National Library of Energy BETA

Sample records for thermal-to-electrical energy conversion

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

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

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

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

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

    Skutterudite-Based Thermoelectric Modules | Department of Energy Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Evaluation of Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Discusses progress toward the fabrication of a skutterudite-based TE module and provides module performance data under operating conditions similar to those for automotive applications deer11_salvador.pdf (2.68

  3. Thermal to Electrical Energy Conversion of Skutterudite-Based Thermoelectric Modules

    SciTech Connect (OSTI)

    Salvador, James R.; Cho, Jung Y; Ye, Zuxin; Moczygemba, Joshua E.; Thompson, Alan; Sharp, Jeff W.; Konig, Jan; Maloney, Ryan; Thompson, Travis; Sakamoto, Jeff; Wang, Hsin; Wereszczak, Andrew A; Meisner, G P

    2013-01-01

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

  4. Thermal to electricity conversion using thermal magnetic properties

    DOE Patents [OSTI]

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

    2010-04-27

    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.

  5. Ocean thermal energy conversion

    SciTech Connect (OSTI)

    Avery, W.H.

    1983-03-17

    A brief explanation of the Ocean Thermal Energy Conversion (OTEC) concept and an estimate of the amount of energy that can be produced from the ocean resource without introducing environmental concerns are presented. Use of the OTEC system to generate electric power and products which can replace fossil fuels is shown. The OTEC program status and its prospects for the future are discussed.

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

    SciTech Connect (OSTI)

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

    2012-01-01

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

  7. Wind energy conversion system

    DOE Patents [OSTI]

    Longrigg, Paul

    1987-01-01

    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.

  8. Energy conversion system

    DOE Patents [OSTI]

    Murphy, Lawrence M.

    1987-01-01

    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.

  9. Energy conversion system

    DOE Patents [OSTI]

    Murphy, L.M.

    1985-09-16

    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.

  10. Conversion Factsheet | Department of Energy

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

    Conversion Factsheet Conversion Factsheet To efficiently convert algae, diverse types of cellulosic biomass, and emerging feedstocks into renewable fuels, the U.S. Department of Energy (DOE) supports research, development, and demonstration of technologies. This research will help ensure that these renewable fuels are compatible with today's vehicles and infrastructure. conversion_factsheet.pdf (286.98 KB) More Documents & Publications 2013 Peer Review Presnentations-Plenaries Thermochemical

  11. Energy Conversion Devices | Open Energy Information

    Open Energy Info (EERE)

    Type Test & Evaluation Partner Partnering Center within NREL National Center for Photovoltaics Partnership Year 2003 Energy Conversion Devices is a company located in Rochester...

  12. Energy Conversion Efficiency

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

    Blog Energy Blog RSS August 29, 2016 Energy Secretary Ernest Moniz takes a slap shot at Boston College's Conte Forum to promote green sports arenas. | Photo by Simon Edelman, Energy Department. Game On: DOE Initiative Supports Leadership in Sports Venues DOE and its partners released the Survey on Energy and Water Efficiency of Stadiums and Arenas for sports venue owners and operators regarding their facilities' energy and water usage. August 29, 2016 The World's Largest 3D Printed Object Oak

  13. thermal energy power conversion

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

    National Solar Thermal Test Facility Nuclear ... Climate & Earth Systems Climate Measurement & Modeling ... Tribal Energy Program Intellectual Property Current EC ...

  14. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...

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

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

  15. Ocean thermal energy conversion (OTEC)

    SciTech Connect (OSTI)

    Lockerby, R.W.

    1981-01-01

    Ocean thermal energy conversion (OTEC) is reviewed briefly. The two types of OTEC system (open and closed) are described and limitations are pointed out. A bibliography of 148 references on OTEC is given for the time period 1975 to 1980. Entries are arranged alphabetically according to the author's name. (MJJ)

  16. Global Waste to Energy Conversion Company GWECC | Open Energy...

    Open Energy Info (EERE)

    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...

  17. SCE Societe de Conversion d Energie | Open Energy Information

    Open Energy Info (EERE)

    Societe de Conversion d Energie Jump to: navigation, search Name: SCE Societe de Conversion d'Energie Place: Reunion Island, France Product: PV project developer on Reunion Island,...

  18. Energy Conversion, an Energy Frontier Research

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

    Director's Letter .................. 2 Research ............................. 3 Seminar Series ................. 11 Awards .............................. 12 S p r I N g 2 0 1 1 Intermediate Band Solar Energy Conversion in ZnTe:O and ZnTe/ZnSe Affordable photovoltaic solar cells are highly desirable for achieving a sustainable and renewable energy source. In order for solar energy to become cost-competitive with fossil fuels, technological breakthroughs are needed to both improve solar cell

  19. Biochemical Conversion | Department of Energy

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

    Conversion Biochemical Conversion This area focuses on the research, development and demonstration of biological processes that convert biomass to biofuels, chemicals, and power. Biochemical processes also complement thermochemical conversion by providing residual materials for further processing. Biochemical conversion will advance in the future by enhancing fuel yields in integrated biorefineries which combine conversion types with heat and power efficiencies to produce fuel and products.

  20. "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 ...

  1. "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 ...

  2. Novel Energy Conversion Equipment for Low Temperatures Geothermal...

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

    Energy Conversion Equipment for Low Temperatures Geothermal Resources Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources Novel Energy Conversion Equipment ...

  3. Biomass conversion processes for energy and fuels

    SciTech Connect (OSTI)

    Sofer, S.S.; Zaborsky, O.R.

    1981-01-01

    The book treats biomass sources, promising processes for the conversion of biomass into energy and fuels, and the technical and economic considerations in biomass conversion. Sources of biomass examined include crop residues and municipal, animal and industrial wastes, agricultural and forestry residues, aquatic biomass, marine biomass and silvicultural energy farms. Processes for biomass energy and fuel conversion by direct combustion (the Andco-Torrax system), thermochemical conversion (flash pyrolysis, carboxylolysis, pyrolysis, Purox process, gasification and syngas recycling) and biochemical conversion (anaerobic digestion, methanogenesis and ethanol fermentation) are discussed, and mass and energy balances are presented for each system.

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

    SciTech Connect (OSTI)

    El-Genk, Mohamed S.; Tournier, Jean-Michel P.

    2002-07-01

    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)

  5. Direct Conversion Technology

    SciTech Connect (OSTI)

    Back, L.H.; Fabris, G.; Ryan, M.A.

    1992-07-01

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the first six months of 1992 on research activities associated with these two systems. (GHH)

  6. Center on Nanostructuring for Efficient Energy Conversion

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

    is to engineer catalysts with atomic scale precision for two key electrochemical energy conversion reactions for water splitting, namely, water oxidation (oxygen evolution),...

  7. BETO Conversion Program | Department of Energy

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

    BETO Conversion Program BETO Conversion Program Breakout Session 2A-Conversion Technologies II: Bio-Oils, Sugar Intermediates, Precursors, Distributed Models, and Refinery Co-Processing BETO Conversion Program Bryna Berendzen, Technology Manager, Bioenergy Technologies Office, U.S. Department of Energy berendzen_biomass_2014.pdf (1010.99 KB) More Documents & Publications Opportunities for Biomass-Based Fuels and Products in a Refinery 2013 Peer Review Presentations-Bio-oil 2013 Peer Review

  8. Thermochemical Conversion | Department of Energy

    Energy Savers [EERE]

    The Bioenergy Technologies Office conducts research on heat-, pressure-, and catalyst-based conversion of various biomass feedstocks to biofuels, chemicals, and power. These ...

  9. NREL-Ocean Energy Thermal Conversion | Open Energy Information

    Open Energy Info (EERE)

    Energy Laboratory Sector: Energy Topics: Resource assessment Website: www.nrel.govotec NREL-Ocean Energy Thermal Conversion Screenshot References: OTEC1 Logo: NREL-Ocean...

  10. Solar energy collection, concentration, and thermal conversion; A review

    SciTech Connect (OSTI)

    Haddock, C.; McKee, J.S.C. )

    1991-01-01

    The efficiency with which solar energy can be converted into more useful forms is one of the most important parameters concerning its utilization as a viable alternate source of energy. High efficiencies can be obtained by utilizing higher temperature working fluids. This in turn implies concentrating the intensity of sunlight using focusing type collector systems is discussed. Potential applications of concentrated solar intensity are presented in this article. A description of a new and potentially highly efficient solar thermal to electric converter based on a solar sustained cesium plasma is presented. Photovoltaics are not discussed in any detail in this article.

  11. Advanced energy conversion methods for cold fusion

    SciTech Connect (OSTI)

    Prelas, M.A. )

    1989-09-01

    If cold fusion is verified, then the next important question deals with how it can be used to produce energy. Several direct energy conversion concepts for use with cold fusion are discussed.

  12. Challenges and Opportunities in Thermoelectric Energy Conversion |

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

    Department of Energy Energy Conversion Challenges and Opportunities in Thermoelectric Energy Conversion 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Lawrence Berkeley Laboratory 2004_deer_majumdar.pdf (1.3 MB) More Documents & Publications High performance Zintl phase TE materials with embedded nanoparticles High performance Zintl phase TE materials with embedded nanoparticles Recent Device Developments with Advanced Bulk Thermoelectric Materials at RTI

  13. Energy conversion & storage program. 1994 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1995-04-01

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

  14. Energy Conversion & Storage Program, 1993 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1994-06-01

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

  15. Start Your Energy Conversion Devices

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

    | Department of Energy Start 2015 with an #EnergyResolution to Save Money and Energy All Year Long Start 2015 with an #EnergyResolution to Save Money and Energy All Year Long January 19, 2015 - 9:52am Addthis Create an #EnergyResolution to share how you plan to save money and energy in the New Year. | Graphic courtesy of Joelynn Schroeder, National Renewable Energy Laboratory Create an #EnergyResolution to share how you plan to save money and energy in the New Year. | Graphic courtesy of

  16. Hybrid staging of geothermal energy conversion process

    SciTech Connect (OSTI)

    Steidel, R.F. Jr.

    1984-05-07

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

  17. Utilizing Nature's Designs for Solar Energy Conversion

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

    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: 

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

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

    Center (LMI-EFRC) New approaches to full spectrum solar energy conversion California Institute of Technology Hall Auditorium, Gates-Thomas Laboratory [map] LIVE Internet Broadcast [download flyer] watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on New Approaches to Full Spectrum Solar Energy Conversion.

  19. Engineering Nanocrystals for Energy Conversion and Storage, and...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors Citation Details In-Document Search Title: Engineering Nanocrystals for Energy Conversion and ...

  20. MHK Technologies/Mobil Stabilized Energy Conversion Platform...

    Open Energy Info (EERE)

    Mobil Stabilized Energy Conversion Platform < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Mobil Stabilized Energy Conversion Platform.jpg...

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

    Open Energy Info (EERE)

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

  2. Potential Impacts of Hydrokinetic and Wave Energy Conversion...

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

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

  3. 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 ...

  4. Pin stack array for thermoacoustic energy conversion (Patent...

    Office of Scientific and Technical Information (OSTI)

    Pin stack array for thermoacoustic energy conversion Title: Pin stack array for thermoacoustic energy conversion A thermoacoustic stack for connecting two heat exchangers in a ...

  5. Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...

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

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

  6. Synchronous generator wind energy conversion control system

    SciTech Connect (OSTI)

    Medeiros, A.L.R.; Lima, A.M.N.; Jacobina, C.B.; Simoes, F.J.

    1996-12-31

    This paper presents the performance evaluation and the design of the control system of a WECS (Wind Energy Conversion System) that employs a synchronous generator based on its digital simulation. The WECS discussed in this paper is connected to the utility grid through two Pulse Width Modulated (PWM) power converters. The structure of the proposed WECS enables us to achieve high performance energy conversion by: (i) maximizing the wind energy capture and (ii) minimizing the reactive power flowing between the grid and the synchronous generator. 8 refs., 19 figs.

