A simple steam power plant with mass flow rate of 90 kg/s is shown in Figure 2. Water enters the boiler at a pressure of 120 bar and temperature of 320 C, and at constant pressure the temperature of water increases to 500 C. Then, superheated vapor enters the turbine to produce power. The water leaving the turbine has a temperature of 45 C and quality of 0.95. Neglect the heat transfer from the boiler and turbine to the environment and assume no kinetic and potential energy change. a. Find heat transfer during process 1-2. b. How much work was produced during process 2-3. c. If the work consumption of the auxiliary equipment of the plant (e.g. pumps - not shown in the picture) is equal to 2500 kW, what is the thermal efficiency of the power plant? (Hint: for calculating thermal efficiency, you need to calculate the net power.) d. What is the isentropic efficiency of the turbine? e. Sketch the two processes on a T-S diagram. Boiler 1 Figure 2 2 Turbine 3