A steam power plant operates on the Rankine cycle according to the specified conditions below. Using stream

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A steam power plant operates on the Rankine cycle according to the specified conditions below. Using stream numbering from Fig. 5.2, for each of the options below, determine:

(a) The work output of the turbine per kg of steam;

(b) The work input of the feedwater pump per kg of circulated water;

(c) The flowrate of steam required;

(d) The heat input required in the boiler/superheater;

(e) The thermal efficiencyOption i ii T3 (C) 600 600 P3 (MPa) 10 8 P4(MPa) nturbine 0.01 0.8 0.01 0.8 npump 0.75 0.75 Plant Capacity 80

Option iii iv V T3(C) 400 500 600 P3 (MPa) 4 4 4 P4(MPa) 0.01 0.02 0.02 nturbine 0.83 0.85 0.85 npump 0.95

T 6 5 Figure 5.2 Rankine cycle. S 2 3 4'4 6 5 Ws Pump Hot Side, QH Boiler/ Superheater Condenser Cold Side,

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