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Thermal Performance of an Annealed Pyrolytic Graphite Solar CollectorA solar collector having the combined properties of high solar absorptance, low infrared emittance, and high thermal conductivity is needed for applications where solar energy is to be absorbed and transported for use in minisatellites. Such a solar collector may be used with a low temperature differential heat engine to provide power or with a thermal bus for thermal switching applications. One concept being considered for the solar collector is an Al2O3 cermet coating applied to a thermal conductivity enhanced polished aluminum substrate. The cermet coating provides high solar absorptance and the polished aluminum provides low infrared emittance. Annealed pyrolytic graphite embedded in the aluminum substrate provides enhanced thermal conductivity. The as-measured thermal performance of an annealed pyrolytic graphite thermal conductivity enhanced polished aluminum solar collector, coated with a cermet coating, will be presented.
Document ID
Document Type
Reprint (Version printed in journal)
Jaworske, Donald A.
(NASA Glenn Research Center Cleveland, OH United States)
Hornacek, Jennifer
(Notre Dame Coll. South Euclid, OH United States)
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Publication Information
Publication: CP608, Space Technology and Applications Forum-STAIF 2002
Publisher: American Inst. of Physics
ISBN: 0-7354-0052-0
Subject Category
Energy Production And Conversion
Distribution Limits

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