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Engineering · Mechanical Engineering
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2. An 8 cm thick metal plate (k 44 W/m K, p 8800 kg/m, cp 420 J/kg K) is initially at a uniform temperature of 20°C. Both surfaces of the plate are heated in a gas-fired furnace C with an average convection coefficient of 220 W/m2 K while all the cross sections of the plate are properly insulated. a. Wh at is the maximum temperature of the plate 7 minutes after the start of the heating T, = 249.8°C b. Evaluate the mid plane temperature of the plate at that time. Tmid 224.37°C process? c. Determine the rate of heat absorption by the plate during this heating period if the surface area of the plate is 0.02 m2. q 1498.87 w

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