Parameters
Presets
Boiler Pressure Phigh
5.0 MPa
Condenser Pressure Plow
10 kPa
Boiler Exit Temp T1
400 °C
Above saturation = superheated steam
Turbine Efficiency ηt
0.85
Pump Efficiency ηp
0.85
Reheat Cycle
Reheat temperature = boiler exit temperature
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Thermal eff. ηth [%]
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Net work wnet [kJ/kg]
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Heat input qin [kJ/kg]
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Back work ratio [%]
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Turbine work wt [kJ/kg]
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Pump work wp [kJ/kg]
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Turbine exit quality x2
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Saturation temp. Tsat [°C]
Theory
Rankine cycle (4 state points):
Turbine work: $w_t = \eta_t(h_1 - h_{2s})$
Pump work: $w_p = v_f(P_{high}-P_{low})/\eta_p$
Heat input: $q_{in} = h_1 - h_4$
$$\eta_{th} = \frac{w_{net}}{q_{in}} = \frac{w_t - w_p}{q_{in}}$$Steam properties computed via polynomial approximations (simplified IAPWS-IF97)
Engineering Applications: Fossil fuel power plant design optimization · geothermal and waste heat recovery (ORC) · industrial steam turbine efficiency analysis · nuclear and solar thermal power cycle design.