Consider a 1.5-m-high and 0.6-m-wide plate whose thickness is 0.15 m. One side of the plate is maintained at a constant temperature of 500 K while the other side is maintained at 350 K. The thermal conductivity of the plate can be assumed to vary linearly in that temperature range as k(T) = k0(l + ßT) where k0 = 18 W/m K and ß = 8.7 × 10-4 K-1 Disregarding the edge effects and assuming steady one-dimensional heat transfer, determine the rate of heat conduction through the plate. Answer:22.2 kW
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