A wall 2 cm thick with inner surface of 1300 degreeC is to b

A wall 2 cm thick with inner surface of 1300 degreeC is to be constructed from material that has an average thermal conductivity of 1.3 W/m degreeC. The wall is to be insulated with material having an average thermal conductivity of 0.35 W/m degreeC. Assuming outer surface temperatures of the insulated wall are 1300 degreeC, the insulation thickness of 0.6 cm and the area normal to heat transfer flow is 0.9 m^2, calculate the overall heat transfer coefficient and the amount of heat transfer.

Solution

ques may be wrong. inside and outside temp should never be equal when there is insulation.