In order to increase the thermal resistance of a typical exterior frame wall, such as th...

In order to increase the thermal resistance of a typical exterior frame wall, such as the one shown in Example 11.11, it is customary to use 2 × 6 studs instead of 2 × 4 studs to allow for placement of more insulation within the wall cavity. A typical exterior (2 × 6) frame wall of a house consists of the materials shown in the accompanying figure. Assume an inside room temperature of 68°F and an outside air temperature of 20°F with an exposed area of 150 ft². Determine the heat loss through this wall.