  7. Conversion Technologies | Department of Energy

    Energy Savers [EERE]

    Reserve | Department of Energy Contracts Awarded for Acquisition of Crude Oil for the Strategic Petroleum Reserve Contracts Awarded for Acquisition of Crude Oil for the Strategic Petroleum Reserve January 16, 2009 - 9:36am Addthis Royalty-In-Kind and Direct Purchases Will Add 16.8 Million Barrels to SPR by January 2010 WASHINGTON, DC - The U.S. Department of Energy (DOE) has awarded contracts to purchase10,683,000 barrels of crude oil at a cost of $553 million for the Department's Strategic

  8. Energy conversion & storage program. 1995 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1996-06-01

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

  9. Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources

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

    | Department of Energy Energy Conversion Equipment for Low Temperatures Geothermal Resources Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources presentation at the April 2013 peer review meeting held in Denver, Colorado. novel_energy_conversion_equipment_low_peer2013.pdf (582.04 KB) More Documents & Publications Novel Energy Conversion Equipment for Low Temperature Geothermal Resources

  10. 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.

  11. Conversion and Resource Evaluation Ltd CARE | Open Energy Information

    Open Energy Info (EERE)

    is an independent company providing specialist technical and economic services in the bio-energy and waste conversion sector. References: Conversion and Resource Evaluation Ltd...

  12. Direct conversion technology

    SciTech Connect (OSTI)

    Massier, P.F.; Back, L.H.; Ryan, M.A.; Fabris, G.

    1992-01-07

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC) and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1, 1991 through December 31, 1991. Research on AMTEC and on LMMHD was initiated during October 1987. Reports prepared on previous occasions (Refs. 1--5) contain descriptive and performance discussions of the following direct conversion concepts: thermoelectric, pyroelectric, thermionic, thermophotovoltaic, thermoacoustic, thermomagnetic, thermoelastic (Nitionol heat engine); and also, more complete descriptive discussions of AMTEC and LMMHD systems.

  13. Ocean Thermal Energy Conversion: An overview

    SciTech Connect (OSTI)

    Not Available

    1989-11-01

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

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

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

    Center (LMI-EFRC) The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on Approaches to Ultrahigh Efficiency Solar Energy Conversion. The LMI-EFRC is made up of world leaders creating new optical materials and innovative photonic designs that engineer and control light-material interactions, with the goal of achieving ultrahigh efficiency solar cells. This webinar will feature presentations and an

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

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

    Center (LMI-EFRC) watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on Approaches to Ultrahigh Efficiency Solar Energy Conversion. The LMI-EFRC is made up of world leaders creating new optical materials and innovative photonic designs that engineer and control light-material interactions, with the goal of

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

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

    Center (LMI-EFRC) New approaches to full spectrum solar energy conversion California Institute of Technology Hall Auditorium, Gates-Thomas Laboratory [map] LIVE Internet Broadcast [watch recorded event online] [download flyer] watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on New Approaches to Full

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

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

    Center (LMI-EFRC) Refractive Index Design via Porous Etched 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" (LMI-EFRC) is to tailor the morphology, complex dielectric structure, and electronic properties of matter so as to sculpt the flow of sunlight and heat, enabling light conversion to electrical and chemical energy with unprecedented efficiency. The

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

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

    Center (LMI-EFRC) 2016 2015 2014 2013 2012 2011 2010 Lectures & Tutorials Authorship Tools Publications 2016 image A Path Upward: New Upconversion Schemes for Improving Photovoltaics (Roadmap on Optical Energy Conversion) D. M. Wu, M. D. Wisser, A. Salleo, , and J. Dionne J. Opt. 18 073004 (2016) DOI: 10.1088/2040-8978/18/7/073004 image Harnessing the Coldness of the Universe by Radiative Cooling to Improve Energy Efficiency and Generation (Roadmap on Optical Energy Conversion) A.

  19. Novel Nuclear Powered Photocatalytic Energy Conversion

    SciTech Connect (OSTI)

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

    2005-08-29

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

  20. Atlantic Biomass Conversions Inc | Open Energy Information

    Open Energy Info (EERE)

    Biomass Conversions Inc Jump to: navigation, search Name: Atlantic Biomass Conversions Inc Place: Frederick, Maryland Sector: Biomass Product: Atlantic Biomass Conversions is...

  1. Advanced Conversion Roadmap Workshop | Department of Energy

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

    Advanced Conversion Roadmap Workshop Advanced Conversion Roadmap Workshop DOE introduction slides to the Advanced Conversion Roadmap Workshop webinar. ctabwebinardoe.pdf (1.47 ...

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

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

    one-day workshop focused on new materials and processes for overcoming the Shockley-Queisser limit of solar energy conversion efficiency. event website download flyer 05.23.12...

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

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

    Center (LMI-EFRC) Approaches to ultrahigh efficiency solar energy conversion webinar watch now The recorded presentations and panel discussion are now available for online viewing. Sign up is now closed

  4. Novel Energy Conversion Equipment for Low Temperature Geothermal Resources

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

    | Department of Energy Energy Conversion Equipment for Low Temperature Geothermal Resources Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Project objective: Develop equipment that generates electricity from low temperature geothermal resources at a cost at least 20% below that of the currently available technology. low_kohler_energy_conversion.pdf (218.32 KB) More Documents & Publications Novel Energy Conversion Equipment for Low Temperatures Geothermal

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

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

    Center (LMI-EFRC) Lectures from the LMI-EFRC "Fundamental Challenges in Solar Energy Conversion" Workshop, July 7, 2010, Caltech Harry Atwater Introduction to the Workshop on Fundamental Challenges in Solar Energy Conversion Harry A. Atwater, Caltech Eli Yablonovitch Fundamental Limits to Light Absorption and Efficiency in Photovoltaics Eli Yablonovitch, University of California, Berkeley Richard Swanson Efficiency Limits and Cost Challenges in Photovoltaics Richard Swanson,

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

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

    Center (LMI-EFRC) Scientific Grand Challenge LMI researchers brainstorm spectrum splitting, Annual Meeting November 2011 The LMI-EFRC is dedicated to expanding the scientific knowledge base for fundamentally photonic principles and mechanisms in solar energy conversion. An important set of requirements of photonic materials for solar energy conversion are related to the characteristics of the sun as a light source - it is a broadband and unpolarized light source, and the achievable

  7. Environmental impacts of ocean thermal energy conversion

    SciTech Connect (OSTI)

    Not Available

    1986-04-01

    Ocean thermal energy conversion (OTEC) is a promising technology for production of energy and usable by-products from solar-generated temperature gradients in the world's oceans. Although considered benign compared to alternative forms of energy generation, deployment of OTEC plants will result in interactions with marine, terrestrial, and atmospheric environments and in socioeconomic interactions with surrounding areas. The Ocean Energy Technology Program of the Department of Energy has funded research to improve the understanding of these interactions. No insurmountable environmental obstacle to OTEC deployment has been uncovered. This document contains a summary of that research for entrepreneurs, utility engineers, and others interested in pursuing OTEC's potential. In addition, it provides a guide to permits, regulations, and licenses applicable to construction of an OTEC plant.

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

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

    Center (LMI-EFRC) Contact Secretary 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 email lmi-efrc@caltech.edu or call LMI Administrator Tiffany Kimoto at 626-395-1566.

  9. 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.

  10. Oriented Nanostructures for Energy Conversion and Storage

    SciTech Connect (OSTI)

    Liu, Jun; Cao, Guozhong H.; Yang, Zhenguo; Wang, Donghai; DuBois, Daniel L.; Zhou, Xiao Dong; Graff, Gordon L.; Pederson, Larry R.; Zhang, Jiguang

    2008-08-28

    Recently the role of nanostructured materials in addressing the challenges in energy and natural resources has attracted wide attention. In particular, oriented nanostructures have demonstrated promising properties for energy harvesting, conversion and storage. The purpose of the paper is to review the synthesis and application of oriented nanostructures in a few key areas of energy technologies, namely photovoltaics, batteries, supercapacitors and thermoelectrics. Although the applications differ from field to field, one of the fundamental challenges is to improve the generation and transport of electrons and ions. We will first briefly review the several major approaches to attain oriented nanostructured films that are applicable for energy applications. We will then discuss how such controlled nanostructures can be used in photovoltaics, batteries, capacitors, thermoelectrics, and other unconventional ways of energy conversion. We will highlight the role of high surface area to maximize the surface activity, and the importance of optimum dimension and architecture, controlled pore channels and alignment of the nanocrystalline phase to optimize the electrons and ion transport. Finally, the paper will discuss the challenges in attaining integrated architectures to achieve the desired performance. Brief background information will be provided for the relevant technologies, but the emphasis is focused mainly on the nanoeffects of mostly inorganic based materials and devices.

  11. Biofuel Conversion Basics | Department of Energy

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

    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

  12. Solar Thermoelectric Energy Conversion | Department of Energy

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

    Solar Technologies for Native America November 20, 2003 Sandra Begay-Campbell Principal Member of the Technical Staff Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000. Helping our nation secure a peaceful and free world through technology. Where is Sandia National Labs? * New Mexico * California * Nevada * Hawaii * Texas We address the surety (safety, security &

  13. Nanoscale Materials and Architectures for Energy Conversion

    SciTech Connect (OSTI)

    Grulke, Eric A.; Sunkara, Mahendra K.

    2011-05-25

    The Kentucky EPSCoR Program supported an inter-university, multidisciplinary energy-related research cluster studying nanomaterials for converting solar radiation and residual thermal energy to electrical energy and hydrogen. It created a collaborative center of excellence based on research expertise in nanomaterials, architectures, and their synthesis. The project strengthened and improved the collaboration between the University of Louisville, the University of Kentucky, and NREL. The cluster hired a new faculty member for ultra-fast transient spectroscopy, and enabled the mentoring of one research scientist, two postdoctoral scholars and ten graduate students. Work was accomplished with three focused cluster projects: organic and photoelectrochemical solar cells, solar fuels, and thermionic energy conversion.

  14. Ocean energy conversion systems annual research report

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    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.

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

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

    Center (LMI-EFRC) 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 Nuzzo, Eli Yablonovitch, and Xiang Zhang Downshifting luminescent concentrator with micro solar cells (J. Rogers & R. Nuzzo, UIUC) The most substantial near-term opportunity for increase in solar energy conversion efficiency is via exploitation of the full solar spectrum. As first discussed by

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

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

    Center (LMI-EFRC) Program Hotel & Travel Presentations Event Photos Accelerating the Development of Earth-Abundant Thin-Film Photovoltaics Millikan Board Room [map] California Institute of Technology Pasadena, CA The Light-Material Interactions in Energy Conversion (LMI) Energy Frontier Research Center (EFRC), the Resnick Sustainability Institute, and the Quantum Energy and Sustainable Solar Technologies (QESST) Energy Research Center (ERC) are offering a two-day workshop on Accelerating

  17. Conversation with Paul Brown | Open Energy Information

    Open Energy Info (EERE)

    Conversation with Paul Brown Jump to: navigation, search OpenEI Reference LibraryAdd to library Personal Communication: Conversation with Paul Brown Author Paul Brown Recipient...

  18. Energy conversion device with improved seal

    DOE Patents [OSTI]

    Miller, Gerald R.; Virkar, Anil V.

    1980-01-01

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

  19. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

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

    1997-01-01

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

  20. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

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

    1997-02-11

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

  1. 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 Jay Kohler Eric Minor Johnson Controls, Inc. Geothermal Energy Production from Low Temperature Resources ...

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

    Office of Scientific and Technical Information (OSTI)

    Energy Storage, Conversion, and Utilization Process Equipment Cost Estimation, Final ... with IPST, now at Cargill. Inc) (2008) Energy Saving Potentials and Air Quality ...

  3. Biochemical Conversion - Biorefinery Integration | Department of Energy

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

    Research & Development » Conversion Technologies » Biochemical Conversion » Biochemical Conversion - Biorefinery Integration Biochemical Conversion - Biorefinery Integration One of the essential elements in the economical and efficient production of cellulosic biofuels is the development of biorefineries. Similar in concept to traditional petroleum refineries, biorefineries convert various types of biomass feedstock into marketable chemicals, fuels, and products. By taking advantage of

  4. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    SciTech Connect (OSTI)

    Sands, M.Dale

    1980-08-01

    Significant achievements in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power in this decade with subsequent large-scale commercialization to follow by the turn of the century. Under U.S. Department of Energy funding, Interstate Electronics has prepared an OTEC Programmatic Environmental Assessment (EA) that considers tne development, demonstration, and commercialization of OTEC power systems. The EA considers several tecnnological designs (open cycle and closed cycle), plant configurations (land-based, moored, and plantship), and power usages (baseload electricity and production of ammonia and aluminum). Potencial environmental impacts, health and safety issues, and a status update of international, federal, and state plans and policies, as they may influence OTEC deployments, are included.

