A 6-m-tall chimney is to bedesigned to discharge hot gases from a fireplace at 1808C at aconstant rate of 0.15 m3/s when the atmospheric air temperatureis 208C. Assuming no heat transfer from the chimney and takingthe chimney entrance loss coefficient to be 1.5 and the frictioncoefficient of the chimney to be 0.020, determine the chimneydiameter that would discharge the hot gases at the desired rate.Note that P3 = P4 = Patm and P2 = P1 = Patm + ratm air gh, andassume the hot gases in the entire chimney are at 180°C.

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