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A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam...

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Mechanical Engineering

A power plant operates on a regenerative vapor power cycle withone open feedwater heater. Steam enters the first
turbine stage at 12 MPa, 520â—¦C and expands to 1 MPa, where some ofthe steam is extracted and diverted to the open
feedwater heater at 1 MPa. The remaining steam expands through thesecond turbine stage to the condenser pressure of
6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa.For isentropic processes in the turbines and pumps,
determine for the cycle.
a) The thermal efficiency.
b) The net power developed, in MW, for a mass flow rate of 106 kg/hinto the first-stage turbine.

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