A steam power plant operates on an ideal reheat regenerative Rankine cycle which has a net...

 

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A steam power plant operates on an ideal reheat regenerative Rankine cycle which has a net power output of 80 MW. Steam enters the high pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. A fraction of the steam is extracted at this pressure to heat the feedwater in a closed feedwater heater. The rest of the steam is reheated to 500°C and then it is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. It is assumed that the feedwater leaves the closed feedwater heater (state 9) at the condensation temperature of the extracted steam and that the extracted steam High-P turbine Low-P turbine Boiler 1-y leaves the closed feedwater heater (state 3) as saturated liquid. Mixing chamber 8. Closed FWH a) show the T-s diagram for the cycle, b) calculate the mass flow rate of steam passing through the boiler, Condenser c) calculate the thermal efficiency of the cycle. Pump II Pump I A steam power plant operates on an ideal reheat regenerative Rankine cycle which has a net power output of 80 MW. Steam enters the high pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. A fraction of the steam is extracted at this pressure to heat the feedwater in a closed feedwater heater. The rest of the steam is reheated to 500°C and then it is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. It is assumed that the feedwater leaves the closed feedwater heater (state 9) at the condensation temperature of the extracted steam and that the extracted steam High-P turbine Low-P turbine Boiler 1-y leaves the closed feedwater heater (state 3) as saturated liquid. Mixing chamber 8. Closed FWH a) show the T-s diagram for the cycle, b) calculate the mass flow rate of steam passing through the boiler, Condenser c) calculate the thermal efficiency of the cycle. Pump II Pump I