Selective absorption film of a solar heat collector

Details Selective absorption film of a solar heat collector Selective absorption film of a solar heat collector

1986-09-05

1988-10-18

Green, Randall L.

Stoves and furnaces

Absorber coating

Particular chemical

126443, 126446, F24J 224

Patent

active

047779365

ABSTRACT:
A selective absorption film for selectively absorbing solar rays is composed mainly of cobalt oxide.
A blue system selective absorption film having high heat resistance at high temperatures is provided by coating one surface of a metal material of iron or copper with cobalt, and treating the cobalt layer in a furnace in an oxidizing atmosphere for a desired time, while supplying water vapor to the furnace which is maintained in an oxidizing atmosphere so as to carry out an oxidation treatment.

REFERENCES:
patent: 3920413 (1975-11-01), Lowery
patent: 3944440 (1976-03-01), Franz
patent: 4177325 (1979-12-01), Robert et al.
patent: 4186725 (1980-02-01), Schwartz
patent: 4206248 (1980-06-01), Schmidlin
patent: 4211210 (1980-07-01), Muenher et al.
patent: 4637374 (1987-01-01), Arai

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