Question: Two large parallel planes with emissivity 0 . 6 are at 9 0 0 K & 3 0 0 K . A radiation shield with

Two large parallel planes with emissivity 0.6 are at 900 K & 300 K. A radiation shield with one side polished, having emissivity of 0.05, while the emissivity of other side is0.4 is proposed to be used. Which side of the shield to face the hotter plane, if the temperature of shield is kept minimum?

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