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