Solar collector having selective film of improved stability to l

Details Solar collector having selective film of improved stability to l Solar collector having selective film of improved stability to l

1975-07-30

1978-02-21

Pitlick, Harris A.

Stoves and furnaces

Heaters

Surface

148 614R, 148 616, 148 62, F24J 302, C23F 702, C23F 1700

Patent

active

040747069

ABSTRACT:
Solar collector including a copper or copper alloy base and a selective solar heat energy-absorptive coating or film of improved stability to liquid water on the base. The selective film is characterized by having a solar absorptivity of 0.90 or higher, infrared emissivity no more than 0.20, and a stability such that its selectivity is not significantly reduced after contact with liquid water condensate over a prolonged, cumulative, non-continuous time in excess of 15,000 hours.

REFERENCES:
patent: 2437441 (1948-03-01), Rogers
patent: 2460896 (1949-02-01), Meyer
patent: 2481854 (1949-09-01), MacMahon
patent: 3198672 (1965-08-01), De Hart
patent: 3837929 (1974-09-01), Caule
patent: 3929122 (1975-12-01), Alkasab
Fishlock, Metal Colouring, Robert Draper Ltd.: Teddington, England, 1962, pp. 194-195.

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