Consider a 5 m high, 8 m long, and 0 22 m thick wall whose representative cross section is as given in the figure The thermal conductivities of various materials used, in W m middot K, are k A k F 2, k B 8, k C 20, k D 15, and k E 35 The left and right surfaces of the wall are maintained at uniform temperatures of 300 deg C and 100 deg C, respectively Assuming heattransfer through the wall to be onedimensional, determine (a) The rate of heat transfer through the wall (b) The temperature at the point where the sections B, D, and E meet (c) The temperature drop across the section F Disregard any contact resistances at the interfaces 100C 300C A 4 m 6 cm 4 cm fC 4 m 6 cm cm 10 cm 6 cm 1 cm 5

Question: Consider a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given in the figure. The thermal conductivities of various materials used, in

Consider a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as given in the figure. The thermal conductivities of various materials used, in W/m·K, are k_A= k_F= 2, k_B= 8, k_C= 20, k_D= 15, and k_E= 35. The left and right surfaces of the wall are maintained at uniform temperatures of 300°C and 100°C, respectively. Assuming heattransfer through the wall to be onedimensional, determine

(a) The rate of heat transfer through the wall;

(b) The temperature at the point where the sections B, D, and E meet;

100°C 300°C A 4 čm 6 cm 4 cm fC 4 çm 6 cm cm 10 cm 6 cm 1 cm 5 ст

100C 300C A 4 m 6 cm 4 cm fC 4 m 6 cm cm 10 cm 6 cm 1 cm 5

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