A steam power plant with a closed feedwater Heater operates on a regenerative Rankine cycle with reheating. Steam enters the turbine at 8 MPa pressure and 5YX C temperature, 1Y kg/s flow rate, and condenses in the condenser at 2X kPa pressure. The intermediate heating is condensing at a pressure of 3 MPa. Intermediate heating is done at a pressure of 3 MPa and the steam is heated to a temperature of 5X0 C. Some steam is separated from the low pressure turbine at a pressure of 1 MPa, after it is completely condensed in the closed feed water heater, it is pumped to a pressure of 8 MPa before mixing with the feed water at the same pressure. Assuming the isentropic efficiencies of the turbines and pumps are 8Y.X%, calculate (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam leaving the turbine for the closed feedwater heater, (c) the net power, and (d) the thermal efficiency.
A steam power plant with a closed feedwater Heater operates on a regenerative Rankine cycle with reheating. Steam enters the turbine at 8 MPa pressure and 5YX C temperature, 1Y kg/s flow rate, and condenses in the condenser at 2X kPa pressure. The intermediate heating is condensing at a pressure of 3 MPa. Intermediate heating is done at a pressure of 3 MPa and the steam is heated to a temperature of 5X0 C. Some steam is separated from the low pressure turbine at a pressure of 1 MPa, after it is completely condensed in the closed feed water heater, it is pumped to a pressure of 8 MPa before mixing with the feed water at the same pressure. Assuming the isentropic efficiencies of the turbines and pumps are 8Y.X%, calculate (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam leaving the turbine for the closed feedwater heater, (c) the net power, and (d) the thermal efficiency.
note: x=2,y=7
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