Question: An ammonia condenser uses a 20 by 20 array of 6.35-mm-diameter tubes 0.305 m long. The ammonia condenses at 32.2oC and the tube walls are

An ammonia condenser uses a 20 by 20 array of 6.35-mm-diameter tubes 0.305 m long. The ammonia condenses at 32.2oC and the tube walls are maintained at 27.8oC by a water flow inside. Calculate the rate of condensation of ammonia. hfg at 32.2oC is 1135 kJ/kg.

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