A 1-2 exchanger is to be designed to heat ethanol (C, = 2.58 kJ/kg-K) from 25C to 60C by hot water available at 80C. Ethanol enters the tube-side compartment at 10,000 kg/h while the water is available at a flowrate of 15,000 kg/h. The inside and outside heat transfer coefficients were estimated to be 1250 and 2000 W/m7-K, respectively. The tubes are 1 BWG 10 copper pipes (k = 385 W/m-K). Caleulate: a. the exit temperature of the water b. overall inside heat transfer coefficient c. the thermal effectiveness of the exchanger d. the number of 5-m tubes required per tube-pass of the exchanger