a recursive protocol, which allows one to increase the success probability while reaching maximum fidelity at each step of the iteration. In turn, the recursive protocol is used to generate efficient approximations of the optimal fidelity-probability tradeoff, via a technique dubbed coherent coarse-graining. Such a technique can be applied not only to energy-preserving conversions, but also to general conversions of pure states under linear constraints. The recursive protocol and its coherent coarse-graining are illustrated in a series of applications to phase estimation, quantum cloning, coherent state amplification, and ancilla-driven computation.

Yuxiang Yang; Giulio Chiribella

2015-02-01T23:59:59.000Z

420

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

SciTech Connect (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

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

Conference Chair: Dr. Matthew Mench Condra Chair of Excellence in Energy Conversion & Storage  

E-Print Network [OSTI]

Conference Chair: Dr. Matthew Mench Condra Chair of Excellence in Energy Conversion & Storage Dept Electrochemical Energy Storage and Conversion Forum April 19-20 Knoxville, Tennessee Proudly sponsored by: The National Science Foundation Great Lakes Fuel Cell Education Partnership and Tennessee Solar Conversion

Tennessee, University of

422

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Award, the Eni Italgas Prize for Energy and Environment, the Rank Prize for Optoelectronics, the Wilson Prize, the Coblentz Award for Advances in Molecular Spectroscopy, the...

423

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

writing Malvern Nano Zetasizer AJA e-beam evaporator DOE Center facilities National Energy Research Scientific Computing Center (NERSC) National Center for Electron Microscopy...

424

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Eli Yablonovitch RG-1 Leader Eli Yablonovitch, Director of the NSF Center for Energy Efficient Electronics Science (E 3S) Lawrence Berkeley National Laboratory John A....

425

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collaborator Albert Polman are awarded the Eni Award in Renewable and Nonconventional Energy Harry A. Atwater, Jr., Howard Hughes Professor and Professor of Applied Physics and...

426

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

research interests center around two interwoven research themes: photovoltaics and solar energy; and plasmonics and optical metamaterials. Atwater and his group have been active...

427

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

event details 02.06.13 logo Redefining the Limits of Photovoltaic Efficiency The LMI Energy Frontier Research Center, along with the Resnick Sustainability Institute, is...

428

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Eli Yablonovitch RG-1 Leader Eli Yablonovitch, Director of the NSF Center for Energy Efficient Electronics Science (E 3S) Lawrence Berkeley National Laboratory Xiang Zhang...

429

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

430

Thermal Energy Storage for Vacuum Precoolers  

E-Print Network [OSTI]

radically creating high peak demands and low load factors. An ice bank thermal energy storage (TES) and ice water vapor condenser were installed. The existing equipment and TES system were computer monitored to determine energy consumption and potential... efficiency at night. The ice bank thermal energy storage system has a 4.4 year simple payback. While building ice, the refrigeration system operated at a 6.26 Coefficient of Performance (COP). The refrigeration system operated more efficiently at night...

Nugent, D. M.

431

Proceedings of the Chornobyl phytoremediation and biomass energy conversion workshop  

SciTech Connect (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

432

Plasmadynamics and ionization kinetics of thermionic energy conversion  

SciTech Connect (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

433

Wave Energy Resource Analysis for Use in Wave Energy Conversion  

E-Print Network [OSTI]

In order to predict the response of wave energy converters an accurate representation of the wave climate resource is crucial. This paper gives an overview of wave resource modeling techniques as well as detailing a methodology for estimating...

Pastor, J.; Liu, Y.; Dou, Y.

2014-01-01T23:59:59.000Z

434

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Light Matters Video The LMI-EFRC Video "Light Matters" was the winner of the "Life at the Frontiers of Energy Research" video contest for striking photography and visual impact....

435

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

July 18. Our submission captures the essence of what the LMI-EFRC is about: controlling light to make the most energy from the sun Many thanks to those who contributed to our...

