A concrete wall, which has a surface ar area that 20 m2 and is 0.30 m thick, the end conditioned room waiting from ambient air. The temperature the the inner surface of the wall is maintained at 25°C, and the thennal conductivity that the concrete is 1 W/m. K.

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(a) recognize the heat loss with the wall surface for external surface temperatures varying from - 15°C to 38°C,which exchange mail to winter and summer extremes, respectively. Display screen your results graphically.

(b) On your graph. Also plot the heat loss together a function of the external surface temperature for wall surface materials having actually thermal conductivities that 0.75 and also 1.25 W/m . K. Describe the family members of curve you have actually obtained.


A concrete wall through a surface area of 20 m 2 and a thickness of 0.30 m separates conditioned room air from ambient air. The temperature of the inner surface of the wall (T 1 ) is maintained at 25°C. (a) Determine the heat loss Q (W) through the concrete wall for 3 thermal conductivity values... See Answer
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The concrete slab of a basement is 11 m long, 8 m wide and 0.20 m thick. During the winter, temperatures space nominally 17°C and 10oC at the optimal and bottom surfaces, respectively.

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