the exit Q2) A 4 m high and 6 m wide wall consists of a long 18 cmx30 cm cross section of horizontal bricks (k= 0.72 W/m - °C) separated by 3 cm thick plaster layers (k = 0.22 W/m - °C). There are also 2 cm-thick plaster layers on each side of the wall, and a 2 cm thick rigid foam (k =0.026 W/m °C) on the inner side of the wall. The indoor and the outdoor temperatures are 22°C and -4°C, and the convection heat transfer coefficients on the inner and the rough the wall. outer sides are ho =10 W/m² °C and h₁ = 20 W/m² °C, respectively. Assuming one-dimensional heat transfer and disregarding radiation, determine the rate of heat transfer
the exit Q2) A 4 m high and 6 m wide wall consists of a long 18 cmx30 cm cross section of horizontal bricks (k= 0.72 W/m - °C) separated by 3 cm thick plaster layers (k = 0.22 W/m - °C). There are also 2 cm-thick plaster layers on each side of the wall, and a 2 cm thick rigid foam (k =0.026 W/m °C) on the inner side of the wall. The indoor and the outdoor temperatures are 22°C and -4°C, and the convection heat transfer coefficients on the inner and the rough the wall. outer sides are ho =10 W/m² °C and h₁ = 20 W/m² °C, respectively. Assuming one-dimensional heat transfer and disregarding radiation, determine the rate of heat transfer
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.3DP
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Question
![c) the exit
Q2) A 4 m high and 6 m wide wall consists of a long 18
cmx30 cm cross section of horizontal bricks (k= 0.72
W/m -°C) separated by 3 cm thick plaster layers (k = 0.22
W/m -°C). There are also 2 cm-thick plaster layers on each
side of the wall, and a 2 cm thick rigid foam (k =0.026
W/m -°C) on the inner side of the wall. The indoor and the
outdoor temperatures are 22°C and -4°C, and the
convection heat transfer coefficients on the inner and the
through the wall.
outer sides are ho -10 W/m² °C and h = 20 W/m² °C,
respectively. Assuming one-dimensional heat transfer and
disregarding radiation, determine the rate of heat transfer
2°C, 30%
AIR
18 m/s
Foam
Brick
ellele
1 atm
30 cm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a35ac1c-5a95-40ac-9078-5f9a4e90ae44%2F9366eb2a-833a-4f03-b51f-7ee4e20b3457%2Fbei4ht_processed.jpeg&w=3840&q=75)
Transcribed Image Text:c) the exit
Q2) A 4 m high and 6 m wide wall consists of a long 18
cmx30 cm cross section of horizontal bricks (k= 0.72
W/m -°C) separated by 3 cm thick plaster layers (k = 0.22
W/m -°C). There are also 2 cm-thick plaster layers on each
side of the wall, and a 2 cm thick rigid foam (k =0.026
W/m -°C) on the inner side of the wall. The indoor and the
outdoor temperatures are 22°C and -4°C, and the
convection heat transfer coefficients on the inner and the
through the wall.
outer sides are ho -10 W/m² °C and h = 20 W/m² °C,
respectively. Assuming one-dimensional heat transfer and
disregarding radiation, determine the rate of heat transfer
2°C, 30%
AIR
18 m/s
Foam
Brick
ellele
1 atm
30 cm
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