436

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

437

Energy content of macrobenthic invertebrates: general conversion factors from weight to energy  

Science Journals Connector (OSTI)

In ecological studies, especially in those dealing with energy circulation in nature, determinations of the energy content of organisms are inevitable. Energy determinations are, however, laborious and time-consuming. Average conversion factors based on different species form various areas and seasons may often be a shortcut for overcoming this problem. To establish general energy conversion factors for aquatic invertebrate groups, we used 376 values of J · mg?1 DW and 255 values of J · mg?1 AFDW, representing 308 and 229 species, respectively. The dry-weight-to-energy factors were highly variable both within and between taxonomic groups, e.g.: Porifera, 6.1 J · mg?1 DW; insect larvae, 22.4 J · mg?1 DW (median values). The energy-conversion factors related to AFDW showed a much smaller dispersion with a minimum median value of 19.7 J · mg?1 AFDW (Ascidiacea) and a maximum of 23.8 J · mg?1 AFDW (insect larvae). Within taxonomic groups, the 95% confidence intervals (AFDW) were only a few percent of the median values. The use of energy-conversion factors based on AFDW is preferable due to their lower dispersion. For aquatic macrobenthic invertebrates, a general conversion factor of 23 J · mg?1 AFDW can be used.

Thomas Brey; Heye Rumohr; Sven Ankar

1988-01-01T23:59:59.000Z

438

Thermally-Activated Technologies | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

439

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

440

Assessing the Power Generation Solution by Thermal-chemical Conversion of Meat Processing Industry Waste  

Science Journals Connector (OSTI)

Abstract The paper presents a waste to energy conversion solution using a pyro-air-gasification process applied to biodegradable residues from meat processing industry integrated with small scale thermodynamic cycle for power generation. The solution of air- gasification at atmospheric pressure is based on experimental research and engineering computation developed during the study. The input data, such as: waste chemical composition, low/high heating value and proximate analysis, correspond to real waste products, sampled directly from the industrial processing line. Separate drying as first stage pre-treatment and integrated partial drying inside the reactor was used. The syngas low heating value of about 4.3 MJ/Nm3 is insured by its combustible fraction (H2– 12.2%, CO – 19.2%, CH4 – 1.6%). According to syngas composition the thermodynamic cycle was chosen – Otto gas engine. For a given waste feed-in flow considered in our computation of about 110 kg/h the power output obtained is about 50 kWel. The global energy efficiency of the unit is about 15%. The results offer answers to energy recovery waste disposal for residues with characteristics that are not suitable for classic incineration or limit the energy efficiency of the process making it non-economical (the average humidity of the raw waste is about 42% in mass). The research focused on waste to energy conversion process energy efficiency, waste neutralization and power generation.

Cosmin Marculescu; Florin Alexe

2014-01-01T23:59:59.000Z

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

Thermal Insulation for Energy Conservation  

Science Journals Connector (OSTI)

The use of thermal insulations to reduce heat flow across the building ... decades. Materials available for use as building insulation include naturally occurring fibers and particles, man ... plastics, evacuated...

Dr. David W. Yarbrough Ph.D.; PE

2012-01-01T23:59:59.000Z

442

The use of solar energy can enhance the conversion of carbon dioxide into energy-rich products: stepping towards artificial photosynthesis  

Science Journals Connector (OSTI)

...considered as a H2 carrier as equation...pressure) with energy recovery...16]. The conversion of methanol...Catalysis for Energy: New Challenges...2006 Solar conversion efficiency...cells with carrier multiplication...of solar energy conversion technologies...

2013-01-01T23:59:59.000Z

443

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

444

39610 Energy Conversion & Supply (6) 39611 Energy Demand &Utilization (6)  

E-Print Network [OSTI]

. Energy & Environment (12) 19740 (24740) Combustion & Air Pollution Cntrl (12) 19612 Int. Life Cycle:20 12711 Adv. Project Management for Construction (12) 12742 Data Mining in Infrastructure (6) 12750 Infrastructure Systems (12) 12651/751 Air Quality Engr. (9/12) TR10:3011:50/NA 12740 Data Acq

McGaughey, Alan

445

39610 Energy Conversion & Supply (6) 39611 Energy Demand &Utilization (6)  

E-Print Network [OSTI]

() 19740 (24740) Comb. & Air Pollution Ctrl 19612 Int. Life Cycle Assessment (12) 19739 (18875) Econ& Engr Combustion & Air Pollution (12) 24642 Fuel Cell Systems (12)MW9:3011:20 24643 S.T. Electrochem. Energy Course (18) 12711 Adv. Project Management for Construction (12) 12742 Data Mining

McGaughey, Alan

446

Project Profile: Innovative Thermal Energy Storage for Baseload...  

