A heat exchanger unit is designed to condense 500 kg/min of pure organic vapor at 82C to saturated liquid. Cooling water of 60 kg/s enters in the opposite direction at a temperature of 13C. The overall heat transfer coefficient in this apparatus is estimated at 475 W/(m2oC). Calculate the outlet temperature of the cooling water and the required heat transfer area.

The heat of condensation of organic vapors = 600 kJ/kg.