Solved: Figure 18-45 shows the cross section of a wall
Chapter , Problem 60(choose chapter or problem)
Figure 18-45 shows the cross section of a wall made of three layers. The layer thicknesses are L1, L2 = 0.700LI> and L3 = 0.350L1 The thermal 1H conductivities are kl> k2 = 0.900kl> and k3 = 0.800k1 The temperatures at the left and right sides of the wall are T H = 30.0C and T c = -15.0C, respectively. Thermal conduction is steady. (a) What is the temperature difference I1T2 across layer 2 (beFig. 18-45 60. tween the left and right sides of the layer)? If k2 were, instead, equal to 1.1kl> (b) would the rate at which energy is conducted through the wall be greater than, less than, or the same as previously, and (c) what would be the value of I1T2?
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