A solid wood door has dimensions; height = 2m, width = 0.8m, thickness = 0.04m. Its thermal conductivity is K=0.04 Js−1m1(∘C)−1. The inside air temperature is 20∘C and outside air temperature is −10∘C. What is the rate of heat flow through the door, assuming the surface temperatures are those of the surrounding air.

A solid wood door has dimensions; height = 2m, width = 0.8m, thickness

1.	A solid wood door has dimensions; height = 2m, width = 0.8m, thickness = 0.04m. Its thermal conductivity is K=0.04 Js−1m1(∘C)−1. The inside air temperature is 20∘C and outside air temperature is −10∘C. What is the rate of heat flow through the door, assuming the surface temperatures are those of the surrounding air.
Answer» A solid wood door has dimensions; height = 2m, width = 0.8m, thickness = 0.04m. Its thermal conductivity is $K = 0.04 J s^{- 1} m^{1} (^{\circ} C)^{- 1}$ . The inside air temperature is $20^{\circ} C$ and outside air temperature is $- 10^{\circ} C$ . What is the rate of heat flow through the door, assuming the surface temperatures are those of the surrounding air.

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