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

Thermal Energy Storage for Baseload Solar Power Generation Project Profile: Innovative Thermal Energy Storage for Baseload Solar Power Generation University of South Florida logo...

447

Project Profile: Innovative Phase Change Thermal Energy Storage...  

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

Phase Change Thermal Energy Storage Solution for Baseload Power Project Profile: Innovative Phase Change Thermal Energy Storage Solution for Baseload Power Infinia logo Infinia,...

448

Ocean Thermal Extractable Energy Visualization: Final Technical Report  

Broader source: Energy.gov [DOE]

Report about the Ocean Thermal Extractable Energy Visualization project, which focuses on assessing the Maximum Practicably Extractable Energy from the world’s ocean thermal resources.

449

Project Profile: Reducing the Cost of Thermal Energy Storage...  

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

Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants Project Profile: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power...

450

Project Profile: Novel Molten Salts Thermal Energy Storage for...  

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

Novel Molten Salts Thermal Energy Storage for Concentrating Solar Power Generation Project Profile: Novel Molten Salts Thermal Energy Storage for Concentrating Solar Power...

451

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

452

Advanced Optical Materials for Energy Efficiency and Solar Conversion  

Science Journals Connector (OSTI)

Optical materials and coatings play an important role in determining the efficiency of solar conversion processes. At present the best known ... . Since they are of significant consequence to solar conversion and...

Carl M. Lampert

1987-01-01T23:59:59.000Z

453

ENERGY EFFICIENT BUILDING DESIGN AND THERMAL ENERGY STORAGE  

Science Journals Connector (OSTI)

This chapter discusses the potential for cost-effectively reducing the energy intensity of office buildings by applying proven technologies, especially the use of ground source systems with thermal energy stor...

Edward Morofsky

2007-01-01T23:59:59.000Z

454

Wave Energy Conversion Overview and it's Renewable Energy Potential for the Oil and Gas Industry  

E-Print Network [OSTI]

Ocean energy conversion has been of interest for many years. Recent developments such as concern over global warming have renewed interest in the topic. Part II provides an overview of the energy density found in ocean waves and how it is calculated...

Pastor, J.; Liu, Y.; Dou, Y.

2014-01-01T23:59:59.000Z

455

Photochemical Conversion of Solar Energy into Electrical Energy in an Eosin–Mannose System  

Science Journals Connector (OSTI)

Solar energy has been converted into electrical energy using an eosin–mannose system in a ... and 67.20 ?W, respectively. The observed conversion efficiency was 0.6461% and the fill factor was 0.3739 against an a...

Mukesh Kumar Bhimwal; K. M. Gangotri

2012-01-01T23:59:59.000Z

456

Solar Thermal Incentive Program | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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)

457

Solar Thermal Incentive Program | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

458

Argonne Chemical Sciences & Engineering - Catalysis & Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

459

Siting handbook for small wind energy conversion systems  

SciTech Connect (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

460

Plasmadynamics and ionization kinetics of thermionic energy conversion  

SciTech Connect (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. The effects of the complete system of electron-atom inelastic collisions on the ionization-recombination problem are shown to reduce to a system nearly as simple as the well-known one-quantum approximation. To combine the above analysis of ionization-recombination kinetics with the plasma dynamics of thermionic conversion, a finite difference computer program is constructed. Using the above developments, 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.

Lawless, J.L. Jr.

1981-01-01T23:59:59.000Z

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.


461

Storage of Solar Thermal Energy  

Science Journals Connector (OSTI)

It is estimated that, at the present rate of consumption of (readily available stored energy in) fossil fuels, the world’s ... world are in search of new and renewable energy sources. Developing efficient and ine...

