Consider a 5-m-high, 8-m·long, and 0.22-m·fhick wall whose representative cross section is...

Consider a 5-m-high, 8-m·long, and 0.22-m·fhick wall whose representative cross section is as given in the figure. The thermal conductivities of various materials used, in W/m·K, are kA = kF = 2, kB = 8,kc = 20, kD = 15, and kE = 35. The left and right surfaces of the wall are maintained at uniform temperatures of 300°C and 100°C, respectively. Assliming 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.

FIGURE P3–61