Question

A spherical vessel of id 0.3 m and thickness of 20 mm is made of steel with conductivity of 40 w/mk. the vessel is insulated with two layers of 60 mm thickness of conductivity 0.05 w/mk and 0.15 w/mk. the inside surface is at 196 c. the outside is exposed to air at 30 c with convection coefficient of 35 w/m 2k. there is a contact resistance of 1 103 m 2 k/w between the two insulation. determine the heat gain and also the surface temperatures and the overall heat transfer coefficient based on the outside surface area of the metallic vessel

Answer 1

Answer:

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