S. Kakaç; E. Paykoç; Y. Yener

1989-01-01T23:59:59.000Z

462

A Unified Framework for Reliability Assessment of Wind Energy Conversion Systems  

E-Print Network [OSTI]

1 A Unified Framework for Reliability Assessment of Wind Energy Conversion Systems Sebastian S a framework for assessing wind energy conversion systems (WECS) reliability in the face of external based on wind energy are: the impact of wind speed variability on system reliability [1]; WECS' reaction

Liberzon, Daniel

463

Abstract: Wind Energy Conversion Systems (WECS) produce fluctuating output power, which may cause voltage fluctuations and  

E-Print Network [OSTI]

Abstract: Wind Energy Conversion Systems (WECS) produce fluctuating output power, which may cause, solar energy conversion, virtual test bed simulation. Preprint Order Number: PE-531EC (02- plying its market-clearing mechanism. This mechanism determines the accepted and unaccepted energy bids

Gross, George

464

DOI: 10.1002/cssc.200800087 Oriented Nanostructures for Energy Conversion and  

E-Print Network [OSTI]

DOI: 10.1002/cssc.200800087 Oriented Nanostructures for Energy Conversion and Storage Jun Liu, poor charge-carrier mobilities and narrow absorption in current semiconductors limit the energy-conversionSusChem 2008, 1, 676 ­ 697 #12;1. Introduction The tremendous challenges in energy and natural resources

Cao, Guozhong

465

Nanoscale Triboelectric-Effect-Enabled Energy Conversion for Sustainably Powering Portable Electronics  

E-Print Network [OSTI]

Nanoscale Triboelectric-Effect-Enabled Energy Conversion for Sustainably Powering Portable , and 128 mW/cm3 , respectively, and an energy conversion efficiency as high as 10-39% has been demonstrated: Harvesting energy from our living environment is an effective approach for sustainable, maintenance

Wang, Zhong L.

466

THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK  

E-Print Network [OSTI]

97505 THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK 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

467

Volume 28A, number 2 PHYSICS LETTERS 4 November 1968 HIGH ENERGY K CONVERSION COEFFICIENTS  

E-Print Network [OSTI]

Volume 28A, number 2 PHYSICS LETTERS 4 November 1968 HIGH ENERGY K CONVERSION COEFFICIENTS C. 0V) Fig. 1. Theoretical values for K conversion coefficients for 2 = 48. gamma-ray transition energies 1 and Astronomy: Louisiana State University, Baton Rouge, Louisiana. USA Received 21 September 1968 High energy K

O'Connell, Robert F.

468

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

469

Designing New Alloys to be Used in New Energy Conversion Technologies  

ScienceCinema (OSTI)

Dr. Omer Dogan of NETL Albany discusses using computer simulation and modeling to design new alloys to be used in new energy conversion technologies.

Dr. Omer Dogan

2010-09-01T23:59:59.000Z

470

E-Print Network 3.0 - advanced energy conversion Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ENERGY Biomass Fuel Cell Battery Photovoltaic Stationary... Power A123 SYSTEMS BioGas Biomass Conversion Drying Zone ... Source: Choate, Paul M. - Department of Entomology...

471

One- and Two-Phase Conversion of Biomass to Furfural - Energy...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

One- and Two-Phase Conversion of Biomass to Furfural Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing SummaryExploiting the energy...

472

Conversion efficiency of broad-band rectennas for solar energy harvesting applications  

Science Journals Connector (OSTI)

Optical antennas have been proposed as an alternative option for solar energy harvesting. In this work the power conversion efficiency of broadband antennas, log-periodic,...

Briones, Edgar; Alda, Javier; González, Francisco Javier

2013-01-01T23:59:59.000Z

473

Divergent–rotational Nonlinear Energy Conversions in Wavenumber–frequency Domain During Summer Monsoon  

Science Journals Connector (OSTI)

...—This work deals with computational modelling designed to understand the dynamical mechanism of low frequency monsoonal transients that results from nonlinear divergent–rotational (?-?) kinetic energy (KE) conversions

D. R. Chakraborty; N. K. Agarwal

2000-10-01T23:59:59.000Z

474

Energy conversions and storage caused by an unsteady poloidal flow in active solar regions  

Science Journals Connector (OSTI)

In this paper we discuss coupling processes between a magnetic field and an unsteady plasma motion, and analyze the features of energy storage and conversions in active region.

Zhongyuan Li; W. R. Hu

475

Solar Energy Conversion Processes in Nanostructured Materials Studied via Time-Resolved THz Spectroscopy  

Science Journals Connector (OSTI)

We discuss time-resolved THz spectroscopy measurements for three important solar energy conversion approaches; (1) electronically coupled semiconductor nanocrystals, (2) a bulk...

