List the thermal conductivities of five
construction materials used in building houses,
Then, evaluate the typical amount of heat lost through the exterior
wooden wall of thickness 15 cm, and 10 glass windows of thickness 1 cm
of a house in winter for a month. Assume that the wooden wall
measures 12 by 11 by 5 m, and that each window measures 1 m by 2 m.
Analyze how the heat loss will be affected if an air gap of 5 mm width is
introduced between the glass layers and wooden layers, Hint: When an
air gap is introduced, the heat flow is essentially limited only by the air
gap, so you can neglect the glass and wooden layers,
The thermal conductivities of pine wood, glass, and air are 0.12,0,80,
and 0.024 W/mK, respectively,