  5. Thermochemical Conversion Related Links | Department of Energy

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

    Conversion » Thermochemical Conversion Related Links Thermochemical Conversion Related Links Further reading about current Bioenergy Technologies Office R&D in the Thermochemical Platform can be found in this website's Information Resources section. Some key publications are: Biomass Conversion: From Feedstocks to Final Products (July 2016) Thermochemical Conversion 2009 Peer Review Design Case Summary: Production of Gasoline and Diesel from Biomass via Fast Pyrolysis, Hydrotreating, and

  6. Technology assessment of wind energy conversion systems

    SciTech Connect (OSTI)

    Meier, B. W.; Merson, T. J.

    1980-09-01

    Environmental data for wind energy conversion systems (WECSs) have been generated in support of the Technology Assessment of Solar Energy (TASE) program. Two candidates have been chosen to characterize the WECS that might be deployed if this technology makes a significant contribution to the national energy requirements. One WECS is a large machine of 1.5-MW-rated capacity that can be used by utilities. The other WECS is a small machine that is characteristic of units that might be used to meet residential or small business energy requirements. Energy storage systems are discussed for each machine to address the intermittent nature of wind power. Many types of WECSs are being studied and a brief review of the technology is included to give background for choosing horizontal axis designs for this study. Cost estimates have been made for both large and small systems as required for input to the Strategic Environmental Assessment Simulation (SEAS) computer program. Material requirements, based on current generation WECSs, are discussed and a general discussion of environmental impacts associated with WECS deployment is presented.

  7. Ocean Thermal Energy Conversion Act of 1980

    SciTech Connect (OSTI)

    Not Available

    1980-01-01

    A legislative proposal to develop ocean thermal energy conversion (OTEC) facilities for power generation was the subject of hearings held on April 10 and May 1, 1980. Following the test of S. 2492 are the statements of 20 witnesses and additional materials submitted for consideration. The need for a large-scale demonstration of OTEC and the need for a Federal regulatory, siting, and financial-assistance framework are the major commercialization issues. S. 2492 provides one-stop licensing by treating the facilities as vessels and making them eligible for loan guarantees. The bill complements S. 1430, which deals with the demonstration program. OTEC development in Hawaii has progressed to a second pilot project. (DCK)

  8. Processing and Conversion | Department of Energy

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

    Research & Development » Processing and Conversion Processing and Conversion The strategic goal of Conversion Research and Development (R&D) is to develop technologies for converting feedstocks into commercially viable liquid transportation fuels, as well as bioproducts and biopower. The diversity of the biomass resource requires the development of multiple conversion technologies that can efficiently deal with the broad range of feedstock materials, as well as their physical and

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

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

    Center (LMI-EFRC) Program Schedule Abstract Submission Hotel & Travel Register Event Photos Redefining the Limits of Photovoltaic Efficiency Sunday, July 29, 2012 California Institute of Technology Hameetman Auditorium at the Cahill Center [map] 8:30 am - 5:30 pm Co-organized by the Resnick Sustainability Institute and the Light-Material Interactions in Energy Conversion (LMI) Energy Frontier Research Center this one-day workshop brings together leaders from industry, academia and

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

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

    Center (LMI-EFRC) Lectures & Tutorials Lectures from the LMI-EFRC "New Approaches to Full Spectrum Solar Energy Conversion" Webinar, September 3, 2015, Caltech Harry A. Atwater Quantum Dot Luminescent Concentrators Paul Alivisatos, Lawrence Berkeley National Laboratory John Rogers Control of Thermal Radiation Using Photonic Structures for Energy Applications Shanhui Fan, Stanford University Eli Yablonovitch Printing Functional Materials Jennifer Lewis, Harvard lmi logo Panel

  11. Ocean thermal energy conversion: Perspective and status

    SciTech Connect (OSTI)

    Thomas, A.; Hillis, D.L.

    1990-01-01

    The use of the thermal gradient between the warm surface waters and the deep cold waters of tropical oceans was first proposed by J. A. d'Arsonval in 1881 and tried unsuccessfully be George Claude in 1930. Interest in Ocean Thermal Energy Conversion (OTEC) and other renewable energy sources revived in the 1970s as a result of oil embargoes. At that time, the emphasis was on large floating plants miles from shore producing 250--400 MW for maintained grids. When the problems of such plants became better understood and the price of oil reversed its upward trend, the emphasis shifted to smaller (10 MW) shore-based plants on tropical islands. Such plants would be especially attractive if they produce fresh water as a by-product. During the past 15 years, major progress has been made in converting OTEC unknowns into knowns. Mini-OTEC proved the closed-cycle concept. Cost-effective heat-exchanger concepts were identified. An effective biofouling control technique was discovered. Aluminum was determined to be promising for OTEC heat exchangers. Heat-transfer augmentation techniques were identified, which promised a reduction on heat-exchanger size and cost. Fresh water was produced by an OTEC open-cycle flash evaporator, using the heat energy in the seawater itself. The current R D emphasis is on the design and construction of a test facility to demonstrate the technical feasibility of the open-cycle process. The 10 MW shore-based, closed-cycle plant can be built with today's technology; with the incorporation of a flash evaporator, it will produce fresh water as well as electrical power -- both valuable commodities on many tropical islands. The open-cycle process has unknowns that require solution before the technical feasibility can be demonstrated. The economic viability of either cycle depends on reducing the capital costs of OTEC plants and on future trends in the costs of conventional energy sources. 7 refs.

  12. MHK Technologies/Wave Energy Conversion Activator WECA | Open...

    Open Energy Info (EERE)

    MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Energy Conversion Activator WECA.jpg Technology Profile Primary Organization Daedalus...

  13. Symposium on the Physical Chemistry of Solar Energy Conversion...

    Office of Scientific and Technical Information (OSTI)

    for Solar Energy Conversion (2 half-day sessions); (2) Artificial Photosynthesis: Water Oxidation; (3) Artificial Photosynthesis: Solar Fuels (2 half-day sessions); (4) ...

  14. Symposium on the Physical Chemistry of Solar Energy Conversion...

    Office of Scientific and Technical Information (OSTI)

    Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013 Citation Details In-Document Search Title: Symposium on ...

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

    Office of Scientific and Technical Information (OSTI)

    September 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process ... 2010 Toyota Prius Hybrid Synergy Drive System Burress, Timothy A ORNL; Campbell, ...

  16. March 2014 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    March 2014 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process ... 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, ...

  17. Most Viewed Documents for Energy Storage, Conversion, and Utilization...

    Office of Scientific and Technical Information (OSTI)

    Most Viewed Documents for Energy Storage, Conversion, and Utilization: December 2014 Process ... 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, ...

  18. June 2014 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    June 2014 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process ... 2004 Toyota Prius Hybrid Electric Drive System Staunton, R.H.; Ayers, C.W.; Chiasson, ...

  19. March 2015 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    March 2015 Most Viewed Documents for Energy Storage, Conversion, And Utilization Process ... 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, ...

  20. Most Viewed Documents for Energy Storage, Conversion, and Utilization...

    Office of Scientific and Technical Information (OSTI)

    Most Viewed Documents for Energy Storage, Conversion, and Utilization: September 2014 Process ... 2007 Toyota Camry Hybrid Syneregy Drive System Burress, T.A.; Coomer, C.L.; Campbell, ...

  1. Directors - Center for Solar and Thermal Energy Conversion

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

    Green was a member of the decadal study on Condensed Matter and Materials Physics ... particularly for functional coatings, sensors and energy conversion applications. ...

  2. Photonic Crystals for Enhancing Thermophotovoltaic Energy Conversion

    SciTech Connect (OSTI)

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

    2003-03-01

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

  3. 2009 Biochemical Conversion Platform Review Report | Department of Energy

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

    2009 Biochemical Conversion Platform Review Report 2009 Biochemical Conversion Platform Review Report This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Program's Biochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado. obp_biochem_conversion_platform_review_2009.pdf (4.32 MB) More Documents & Publications 2009

  4. Plasma-Hydrocarbon conversion - Energy Innovation Portal

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

    Hydrocarbon conversion Idaho National Laboratory Contact INL About This Technology Technology Marketing Summary INL's Plasma-Hydrocarbon Conversion process enables conversion of heavy hydrocarbons, such as heavy crude oil and hydrocarbon gases like natural gas, into lighter hydrocarbon materials (e.g. synthetic light oil). Description It can convert hydrocarbon gases to liquid fuels/chemicals. The dielectric barrier discharge plasma process that adds carbon and hydrogen simultaneously to heavy

  5. Biochemical Conversion Related Links | Department of Energy

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

    Conversion 2009 Peer Review Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model For more publications, see the Bioenergy Publication Library

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

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

    Center (LMI-EFRC) New approaches to full spectrum solar energy conversion California Institute of Technology Hall Auditorium, Gates-Thomas Laboratory [map] LIVE Internet Broadcast [download flyer] Recordings of the presentations and panel discussions are available here for online viewing. Detailed abstracts for the presentations can be found here. Paul Alivisatos Quantum Dot Luminescent Concentrators Paul Alivisatos, Lawrence Berkeley National Laboratory Shanhui Fan Control of Thermal

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

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

    Center (LMI-EFRC) On Sunday, July 29, 2012, the Resnick Sustainability Institute and the LMI-EFRC at Caltech co-organized a one-day workshop on Redefining the Limits of Photovoltaic Efficiency. Leaders from industry, academia and government gathered together and discussed new technologies for redefining the limits of solar energy conversion efficiency. The program featured invited talks, a poster session, and topically-focused breakout sessions in the afternoon. Invited speakers included

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

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

    Center (LMI-EFRC) 1: New Light Management Mechanisms RG Leader: Eli Yablonovitch Affiliated PIs: Harry Atwater, Paul Braun, Mark Brongersma, Jennifer Dionne, Shanhui Fan, Andrei Faraon, John Rogers, and Xiang Zhang image Large-area nanostructured plasmonic solar cells in amorphous silicon (H. Atwater, Caltech & P. Alivisatos, LBNL The RG1 team is establishing light management principles that challenge historical scientific ideas about solar energy conversion efficiency limits. RG1 is a

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

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

    Center (LMI-EFRC) 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 LMI-EFRC and opportunities to get involved, please contact lmi-efrc@caltech.edu. Former governor Arnold Schwarzenegger and Austrian Chancellor Werner Faymann visit Caltech. Hollywood film director James Cameron visits Caltech

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

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

    Center (LMI-EFRC) Events image Perovskite Solar Cells: Towards New Materials and New Applications Nripan Mathews, Nanyang Technological University, Singapore November 3, 2014, 11:15 am 101 Guggenheim Lab, Lees-Kubota Hall 2013 workshop Approaches to Ultrahight Efficiency Solar Energy Conversion We are excited to offer this FREE public webinar featuring presentations and an interactive panel discussion with LMI-EFRC photovoltaic experts! March 7, 2013, 8:30-10:30 am PST Hameetman Auditorium,

  11. Utilizing Nature's Designs for Solar Energy Conversion | Department of

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

    Energy Utilizing Nature's Designs for Solar Energy Conversion Utilizing Nature's Designs for Solar Energy Conversion 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. bio_h2_workshop_utschig.pdf (1.24 MB) More Documents & Publications 2013 Biological Hydrogen Production Workshop Summary Report Basic Research Needs for Solar Energy

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

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

    Center (LMI-EFRC) UIUC Workshop Acknowledgements To be included as an LMI-EFRC publication, paper acknowledgements must be carefully worded. Please use the following as a guideline in preparing the "Acknowledgements" section in your manuscripts that include the LMI-EFRC as a source of support. For work solely funded by the LMI-EFRC At minimum, please use this wording: "This work was supported by the DOE 'Light-Material Interactions in Energy Conversion' Energy Frontier

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

    SciTech Connect (OSTI)

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

    1996-12-31

    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.

  14. Solar to Chemical Energy Conversion with Photocatalytic Heterostructur...

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

    Solar to Chemical Energy Conversion with Photocatalytic Heterostructures made of Earth Abundant Materials Cu2ZnSnS4 (CZTS) is one of the most promising materials for solar energy...

