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Consider a 300mm x 300mm window in an aircraft. For a temperature diference of 80 degrees C from the inner to outer surface of the window. Calculate the heat loss through L=10 mm- thick polycarbonate, soda lime glass, and aerogel windows, respectively. The thermal conductivity of the aerogel and polycarbonate are k(ag) = 0.014 W/(m*K) and k(pc) = 0.21 W/(m*K) respectively. Evaluate the thermal conductivity of the soda lime glass at 300K. If the aircraft has 130 windows and the cost to heat the cabin is $1/Kwh compare the costs associate with heat loss through the windows for an 8 hour intercontinental fligt.
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