Use the Internet to find and 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 wooder
layers.
The thermal conductivities of pine wood, glass, and are 0.12, 0.80, and 0.024 W/m K, respectively.