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Record Details

Record 27 of 17908
Solar thermionic power systems for terrestrial applications
Author and Affiliation:
Shimada, K.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Swerdling, M.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif., United States)
Abstract: The results of a feasibility study which showed that a low-temperature, high-efficient thermionic power system can efficiently convert solar energy to electrical energy without heat transport, as required by most solar thermal systems are described. A 3-dimensional (2-axis tracking) 93 sq m parabolic solar concentrator, consisting of mirrors on a foam glass substrate and designed to a concentration ratio (mirror area/aperture area) of 2000 is considered for producing a design temperature of 1100 C at an efficiency of 74%. A tracking subsystem must track the sun at an accuracy of a nominal plus or minus 1.0 degree for maximum use of the sun's energy. Each complete solar thermionic power system unit rated at about 20 kWe peak can generate approximately 48,000 kWh/yr. In addition, a thermal energy conversion system can be cascaded within the thermionic power system so that the high quality waste heat can be further utilized to increase the net electrical output. Potential applications of a solar thermionic power generation system are remote sites, apartment house complexes, heating and cooling, hydrogen production and large power stations.
Publication Date: Jan 01, 1977
Document ID:
19770066041
(Acquired Dec 01, 1995)
Accession Number: 77A48893
Subject Category: ENERGY PRODUCTION AND CONVERSION
Document Type: Conference Proceedings
Publication Information: (SEE A77-48701 23-44)
Publisher Information: United States
Meeting Information: Intersociety Energy Conversion Engineering Conference; 12th; August 28-September 2, 1977; Washington, DC
Contract/Grant/Task Num: NAS7-100
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENERGY TECHNOLOGY; SOLAR GENERATORS; THERMIONIC CONVERTERS; COST ESTIMATES; ENERGY CONVERSION EFFICIENCY; LIQUID METALS; MECHANICAL DRIVES; PARABOLIC REFLECTORS; PLASMA LOSS; POINTING CONTROL SYSTEMS; SOLAR COLLECTORS; WASTE ENERGY UTILIZATION
Imprint And Other Notes: In: Intersociety Energy Conversion Engineering Conference, 12th, Washington, D.C., August 28-September 2, 1977, Proceedings. Volume 2. (A77-48701 23-44) La Grange Park, Ill., American Nuclear Society, Inc., 1977, p. 1590-1601.
Availability Source: Other Sources
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