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In a steam plant operating according to an ideal Rankine cycle, water vapor enters the turbine...

In a steam plant operating according to an ideal Rankine cycle, water vapor enters the turbine at 3.0 MPa pressure and 600 oC temperature and exits the turbine with 100 kPa and 0.8 degree of dryness. Heat is thrown from the condenser to the surrounding environment and the water is provided to be saturated liquid at 100 kPa. So what is the net turbine job for the unit mass?

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Answer #1

At p=3MPa and T=600 deg C the steam enthalpy is (From superheated steam tables)

At p=100kPa and 0.8 dryness the steam enthalpy is (From saturated steam tables)

The net work done by the turbine is

At p=100kPa, at pump inlet, the specific volume is

The work done on the pump is

Net work done by turbine is

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