A steam power plant operates on the reheat regenerative Rankine cycle with a closed feedwater heater....
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A steam power plant operates on the reheat regenerative Rankine cycle with a closed feedwater heater. Steam enters the turbine at 15 MPa and 650 °C at a rate of 30 kg/s and is condensed in the condenser at a pressure of 15 kPa. Steam is reheated at 5 MPa to 550°C. Some steam is extracted from the low-pressure turbine at 1.2 MPa, is completely condensed in the closed feedwater heater, and pumped to 13.5 MPa before it mixes with the feedwater at the same pressure. Assuming an isentropic efficiency of 92 percent for both the turbine and the pump, determine (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam extracted from the turbine for the closed feedwater heater, (c) the net power output, and (d) the thermal efficiency. A steam power plant operates on the reheat regenerative Rankine cycle with a closed feedwater heater. Steam enters the turbine at 15 MPa and 650 °C at a rate of 30 kg/s and is condensed in the condenser at a pressure of 15 kPa. Steam is reheated at 5 MPa to 550°C. Some steam is extracted from the low-pressure turbine at 1.2 MPa, is completely condensed in the closed feedwater heater, and pumped to 13.5 MPa before it mixes with the feedwater at the same pressure. Assuming an isentropic efficiency of 92 percent for both the turbine and the pump, determine (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam extracted from the turbine for the closed feedwater heater, (c) the net power output, and (d) the thermal efficiency.
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Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
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