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Regenerative Rankine cycle with one contact feedwater heater
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[QUOTE="Kamuna, post: 6620004, member: 700027"] [B]Homework Statement:[/B] a) required steam generated from the boiler per hour b) extracted steam per hour for feedwater heater c) thermal efficiency of the cycle [B]Relevant Equations:[/B] rankine cycle equations My question is how do i get : A. required steam generated from the boiler per hour B. extracted steam per hour for feedwater heater C. thermal efficiency of the cycle I can solve the thermal efficiency but A and B is giving me difficulties, i know when solving the extraction of steam needs mass flow rate but in the given there isnt. I am assuming the 50 MW is the key to solving these two ? I still don't know the exact formula in finding A and B but I attached my solutions here although its still on finding the 9 enthalpies. I just need to know the correct formula in solving for A and B. Thanks in advance Heres my problem set: In a 50 MW steam power plant operating on regenerative Rankine cycle with one contact feedwater heater, steam enters the turbine at 10 MPa, 300 C and condensed in the condenser with a pressure at 10 kPa. Expansion of steam at high-pressure stage turbine up to saturation at 3.0 MPa then reheated to 300 C. After partial expansion at low-pressure stage turbine to 750 kPa, some steam is bled at this pressure for feedwater heating while the remaining steam is expanded to condenser pressure. Determine: [LIST] [*]required steam generated from the boiler per hour [*]extracted steam per hour for feedwater heater [*]thermal efficiency of the cycle [/LIST][ATTACH type="full"]299592[/ATTACH][ATTACH type="full"]299593[/ATTACH] [/QUOTE]
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Regenerative Rankine cycle with one contact feedwater heater
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