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Record Details

Record 23 of 3556
A high performance porous flat-plate solar collector
Author and Affiliation:
Lansing, F. L.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Clarke, V.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif., United States)
Reynolds, R.(Kentrol International, Inc., Pasadena, Calif., United States)
Abstract: A solar collector employing a porous matrix as a solar absorber and heat exchanger is presented and its application in solar air heaters is discussed. The collector is composed of a metallic matrix with a porous surface which acts as a large set of cavity radiators; cold air flows through the matrix plate and exchanges heat with the thermally stratified layers of the matrix. A steady-state thermal analysis of the collector is used to determine collector temperature distributions for the cases of an opaque surface matrix with total absorption of solar energy at the surface, and a diathermanous matrix with successive solar energy absorption at each depth. The theoretical performance of the porous flat plate collector is shown to exceed greatly that of a solid flat plate collector using air as the working medium for any given set of operational conditions. An experimental collector constructed using commercially available, low cost steel wool as the matrix has been found to have thermal efficiencies from 73 to 86%.
Publication Date: Aug 01, 1979
Document ID:
19800028268
(Acquired Nov 30, 1995)
Accession Number: 80A12438
Subject Category: ENERGY PRODUCTION AND CONVERSION
Document Type: Journal Article
Publication Information: vol. 4; Aug. 197
Publisher Information: United Kingdom
Contract/Grant/Task Num: NAS7-100
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Kentrol International, Inc.; Pasadena, CA, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENERGY CONVERSION EFFICIENCY; FLAT PLATES; POROUS PLATES; SOLAR COLLECTORS; SOLAR HEATING; SPACE HEATING (BUILDINGS); ENERGY TECHNOLOGY; HEAT BALANCE; OPTICAL PROPERTIES; PERFORMANCE TESTS; TEMPERATURE DISTRIBUTION
Imprint And Other Notes: Energy (UK), vol. 4, Aug. 1979, p. 685-694.
Miscellaneous Notes: p. 685-694
Availability Source: Other Sources
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