Review the steady-state temperature of the satellite


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Q: A spherical satellite of diameter D is in orbit about the earth and is coated with a diffuse material for which the spectral absorptivity is a = 0.6 for A < 3="" pm="" and="" a?="0.3" for="" ?=""> 3µm. When it is on the "dark" side of the earth, the satellite sees irradiation from the earth's surface only. The irradiation may be assumed to be incident as parallel rays, and its magnitude is GE = 340 W/m2. On the "bright" side of the earth the satellite sees the earth irradiation GE plus the solar irradiation GS = 1353 W/m2. The spectral distribution of radiation from the earth may be approximated as that of a blackbody at 280 K, and the temperature of the satellite may be assumed to remain below 500 K. What is the steady-state temperature of the satellite when it is on the dark side of the earth and when it is on the bright side?

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Electrical Engineering: Review the steady-state temperature of the satellite
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