A steam power plant operating on a simple ideal Rankine cycle maintains the boiler at 6000 kPa, the turbine inlet at 600C, and the condenser at 50 kPa. Compare the thermal efficiency of this cycle when it is operated so that the liquid enters the pump as a saturated liquid against that when the liquid enters the pump 11.3C cooler than a saturated liquid at the condenser pressure.

Question

A steam power plant operating on a simple
ideal Rankine cycle maintains the boiler at 6000 kPa, the
turbine inlet at 600C, and the condenser at 50 kPa. Compare
the thermal efficiency of this cycle when it is operated
so that the liquid enters the pump as a saturated liquid against
that when the liquid enters the pump 11.3C cooler than a
saturated liquid at the condenser pressure.

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