Consider a Rankine cycle with an ideal intermediate steam pickup, one of which is open and...

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Mechanical Engineering

Consider a Rankine cycle with an ideal intermediate steampickup, one of which is open and the other is closed feed waterheaters. The steam enters the turbine at 12.5 MPa pressure and 550degrees Celsius temperature and expands to 10 kPa condenserpressure. The steam separated from the turbine at 0.8 MPa pressureis sent to the closed feed water heater and the steam separated at0.3 MPa pressure is sent to the open feed water heater. The feedwater is heated to the condensing temperature of the steam leavingthe turbine in the closed heater. The steam comes out of the closedheater as a saturated liquid, then the pressure is lowered into avalve and sent to the open feed water heater. Show the cycle in aT-s diagram with saturated liquid and saturated vapor curves.

Water flow that must pass through the boiler for the production of 250 MW net power,

Calculate the thermal efficiency of the cycle.

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