A thermopane window consists of two sheets of glass separated by a volume filled with air (which we will model as N₂ where k = 0.0240 J K^-1 m^-1 s^-1) For a thermopane window that is 1 m²Â in area with a separation between glass sheets of 3 cm, what is the loss of energy when

a. the exterior of the window is at a temperature of 10°C and the interior of the window is at a temperature of 22°C?

b. the exterior of the window is at a temperature of -20°C and the interior of the window is at a temperature of 22°C?

c. the same temperature differential as in part (b) is used, but the window is filled with Ar (k = 0.0163 J K^-1 m^-1 s^-1) rather than N₂?

 

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