Question

Estimate the heat loss, due to conduction through a 1 square meter window if the inside temperature is 20°C and the outside temperature is 0°C. There is a stagnant layer of air on each side of the window, which makes the temperature difference across the 5 mm thick window only 1°C.

This answer was 160 W.

Estimate the heat loss by conduction through if it is double paned. Assume the stagnant air layer is between the two layers of glass and is also 5.0 mm thick. Assume the inside glass is at 20C and the outside glass is at 0C. Compare the heat loss through the double pane window to that of a single pane.

Answer 1