One type of feedwater heater for preheating the water before entering a boiler operates on the principle of mixing the water with steam that has been bled from the turbine. For the states shown in Fig. P7.112, calculate the rate of net entropy increase for the process, assuming the process to be steady flow and adiabatic. 

Transcribed Image Text:

P2 = 1 MPa T2 = 200°C (2) P3 = 1 MPa T3 = 160°C m3 = 4 kg/s Feedwater heater (3) P, = 1 MPa T, = 40°C %3! FIGURE P7.112