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in subjects: "Energy Conversion"  
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Solar thermal bowl concepts and economic comparisons for electricity generation

Description: This study is aimed at providing a relative comparison of the thermodynamic and economic performance in electric applications for fixed mirror distributed focus (FMDF) solar thermal concepts which have been studied and developed in the DOE solar thermal program. Following the completion of earlier systems comparison studies in the late 1970's there have been a number of years of progress in solar thermal technology. This progress includes developing new solar components, improving component and… more
Date: April 1, 1988
Creator: Williams, T. A.; Dirks, J. A.; Brown, D. R.; Antoniak, Z. I.; Allemann, R. T.; Coomes, E. P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Government policy and market penetration opportunities for US renewable energy technology in India and Pakistan

Description: Some US renewable energy industries are now looking abroad, especially to the rapidly developing Asia-Pacific region, in order to increase sales and expand markets. The developing world appears in principle to be an important market for renewable energy technologies. These international markets have proven extremely difficult to penetrate, and the US competitive position is threatened by strong, well-organized, government-supported competition from Japan and Western Europe. For example, US phot… more
Date: January 1, 1988
Creator: Sathaye, J. & Weingart, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy transfer processes in solar energy conversion

Description: The program involves the investigation of excitation transport and electron transfer in complex systems. In the area of electron transfer, we have been studying electron back transfer following donor-acceptor photoinduced electron transfer. We are addressing this problem both theoretically and experimentally. In the area of excitation transport, we have been examining transport in solid solutions, liquid solutions, and in clustered excitation transport systems. Again, we are pursuing both exper… more
Date: January 1, 1988
Creator: Fayer, M.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transactions of the fifth symposium on space nuclear power systems

Description: This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these paper include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
Date: January 1, 1988
Creator: El-Genk, M.S. & Hoover, M.D. (eds.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Kalina cycle and similar cycles for geothermal power production

Description: This report contains a brief discussion of the mechanics of the Kalina cycle and ideas to extend the concept to other somewhat different cycles. A modified cycle which has a potential heat rejection advantage but little or no performance improvement is discussed. Then, the results of the application of the Kalina cycle and the modified cycle to a geothermal application (360/degree/F resource) are discussed. The results are compared with published results for the Kalina cycle with high temperatu… more
Date: September 1, 1988
Creator: Bliem, C.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Unique mission options available with a megawatt-class nuclear electric propulsion system

Description: The advantages of using electric propulsion systems are well-known in the aerospace community with the most common being its high specific impulse, lower propellant requirements, and lower system mass. But these advantages may not be as important as the overall unique mission options electric propulsion makes possible, especially if the system is powered by a megawatt-class nuclear electric power source. Although the lack of suitable electric power systems has been a major drawback to electric … more
Date: October 1, 1988
Creator: Coomes, E.P.; McCauley, L.A.; Christian, J.L.; Gomez, M.A. & Wong, W.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Direct conversion technology: Annual summary report CY 1988

Description: 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 t… more
Date: December 1, 1988
Creator: Massier, P. F.; Bankston, C. P.; Fabris, G. & Kirol, L. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Efficiency calculations for the direct energy conversion system of the Cadarache neutral beam injectors

Description: A prototype energy conversion system is presently in operation at Cadarache, France. Such a device is planned for installation on each six neutral beam injectors for use in the Tore Supra experiment in 1989. We present calculations of beam performance that may influence design considerations. The calculations are performed with the DART charged particle beam code. We investigate the effects of cold plasma, direct energy conversion and neutral beam production. 4 refs., 6 figs., 4 tabs.
Date: June 8, 1988
Creator: White, R.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct-contact condensers for open-cycle OTEC applications: Model validation with fresh water experiments for structured packings

Description: The objective of the reported work was to develop analytical methods for evaluating the design and performance of advanced high-performance heat exchangers for use in open-cycle thermal energy conversion (OC-OTEC) systems. This report describes the progress made on validating a one-dimensional, steady-state analytical computer of fresh water experiments. The condenser model represents the state of the art in direct-contact heat exchange for condensation for OC-OTEC applications. This is expecte… more
Date: October 1, 1988
Creator: Bharathan, D.; Parsons, B.K. & Althof, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy technologies and the environment: Environmental information handbook

Description: This revision of Energy Technologies and the Environment reflects the changes in energy supply and demand, focus of environmental concern, and emphasis of energy research and development that have occurred since publication of the earlier edition in 1980. The increase in availability of oil and natural gas, at least for the near term, is responsible in part for a reduced emphasis on development of replacement fuels and technologies. Trends in energy development also have been influenced by an i… more
Date: October 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DOE/EPRI hybrid power system

Description: One of the primary objectives of the DOE Geopressured Geothermal Program is to improve methods for optimum energy extraction from geopressured reservoirs. Hybrid power systems which take advantage of the chemical and thermal energy content of geopressured fluids could improve conversion efficiency by 15 to 20% over the same amount of fuel and geothermal fluid processed separately. In a joint DOE/EPRI effort, equipment from the Direct Contact heat Exchange test facility at East Mesa is being mod… more
Date: January 1, 1988
Creator: Stiger, S. G.; Taylor, K. J. & Hughes, E. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced geothermal technologies

Description: Research and development in advanced technologies for geothermal energy production continue to increase the energy production options for the Nation. The high-risk investment over the past few years by the US Department of Energy in geopressured, hot dry rock, and magma energy resources is producing new means to lower production costs and to take advantage of these resources. The Nation has far larger and more regionally extensive geothermal resources than heretofore realized. At the end of a s… more
Date: January 1, 1988
Creator: Whetten, J. T.; Murphy, H. D.; Hanold, R. J.; Myers, C. W. & Dunn, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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