a) What is the heat transfer rate per unit area in kW/m2 if T1 =...

Question

# a) What is the heat transfer rate per unit area in kW/m2 if T1 =...

a) What is the heat transfer rate per unit area in kW/m2 if T1 = 50˚C, T2 = 400˚C, t = 20 cm and kwall = 165 W/m·K? Indicate "+" or "-" for the direction.

b) What is the total thermal resistance of the wall in problem #1 if its heat transfer area was 1 m2 and the heat transfer coefficients on the sides were: h1 = 40 W/m2 ·K and h2 = 60 W/m2 ·K?

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