modelSteamTurbineVarEta
Steam turbine with variable efficiency
Extends from ThermoPower.Water.BaseClasses.SteamTurbineBase (Steam turbine).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | explicitIsentropicEnthalpy (from SteamTurbineBase) | true | Outlet enthalpy computed by isentropicEnthalpy function |
| Medium.MassFlowRate | wnom (from SteamTurbineBase) | Inlet nominal flowrate | |
| Medium.AbsolutePressure | pnom (from SteamTurbineBase) | Nominal inlet pressure | |
| Real | eta_mech (from SteamTurbineBase) | 0.98 | Mechanical efficiency |
| Boolean | usePartialArcInput (from SteamTurbineBase) | false | Use the input connector for the partial arc opening |
| SI.Area | Kt | Kt coefficient of Stodola's law | |
| Real | eta_iso_nom | 0.92 | Nominal isentropic efficiency |
| Real | x | 0.5 | Degree of reaction |
| SI.Length | Rm | Mean ray | |
| Integer | n | Number of stages | |
| Initialisation | |||
| Medium.MassFlowRate | wstart (from SteamTurbineBase) | wnom | Mass flow rate start value |
| SI.PerUnit | PRstart (from SteamTurbineBase) | Pressure ratio start value | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | partialArc (from SteamTurbineBase) | Partial arc opening in p.u. | |
| Modelica.Mechanics.Rotational.Interfaces.Flange_a | shaft_a (from SteamTurbineBase) | ||
| Modelica.Mechanics.Rotational.Interfaces.Flange_b | shaft_b (from SteamTurbineBase) | ||
| FlangeA | inlet (from SteamTurbineBase) | ||
| FlangeB | outlet (from SteamTurbineBase) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ThermoPower.System | system (from SteamTurbineBase) | System wide properties | |
| Medium.ThermodynamicState | steamState_in (from SteamTurbineBase) | ||
| Medium.ThermodynamicState | steamState_iso (from SteamTurbineBase) | ||
| SI.Angle | phi (from SteamTurbineBase) | shaft rotation angle | |
| SI.Torque | tau (from SteamTurbineBase) | net torque acting on the turbine | |
| SI.AngularVelocity | omega (from SteamTurbineBase) | shaft angular velocity | |
| Medium.MassFlowRate | w (from SteamTurbineBase) | Mass flow rate | |
| Medium.SpecificEnthalpy | hin (from SteamTurbineBase) | Inlet enthalpy | |
| Medium.SpecificEnthalpy | hout (from SteamTurbineBase) | Outlet enthalpy | |
| Medium.SpecificEnthalpy | hiso (from SteamTurbineBase) | Isentropic outlet enthalpy | |
| Medium.SpecificEntropy | sin (from SteamTurbineBase) | Inlet entropy | |
| Medium.AbsolutePressure | pin (from SteamTurbineBase) | Outlet pressure | |
| Medium.AbsolutePressure | pout (from SteamTurbineBase) | Outlet pressure | |
| SI.PerUnit | PR (from SteamTurbineBase) | pressure ratio | |
| SI.Power | Pm (from SteamTurbineBase) | Mechanical power input | |
| SI.PerUnit | eta_iso (from SteamTurbineBase) | Isentropic efficiency | |
| SI.PerUnit | theta (from SteamTurbineBase) | Partial arc opening in p.u. | |
| Real | y | Ratio uf/wiso | |
| Real | uf | Mean peripheral velocity of the rotor | |
| Real | viso | Mean velocity of the fluid in isentropic conditions |
Contents
| Name | Description |
|---|---|
| curveEta_iso | Characteristich curve of efficiency |