Air-stable selective surfaces for solar energy collectors. Quarterly progress report No. 5, 1 May--31 Jul 1975
Technical Report
·
OSTI ID:7327308
Production and testing of some of the proposed designs for stable operation in air at high temperatures have been done. The characteristics of these designs and the heat stability test results are presented. Samples have been repeatably produced which have values of solar absorbance greater than 0.95 and values of emittance less than 0.04. Heat tests of these samples show no temperature induced degradation after 1700 hours exposure to 150C. A preliminary cost analysis of a planar collector of the Meinel--Trombe design with selective films is included.
- Research Organization:
- Helio Associates, Inc., Tucson, Ariz. (USA)
- OSTI ID:
- 7327308
- Report Number(s):
- PB-247214; NSF/RANN/SE/GI-41895/PR/74/6
- Country of Publication:
- United States
- Language:
- English
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