A 4-m high and 6-m-wide wall consists of long 15-cm x 20 cm cross section horizontal bricks (k of 0.69 W/m K) separated by 2-cm thick plaster layers (k of 0.2 W/m K). There are also 2-cm-thck plaster layers on each side of the brick and a 3-cm-thick rigid foam (k of 0.025 W/m K) on the inner side of the wall. See figure below. The indoor and the outdoor air temperatures are 18 and -8oC, respectively. Convective heat transfer coefficient for inside and outer surfaces are 8 and 22 W/m2 K, respectively. Assume 1-D heat transfer. Neglect radiation.assume any plane parallel to the x-axis is adiabatic, , draw the thermal circuit and calculate the heat transfer rate through the wall insideFoambrickbrickbrickplaster1cm20cm1 cmoutside

To Find: The heat transfer rate through the wall.

Answered: A 4-m high and 6-m-wide wall consists…

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 4-m high and 6-m-wide wall consists of long 15-cm x 20 cm cross section horizontal bricks (k of 0.69 W/m K) separated by 2-cm thick plaster layers (k of 0.2 W/m K). There are also 2-cm-thck plaster layers on each side of the brick and a 3-cm-thick rigid foam (k of 0.025 W/m K) on the inner side of the wall. See figure below. The indoor and the outdoor air temperatures are 18 and -8^oC, respectively. Convective heat transfer coefficient for inside and outer surfaces are 8 and 22 W/m²K, respectively. Assume 1-D heat transfer. Neglect radiation.

assume any plane parallel to the x-axis is adiabatic, , draw the thermal circuit and calculate the heat transfer rate through the wall

inside
Foam
brick
brick
brick
plaster
1cm
20cm
1 cm
outside

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