Question

Consider the same cycle with non-isentropic turbine and pump. (e) Plot the variation of net power output, rate of heat transfer through the boiler, and cycle thermal efficiency for equal values of isentropic efficiency for turbine and pump ranging from 70% to 100%. Suppose the cooling water circulating through the condenser enters at 22C (State 5) and exits at 35C (State 6) for the ideal cycle. The cooling water leaving the condenser enters a wet cooling tower and is cooled back to 22C by using ambient air entering the cooling tower at total pressure of 1 atm, dry bulb temperature of 20C, and relative humidity of 60% (State 7). The air exiting at the top of the cooling tower is saturated at 30C (State 8). There is make-up water supply at 22C (State 9). (f) Calculate the mass flow rate (kg/s) of cooling water. (g) Find the mass flow rate (kg/s) of air entering the cooling tower. (h) Determine the mass flow rate (kg/s) required of the make-up water in the cooling tower.

Answer 1

The 60% is the total of the humid y