  15. Thermochemical Conversion - Biorefinery Integration | Department of Energy

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

    - Biorefinery Integration Thermochemical Conversion - Biorefinery Integration Fuels Synthesis Fuels can be produced from bio-oils using processes similar to those found in a petroleum refinery, including hydrotreating and hydrocracking to create green gasoline, an alternative to alcohol-based ethanol fuels. Some types of bio-oils can even be fully integrated into petroleum refining stream and infrastructure. The conversion of biomass derived syngas to products is typically an exothermic process,

  16. Thermochemical Conversion Processes | Department of Energy

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

    Processes Thermochemical Conversion Processes Gasification In gasification conversion, lignocellulosic feedstocks such as wood and forest products are broken down to synthesis gas, primarily carbon monoxide and hydrogen, using heat. The feedstock is then partially oxidized, or reformed with a gasifying agent (air, oxygen, or steam), which produces synthesis gas (syngas). The makeup of syngas will vary due to the different types of feedstocks, their moisture content, the type of gasifier used,

  17. Open cycle ocean thermal energy conversion system

    DOE Patents [OSTI]

    Wittig, J. Michael

    1980-01-01

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

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

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

    Center (LMI-EFRC) 3 LMI-EFRC Team Meeting March 7-8, 2013 California Institute of Technology Pasadena, CA [map] Our 2013 Annual Meeting will be at Caltech on Thursday-Friday, March 7-8, 2013. This year, we will kick off the meeting with our first-ever free public webinar on Approaches to Ultrahigh Efficiency Solar Energy Conversion featuring presentations and a panel discussion with some of our expert faculty investigators. The remainder of the meeting will be devoted primarily to student-

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

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

    Center (LMI-EFRC) Fall Meeting September 3-4, 2015 California Institute of Technology Pasadena, CA [map] Our 2015 LMI-EFRC Fall Meeting will be at Caltech on Thursday-Friday, September 3-4, 2015. Our meeting this year will start with a public webinar on New Approaches to Full Spectrum Solar Energy Conversion featuring some of our LMI experts. This meeting will gather the PIs, students, and postdocs from the five institutions (Caltech, Harvard, LBL, Stanford, and UIUC) for a combination of

  20. Project Profile: Next-Generation Thermionic Solar Energy Conversion |

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

    Department of Energy Generation Thermionic Solar Energy Conversion Project Profile: Next-Generation Thermionic Solar Energy Conversion Stanford/SLAC logo -- This project is inactive -- Stanford University and the SLAC National Accelerator Laboratory, under the 2012 SunShot Concentrating Solar Power (CSP) R&D funding opportunity announcement (FOA), is designing and testing an innovative high-temperature power cycle for CSP systems that does not require any mechanical equipment, resulting

  1. DUF6 Conversion | Department of Energy

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

    Services » PPPO Cleanup Projects - Portsmouth, Paducah, & DUF6 » DUF6 Conversion DUF6 Conversion DUF6 Facility at the Paducah Site DUF6 Facility at the Paducah Site DUF6 Facility at the Portsmouth Site DUF6 Facility at the Portsmouth Site There are more than 63,000 cylinders filled with DUF6 stored in cylinder yards at the Paducah and Portsmouth Sites. There are more than 63,000 cylinders filled with DUF6 stored in cylinder yards at the Paducah and Portsmouth Sites. DUF6 cylinder

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

    DOE Patents [OSTI]

    Dziendziel, Randolph J.; DePoy, David Moore; Baldasaro, Paul Francis

    2007-01-23

    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.

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

    DOE Patents [OSTI]

    Dziendziel, Randolph J.; Baldasaro, Paul F.; DePoy, David M.

    2010-09-07

    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.

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

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information January 2013 Most Viewed Documents for Energy Storage, Conversion, And Utilization Energy Technology Perspectives 2012: Executive Summary [Portuguese version] NONE Energy indicators for electricity production : comparing technologies and the nature of the indicators Energy Payback Ratio (EPR), Net Energy Ratio (NER) and Cumulative Energy Demand (CED). [Oestfoldforskning AS] Raadal, Hanne Lerche [Ostfold

  5. Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion

    SciTech Connect (OSTI)

    Dasgupta, Neil; Yang, Peidong

    2013-01-23

    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.

  6. Mitochondrial complex I - energy conversion by a giant proton...

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

    Mitochondrial complex I - energy conversion by a giant proton pump Wednesday, November 4, 2015 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Speaker: Volker Zickermann, Goethe...

  7. Energy Conversion and Thermal Efficiency Sales Tax Exemption

    Office of Energy Efficiency and Renewable Energy (EERE)

    Qualifying energy conversion facilities are those that are used for the primary purpose of converting natural gas or fuel oil to an alternate fuel or power source excluding propane, butane, napht...

  8. Energy conversion device with support member having pore channels

    DOE Patents [OSTI]

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

    2014-01-07

    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.

  9. 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 bulk. In particular, we aim to exploit unique quantum effects at the nanoscale which are promising for the realization of new paradigms in solar energy conversion such as intermediate band or hot carrier solar cells. Thrust Leaders: Prof. Rachel Goldman (MSE)&nbspand Prof. Jamie Phillips (EECS) Recent Publications -

  10. Alternative energy conversion demonstration laboratory at U. S. Naval Academy

    SciTech Connect (OSTI)

    Wu, C.

    1983-12-01

    This paper describes an alternative energy conversion demonstration laboratory which supplements classroom theory in a senior engineering elective course in energy conversion in the Department of Mechanical Engineering at the U.S. Naval Academy. Oil, nuclear energy, and other conventional sources of power have been the dominant sources for industrial society and the U.S. Navy, and will continue to be so for the foreseeable future. There are other possibilities, however, including wind power, solar power, ocean thermal power and tidal power. A need for alternative sources of energy for the Navy was recognized at the time of the Arab oil embargo in 1973, and an academic program in alternative energy has been developed to help satisfy that need. Specific demonstrations included in this paper are as follows: Mechanical modeling of the depletion of energy reserve, Computer graphic simulation of energy consumption and energy resource exhaust, Wind model, Thermax helius rotor wind machine, Solar breeze - an electric sailboat project, Vertical axis wind turbine, Helicopter, airplane propeller and windmill models test in wind tunnel, Ocean Thermal Energy Conversion Device Demonstration, Pneumatic Wave Energy Conversion Device Demonstration, Chemical Energy Storage Device Demonstration, Solar Energy Demonstration.

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

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

    Introduction to the solid-state solar-thermal energy conversion center plus discussion on phonon transport and solar thermoelectric energy conversion PDF icon chen.pdf More ...

  12. Energy Conversion and Storage Program: 1992 Annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1993-06-01

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

  13. Pin stack array for thermoacoustic energy conversion

    DOE Patents [OSTI]

    Keolian, Robert M.; Swift, Gregory W.

    1995-01-01

    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.

  14. Advisors | Solid State Solar Thermal Energy Conversion

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

    Advisors Robert Armstrong Director, MIT Energy Initiative Visit Website George W. Crabtree Senior Scientist, Argonne National Laboratory Argonne Distinguished Fellow Visit Website ...

  15. Direct Conversion Technology. Progress report, January 1, 1992--June 30, 1992

    SciTech Connect (OSTI)

    Back, L.H.; Fabris, G.; Ryan, M.A.

    1992-07-01

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the first six months of 1992 on research activities associated with these two systems. (GHH)

  16. Department of Energy Cites BWXT Conversion Services, LLC for

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

    BWXT Conversion Services, LLC for Worker Safety and Health Program Violations July 13, 2016 - 4:43pm NEWS MEDIA CONTACT  202-586-4940  DOENews@hq.doe.gov WASHINGTON - The U.S. Department of Energy (DOE) today issued a Preliminary Notice of Violation (PNOV) to BWXT Conversion Services, LLC (BWCS) for violations of DOE worker safety and health requirements. DOE's enforcement program holds contractors accountable for meeting regulatory requirements and maintaining a safe and healthy

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

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

    (S3TEC ) | Department of Energy Introduction to the solid-state solar-thermal energy conversion center plus discussion on phonon transport and solar thermoelectric energy conversion chen.pdf (2.01 MB) More Documents & Publications Solar Thermoelectric Energy Conversion Solar Thermoelectric Energy Conversion DOE Office of Basic Sciences: An Overview of Basic Research Activities on Thermoelectrics

  18. Currency Conversion and Energy Projections: Some Questions and Answers

    U.S. Energy Information Administration (EIA) Indexed Site

    Currency Conversion and Energy Projections: Some Questions and Answers Vipin Arora November 2015 Independent Statistics & Analysis www.eia.gov U.S. Energy Information Administration Washington, DC 20585 This paper is released to encourage discussion and critical comment. The analysis and conclusions expressed here are those of the authors and not necessarily those of the U.S. Energy Information Administration. WORKING PAPER SERIES November 2015 Vipin Arora | U.S. Energy Information

  19. Center on Nanostructuring for Efficient Energy Conversion - Outside

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

    Inquiries Contact Us Outside Inquiries If you have a specific question regarding CNEEC or the work it does, please contact Elizabeth Mattson at emattson(at)stanford.edu. Center on Nanostructuring for Efficient Energy Conversion is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences Stanford Home | Engineering Home | CNEEC Home | Contact Us © 1997-2015 Stanford University. All Rights Reserved. CNEEC Research

  20. Center on Nanostructuring for Efficient Energy Conversion - Team & Research

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

    Slideshow Staff Team & Research Slideshow Center on Nanostructuring for Efficient Energy Conversion is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences Stanford Home | Engineering Home | CNEEC Home | Contact Us © 1997-2015 Stanford University. All Rights Reserved. CNEEC Research Faculty Directors & PI's Partners Team & Research Slideshow

  1. Ocean thermal energy conversion: report to congress - fiscal year 1982

    SciTech Connect (OSTI)

    Not Available

    1983-03-31

    National Oceanic and Atmospheric Administration (NOAA) activities related to ocean thermal energy conversion (OTEC) during fiscal year 1982 are described. The agency focus has been in the areas of providing ocean engineering and technical assistance to the Department of Energy (DOE), in streamlining the administration of the Federal OTEC licensing system, and in environmental assistance.

  2. Staff | Solid State Solar Thermal Energy Conversion

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

    Staff and Contractors Staff and Contractors Watch the video above to hear a message from Secretary Moniz, highlighting the FY 2016 budget request for the Department of Energy and his appreciation for the vital mission and dedicated employees of the Department. As referenced in the video, employees are encouraged to visit the Department's website to view the full FY 2016 budget presentation, which proposes approximately $30 billion to support nuclear security, clean energy, environmental cleanup,

  3. Direct Energy Conversion Nano-hybrid Fuel

    SciTech Connect (OSTI)

    Popa-Simil, Liviu

    2008-07-01

    Most of the exothermic nuclear reactions transfer the mass defect or binding and surplus energy into kinetic energy of the resulting particles. These particles are traveling through material lattices, interacting by ionization and nuclear collisions. Placing an assembly of conductive-insulating layers in the path of such radiation, the ionization energy is transformed into charge accumulation by polarization. The result is a super-capacitor charged by the moving particles and discharged electrically. Another more promising solution is to use bi-material nanoparticles organized such as to act like a serial connection and add the voltage. A spherical symmetry fission products source coated in several nano-layers is desired for such structures. The system may operate as dry or liquid-immersed battery, removing the fission products from the fissile material. There is a tremendous advantage over the current heat flow based thermal stabilization system allowing a power density up to 1000 times higher. (author)

  4. Energy Conversion and Storage Program. 1990 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1992-03-01

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

  5. A unified site evaluation system for wind energy conversion

    SciTech Connect (OSTI)

    Biro, G.G.

    1980-12-01

    The described evaluation system includes all field and office engineering work needed for proper site selections and for writing the environmental impact statement. Meteorological measurements with collapsible towers trucked to the site, the needed instrumentation, and data transmission with satellite telemetry for storing the meteorological data on a magnetic tape for direct input into the computer are described. A computer program WESES was developed to calculate the energy output of WECSs using the meteorological data on the magnetic tapes. A test site analysis using 7 years of wind velocity measurements is performed, and two 500-kW power wind energy conversion systems have been evaluated. The calculational results give the hourly fluctuations of energy output for any day of the measurements, which also can be used for comparing with load demands. It also calculates and shows in graphs the daily and monthly cumulative energy outputs and compares the energy outputs of different wind energy conversion systems for any desired time period.

