A 10-in-thick, 26-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k= 0.40 Btu/h-ft-F) of cross section 7 in x 7 in, or identical-size bricks with nine square air holes (k 0.015 Btu/h-ft-"F) that are 9 in long and have a cross section of 1.5 in x 1.5 in. There is a 0.5-in-thick plaster layer (k= 0.10 Btu/h-ft-"F) between two adjacent bricks on all four sides and on both sides of the wall. The house is maintained at 80'F and the ambient temperature outside is 35'F. Take the heat transfer coefficients at the inner and outer surfaces of the wall to be 1.5 and 6 Btu/h-t2"F, respectively. Air channels 15 in x 15 in9 in 05 in 7 in 05 in Plaster Brick Determine the rate of heat transfer through the wall constructed of bricks with air holes. The rate of heat transfer through the wall is Btu/h.
A 10-in-thick, 26-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k= 0.40 Btu/h-ft-F) of cross section 7 in x 7 in, or identical-size bricks with nine square air holes (k 0.015 Btu/h-ft-"F) that are 9 in long and have a cross section of 1.5 in x 1.5 in. There is a 0.5-in-thick plaster layer (k= 0.10 Btu/h-ft-"F) between two adjacent bricks on all four sides and on both sides of the wall. The house is maintained at 80'F and the ambient temperature outside is 35'F. Take the heat transfer coefficients at the inner and outer surfaces of the wall to be 1.5 and 6 Btu/h-t2"F, respectively. Air channels 15 in x 15 in9 in 05 in 7 in 05 in Plaster Brick Determine the rate of heat transfer through the wall constructed of bricks with air holes. The rate of heat transfer through the wall is Btu/h.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A 10-in-thick, 26-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k = 0.40 Btu/h⋅ft⋅°F) of cross section 7 in × 7 in, or identical-size bricks with nine square air holes (k = 0.015 Btu/h⋅ft⋅°F) that are 9 in long and have a cross section of 1.5 in × 1.5 in. There is a 0.5-in-thick plaster layer (k = 0.10 Btu/h⋅ft⋅°F) between two adjacent bricks on all four sides and on both sides of the wall. The house is maintained at 80°F and the ambient temperature outside is 35°F. Take the heat transfer coefficients at the inner and outer surfaces of the wall to be 1.5 and 6 Btu/h⋅ft2⋅°F, respectively.
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A 10-in-thick, 26-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k= 0.40 Btu/h-ft-F) of cross
section 7 in x 7 in, or identical-size bricks with nine square air holes (k= 0.015 Btu/h-ft-F) that are 9 in long and have a
cross section of 1.5 in x 1.5 in. There is a 0.5-in-thick plaster layer (k= 0.10 Btu/h-ft-F) between two adjacent bricks on all
four sides and on both sides of the wall. The house is maintained at 80°F and the ambient temperature outside is 35'F.
Take the heat transfer coefficients at the inner and outer surfaces of the wall to be 1.5 and 6 Btu/h-f22-"F, respectively.
Air channels
15 in x 1.5 in x 9 in
05 in
7 in
05 in
Plaster
Brick
lo5 in
9 in
Determine the rate of heat transfer through the wall constructed of bricks with air holes.
The rate of heat transfer through the wall is
Btu/h.
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