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Topic

Heat Transfer · Question 1

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medium

A. Conduction, convection, radiation, transient & heat exchangers

A brick wall 200 mm thick with thermal conductivity $k=0.8$ W/(m·K) has a face area of 10 m². In steady operation its inside surface is at $T_1=20$ °C and its outside surface at $T_2=-4$ °C. The rate of heat loss through the wall is most nearly:

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