Question: Steam at 6 MPa and 500°C enters a two-stage adiabatic turbine at a rate of 15 kg/s. Ten percent of the steam is extracted at

Steam at 6 MPa and 500°C enters a two-stage adiabatic turbine at a rate of 15 kg/s. Ten percent of the steam is extracted at the end of the first stage at a pressure of 1.2 MPa for other use. The remainder of the steam is further expanded in the second stage and leaves the turbine at 20 kPa. Determine the power output of the turbine, assuming
(a) The process is reversible and
(b) The turbine has an isentropic efficiency of 88 percent.

Steam at 6 MPa and 500°C enters a two-stage

6 MPa 500 C \ STEAM TURBINE (1st stage) (2nd stage) 1.2 MPa 90% 20 kPa 10%

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