Engineering, 19.02.2021 16:30 woodfordmaliky

A cubical freezer, 3 m on a side, has a composite wall consisting of an exterior sheet of 6.35-mm-thick plain carbon steel, an intermediate layer of 100-mm-thick cork insulation, and an inner sheet of 6.35-mm-thick aluminum alloy (2024). Adhesive interfaces between the insulation and the metallic strips are each characterized by a thermal contact resistance ofÂ R''t, c=2.5Ã—10^âˆ’4m^2â‹…K/W. Required:
What is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures areÂ 22Â°C and Â âˆ’6Â°C, respectively?

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A cubical freezer, 3 m on a side, has a composite wall consisting of an exterior sheet of 6.35-mm-th...