Selective black for absorption of solar energy

Details Selective black for absorption of solar energy Selective black for absorption of solar energy

1975-11-24

1977-03-08

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106290, 126270, 252 623R, 252 623T, 252512, 428328, C08K 308, C08K 501, F24J 302

Patent

active

040111903

ABSTRACT:
Improved selective black particles for use in solar receivers are described. The improved selective blacks comprise small particles of a metal having a low emissivity which are coated with a thin layer of an optically dark material having high absorptivity and low reflectivity for solar wavelengths and which is transparent for higher wavelengths in the thermal range. The improved selective black particles can be applied, e.g., as a paint, to any surface suitable for a solar heat receiver.

REFERENCES:
patent: 2891879 (1959-06-01), Rohrer
patent: 2917817 (1959-12-01), Tabor
patent: 3831269 (1974-08-01), Sommer
patent: 3876552 (1975-04-01), Moynihan
patent: 3920413 (1975-11-01), Lowery
Cravalho et al. Chem. Abs. 75, 122446u (1971).

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