Water is the working fluid in an ideal Rankine cycle with regeneration. All steam enters the first turbine stage at 12 MPa, 520 °C and expands to 1 MPa where some of the steam is extracted and diverted to the open feedwater heat exchanger operating at 1 MPa. The remaining steam keeps expanding through the second turbine stage and exits at 6 kPa, then goes through a heat exchange to cool to saturated liquid water. After that, the pump increases the pressure back to 1 MPa. Then it goes to the feedwater heat exchanger. Satureated liquid water leaves the feedwater heat exchanger then pumped back to 12 MPa. Find: (1) Sketch the process on a T-s diagram. (2) Thermal efficiency. (3) Mass flow rate of the total steam if net power output is 330 MW.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Water is the working fluid in an ideal Rankine cycle with regeneration. All steam enters the first
turbine stage at 12 MPa, 520 °C and expands to 1 MPa where some of the steam is extracted and
diverted to the open feedwater heat exchanger operating at 1 MPa. The remaining steam keeps
expanding through the second turbine stage and exits at 6 kPa, then goes through a heat
exchange to cool to saturated liquid water. After that, the pump increases the pressure back to 1
MPa. Then it goes to the feedwater heat exchanger. Satureated liquid water leaves the feedwater
heat exchanger then pumped back to 12 MPa. Find:
(1) Sketch the process on a T-s diagram.
(2) Thermal efficiency.
(3) Mass flow rate of the total steam if net power output is 330 MW.
Transcribed Image Text:Water is the working fluid in an ideal Rankine cycle with regeneration. All steam enters the first turbine stage at 12 MPa, 520 °C and expands to 1 MPa where some of the steam is extracted and diverted to the open feedwater heat exchanger operating at 1 MPa. The remaining steam keeps expanding through the second turbine stage and exits at 6 kPa, then goes through a heat exchange to cool to saturated liquid water. After that, the pump increases the pressure back to 1 MPa. Then it goes to the feedwater heat exchanger. Satureated liquid water leaves the feedwater heat exchanger then pumped back to 12 MPa. Find: (1) Sketch the process on a T-s diagram. (2) Thermal efficiency. (3) Mass flow rate of the total steam if net power output is 330 MW.
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