Part08 Rankine Cycle
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Transcript of Part08 Rankine Cycle
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8/3/2019 Part08 Rankine Cycle
1/25
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8/3/2019 Part08 Rankine Cycle
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8/3/2019 Part08 Rankine Cycle
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8/3/2019 Part08 Rankine Cycle
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8/3/2019 Part08 Rankine Cycle
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8/3/2019 Part08 Rankine Cycle
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Closed Feedwater Heater - Cascading Drain Backwards1
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(b)Figure 1: Closed feedwater heaters cascading backwards. From Figure 2-15, page 52, El-Wakil.
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8/3/2019 Part08 Rankine Cycle
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Closed Feedwater Heater - Pumped Forward
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614
Determine the thermal efficiency, the required steam flow rate, and the moisture at theturbine exhaust for a reheat/regenerative cycle which is to produce 200 MW a t the turbinecoupling if the turbine throttle conditions are 15.5 MPa and 540 C; reheat is at 8.0 MPaand 590 C; one closed feedwater heater is at 3.4 MPa; an open feedwater heater is at 170kPa; and the condenser pressure is 13 kPa.The adiabatic turbine and pump efficiencies are 85%. The terminal temperature differencein the closed feedwater heater is 3C and the drain for the closed feedwater heater is trappedto the open feedwater heater.
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Determine the thermal efficiency, the required steam flow rate, and the moisture at theturbine exhaust for a reheat/regenerative cycle which is to produce 200 MW at the turbinecoupling if the turbine throttle conditions are 15.5 MPa and 540 C; reheat is at 8.0 MPaand 590 C; one closed feedwater heater is at 3.4 MPa; an open feedwater heater is at 170kPa; and the condenser pressure is 13 kPa.The adiabatic turbine and pump efficiencies are 85%. The terminal temperature differencein the closed feedwater heater is 3 C and the drain for the closed feedwater heater is trappedto the open feeciwater heater.
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8/3/2019 Part08 Rankine Cycle
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