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(Solved): #8 Reheat-regenerative Vapor Power Cycle With Four Feedwater Heaters (three Closed And One Open) Wit ...

#8 Reheat-regenerative vapor power cycle with four feedwater heaters (three closed and one open) with water as working fluid

State p (bar) T (°C) X | h (kJ/kg) 3573.5 3334.7 s (kJ/kg•K) 6.6399 6.6399 m: (kg/s) 200 1 2s 2 3s 3 160 80 80 40 40 20 20 20

#8 Reheat-regenerative vapor power cycle with four feedwater heaters (three closed and one open) with water as working fluid for the plant. Steam enters turbine with mass flow rate of 200 kg/s. Each turbine stage has an isentropic efficiency of 80%. Condensate leaves each closed feedwater heater as saturated liquid at the respective extraction pressures. The heat transfer from the surfaces of each turbine stage, the pumps, all closed feedwater heaters, all traps, and the open feedwater heater are negligible. Let To = 25 °C, and Po = 1 bar. Find the missing values of enthalpy and entropy in table below Steam generator Condenser Closed heater Closed heater Deaerating open heater Closed heater W + 13 12+ Wp2A +10 9+ 20+ WT 10 +15 16+1 18 Main boiler feed pump Condensate pump State p (bar) T (°C) X | h (kJ/kg) 3573.5 3334.7 s (kJ/kg•K) 6.6399 6.6399 m: (kg/s) 200 1 2s 2 3s 3 160 80 80 40 40 20 20 20 | 500 3467.6 3172.1 7.4317 7.4317 6s 6 7s 8 2 2 0.1 0.1 0.1 8s 8 9 11 8 12. O 191.83 192.63 595.92 721.11 738.05 1067.3 1316.6 0.6493 0.6517 1.7553 2.0462 2.0837 2.7584 3.2068 0 0.1338 13 14 15 16 17 18 19 20 / 160 160 80 40 40 8 2 0.1 160 0 1087.3 1087. 504.70 504.70 1269.1 2.7964 2.8716 1.5301 1.6304 3.1245 0.1788 0 0.1308 21

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