Heat Transfer,Refrigeration and Air Conditioning - Mechanical Engineering Questions and Answers

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Discussion :: Heat Transfer,Refrigeration and Air Conditioning

Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be

one

two

three

four

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