Consider the secondary side of a simplified PWR plant consisting only of the steam generator, turbine, condenser, and the feedwater pump. This plant is operating in an ideal Rankine cycle and producing dry saturated steam at a rate of 5.674E6 kg/h and at a pressure of 7 MPa. A two-phase mixture leaves turbine and enters the condenser at 0.0075 MPa. The feedwater pump demands 9.4 kJ/kg at steady state to pump water from the condenser to the steam generator. A river flowing adjacent to the plant provides the cooling water to the condenser. According to regulations, the rise in the temperature of the river water exiting the plant must not exceed 8 C. Find a) plant thermal efficiency, b) maximum efficiency, and c) the flow rate of the circulating water through the condenser tubes.
Consider the secondary side of a simplified PWR plant consisting only of the steam generator, turbine, condenser, and the feedwater pump. This plant is operating in an ideal Rankine cycle and producing dry saturated steam at a rate of 5.674E6 kg/h and at a pressure of 7 MPa. A two-phase mixture leaves turbine and enters the condenser at 0.0075 MPa. The feedwater pump demands 9.4 kJ/kg at steady state to pump water from the condenser to the steam generator. A river flowing adjacent to the plant provides the cooling water to the condenser. According to regulations, the rise in the temperature of the river water exiting the plant must not exceed 8 C. Find a) plant thermal efficiency, b) maximum efficiency, and c) the flow rate of the circulating water through the condenser tubes. [Ans.: 36.7%, 43.9%, and 9.3E8 kg/h]
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