Engineering, 07.04.2020 20:28 snikergrace

A commercial grade cubical freezer, 3m on a side, has a composite wall consisting of an exterior sheet of 6.35mm-thick plain carbon steel, an intermediate layer of 100mm-thick aluminum alloy (2024). Adhesive surfaces between the insulation and the metallic strips are each characterized by a thermal contact resistance of R=2.510^-4 m^2K/W. What is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 22 degrees celsius and -6 degrees celsius, respectively?

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A commercial grade cubical freezer, 3m on a side, has a composite wall consisting of an exterior she...