average thermal conductivity
Question: The average thermal conductivity of the walls (including windows) and roof of a house in the figu... The average thermal conductivity of the walls (including windows) and roof of a house in the figure shown below is 4.8 10-4 kW/m Â· Â°C, and their average thickness is 21.5 cm. The house is heated with natural gas, with a heat of combustion (energy given off per cubic meter of gas burned) of 9,300 kcal/m 3.