Heat transfer A solid sphere of 1 m diameter at 500 K is kept in an evacuated, e

Question

Heat transfer

A solid sphere of 1 m diameter at 500 K is kept in an evacuated, equilateral channel whose sides are 2 m long. The emissivity of the sphere is 0.45 and the temperature of the enclosure is 380 K. If heat is generated uniformly within the sphere at a rate of 3100 W. If the heat is generated uniformly withing the sphere at a rate of 3100 W, and for the radiation heat transfer purposes the channel is considered infinitely long Determine the shape factors from the channel to the sphere, F 21. Determine the emissivity of the enclosure.

Explanation / Answer

heat transfer is the phenomenon of transfer of heat from hotter body to cooler body

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