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7.21 The Weather Channel reports that it is a hot, muggy day with an air temperature...

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Mechanical Engineering

7.21 The Weather Channel reports that it is ahot, muggy day with an air temperature of 90°F, a 10 mph breeze outof the southwest, and bright sunshine with a solar insolation of400 W/m2. Consider the wall of a metal building overwhich the prevailing wind blows. The length of the wall in the winddirection is 10 m, and the emissivity is 0.93. Assume that all thesolar irradiation is absorbed, that the surroundings are atTsur = 85°F, and that flow is fully turbulentover the wall. Estimate the average wall temperature.

Answer: 53C

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