A wall with a brick and concrete layer is shown in the figure. The wall has a leng 15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and th concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, t heat transfer rate through the wall, and the temperature of its inner surface for during which the room is maintained at 20°C while the temperature of the out is 32°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which incl the effects of radiation. Pound off your final answer to three (2) decimal places (20 pts
A wall with a brick and concrete layer is shown in the figure. The wall has a leng 15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and th concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, t heat transfer rate through the wall, and the temperature of its inner surface for during which the room is maintained at 20°C while the temperature of the out is 32°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which incl the effects of radiation. Pound off your final answer to three (2) decimal places (20 pts
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.38P:
2.38 The addition of aluminum fins has been suggested to increase the rate of heat dissipation from...
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![A wall with a brick and concrete layer is shown in the figure. The wall has a length of
15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and the
concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, the
heat transfer rate through the wall, and the temperature of its inner surface for a day
during which the room is maintained at 20°C while the temperature of the outdoors
is 32°C. Take the convection heat transfer coefficients on the inner and outer
surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which includes
the effects of radiation.
Round off your final answer to three (3) decimal places. (20 pts.)
Tooout
Outdoor
Brick
Concrete Wall
Heat Transfer, Q (W) =
Total Heat Resistance, RT (K/W) =
input: 2.01234x10^-3)
T₂
Inner Surface Temp, T2 (°C) =
Toin
Indoor
(5 decimal places - example](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6dfdbb25-81e7-44a9-8bf7-2a078f52c7cd%2Fc5e711fa-b5ca-4704-9691-3d2c13dc9632%2Fe02zrk_processed.png&w=3840&q=75)
Transcribed Image Text:A wall with a brick and concrete layer is shown in the figure. The wall has a length of
15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and the
concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, the
heat transfer rate through the wall, and the temperature of its inner surface for a day
during which the room is maintained at 20°C while the temperature of the outdoors
is 32°C. Take the convection heat transfer coefficients on the inner and outer
surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which includes
the effects of radiation.
Round off your final answer to three (3) decimal places. (20 pts.)
Tooout
Outdoor
Brick
Concrete Wall
Heat Transfer, Q (W) =
Total Heat Resistance, RT (K/W) =
input: 2.01234x10^-3)
T₂
Inner Surface Temp, T2 (°C) =
Toin
Indoor
(5 decimal places - example
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