Beard, Matt; Blackburn, Jeffery; Heben, Michael; Ai, Xin; Rumbles, Garry; Ellingson, Randy J; Nozik, Arthur J

476

Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013  

SciTech Connect (OSTI)

The Symposium on the Physical Chemistry of Solar Energy Conversion at the Fall ACS Meeting in Indianapolis, IN (Sept. 8-12) featured the following sessions (approx. 6 speakers per session): (1) Quantum Dots and Nanorods for Solar Energy Conversion (2 half-day sessions); (2) Artificial Photosynthesis: Water Oxidation; (3) Artificial Photosynthesis: Solar Fuels (2 half-day sessions); (4) Organic Solar Cells; (5) Novel Concepts for Solar Energy Conversion (2 half-day sessions); (6) Emerging Techniques for Solar Energy Conversion; (7) Interfacial Electron Transfer

Lian, Tianquan [PI, Emory Univ.

2013-09-01T23:59:59.000Z

477

C3Bio.org - Resources: NIFA - Carbon and Energy Efficient Conversion...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Presentations NIFA - Carbon and Energy Efficient Conversion of Biomass to Biofuels About 0 review(s) (Review this) Share: ... Share this resource: Facebook Twitter...

478

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

E-Print Network [OSTI]

Solar thermal energy collection is an exciting technology for the replacement of non-renewable energy production.

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

479

Permanent magnet thermal energy system  

SciTech Connect (OSTI)

An improved rotary magnet thermal generator system of the type having an array of magnets in alternating disposition coaxially disposed about and parallel with the shaft of a motor driving the rotary array and having a copper heat absorber and a ferro-magnetic plate fixed on a face of the heat absorber, includes as efficiency improver a plurality of heat sink plates extending beyond the ferro-magnet plate into a plenum through a respective plurality of close-fitting apertures. In a further embodimetn the heat sink plates are in thermal contact with sinusoidally convoluted tubing that both increases surface area and provides for optional heating of gases and/or fluids at the same time.

Gerard, F.

1985-04-16T23:59:59.000Z

480

Utilizing Solar Thermal Energy in Textile Processing Units  

Science Journals Connector (OSTI)

This chapter presents the prospects of solar thermal energy utilization in the textile processing units in Pakistan. Various solar thermal technologies suitable for thermal energy production and their application...

Asad Mahmood; Khanji Harijan

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.


481

"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

482

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

483

Semi-flexible bimetal-based thermal energy harvesters  

Science Journals Connector (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-step 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®. 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 13.46 ?W per device were reached on a hot source at 60?°C with 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@3 V). At the end, 10 ?W of directly usable output power were reached with 3 devices, which is compatible with wireless sensor network powering applications.

S Boisseau; G Despesse; S Monfray; O Puscasu; T Skotnicki

2013-01-01T23:59:59.000Z

484

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

SciTech Connect (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

485

Chemical-looping combustion -- Efficient conversion of chemical energy in fuels into work  

SciTech Connect (OSTI)

In thermal power plants, a large amount of the useful energy in the fuel is destroyed during the combustion process. This paper presents theoretical thermodynamic studies of a new system to increase the energy conversion efficiency of chemical energy in fuels into work. The system includes a gas turbine system with chemical-looping combustion where a metal oxide is used as an oxygen carrier. Instead of conventional combustion, the oxidation of the fuel is carried out in a two-step reaction. The first reaction step is an exothermic oxidation of a metal with air and the second reaction step an endothermic oxidation of the fuel with the metal oxide from the first step. The low grade heat in the exhaust gas is used to drive the endothermic reaction. This two-step reaction has proven to be one way to increase the energy utilization compared to conventional combustion. Results for a gas turbine reheat cycle with methane as a fuel and NiO as an oxygen carrier show that the gain in net power efficiency for the chemical-looping combustion system is as high as 5 percentage points compared to a similar conventional gas turbine system. An exergy analysis of the reactions shows that less irreversibilities are generated with chemical looping combustion than with conventional combustion. Another advantage with chemical-looping combustion is that the greenhouse gas CO{sub 2} is separated from the other exhaust gases without decreasing the overall-system thermal efficiency. This is an important feature since future regulations of CO{sub 2} emission are likely to be strict. Today, most of the suggested CO{sub 2} separation methods are considered to reduce the thermal efficiency at least 5--10 percentage points and to require expensive equipment.

