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  • ENERGY PRODUCTION AND CONVERSION  (2,380)
  • 1975-1979  (2,380)
  • 11
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    Background material for Working Group, appendix B (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA's Role Terrest. Energy R&T; 40 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 12
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    Energy: A continuing bibliography with indexes (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This bibliography lists 1096 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System from April 1, 1979 through June 30, 1979.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-SP-7043(22)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    Power factor controller (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The power factor controller, and energy-saving device for electric motors, is presented. The commercialization of the device is discussed and its applications are described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-80755 , P79-10188 , Feb 28, 1979; Washington, DC; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 14
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    A forecast of space technology. Part 4: Management of energy (1975)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Outlook for Space; 53 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 15
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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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  • 16
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    The Si ribbon crystal for the solar battery using the horizontal pull method (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A method utilizing a device to spray noble gases to cool the site of silicon crystal growth is described. The salient points are: (1) soft and uniform cooling was possible, (2) the length of the boundary surface of growth along the growth direction was made long over a wide width compared to the thickness, and (3) this made it possible to effectively remove the heat produced from solification. By using forced gas spraying on the solution surface in contact with the points of crystal growth, growth at the points of growth is enhanced and the rate of growth is speeded up.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-75503 , Natl. Conv. of Elec. Studies; Jan 01, 1979
    Format: application/pdf
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  • 17
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    Energy: A continuing bibliography with indexes, issue 12 (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This bibliography lists 584 reports, articles, and other documents introduced into the NASA scientific and technical information system from October 1, 1976 through December 31, 1976.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-SP-7043(12)
    Format: application/pdf
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  • 18
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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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  • 19
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    Space solar power. Description of concept, results of preliminary studies, requirements for evaluation (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The nation is actively pursuing alternate sources of energy because of the problems or concerns related to obtaining required energy for the future from oil, gas, nuclear, and coal sources. Solar energy is an obvious candidate for consideration. Its use in the past has been limited by the relative cost of collecting and converting solar energy into electrical power. The increasing costs of other energy sources will make solar energy more attractive. During recent years a new concept for the collection of solar energy has been developed. This concept involves the location of solar power stations in space. The concept, results of preliminary studies, and requirements for space evaluation of such a project are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-79436
    Format: application/pdf
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  • 20
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    Space power demonstration stations (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: NASA major planning decisions from 1955 to date are summarized and new concepts connected with the advent of the Space Transportation Systems (STS) are set forth. The future Shuttle utilizations are considered, from 'manned booster' function for space transportation to such operations as deployment of modules and stations and assembly of large structures in space. The permanent occupancy of space will be a major goal of the space systems development in the 1980's with the following main phases: (1) achievement of easy access to earth orbit by means of the Shuttle and Spacelab; (2) achievement of permanent occupancy (Space Stations); (3) self-sufficiency of man in space. New techniques of space operation will become possible, using much larger, complicated satellites and simplified ground stations. Orbital assembly of large stations, using a permanent base in orbit, will enable practical utilization of space systems for everyday needs. Particular attention is given to the space solar power concept, involving the location in space of large satellite systems. Results of the studies on Manned Orbital Systems Concept (MOSC) and some future possibilities of Space Stations are analyzed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: International Meeting on Utilization of Space Shuttle and Spacelab; Jun 02, 1976 - Jun 04, 1976; Bonn
    Format: text
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