Problem# 1 (Part-2) A stream turbine gets its supply of steam at 70 bar and 450 °C. After expanding to 25 bar in high pressure stages, the steam is reheated to 420 °C at a constant pressure. Next, the steam is expanded in intermediate pressure stages to an appropriate minimum pressure such that part of the steam bled at this pressure heats the open feedwater to a temperature of 180 "C. The remaining steam expands from this pressure to a condenser pressure of 0.07 bar in the low pressure stages. The isentropic efficiency of the HP stage is 78.5% while that of the intermediate and LP stages is 83% each. The flow diagram of the steam turbine power plant is shown below. Assume, no losses in the pump work. (1) Sketch the T-s diagram of all the power plant cycle showing all the processes. (2) Determine the quantity of steam bled per kg of steam flow at the turbine inlet. (0.206 kg/kg of steam flow) (3) Calculate the cycle thermal efficiency. (35.92%) 70bar, 450°C Generator H-R Turbine T.P Turbine L.P. Turbine to 25ba420°C (1-m)kg Boiler 1007bar Reheater mkg FW (1-m) kg Healer Condenser (1-m)kg Pump- Pump-2