The istentropic efficiency of the low pressure pump

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Reference no: EM13719921

Water is the working fluid in a regenerative Rankine cycle. Steam exits the first-stage turbine at 8 bar and its quality is 95%. 20% of that steam is extracted and diverted to an open feed water heater operating at 8 bar. The remaining steam expands through the second stage turbine to the condenser pressure of 6 kPa. Saturated liquid exits the condenser and is pumped to the open feed water heater by the low-pressure pump. Saturated liquid exits the open feed water heater at 8 bars.

Determine:

1. The work input necessary to operate the low pressure pump, in kJ per kg of water flowing through the pump.

2. The istentropic efficiency of the low pressure pump.

Reference no: EM13719921

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