A combined gas-vapor power plant uses both the Rankine cycle and Brayton cycle. The gas turbine on the Brayton cycle side has a pressure ratio of 8. The compressor is supplied with air at 27 °C and a mass flow rate of 12 kg/s. The compressed air then supplied to the combustion chamber where the temperature of the air is increased to 1000 C with heat addition. After the expansion process of the Brayton cycle, heat rejection takes place in a heat exchanger where steam is heated to 450 °C at 10 MPa. Air leaves the heat exchanger with a temperature of 45 °C. The steam leaving the turbine is condensed at 19.947 kPa. Assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate of the steam?
A combined gas-vapor power plant uses both the Rankine cycle and Brayton cycle. The gas turbine on the Brayton cycle side has a pressure ratio of 8. The compressor is supplied with air at 27 °C and a mass flow rate of 12 kg/s. The compressed air then supplied to the combustion chamber where the temperature of the air is increased to 1000 C with heat addition. After the expansion process of the Brayton cycle, heat rejection takes place in a heat exchanger where steam is heated to 450 °C at 10 MPa. Air leaves the heat exchanger with a temperature of 45 °C. The steam leaving the turbine is condensed at 19.947 kPa. Assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate of the steam?
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