Physics, 29.06.2019 04:30 Morehollie7229

Asteam power plant operates on a rankine cycle that combines both regenerative and reheat operations. the working luid is expanded in three stages. the high pressure turbine operates at 8 mpa with an net temperature of 600°c. the condenser operates at a pressure of 10 kpa. the steam is expaded to 1.2 mpa in the first turbine, and a fraction is then bled off to feed an open feedwater heater. the remaining steam is then expanded to 600 kpa and anther fractionis bled olf to feed a second open feedwater heater. the remaining steam is then heated to 550 c before entering the final turbine where it is expanded to 10 kpa. assume the pumps have an isentropie efficiency of yp = 95% and the turbines have an isentropic efficiency of 'r = 87.5%. (a) draw out this cycle on a block diagram. be sure to label all your state points and be consistent (b) sketch a t-s diagram of the cycle on the attached sheet. (c) perform a first law analysis to determine the thermal efficiency of the cycle. report your answer and record any property values used in your calculations on the attached sheet. (d) determine the required mass low rate for the plant to produce 8 mw of power (e) perform a second law analysis to determine the rate of exergy destruction, , and the second law efficiency, , for each device and for the entire cycle. assume the environmental conditions are to = 25°c and po = 1 bar, the heat tranfer to the boiler is coming from a coal fire, with a combustion temperature of t" = 1500. c, and the condenser is using cooling water froni a nearby hody of water at t 20 c

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Asteam power plant operates on a rankine cycle that combines both regenerative and reheat operations...

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