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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

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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-ft? Q = 27.8 Btu / h-ft? Q- 22.0 Btu / h-ft2
Transcribed Image Text: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-ft? Q = 27.8 Btu / h-ft? Q- 22.0 Btu / h-ft2
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