A heat exchanger is to cool ethylene glycol (cp = 2.56 kJ/kg degree C) flowing at a rate of 3.2 kg/s from 80 degree C to 40 degree C by water that enters at 20 degree C and leaves at 70 degree C. (Use cp of water at 20 degree C). Determine the rate of heat transfer and the mass flow rate of water. Draw the process diagram.