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Engineering and Comp Sci Homework Help
Understanding Rankine Cycle Pressures: Should P2 Equal P3?
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[QUOTE="Kamuna, post: 6618764, member: 700027"] [B]Homework Statement:[/B] determine: a) Electrical power output of the plant if mechanical efficiency & generator efficiency are 88 % & 92 %, respectively. b) Heat added in the steam generator if boiler efficiency is 85 % c) Plant thermal efficiency [B]Relevant Equations:[/B] Rankine cycle Is this the right path in solving this problem? Am i finding the correct enthalpies? I am also having difficulty understanding so what I've understood is that in a rankine cycle P2=P3 but here P2 is given and P3 has a given variable which is T=25 C too so should I neglect P2=P3? Heres my problem set and the attempt to solve it: In a Rankine cycle power plant superheated steam enters the turbine at 18 MPa and 580 C. Steam expands through a single stage turbine and discharges at 6 kPa with stage efficiency of 82 %. The condensate leaves the condenser at 25 C and pumped to 18.5 MPa going to the steam generator. The pump efficiency is 77 %. For steam flow of 9,000 kg/hr, determine: [LIST] [*]Electrical power output of the plant if mechanical efficiency & generator efficiency [*]are 88 % & 92 %, respectively. [*]Heat added in the steam generator if boiler efficiency is 85 % [*]Plant thermal efficiency [/LIST] Any help would be much appreciated, thanks [ATTACH type="full"]299450[/ATTACH] [/QUOTE]
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Understanding Rankine Cycle Pressures: Should P2 Equal P3?
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