1. Do the previous problem with ammonia as the working fluid.
2. A concentrated solar power plant receives the energy from molten salt coming in at 560?C and leaving at 300?C in a counter flow heat exchanger where the water comes in at 3 MPa, 60?C and leaves at 450?C, 3 MPa. The molten salt has 5 kg/s flow with Cp = 1.5 kJ/kg K. What is the possible water flow rate, the rate of energy transfer, and the rate of entropy generation?