An air-conditioned room has one of the walls, which is 5 m × 3 m of 3.75 cm thick brick. The conditioned space is maintained at 27°C when the outside temperature is 47°C. Variation of thermal conductivity with temperature of the wall is given by k = 1 + 2 × 10-4 T, where T is in Kelvin and k is in W/mK. The heat gained by the conditioned space through this wall is

An air-conditioned room has one of the walls, which is 5 m × 3 m of 3

1.	An air-conditioned room has one of the walls, which is 5 m × 3 m of 3.75 cm thick brick. The conditioned space is maintained at 27°C when the outside temperature is 47°C. Variation of thermal conductivity with temperature of the wall is given by k = 1 + 2 × 10-4 T, where T is in Kelvin and k is in W/mK. The heat gained by the conditioned space through this wall is
A.	8496 W
B.	84.96W
C.	800 W
D.	0
Answer» B. 84.96W

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