  6. Direct conversion technology: Annual summary report CY 1988

    SciTech Connect (OSTI)

    Massier, P.F.; Bankston, C.P.; Fabris, G.; Kirol, L.D.

    1988-12-01

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct thermal-to-electric energy conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC), and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1988 through December 1988. Research on these concepts was initiated during October 1987. In addition, status reviews and assessments are presented for thermomagnetic converter concepts and for thermoelastic converters (Nitinol heat engines). Reports prepared on previous occasions contain discussions on the following other direct conversion concepts: thermoelectric, pyroelectric, thermionic thermophotovoltaic and thermoacoustic; and also, more complete discussions of AMTEC and LMMHD systems. A tabulated summary of the various systems which have been reviewed thus far has been prepared. Some of the important technical research needs are listed and a schematic of each system is shown. These tabulations are included herein as figures. 43 refs., 26 figs., 1 tab.

  7. Thermoelectrics | Solid State Solar Thermal Energy Conversion

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

    Thermoelectrics One of the central themes of S3TEC is to develop more efficient thermoelectric materials to directly convert heat into electricity via the Seebeck effect, or provide cooling via the Peltier effect. Their ability to harvest waste heat and deliver cooling power through solid-state devices without moving parts makes them important candidates of sustainable energy technologies in the future. Despite the benefits, the current bottleneck of thermoelectric technology is its relatively

  8. News - Center for Solar and Thermal Energy Conversion

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

    Archives Events/News Archives 1st Annual CSTEC External Workshop: August 4, 2010 2nd Annual CSTEC External Workshop: May 3, 2011 3rd Annual CSTEC External Workshop: October 2, 2012 DOE to establish Energy Frontier Research Center in solar energy at U-M CSTEC investigators co-chair ICEL2010 Forcing mismatched elements together could yield better solar cells Recycling waste heat into energy: Researchers take a step toward more efficient conversion Multi-EFRC Collaborative Effort on TE in

  9. Research Program - Center for Solar and Thermal Energy Conversion

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

    The Thermoelectric 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 array of assembled molecules. The CSTEC team tackles the challenges of thermoelectricity comprehensively by studying transport phenomena from a multi-dimensional perspective that spans charge and energy transport in molecular junctions, conduction processes in two-dimensional films, and the role the

  10. Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources

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

    Program 2013 Peer Review Novel Energy Conversion Equipment for Low Temperature Geothermal Resources April 22, 2013 This presentation does not contain any proprietary 1 | US DOE Geothermal Program confidential, or otherwise restricted information. Public Service of Colorado Ponnequin Wind Farm Jay Kohler Frank Baumgardt Johnson Controls, Inc. Geothermal Energy Production from Low Temperature Resources eere.energy.gov Overview Timeline: This project was awarded on April 30, 2010. Manufacturing of

  11. June 2014 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information June 2014 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) 337 Seventh Edition Fuel Cell Handbook NETL (2004) 118 Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005) 76 Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

  12. March 2014 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information March 2014 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) 291 Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005) 85 Seventh Edition Fuel Cell Handbook NETL (2004) 68 Separation of heavy metals: Removal from industrial wastewaters and

  13. March 2015 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information March 2015 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) 1019 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L. (1993) 229 Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005)

  14. Most Viewed Documents for Energy Storage, Conversion, and Utilization:

    Office of Scientific and Technical Information (OSTI)

    December 2014 | OSTI, US Dept of Energy Office of Scientific and Technical Information Most Viewed Documents for Energy Storage, Conversion, and Utilization: December 2014 Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) 322 Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005) 107 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L.

  15. Most Viewed Documents for Energy Storage, Conversion, and Utilization:

    Office of Scientific and Technical Information (OSTI)

    September 2014 | OSTI, US Dept of Energy Office of Scientific and Technical Information Most Viewed Documents for Energy Storage, Conversion, and Utilization: September 2014 Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) 193 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) 79 Energy Saving Potentials and

  16. Efficient electrochemical CO2 conversion powered by renewable energy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kauffman, Douglas R.; Thakkar, Jay; Siva, Rajan; Matranga, Christopher; Ohodnicki, Paul R.; Zeng, Chenjie; Jin, Rongchao

    2015-06-29

    Here, the catalytic conversion of CO2 into industrially relevant chemicals is one strategy for mitigating greenhouse gas emissions. Along these lines, electrochemical CO2 conversion technologies are attractive because they can operate with high reaction rates at ambient conditions. However, electrochemical systems require electricity, and CO2 conversion processes must integrate with carbon-free, renewable-energy sources to be viable on larger scales. We utilize Au25 nanoclusters as renewably powered CO2 conversion electrocatalysts with CO2 → CO reaction rates between 400 and 800 L of CO2 per gram of catalytic metal per hour and product selectivities between 80 and 95%. These performance metrics correspondmore » to conversion rates approaching 0.8–1.6 kg of CO2 per gram of catalytic metal per hour. We also present data showing CO2 conversion rates and product selectivity strongly depend on catalyst loading. Optimized systems demonstrate stable operation and reaction turnover numbers (TONs) approaching 6 × 106 mol CO2 molcatalyst–1 during a multiday (36 hours total hours) CO2electrolysis experiment containing multiple start/stop cycles. TONs between 1 × 106 and 4 × 106 molCO2 molcatalyst–1 were obtained when our system was powered by consumer-grade renewable-energy sources. Daytime photovoltaic-powered CO2 conversion was demonstrated for 12 h and we mimicked low-light or nighttime operation for 24 h with a solar-rechargeable battery. This proof-of-principle study provides some of the initial performance data necessary for assessing the scalability and technical viability of electrochemical CO2 conversion technologies. Specifically, we show the following: (1) all electrochemical CO2 conversion systems will produce a net increase in CO2 emissions if they do not integrate with renewable-energy sources, (2) catalyst loading vs activity trends can be used to tune process rates and product distributions, and (3) state-of-the-art renewable-energy technologies

  17. Proceedings of the 25th intersociety energy conversion engineering conference

    SciTech Connect (OSTI)

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

    1990-01-01

    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.

  18. SOLID STATE ENERGY CONVERSION ALLIANCE DELPHI SOFC

    SciTech Connect (OSTI)

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

    2003-06-09

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

  19. Ocean Thermal Energy Conversion Program Management Plan

    SciTech Connect (OSTI)

    Combs, R E

    1980-01-01

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

  20. Ocean thermal energy conversion: a review

    SciTech Connect (OSTI)

    Yuen, P.C.

    1981-10-01

    The OTEC principle is discussed along with general system and cycle types, specific OTEC designs, OTEC applications, and the ocean thermal resource. The historic development of OTEC is briefly reviewed, and the status of French, Japanese, EUROCEAN, and US programs is assessed. US efforts are detailed and DOE's strategy outlined with OTEC-1 and Mini-OTEC information. Power system components of the more technically advanced closed-cycle OTEC concept are discussed. These include: heat exchangers, corrosion and biofouling countermeasures, working fluids, ammonia power systems, and on-platform seawater systems. Several open-cycle features are also discussed. A critical review is presented of the ocean engineering aspects of OTEC power systems. Major subsystems such as platform, cold water pipe, mooring system, dynamic positioning system, power transmission cable system are assessed for their relationships with the ocean environment and with each other. Nine available studies of OTEC costs are reviewed. Tentative comparisons are made between OTEC and traditional fuel costs, and OTEC products and markets are considered. Possible environmental and social effects of OTEC development are discussed. International, national, and local laws regulating OTEC plants and OTEC energy products are reviewed. Tax incentives, attitudes of the utilities, and additional legislative needs are considered. (LEW)

  1. Quantitative evaluation of ocean thermal energy conversion (OTEC): executive briefing

    SciTech Connect (OSTI)

    Gritton, E.C.; Pei, R.Y.; Hess, R.W.

    1980-08-01

    Documentation is provided of a briefing summarizing the results of an independent quantitative evaluation of Ocean Thermal Energy Conversion (OTEC) for central station applications. The study concentrated on a central station power plant located in the Gulf of Mexico and delivering power to the mainland United States. The evaluation of OTEC is based on three important issues: resource availability, technical feasibility, and cost.

  2. 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 Enhanced Inverted Photovoltaics Femtosecond Laser-induced Nanostructure Formation in Sb2Te3 Ideal Diode Equation For Organic Heterojunctions. I and II

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

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information 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

  4. September 2015 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information September 2015 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) 1049 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L. (1993) 285 An Improved Method of Manufacturing Corrugated Boxes: Lateral Corrugator Frank C. Murray Ph.D.; ,

  5. Research and development on ocean thermal energy conversion in Japan

    SciTech Connect (OSTI)

    Uehara, H.

    1982-08-01

    The study of Ocean Thermal Energy Conversion (OTEC) in Japan has been conducted under the leadership of a team of the ''Sunshine Project'', a national new energy development project promoted by the Ministry of International Trade and Industries (MITI) since 1974. At present, two experimental OTEC power plants -Nauru's OTEC plant and Imari's OTEC plant are operating. In this paper, the review of research and development activity of these two OTEC plants in Japan is made.

  6. June 2016 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information Energy Storage, Conversion, And Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) 2242 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L. (1993) 582 Automotive vehicle sensors Sheen, S.H.; Raptis, A.C.; Moscynski, M.J. (1995) 496 Building a secondary containment system Broder, M.F.

  7. December 2015 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information December 2015 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) 1446 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L. (1993) 452 Automotive vehicle sensors Sheen, S.H.; Raptis, A.C.; Moscynski, M.J. (1995) 373 An Improved Method

  8. June 2015 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information June 2015 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) 833 Separation of heavy metals: Removal from industrial wastewaters and contaminated soil Peters, R.W.; Shem, L. (1993) 234 An Improved Method of Manufacturing Corrugated Boxes: Lateral Corrugator Frank C. Murray Ph.D.; , Roman

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

    Office of Scientific and Technical Information (OSTI)

    US Dept of Energy Office of Scientific and Technical Information - 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

  10. The Research and Development of the Radioisotope Energy Conversion System

    SciTech Connect (OSTI)

    Steinfelds, E.V.; Ghosh, T.K.; Prelas, M.A.; Tompson, R.V.; Loyalka, S.K.

    2001-06-17

    The project of developing radioisotope energy conversion system (RECS) involves analytical computational assisted design and modeling and also laboratory research. The computational analysis consists of selecting various geometries and materials for the main RECS container and the internally located radioisotope, computing the fluxes of the beta{sup (-)} particles and of the visible (or ultraviolet) photons produced by the beta{sup (-)}s, computing the transport of these photons to the photovoltaic cells, and computing the overall efficiency of useful conversion of the radioisotope power.

  11. Center on Nanostructuring for Efficient Energy Conversion - Contact

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

    Information CNEEC logo-large Contact Information If you have questions or comments regarding Center programs, please contact: Elizabeth Mattson 440 Escondido Mall, 02-530 Building 530, Room 226 Stanford, CA 94305-3030 Tel 650.723.6488 Fax 650.723.5034 emattson(at)stanford.edu Center on Nanostructuring for Efficient Energy Conversion is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences Stanford Home | Engineering

  12. SPS energy conversion and power management workshop. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

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

  13. Novel, Integrated Reactor / Power Conversion System (LMR-AMTEC)

    SciTech Connect (OSTI)

    Pablo Rubiolo, Principal Investigator

    2003-03-21

    The main features of this project were the development of a long life (up to 10 years) Liquid Metal Reactor (LMR) and a static conversion subsystem comprising an Alkali Metal Thermal-to-Electric (AMTEC) topping cycle and a ThermoElectric (TE) Bottom cycle. Various coupling options of the LMR with the energy conversion subsystem were explored and, base in the performances found in this analysis, an Indirect Coupling (IC) between the LMR and the AMTEC/TE converters with Alkali Metal Boilers (AMB) was chosen as the reference design. The performance model of the fully integrated sodium-and potassium-AMTEC/TE converters shows that a combined conversion efficiency in excess of 30% could be achieved by the plant. (B204)

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

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information 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

  15. Design of nitride semiconductors for solar energy conversion

    SciTech Connect (OSTI)

    Zakutayev, Andriy

    2016-01-01

    Nitride semiconductors are a promising class of materials for solar energy conversion applications, such as photovoltaic and photoelectrochemical cells. Nitrides can have better solar absorption and electrical transport properties than the more widely studied oxides, as well as the potential for better scalability than other pnictides or chalcogenides. In addition, nitrides are also relatively unexplored compared to other chemistries, so they provide a great opportunity for new materials discovery. This paper reviews the recent advances in the design of novel semiconducting nitrides for solar energy conversion technologies. Both binary and multinary nitrides are discussed, with a range of metal chemistries (Cu3N, ZnSnN2, Sn3N4, etc.) and crystal structures (delafossite, perovskite, spinel, etc.), including a brief overview of wurtzite III-N materials and devices. The current scientific challenges and promising future directions in the field are also highlighted.

