Steam enters the condenser (a heat exchanger) of a power plant at 73 kg/s, 20 kPa and a quality of 85%. It exits as saturated liquid at the same pressure. On the other side of the heat exchanger, water from a lake or air can be used to provide the cooling. Compare the rate of entropy generation in the condenser, in kW/K, for both scenarios:
Air: Enters at 17oC, exits at 50oC.
Water: Enters at 9oC, exits at 34oC