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  • ENERGY PRODUCTION AND CONVERSION  (673)
  • 2020-2024
  • 1975-1979  (673)
  • 1978  (673)
  • 1
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    Space solar power - An energy alternative (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The space solar power concept is concerned with the use of a Space Power Satellite (SPS) which orbits the earth at geostationary altitude. Two large symmetrical solar collectors convert solar energy directly to electricity using photovoltaic cells woven into blankets. The dc electricity is directed to microwave generators incorporated in a transmitting antenna located between the solar collectors. The antenna directs the microwave beam to a receiving antenna on earth where the microwave energy is efficiently converted back to dc electricity. The SPS design promises 30-year and beyond lifetimes. The SPS is relatively pollution free as it promises earth-equivalence of 80-85% efficient ground-based thermal power plant.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Canadian Communications and Power Conference; Oct 18, 1978 - Oct 20, 1978; Montreal; Canada
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The NASA space power technology program (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The objective and planning of the NASA space power research and technology program are reviewed. The areas of research covered include photovoltaic energy conversion, chemical energy conversion and storage, thermal to electric conversion, environmental interactions and power systems management of distribution.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: ESA Photovoltaic Generators in Space; p 107-111
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    High efficiency low cost solar cell power (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: A concept for generating high-efficiency, low-cost, solar-cell power is outlined with reference to solar cell parameters, optical concentrators, and thermal control procedures. A design for a 12.5-kw power module for space operation is discussed noting the optical system, spectrum splitter, light conversion system, cell cooling, power conditioner, and tracking mechanism. It is found that for an unconcentrated array, efficiency approaches 60% when ten or more bandgaps are used. For a 12-band system, a computer program distributed bandgaps for maximum efficiency and equal cell currents. Rigid materials and thin films have been proposed for optical components and prisms, gratings, and dichroic mirrors have been recommended for spectrum splitting. Various radiator concepts are noted including that of Weatherston and Smith (1960) and Hedgepeth and Knapp (1978). The concept may be suitable for the Solar Power Satellite.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Astronautics and Aeronautics; 16; Nov. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Energy: A continuing bibliography with indexes, supplement 16, January 1978 (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This bibliography lists 1287 reports, articles, and other documents introduced into the NASA scientific and technical information system from October 1, 1977 through December 31, 1977.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-SP-7043(16)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Shuttle payload requirements and implementation procedure (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Payload safety guidelines and implementation procedures which were revised to include updated sections on energy storage batteries are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 421-429
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Satellite power systems /SPS/ overview (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The concept of using a number of very large satellites in geostationary equatorial orbit to convert solar energy into electricity and then to microwave energy transmitted back to earth is given a brief historical overview. The major program elements and organizational responsibilities in the DOE/NASA program for satellite power systems are schematized. The timetable calls for preliminary program recommendations in May, 1979, and final program recommendations in June, 1980. With the exception of the microwave effects studies, all work will be analytical. Overall funding for the effort has been set at $15.6 million.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Intersociety Energy Conversion Engineering Conference; Aug 20, 1978 - Aug 25, 1978; San Diego, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    NASA, DOE award contract for stirling engine development (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-NEWS-RELEASE-78-48 , P78-10046
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    A home central electric system (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A description is given of a device which can be used as a generator, and extracts energy from metals. The experiments are discussed, and it is concluded that the device may be a source of inexhaustible energy.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-75084
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Program THEK energy production units of average power and using thermal conversion of solar radiation (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: General studies undertaken by the C.N.R.S. in the field of solar power plants have generated the problem of building energy production units in the medium range of electrical power, in the order of 100 kW. Among the possible solutions, the principle of the use of distributed heliothermal converters has been selected as being, with the current status of things, the most advantageous solution. This principle consists of obtaining the conversion of concentrated radiation into heat by using a series of heliothermal conversion modules scattered over the ground; the produced heat is collected by a heat-carrying fluid circulating inside a thermal loop leading to a device for both regulation and storage.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-75369
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Satellite Power System (SPS) (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: Potential organizational options for a solar power satellite system (SPS) were investigated. Selection and evaluation criteria were determined to include timeliness, reliability, and adequacy to contribute meaningfully to the U.S. supply; political feasibility (both national and international); and cost effectiveness (including environmental and other external costs). Based on these criteria, four organizational alternatives appeared to offer reasonable promise as potential options for SPS. A large number of key issues emerged as being factors which would influence the final selection process. Among these issues were a variety having to do with international law, international institutions, environmental controls, economics, operational flexibility, congressional policies, commercial-vs-governmental ownership, national dedication, and national and operational stategic issues.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-80943 , TID-29094
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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