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

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

    Center (LMI-EFRC) Research Group 1 Research Group 2 Research Group 3 Research Group 4 Research Highlights Facilities Publications Lectures & Tutorials Authorship Tools Research Groups Research efforts in the LMI-EFRC are aligned with one or more of the following Research Groups (RGs): Complex Architecture and Self-Architected Absorbers Optics for Spontaneous Emission and Absorption Enhancement Full Spectrum Photon Conversion Transformation Optics for Photovoltaics

  17. Gang Chen | Solid State Solar Thermal Energy Conversion

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

    Gang Chen Principal Investigator Gang Chen Department Head, MIT Mechanical Engineering Carl Richard Soderberg Professor of Power Engineering Director of Pappalardo Micro and Nano Engineering Laboratories Phone: 617.253.0006 Fax: 617.258.6156 Email: gchen2@mit.edu Web: http://web.mit.edu/nanoengineering Administrative Contact: Keke Xu Phone: 617.253.2201 Email: kekex@mit.edu Research Interests: Micro- and nanoscale heat transfer and energy conversion with applications in thermoelectrics,

  18. 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 material systems with the goal of producing highly efficient materials and morphological structures for OPVs. Our efforts to develop and to maximize the performance/efficiency of OPVs include: (1) a combined experimental/ computational approach to the molecular design and synthesis of new materials; (2) design and develop

  19. Center on Nanostructuring for Efficient Energy Conversion - Research

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

    Research Concept of the integrated Center CNEEC's integrated center concept The overarching goal of the Center is to increase the efficiency of energy conversion devices by manipulating materials at the nanometer scale. We advance scientific concepts and develop fabrication and characterization methodologies to understand how nanostructuring can optimize transport, light absorption, and reaction kinetics and thermodynamics in materials. Our research aims to provide a scientific foundation of

  20. Selective Conversion of Lignin into Simple Aromatic Compounds - Energy

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

    Innovation Portal Selective Conversion of Lignin into Simple Aromatic Compounds Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary Lignin is a major component of non-edible biomass (15-30 percent by weight; 40 percent by energy). It is a cheap byproduct of pulp and biofuel production and is one of the few naturally occurring sources of high-volume aromatic compounds. Converting lignin's complex biopolymer structure into simple organic

  1. Thermophotovoltaic energy conversion using photonic bandgap selective emitters

    DOE Patents [OSTI]

    Gee, James M.; Lin, Shawn-Yu; Fleming, James G.; Moreno, James B.

    2003-06-24

    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.

  2. July 2013 Most Viewed Documents for Energy Storage, Conversion, And

    Office of Scientific and Technical Information (OSTI)

    Utilization | OSTI, US Dept of Energy Office of Scientific and Technical Information July 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) 567 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) 142 Seventh Edition Fuel Cell Handbook NETL (2004) 133 An Improved Method of Manufacturing

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

    SciTech Connect (OSTI)

    L.C. BROWN

    2001-09-30

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

  4. Advanced Energy Conversion LLC AEC | Open Energy Information

    Open Energy Info (EERE)

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

  5. Transition Metal Oxide Alloys as Potential Solar Energy Conversion Materials

    SciTech Connect (OSTI)

    Toroker, Maytal; Carter, Emily A.

    2013-02-21

    First-row transition metal oxides (TMOs) are inexpensive potentia alternative materials for solar energy conversion devices. However, some TMOs, such as manganese(II) oxide, have band gaps that are too large for efficiently absorbing solar energy. Other TMOs, such as iron(II) oxide, have conduction and valence band edges with the same orbital character that may lead to unfavorably high electronhole recombination rates. Another limitation of iron(II) oxide is that the calculated valence band edge is not positioned well for oxidizing water. We predict that key properties, including band gaps, band edge positions, and possibly electronhole recombination rates, may be improved by alloying TMOs that have different band alignments. A new metric, the band gap center offset, is introduced for simple screening of potential parent materials. The concept is illustrated by calculating the electronic structure of binary oxide alloys that contain manganese, nickel, iron, zinc, and/or magnesium, within density functional theory (DFT)+U and hybrid DFT theories. We conclude that alloys of iron(II) oxide are worth evaluating further as solar energy conversion materials.

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

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

    Center (LMI-EFRC) LMI Director Harry Atwater and LMI 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 Materials Science at Caltech as well as Director of the LMI-EFRC and of the Resnick Institute, and LMI international collaborator Albert Polman of the Dutch Research Institute AMOLF have been awarded the 2012 Eni Award in Renewable and Nonconventional Energy. The

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

    Open Energy Info (EERE)

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

  8. Penrose Landfill Gas Conversion LLC | Open Energy Information

    Open Energy Info (EERE)

    Page Edit with form History Penrose Landfill Gas Conversion LLC Jump to: navigation, search Name: Penrose Landfill Gas Conversion LLC Place: Los Angeles, California Product: Owner...

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

    SciTech Connect (OSTI)

    Green, H.J. ); Guenther, P.R. )

    1990-09-01

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

  10. Heat transfer research for ocean thermal energy conversion

    SciTech Connect (OSTI)

    Kreith, F.; Bharathan, D.

    1988-02-01

    In this lecture an overview of the heat and mass-transfer phenomena of importance in ocean thermal energy conversion (OTEC) is presented with particular emphasis on open-cycle OTEC systems. Also included is a short historical review of OTEC developments in the past century and a comparison of open and closed-cycle thermodynamics. Finally, results of system analyses, showing the effect of plant size on cost and the near-term potential of using OTEC for combined power production and desalination systems, are briefly discussed.

  11. Heat transfer research for ocean thermal energy conversion

    SciTech Connect (OSTI)

    Kreith, F.; Bharathan, D.

    1987-03-01

    In this lecture an overview of the heat- and mass-transfer phenomena of importance in ocean thermal energy conversion (OTEC) is presented with particular emphasis on open-cycle OTEC systems. Also included is a short historical review of OTEC developments in the past century and a comparison of open- and closed-cycle thermodynamics. Finally, results of system analyses, showing the effect of plant size on cost and the near-term potential of using OTEC for combined power production and desalination systems are briefly discussed.

  12. New Approaches to Full Spectrum Solar Energy Conversion | U.S...

    Office of Science (SC) Website

    New Approaches to Full Spectrum Solar Energy Conversion Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC Events ...

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

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

    Center (LMI-EFRC) Workshop Agenda 7:30-8:30am On-Site Registration and Check-In Cahill Lobby 8:30-9:00am Welcome and Introduction Harry Atwater, California Institute of Technology Hameetman Auditorium 9:00-9:40am The DOE SunShot Initiative: Revitalizing American Competitiveness in Solar Energy Minh Le, U.S. Department of Energy Hameetman Auditorium 9:40-10:20am Advancing Efficiency and Scale in Concentrating Photovoltaics Geoffrey Kinsey, Fraunhofer CSE Hameetman Auditorium 10:20-10:40am

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

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

    Center (LMI-EFRC) EFRC Science in Ten Hundred and One Words The Ten Hundred and One Word Challenge invited the 46 Energy Frontier Research Centers to represent their science in images, cartoons, photos, words and original paintings, but any descriptions or words could only use the 1000 most commonly used words in the English language, with the addition of one word important to each of the EFRCs and the mission of DOE: energy. You can vote for your favorite entry from July 3-16, and the

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

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

    Center (LMI-EFRC) - Eli Yablonovitch RG1 Leader Eli Yablonovitch Eli Yablonovitch, Director of the NSF Center for Energy Efficient Electronics Science (E 3S) Lawrence Berkeley National Laboratory Eli Yablonovitch is the RG1 Leader in the LMI-EFRC. After a career in industry and in Universities, he is now Professor of Electrical Engineering and Computer Sciences at UC Berkeley, where he holds the James & Katherine Lau Chair in Engineering. He is also Director of the NSF Center for Energy

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

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

    Center (LMI-EFRC) 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.

  17. Proceedings of the Chornobyl phytoremediation and biomass energy conversion workshop

    SciTech Connect (OSTI)

    Hartley, J.; Tokarevsky, V.

    1998-06-01

    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.

  18. Wind energy conversion system analysis model (WECSAM) computer program documentation

    SciTech Connect (OSTI)

    Downey, W T; Hendrick, P L

    1982-07-01

    Described is a computer-based wind energy conversion system analysis model (WECSAM) developed to predict the technical and economic performance of wind energy conversion systems (WECS). The model is written in CDC FORTRAN V. The version described accesses a data base containing wind resource data, application loads, WECS performance characteristics, utility rates, state taxes, and state subsidies for a six state region (Minnesota, Michigan, Wisconsin, Illinois, Ohio, and Indiana). The model is designed for analysis at the county level. The computer model includes a technical performance module and an economic evaluation module. The modules can be run separately or together. The model can be run for any single user-selected county within the region or looped automatically through all counties within the region. In addition, the model has a restart capability that allows the user to modify any data-base value written to a scratch file prior to the technical or economic evaluation. Thus, any user-supplied data for WECS performance, application load, utility rates, or wind resource may be entered into the scratch file to override the default data-base value. After the model and the inputs required from the user and derived from the data base are described, the model output and the various output options that can be exercised by the user are detailed. The general operation is set forth and suggestions are made for efficient modes of operation. Sample listings of various input, output, and data-base files are appended. (LEW)

  19. Solid State Energy Conversion Alliance 2nd Annual Workshop Proceedings

    SciTech Connect (OSTI)

    National Energy Technology Laboratory

    2001-03-30

    The National Energy Technology Laboratory (NETL) and the Pacific Northwest National Laboratory (PNNL) are pleased to provide the proceedings of the second annual Solid State Energy Conversion Alliance (SECA) Workshop held on March 29-30, 2001 in Arlington. The package includes the presentations made during the workshop, a list of participants, and the results of the breakout sessions. Those sessions covered stack materials and processes, power electronics, balance of plant and thermal integration, fuel processing technologies, and stack and system performance modeling. The breakout sessions have been reported as accurately as possible; however, due to the recording and transcription process errors may have occurred. If you note any significant omissions or wish to provide additional information, we welcome your comments and hope that all stakeholder groups will use the enclosed information in their planning endeavors.

  20. OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT

    SciTech Connect (OSTI)

    Sands, M.Dale

    1980-08-01

    Significant acccrmplishments in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power within this decade with subsequent large scale commercialization following by the turn of the century. Under U.S. Department of Energy funding, the Oceanic Engineering Operations of Interstate Electronics Corporation has prepared several OTEC Environmental Assessments over the past years, in particular, the OTEC Programmatic Environmental Assessment. The Programmatic EA considers several technological designs (open- and closed-cycle), plant configuratlons (land-based, moored, and plant-ship), and power usages (baseload electricity, ammonia and aluminum production). Potential environmental impacts, health and safetv issues and a status update of the institutional issues as they influence OTEC deployments, are included.

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

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

    Center (LMI-EFRC) Facilities Facilities, Capabilities, and Techniques of the LMI-EFRC These are available for use by all LMI researchers At Caltech Large-area vapor-liquid-solid microwire growth Cambridge Nanotech Atomic Layer Deposition Integrating sphere Ultrafast Pump-Probe System At LBL Nanocrystal synthesis Photoelectrochemical etching At UIUC Proximity field nano-patterning Direct ink writing Malvern Nano Zetasizer AJA e-beam evaporator DOE Center facilities National Energy Research

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

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

    Center (LMI-EFRC) Recent Research Highlights nature materials cover advanced energy materials cover nature materials cover advanced materials cover nature materials cover Laser-Assisted Direct Ink Writing of Metallic Architectures (Jennifer Lewis group, Harvard) May 2016 Conformal Flexible Dielectric Metasurfaces (Andrei Faraon group, Caltech) April 2016 Active Thermal Extraction of Near-Field Thermal Radiation (Austin Minnich group, Caltech) March 2016 Active Mixing of Complex Fluids at the

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

    SciTech Connect (OSTI)

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

    1996-12-31

    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}.

