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A 9.3m2 wall consists of 10cm of red brick (k=0.66 W/m.K), 2.5cm of pine (k=0.1W/m.K), and 1.2cm of plasterboard (k=0.52 W/m.K). The internal and external

A 9.3m2 wall consists of 10cm of red brick (k=0.66 W/m.K), 2.5cm of pine (k=0.1W/m.K), and 1.2cm of plasterboard (k=0.52 W/m.K). The internal and external film coefficients are 9.38W/m2.K and 34.1 W/m2.K, respectively. The inside and outside air temperatures are 22C and -1C respectively. Determine the Overall coefficient of heat transfer.

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