pair: idaes.models_extra.power_generation.unit_models.helm.turbine_stage;HelmIsentropicTurbine
idaes.models_extra.power_generation.unit_models.helm.turbine
This is a steam power generation turbine model for the basic isentropic turbine calculations. It is the basis of the TurbineInletStage
<reference_guides/model_libraries/power_generation/unit_models/turbine_inlet:Turbine (Inlet Stage)>
, TurbineOutletStage <reference_guides/model_libraries/power_generation/unit_models/turbine_inlet:Turbine (Outlet Stage)>, and, TurbineOutletStage <reference_guides/model_libraries/power_generation/unit_models/turbine_inlet:Turbine (Stage)> models.
Variable | Symbol | Index Sets | Doc |
---|---|---|---|
efficiency_isentropic |
ηisen | time | Isentropic efficiency |
deltaP |
ΔP | time | Pressure change (Pout − Pin) [Pa] |
ratioP |
Pratio | time | Ratio of discharge pressure to inlet pressure |
This model provides two expressions that are not available in the pressure changer model.
Expression | Symbol | Index Sets | Doc |
---|---|---|---|
h_is |
his | time | Isentropic outlet molar enthalpy [J/mol] |
delta_enth_isentropic |
Δhis | time | Isentropic enthalpy change (his − hin) [J/mol] |
work_isentropic |
wis | time | Isentropic work (W) |
In addition to the mass and energy balances provided by the control volume the following equation is used to calculate the outlet enthalpy, so work comes from the control volume energy balance.
hout = hin − ηis(hin−his)
To initialize the turbine model, a reasonable guess for the inlet condition and deltaP and efficiency should be set by setting the appropriate variables.
HelmIsentropicTurbine
HelmIsentropicTurbineData