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

    DOE Patents [OSTI]

    Brown, Edward J.; Baldasaro, Paul F.; Dziendziel, Randolph J.

    1997-01-01

    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.

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

    DOE Patents [OSTI]

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

    1997-12-23

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

  6. Siting handbook for small wind energy conversion systems

    SciTech Connect (OSTI)

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

    1980-03-01

    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.

  7. Conversion of Biomass Sugars via Fermentation - Energy Innovation Portal

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

    Research & Development » Conversion Technologies Conversion Technologies The strategic goal of Conversion Research and Development (R&D) is to develop technologies for converting feedstocks into commercially viable liquid transportation fuels, as well as bioproducts and biopower. The diversity of the biomass resource requires the development of multiple conversion technologies that can efficiently deal with the broad range of feedstock materials, as well as their physical and chemical

  8. Biological Conversion of Sugars To Hydrocarbons | Department of Energy

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

    To Hydrocarbons Biological Conversion of Sugars To Hydrocarbons PDF explaining the biological process of bioenergy Biological Conversion of Sugars To Hydrocarbons (190.69 KB) More Documents & Publications Catalytic Upgrading Sugars To Hydrocarbons Catalytic Upgrading of Sugars to Hydrocarbons Technology Pathway Biological Conversion of Sugars to Hydrocarbons Technology Pathway

  9. Waterborne noise due to ocean thermal energy conversion plants

    SciTech Connect (OSTI)

    Janota, C.P.; Thompson, D.E.

    1983-07-01

    Public law reflects a United States national commitment to the rapid development of Ocean Thermal Energy Conversion (OTEC) as an alternate energy source. OTEC plants extract the stored solar energy from the world's tropical seas and in so doing pose a potential for altering the character of the ambient noise there. The sources of noise from an OTEC plant are analyzed in the context of four configurations, two of which were built and tested, and two which are concepts for future full-scale moored facilities. The analysis indicates that the noise resulting from the interaction of turbulence with the seawater pumps is expected to dominate in the frequency range 10 Hz to 1 kHz. Measured radiated noise data from the OTEC-I research plant, located near the island of Hawaii, are compared with the analysis. The measured data diverge from the predicted levels at frequencies above about 60 Hz because of dominant non-OTEC noise sources on this platform. However, at low frequency, the measured broadband noise is comparable to that predicted.

  10. Direct conversion technology. Annual summary report CY 1991, January 1, 1991--December 31, 1991

    SciTech Connect (OSTI)

    Massier, P.F.; Back, L.H.; Ryan, M.A.; Fabris, G.

    1992-01-07

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC) and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1, 1991 through December 31, 1991. Research on AMTEC and on LMMHD was initiated during October 1987. Reports prepared on previous occasions (Refs. 1--5) contain descriptive and performance discussions of the following direct conversion concepts: thermoelectric, pyroelectric, thermionic, thermophotovoltaic, thermoacoustic, thermomagnetic, thermoelastic (Nitionol heat engine); and also, more complete descriptive discussions of AMTEC and LMMHD systems.

  11. Methods for locating ground faults and insulation degradation condition in energy conversion systems

    DOE Patents [OSTI]

    Agamy, Mohamed; Elasser, Ahmed; Galbraith, Anthony William; Harfman Todorovic, Maja

    2015-08-11

    Methods for determining a ground fault or insulation degradation condition within energy conversion systems are described. A method for determining a ground fault within an energy conversion system may include, in part, a comparison of baseline waveform of differential current to a waveform of differential current during operation for a plurality of DC current carrying conductors in an energy conversion system. A method for determining insulation degradation within an energy conversion system may include, in part, a comparison of baseline frequency spectra of differential current to a frequency spectra of differential current transient at start-up for a plurality of DC current carrying conductors in an energy conversion system. In one embodiment, the energy conversion system may be a photovoltaic system.

  12. Designing New Alloys to be Used in New Energy Conversion Technologies

    ScienceCinema (OSTI)

    Dr. Omer Dogan

    2010-09-01

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

  13. Ocean thermal energy conversion: Historical highlights, status, and forecast

    SciTech Connect (OSTI)

    Dugger, G.L.; Avery, W.H.; Francis, E.J.; Richards, D.

    1983-07-01

    In 1881, d'Arsonval conceived the closed-Rankine-cycle ocean thermal energy conversion (OTEC) system in which a working fluid is vaporized by heat exchange with cold water drawn from a 700-1200 m depth. In 1930, Claude demonstrated an open-cycle process in Cuba. Surface water was flash-vaporized at 3 kPa to drive a turbine directly (no secondary working fluid) and then was condensed by direct contact with water drawn from a 700-m depth through a 1.6m-diam, 1.75-km-long cold-water pipe (CWP). From a delta T of 14/sup 0/C his undersized turbine generated 22 kW. In 1956 a French team designed a 3.5-MW (net) open-cycle plant for installation off Abidjan on the Ivory Coast of Africa and demonstrated the necessary CWP deployment. The at-sea demonstrations by Mini-OTEC and OTEC-1 and other recent advances in OTEC technology summarized herein represent great progress. All of the types of plants proposed for the DOE's PON program may be worthy of development; certainly work on a grazing plant is needed. Our estimates indicate that the U.S. goals established by Public Law 96-310 leading to 10 GW of OTEC power and energy product equivalents by 1999 are achievable, provided that adequate federal financial incentives are retained to assure the building of the first few plants.

  14. Hydrogen Production: Microbial Biomass Conversion | Department of Energy

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

    Microbial Biomass Conversion Hydrogen Production: Microbial Biomass Conversion Photo of a fermentation reactor Microbial biomass conversion processes take advantage of the ability of microorganisms to consume and digest biomass and release hydrogen. Depending on the pathway, this research could result in commercial-scale systems in the mid- to long-term timeframe that could be suitable for distributed, semi-central, or central hydrogen production scales, depending on the feedstock used. How

  15. Trends in Contractor Conversion Rates | Department of Energy

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

    Contractor Conversion Rates Trends in Contractor Conversion Rates Better Buildings Residential Network Workforce / Business Partners Peer Exchange Call Series: Trends in Contractor Conversion Rates, Call Slides and Discussion Summary, December 5, 2013. Call Slides and Discussion Summary (1.12 MB) More Documents & Publications Better Buildings -- Concierge Programs for Contractors -- They're Not Just for Consumers anymore Programs and Contractors -Top Tips for Successful Relationships! (101)

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

    Open Energy Info (EERE)

    Services Product: California-based company that provides services and products for electric cars. References: Left Coast Electric (Formerly Left Coast Conversions)1 This...

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

    SciTech Connect (OSTI)

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

    1981-02-01

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

  18. Photochemical conversion of solar energy in the environment. Book chapter

    SciTech Connect (OSTI)

    Zepp, R.G.

    1991-01-01

    Past research on photochemistry in the environment has focused on gas phase reactions in the atmosphere. Recently, however, environmentally significant photoreactions have been discovered in natural waters (i.e., the sea, lakes, and rivers), on soil surfaces, and in atmospheric condensed phases. These new investigations have been stimulated in part by interest in developing a scientific understanding of the role of photochemical processes in the biogeochemical cycles of various elements. In addition, other studies have explored the role of natural photochemical processes in cleansing the environemnt of various waste materials or, in some cases, in converting the wastes to more toxic substances. In the paper, current research results on the photochemical conversion of solar energy in aquatic environments and on soil and metal oxide surfaces are presented. Rate equations and products for selected homogeneous and heterogeneous photoreactions that occur in these systems are described. Data are presented for direct and sensitized photoreactions and for sunlight-initiated free radical reactions. (Copyright (c) 1991 Kluwer Academic Publishers.)

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

    SciTech Connect (OSTI)

    Authors, Various

    1980-01-01

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

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

    DOE Patents [OSTI]

    Skeist, S. Merrill; Baker, Richard H.

    2006-01-10

    An electro-mechanical energy conversion system coupled between an energy source and an energy load comprising an energy converter device including a permanent magnet induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer to control the flow of power or energy through the permanent magnetic induction machine.

  1. 30 DIRECT ENERGY CONVERSION; 20 FOSSIL-FUELED POWER PLANTS; 32...

    Office of Scientific and Technical Information (OSTI)

    Lee, G.T.; Sudhoff, F.A. 30 DIRECT ENERGY CONVERSION; 20 FOSSIL-FUELED POWER PLANTS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; FUEL CELL POWER PLANTS; GAS TURBINE...

  2. New Approaches to Full Spectrum Solar Energy Conversion | U.S. DOE Office

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

    of Science (SC) New Approaches to Full Spectrum Solar Energy Conversion Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC Events DOE Announcements Publications History Contact BES Home 08.11.15 New Approaches to Full Spectrum Solar Energy Conversion Print Text Size: A A A Subscribe FeedbackShare Page On September 3, 2015 from 8:30 - 10:30 am (PDT) the Light-Materials Interactions in Energy Conversion EFRC at Caltech

  3. Nx-TEC: Next-Generation Thermionic Solar Energy Conversion | Department of

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

    Energy Nx-TEC: Next-Generation Thermionic Solar Energy Conversion Nx-TEC: Next-Generation Thermionic Solar Energy Conversion This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23-25, 2013 near Phoenix, Arizona. csp_review_meeting_042313_melosh.pdf (3.66 MB) More Documents & Publications Next-Generation Thermionic Solar Energy Conversion - FY13 Q2 Final Report - Technology Enabling Ultra High Concentration Multi-Junction Cells

  4. Summary of State-of-the-Art Power Conversion Systems for Energy Storage Applications

    SciTech Connect (OSTI)

    Atcitty, S.; Gray-Fenner, A.; Ranade, S.

    1998-09-01

    The power conversion system (PCS) is a vital part of many energy storage systems. It serves as the interface between the storage device, an energy source, and an AC load. This report summarizes the results of an extensive study of state-of-the-art power conversion systems used for energy storage applications. The purpose of the study was to investigate the potential for cost reduction and performance improvement in these power conversion systems and to provide recommendations for fiture research and development. This report provides an overview of PCS technology, a description of several state-of-the-art power conversion systems and how they are used in specific applications, a summary of four basic configurations for l:he power conversion systems used in energy storage applications, a discussion of PCS costs and potential cost reductions, a summary of the stancku-ds and codes relevant to the technology, and recommendations for future research and development.

  5. Pyroelectric Energy Scavenging Techniques for Self-Powered Nuclear Reactor Wireless Sensor Networks

    SciTech Connect (OSTI)

    Hunter, Scott Robert; Lavrik, Nickolay V; Datskos, Panos G; Clayton, Dwight A

    2014-01-01

    Recent advances in technologies for harvesting waste thermal energy from ambient environments present an opportunity to implement truly wireless sensor nodes in nuclear power plants. These sensors could continue to operate during extended station blackouts and during periods when operation of the plant s internal power distribution system has been disrupted. The energy required to power the wireless sensors must be generated using energy harvesting techniques from locally available energy sources, and the energy consumption within the sensor circuitry must therefore be low to minimize power and hence the size requirements of the energy harvester. Harvesting electrical energy from thermal energy sources can be achieved using pyroelectric or thermoelectric conversion techniques. Recent modeling and experimental studies have shown that pyroelectric techniques can be cost competitive with thermoelectrics in self powered wireless sensor applications and, using new temperature cycling techniques, has the potential to be several times as efficient as thermoelectrics under comparable operating conditions. The development of a new thermal energy harvester concept, based on temperature cycled pyroelectric thermal-to-electrical energy conversion, is outlined. This paper outlines the modeling of cantilever and pyroelectric structures and single element devices that demonstrate the potential of this technology for the development of high efficiency thermal-to-electrical energy conversion devices.

