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Engineering · Mechanical Engineering
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1. A surface is designed fo r use in space. It has spectral hemispherical properties as show below λ (μπ) 1.0-2.6 2.6-10.0 10.-100.0 0.65 0.80 0.25 0.10 0.35 0.20 0.75 0.90 With receiving the solar radiation (G, with the assumption of gray property), the surface which is installed on a spacecraft is maintained at 350K. (a) Calculate the total hemispherical emissivity (); (b) calculate the total hemispherical absorptivity (a); and (c) determine the value of G (in kJ/m) Note: Table of blackbody radiation function is enclosed for your convenience (25%)
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