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GO Figure 18-46 shows the cross section of a wall made of three layers. The layer thicknesses are L1, L2 = 0.700L1, and L3 = 0.350L1. The thermal conductivities are k1, k2 = 0.900 k1, and k3 = 0.800 k1. The temperatures at the left side and right side of the wall are TH = 30.0°C and TC = −15.0°C, respectively. Thermal
Figure 18-56 Problem 60.
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