  6. Pyroelectric Energy Scavenging Techniques for Self-Powered Nuclear Reactor Wireless Sensor Networks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hunter, Scott Robert; Lavrik, Nickolay V; Datskos, Panos G; Clayton, Dwight A

    2014-11-01

    Recent advances in technologies for harvesting waste thermal energy from ambient environments present an opportunity to implement truly wireless sensor nodes in nuclear power plants. These sensors could continue to operate during extended station blackouts and during periods when operation of the plant s internal power distribution system has been disrupted. The energy required to power the wireless sensors must be generated using energy harvesting techniques from locally available energy sources, and the energy consumption within the sensor circuitry must therefore be low to minimize power and hence the size requirements of the energy harvester. Harvesting electrical energy from thermalmore » energy sources can be achieved using pyroelectric or thermoelectric conversion techniques. Recent modeling and experimental studies have shown that pyroelectric techniques can be cost competitive with thermoelectrics in self powered wireless sensor applications and, using new temperature cycling techniques, has the potential to be several times as efficient as thermoelectrics under comparable operating conditions. The development of a new thermal energy harvester concept, based on temperature cycled pyroelectric thermal-to-electrical energy conversion, is outlined. This paper outlines the modeling of cantilever and pyroelectric structures and single element devices that demonstrate the potential of this technology for the development of high efficiency thermal-to-electrical energy conversion devices.« less

  7. Pyroelectric Energy Scavenging Techniques for Self-Powered Nuclear Reactor Wireless Sensor Networks

    SciTech Connect (OSTI)

    Hunter, Scott Robert; Lavrik, Nickolay V; Datskos, Panos G; Clayton, Dwight A

    2014-11-01

    Recent advances in technologies for harvesting waste thermal energy from ambient environments present an opportunity to implement truly wireless sensor nodes in nuclear power plants. These sensors could continue to operate during extended station blackouts and during periods when operation of the plant s internal power distribution system has been disrupted. The energy required to power the wireless sensors must be generated using energy harvesting techniques from locally available energy sources, and the energy consumption within the sensor circuitry must therefore be low to minimize power and hence the size requirements of the energy harvester. Harvesting electrical energy from thermal energy sources can be achieved using pyroelectric or thermoelectric conversion techniques. Recent modeling and experimental studies have shown that pyroelectric techniques can be cost competitive with thermoelectrics in self powered wireless sensor applications and, using new temperature cycling techniques, has the potential to be several times as efficient as thermoelectrics under comparable operating conditions. The development of a new thermal energy harvester concept, based on temperature cycled pyroelectric thermal-to-electrical energy conversion, is outlined. This paper outlines the modeling of cantilever and pyroelectric structures and single element devices that demonstrate the potential of this technology for the development of high efficiency thermal-to-electrical energy conversion devices.

  8. Light-Material Interactions in Energy Conversion (LMI) | U.S. DOE Office of

    Office of Science (SC) Website

    Science (SC) Light-Material Interactions in Energy Conversion (LMI) Energy Frontier Research Centers (EFRCs) EFRCs Home Centers EFRC External Websites Research Science Highlights News & Events Publications History Contact BES Home Centers Light-Material Interactions in Energy Conversion (LMI) Print Text Size: A A A FeedbackShare Page LMI Header Director Ralph Nuzzo Lead Institution California Institute of Technology Year Established 2009 Mission To tailor the morphology, complex

  9. 2008 Annual Merit Review Results Summary - 6. Solid State Energy Conversion

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

    | Department of Energy 6. Solid State Energy Conversion 2008 Annual Merit Review Results Summary - 6. Solid State Energy Conversion DOE Vehicle Technologies Annual Merit Review 2008_merit_review_6.pdf (447.44 KB) More Documents & Publications 2008 Annual Merit Review Results Summary - 14. Vehicle Systems and Simulation 2008 Annual Merit Review Results Summary - 12. Propulsion Materials 2008 Annual Merit Review Results Summary - 5. Advanced Power Electronics

  10. Department of Energy Cites BWXT Conversion Services, LLC for Worker Safety

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

    and Health Program Violations | Department of Energy BWXT Conversion Services, LLC for Worker Safety and Health Program Violations Department of Energy Cites BWXT Conversion Services, LLC for Worker Safety and Health Program Violations July 13, 2016 - 4:43pm Addthis News Media Contact 202-586-4940 DOENews@hq.doe.gov WASHINGTON - The U.S. Department of Energy (DOE) today issued a Preliminary Notice of Violation (PNOV) to BWXT Conversion Services, LLC (BWCS) for violations of DOE worker safety

  11. 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

  12. power conversion efficiency

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

    power conversion efficiency - Sandia Energy Energy Search Icon Sandia Home Locations ... Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar ...

  13. Analysis of energy conversion systems, including material and global warming aspects

    SciTech Connect (OSTI)

    Zhang, M.; Reistad, G.M.

    1998-12-31

    This paper addresses a method for the overall evaluation of energy conversion systems, including material and global environmental aspects. To limit the scope of the work reported here, the global environmental aspects have been limited to global warming aspects. A method is presented that uses exergy as an overall evaluation measure of energy conversion systems for their lifetime. The method takes the direct exergy consumption (fuel consumption) of the conventional exergy analyses and adds (1) the exergy of the energy conversion system equipment materials, (2) the fuel production exergy and material exergy, and (3) the exergy needed to recover the total global warming gases (equivalent) of the energy conversion system. This total, termed Total Equivalent Resource Exergy (TERE), provides a measure of the effectiveness of the energy conversion system in its use of natural resources. The results presented here for several example systems illustrate how the method can be used to screen candidate energy conversion systems and perhaps, as data become more available, to optimize systems. It appears that this concept may be particularly useful for comparing systems that have quite different direct energy and/or environmental impacts. This work should be viewed in the context of being primarily a concept paper in that the lack of detailed data available to the authors at this time limits the accuracy of the overall results. The authors are working on refinements to data used in the evaluation.

  14. S3TEC Annual Workship | Solid State Solar Thermal Energy Conversion

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

    Saturday Feb 13, 2016 9:00am to 8:00pm Location: MIT Faculty Club Annual Workshop - Solid State Solar Thermal Energy Conversion February 13, 2016 9:00 am-8:00 pm Location: MIT ...

  15. Funding Opportunity Announcement: Recovery Act … Energy Efficiency and Conversation Block Grants … Formula Grants

    Office of Energy Efficiency and Renewable Energy (EERE)

    Funding opportunity announcement for the Energy Efficiency and Conversation Block Grants, an opportunity open from March 26, 2009 to May 26, 2009 for state applicants and June 25, 2009 for local government and tribal applicants.

  16. Better Biomass Conversion with Recyclable GVL Solvent - Energy Innovation

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

    Portal Better Biomass Conversion with Recyclable GVL Solvent Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary To recover useful carbohydrates locked in biomass, molecular bonds must be broken while avoiding further reaction of the resulting glucose and xylose sugars. This is a challenge because glucose can degrade quicker than it is produced. Fast, hot reactions try to minimize such degradation, but are impractical. Expensive catalysts

  17. Direct Conversion of Biomass into Transportation Fuels - Energy Innovation

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

    Portal Direct Conversion of Biomass into Transportation Fuels Los Alamos National Laboratory Contact LANL About This Technology Technology Marketing SummaryLos Alamos National Laboratory is developing a portfolio of technologies related to catalytic processes for converting oligosaccharides into hydrocarbons under mild conditions.DescriptionWe are seeking a co-development partner interested in teaming to further develop the technology, including pursuit of Federal-funding opportunities, and

  18. Science Highlights- Center for Solar and Thermal Energy Conversion

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

    0 Click on icons for highlight slides. Click on titles or citations for link to papers. Structural Order-Disorder Transitions and Phonon Conductivity of Partially Filled Skutterudites Hyoungchul Kim, Massoud Kaviany, John C. Thomas, Anton van der Ven, Ctirad Uher, and Baoling Huang Physical Review Letters, 105, 265901 (2010) Filled skutterudites are among the most promising of novel thermoelectric materials for power conversion applications. Their effectiveness can be further improved by finding

  19. Catalytic Conversion of Bioethanol to Hydrocarbons - Energy Innovation

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

    Portal Vehicles and Fuels Vehicles and Fuels Startup America Startup America Biomass and Biofuels Biomass and Biofuels Advanced Materials Advanced Materials Find More Like This Return to Search Catalytic Conversion of Bioethanol to Hydrocarbons Oak Ridge National Laboratory Contact ORNL About This Technology Publications: PDF Document Publication 11-G00219_ID2414.pdf (629 KB) Technology Marketing SummaryA method for catalytically converting an alcohol to a hydrocarbon without requiring

  20. First-Principles Simulations of Functional Materials for Energy Conversion

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

    Revolution for Energy Sector | Department of Energy First-Ever Energy Open Data Roundtable Catalyzes Value of Big Data Revolution for Energy Sector First-Ever Energy Open Data Roundtable Catalyzes Value of Big Data Revolution for Energy Sector May 1, 2015 - 3:10pm Addthis Jon Weers (left), Debbie Brodt-Giles (center), and Kristen Honey were among the 16 recipients of Energy Innovation Awards at the networking breakfast before the first-ever Energy Open Data Roundtable on April 29 in

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

    Office of Scientific and Technical Information (OSTI)

    Energy Technology Perspectives 2012: Executive Summary Portuguese version NONE Energy indicators for electricity production : comparing technologies and the nature of the ...

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

    Office of Scientific and Technical Information (OSTI)

    Inc) (2008) Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation Akbari, Hashem (2005) Energy use and domestic hot water consumption - Phase 1. Final ...

  3. July 2013 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    of Urban HeatIslandMitigation Akbari, Hashem (2005) 68 Energy use and domestic hot water consumption - Phase 1. Final report Goldner, F.S. Energy Management & Research ...

  4. Thermophotovoltaic energy conversion system having a heavily doped n-type region

    DOE Patents [OSTI]

    DePoy, David M.; Charache, Greg W.; Baldasaro, Paul F.

    2000-01-01

    A thermophotovoltaic (TPV) energy conversion semiconductor device is provided which incorporates a heavily doped n-type region and which, as a consequence, has improved TPV conversion efficiency. The thermophotovoltaic energy conversion device includes an emitter layer having first and second opposed sides and a base layer in contact with the first side of the emitter layer. A highly doped n-type cap layer is formed on the second side of the emitter layer or, in another embodiment, a heavily doped n-type emitter layer takes the place of the cap layer.

  5. Taofang Zeng | Solid State Solar Thermal Energy Conversion

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

    Taofang Zeng Alumni Taofang Zeng Director of Center of Thermal Energy Systems, Huaneng Group Corporation, China

  6. Emma Anquillare | Solid State Solar Thermal Energy Conversion

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

    Emissions Associated with Electric Vehicle Charging: Impact of Electricity Generation Mix, Charging Infrastructure Availability, and Vehicle Type Joyce McLaren, John Miller, Eric O'Shaughnessy, Eric Wood, and Evan Shapiro National Renewable Energy Laboratory Technical Report NREL/TP-6A20-64852 April 2016 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at

  7. April 2013 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    Choi, S. U.-S. (1998) 100 Energy use and domestic hot water consumption - Phase 1. Final report Goldner, F.S. Energy Management & Research Associates, Brooklyn, NY (United ...

  8. Reliable Nanomanufacturing of Ge-Sn Alloys for Solar Energy Conversion |

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

    The Ames Laboratory Reliable Nanomanufacturing of Ge-Sn Alloys for Solar Energy Conversion Based on the US Department of Energy's International Energy Outlook 2014 report, global consumption of energy is estimated to rise by more than 50% between 2004 and 2030. One of the biggest scientific challenges is finding a clean renewable energy resource that will replace fossil fuels and avoid adverse effects on climate, environment, and health. This project aims to advance our understanding of the

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

    SciTech Connect (OSTI)

    Leenheer, Andrew J.; Narang, Prineha; Atwater, Harry A.; Lewis, Nathan S.

    2014-04-07

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of solar energy-conversion devices. Herein, we evaluate theoretically the energy-conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-energy barrier height. The Fowler model, in all cases, predicts solar energy-conversion efficiencies of <1% for such systems. However, relaxation of the assumptions regarding constraints on the escape cone and momentum conservation at the interface yields solar energy-conversion efficiencies as high as 1%10%, under some assumed (albeit optimistic) operating conditions. Under these conditions, the energy-conversion efficiency is mainly limited by the thermionic dark current, the distribution of hot electron energies, and hot-electron momentum considerations.

  10. Development of Feedforward Control Strategies for Wave Energy Conversion Technologies

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2015-12-29

      The future of wave energy will depend on developing a new generation of wave energy converters (WECs) that maximize energy extraction and mitigate critical loads while reducing costs. Today’s WECs are relatively inefficient compared to their theoretical upper limit and lack the ability to concurrently maximize power capture and minimize structural loads.  The majority of existing WECs consist of fixed geometrical bodies relying predominantly on control of the power...