Solar collector having selective film of improved stability...

Details Solar collector having selective film of improved stability... Solar collector having selective film of improved stability...

F - Mech Eng,Light,Heat,Weapons

24

J

126/11.21

F24J 3/02 (1980.01)

Patent

CA 1090223

ABSTRACT OF THE DISCLOSURE 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.

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