Two parallel black rectangular surfaces, whose back sides are insulated, are oriented parallel to each other with a spac

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Two Parallel Black Rectangular Surfaces Whose Back Sides Are Insulated Are Oriented Parallel To Each Other With A Spac 1 (14.02 KiB) Viewed 15 times

Two parallel black rectangular surfaces, whose back sides are insulated, are oriented parallel to each other with a spacing of 5 m. They measure 5 m by 10 m. The surroundings are black at 0 K. The two surfaces are maintained at 200 and 100 K, respectively. Determine the following: a. the net radiant heat transfer between the two surfaces; b. the net heat supplied to each surface; c. the net heat transfer between each surface and the surroundings.