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 ther- mal conductivity of 25 W/m-K. The furnace is situated in a oom with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m2-K. If the nside surface of the furnace front is subjected to uniform neat flux of 5 kW/m² and the outer surface has an emissiv- ty of 0.30, determine the inside surface temperature of the furnace front. T = 20°C Furnace front to = 5 kW/m² Air, 20°C h = 10 W/m K e = 0.30 k= 25 W/m-K To

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 ther- mal conductivity of 25 W/m-K. The furnace is situated in a oom with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m2-K. If the nside surface of the furnace front is subjected to uniform neat flux of 5 kW/m² and the outer surface has an emissiv- ty of 0.30, determine the inside surface temperature of the furnace front. T = 20°C Furnace front to = 5 kW/m² Air, 20°C h = 10 W/m K e = 0.30 k= 25 W/m-K To

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.13P

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