Electrically heated draw batch furnaces are commonly used in the heat treatment

Question

Electrically heated draw batch furnaces are commonly used in the heat treatment industry. Consider a draw batch furnace front made of a 20-mm thick steel plate with a thermal conductivity of 25 W/m·K. The furnace is situated in a room with surrounding air temperature of 20 degreeC and an average convection heat transfer coefficient of 10 W/m2·K. If the inside surface of the furnace front is subjected to uniform heat flux of 5 kW/m2 and the outer surface has an emissivity of 0.30, determine the inside surface temperature of the furnace front. Answer: 598 K

Explanation / Answer

Electrically heated draw batch furnaces are commonly used in the heat treatment

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