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A hollow sphere is constructed of aluminum with an inner diameter of 4 cm and an outer diameter of 8 cm The inside temperature is 100 C and the outer temperature is

A hollow sphere is constructed of aluminum with an inner diameter of 4 cm and an outer diameter of 8 cm. The inside temperature is 100 C and the outer temperatureis 50 C. Suppose the sphere is covered with a 1-cm layer of an insulating material having k= .05 W/m C and the outside of the insulationis exposed to an enviroment with h= 20 W/m2 C and T∞ = 10 C. The inside of the sphere remains at 100 C. Calculate the heat transfer under theseconditions.

May 05 2020 View more View Less

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