Ponder upon a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given in the figure and this pattern in the construction of this wall repeats along the vertical orientation. The thermal conductivities of numerous materials used, in W/m · deg. C, are ka = kf = 2, kg = 8, kc =20, ko = 15, and kɛ = 35. The left and right surfaces of the wall are preserved at uniform temperatures of 300 deg. C and 100 deg. C, respectively. Supposing heat transfer through the wall to be one-dimensional, determine (a) the rate of heat transfer through the wall; (b) the temperature at the point where the sections B, D, and E meet; and (c) the temperature drop across the section F. Disregard any contact resistances at the interfaces. %3D 100°C 300°C D A 4 cm F 6 cm 4 cm 6 em 4 cm 8 m 1 cm 5 cm 10 cm | 6 cm 24

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Ponder upon a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given in the figure and this
pattern in the construction of this wall repeats along the vertical orientation. The thermal conductivities of numerous
materials used, in W/m · deg. C, are ka = kF = 2, kg = 8, kc =20, kp = 15, and kɛ = 35. The left and right surfaces of the wall are
preserved at uniform temperatures of 300 deg. C and 100 deg. C, respectively. Supposing heat transfer through the wall to be
one-dimensional, determine (a) the rate of heat transfer through the wall; (b) the temperature at the point where the sections
B, D, and E meet; and (c) the temperature drop across the section F. Disregard any contact resistances at the interfaces.
100°C
300°C
D
A4 cm
F
6 cm
4 cm
E
6 em
4 cm
8 m
1 cm
5 cm
10 cm | 6 cm
Transcribed Image Text:Ponder upon a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given in the figure and this pattern in the construction of this wall repeats along the vertical orientation. The thermal conductivities of numerous materials used, in W/m · deg. C, are ka = kF = 2, kg = 8, kc =20, kp = 15, and kɛ = 35. The left and right surfaces of the wall are preserved at uniform temperatures of 300 deg. C and 100 deg. C, respectively. Supposing heat transfer through the wall to be one-dimensional, determine (a) the rate of heat transfer through the wall; (b) the temperature at the point where the sections B, D, and E meet; and (c) the temperature drop across the section F. Disregard any contact resistances at the interfaces. 100°C 300°C D A4 cm F 6 cm 4 cm E 6 em 4 cm 8 m 1 cm 5 cm 10 cm | 6 cm
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