Question 1 A composite wall consists of 6 in. of ordinary brick [k - 0.4 Btu/(h-ft F)), 1 in, of concrete (k - 0.8 Btu/h-ft-F), and % in, of plaster (k- 0.06 Btu/(h-ft.F). If the inside wall is maintained at 70°F when the outside is 25°F, determine the conductive heat transfer rate per square foot through the wall. Q-1.83 Btu/ h-ft? Q- 33.2 Btu / h-ft2 Q- 27.8 Btu / h-ft? -22.0 Btu / h-ft2

Question 1 A composite wall consists of 6 in. of ordinary brick [k - 0.4 Btu/(h-ft F)), 1 in, of concrete (k - 0.8 Btu/h-ft-F), and % in, of plaster (k- 0.06 Btu/(h-ft.F). If the inside wall is maintained at 70°F when the outside is 25°F, determine the conductive heat transfer rate per square foot through the wall. Q-1.83 Btu/ h-ft? Q- 33.2 Btu / h-ft2 Q- 27.8 Btu / h-ft? -22.0 Btu / h-ft2