Anheden, M.; Naesholm, A.S.; Svedberg, G. [Royal Inst. of Technology, Stockholm (Sweden)

1995-12-31T23:59:59.000Z

486

A thermochemical study of ceria: exploiting an old material for new modes of energy conversion and CO2 mitigation  

Science Journals Connector (OSTI)

...partial molar free energy of lattice oxygen...solar-to-fuel conversion efficiency, which...the mobilities on carrier concentrations...J. Hydrogen Energy 31 5561( doi...for new modes of energy conversion and CO2 mitigation...

2010-01-01T23:59:59.000Z

487

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

stored on the platform and these two chemicals will explodeChemical Categories Nutrients Dissolved Oxygen Biological Categories Phyto- plankton Zooplankton lchthyo- plankton Micro- nekton Nekton Hammals, Birds Benthos Issue Platform

Sullivan, S.M.

2014-01-01T23:59:59.000Z

488

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

stored on the platform and these two chemicals will explodeplatform continuously releases chlorine along with its discharge waters at a concentration of 0.1 mg liter . Chemical

Sullivan, S.M.

2014-01-01T23:59:59.000Z

489

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

stored on the platform and these two chemicals explode whenhandling chemical contaminants on OTEC platforms. The Coastof chemicals or processes used on OTEC platforms, there is a

Sands, M. D.

2011-01-01T23:59:59.000Z

490

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

delivered to the local power grid either directly (for Land-Oahu, Hawaii) • • • • Electrical Power Grid for Oahu,Hawaii Electrical Power Grid for Key West, Florida ••

Sullivan, S.M.

2014-01-01T23:59:59.000Z

491

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

Oahu, Hawaii) • . • • . Electrical Power Grid for Oahu,Hawaii • • • Electrical Power Grid for Key West,Florida • • . • . . Electrical Power Grid for Puerto

Sullivan, S.M.

2014-01-01T23:59:59.000Z

492

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

Occupational Safety and Health Administration (OSHA) safety, and the Coast Guard covers mar1ne covers some offshore

Sands, M. D.

2011-01-01T23:59:59.000Z

493

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

SciTech Connect (OSTI)

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

494

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

50 ing a turning basin in the bight. (See Notice to Marinersbasin to a basin in the SW part of the bight. In 1972. theturning basin just in- side the entrance of Garrison Bight.

Sullivan, S.M.

2014-01-01T23:59:59.000Z

495

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

upper turning basin off Key West Bight, and then 12 feet toso ing a turnmg basin in the bight. (See Nutice to :V1annersbasin to a basin in the SW part of the bight. ln 197 2. the

Sullivan, S.M.

2014-01-01T23:59:59.000Z

496

ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

la. Supplies and repairs. - Bunker C. die-,el oib. and wateragricultur- Supplies. -No bunkers are available; in emergen·3, Vessel Arrival In- cies bunkers and lube oils may be

Sullivan, S.M.

2014-01-01T23:59:59.000Z

497

DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS  

E-Print Network [OSTI]

de Ratones. Supplies. -No bunkers are available; in emergen-and agricultur· cies bunkers and lube oils may be deliveredr'..:w h'>urs. Fr..:shwater. bunker C otl. and dtesd oil are

Sullivan, S.M.

2014-01-01T23:59:59.000Z

498

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network [OSTI]

aspects of siting OTEC plants offshore the United States ongas. phosgene Offshore ammonia plant-ships will presentan facility offshore may expose the plant to power outages

Sands, M. D.

2011-01-01T23:59:59.000Z

499

Facilities - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facilities CSTEC investigators will have access to high-tech facilities located at the University of Michigan. Center for Ultrafast Optics (CUOS) The Center for Ultrafast Optical...

500

Advisory Board - Center for Solar and Thermal Energy Conversion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Advisory Board Dr. Sheila G. Bailey Senior Physicist at NASA Glenn Research Center Dr. David J. Eaglesham CEO at Pellion Technologies Dr. Alex Jen (website) BoeingJohnson...