A steam power plant operates on the Rankine cycle with reheat, using the specified conditions below. Using

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A steam power plant operates on the Rankine cycle with reheat, using the specified conditions below. Using stream numbering from Fig. 5.3, for each of the options below, determine

(a) The work output of each 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 and reheater;

(e) The thermal efficiency.Option i ii iii iv V T3 (C) 450 400 400 500 600 P3 (MPa) 5 5 4 4 4 P4(MPa) T5(C) 0.4 0.6 0.5 0.8 1.2 400 450

T 8 2 3 5 6' 6 S Figure 5.3 Rankine cycle with reheat. 8 7 Pump Boiler/ Superheater Condenser 3 I II Reheater

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