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A Thermopane window of area 3.1 m^2 is constructed of two layers of glass, each 6 mm thick separated by an air space of 7mm. If the inside is at 15C and the outside is at ?31 C, what is the heat loss through the window? The thermal conductivity of glass is 0.8 W/m C and of air is 0.0234 W/m ·C.

Answer in units of kW

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