Two plates, one with a black painted surface and the other
Chapter , Problem 12.129(choose chapter or problem)
Two plates, one with a black painted surface and the other with a special coating (chemically oxidized copper) are in earth orbit and are exposed to solar radiation. The solar rays make an angle of 30 with the normal to the plate. Estimate the equilibrium temperature of each plate assuming they are diffuse and that the solar flux is 1368 W/m2 . The spectral absorptivity of the black painted surface can be approximated by 0.95 for 0 and that of the special coating by 0.95 for 0 3 m and 0.05 for 3 m. 12.130
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