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1. Flue gases from an incinerator are released to atmosphere using a stack that is 0.6 m in diameter and 10.0 m high. The
1. Flue gases from an incinerator are released to atmosphere using a stack that is 0.6 m in diameter and 10.0 m high. The outer surface of the stack is at 40C and the surrounding air is at 10C. Determine the rate of heat transfer from the stack assuming (a) there is no wind and (b) the stack is exposed to 20 km/h winds. Answers: (a) 2070 W, (b) 11,390 W Air T, -40C T = 10C D=0.6 m L= 10 m
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