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11rank_reheat

# 11rank_reheat - Rankine cycle at various steam pressure and...

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Boiler lp Turbine W t2 Condenser Feed Pump Q_dot H Q_dot L W fp hp Turbine W t1 3 4 2 5 6 1 Rankine cycle at various steam pressure and temperature with reheating this note calculates plot of η vs steam plant pressure with fixed condenser pressure (Temperature) and max temperature with reheating to saturation 460 deg C and 560 deg C. steam is extracted at 400kPa from hp turbine for reheating to boiler outlet temperature. 1 - vacuum; saturated liquid T=40 C 2 - sub cooled liquid at boiler pressure P=3, 6, 9, 12 MPa 3 - saturated vapor, superheated vapor T=460 C, T=560 C, p = p 2 4 - extraction steam; superheated vapor @ 400 kPa or ... vapor + liquid @ saturation temperature and pressure tbd 5 - superheated vapor @ saturation temperasature for p 2 , T=460 C, T=560 C, p = p 4 = 400 kPa 6 - vapor + liquid @ saturation temperature (40 C) and pressure or ...superheated vapor @ saturation pressure for 40 C; tbd the results are shown below in the details of calculation for state 4 - extraction steam; superheated vapor @ 400 kPa or ... vapor + liquid @

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