modelPartialEngineEfficiency
Based model used by all models describing engine efficiencies
Extends from BaseClasses.PartialEfficiency (Base model that is used to define all further efficiencies).
Information
This is a base model for overall engine efficiency models that are
required for various compressor models. It defines some basic inputs
and outputs that are commonly used by efficiency models and these
inputs and outputs are summarised below:
| Type | Name | Comment |
|---|---|---|
| input |
epsRef
|
Ratio of the real and the ideal displacement volume |
| input |
VDis
|
Displacement volume |
| input |
piPre
|
Pressure ratio |
| input |
rotSpe
|
Rotational speed |
| input |
staInl
|
Thermodynamic state at compressor's inlet conditions |
| input |
staOut
|
Thermodynamic state at compressor's out conditions |
| input |
TAmb
|
Ambient temperature |
| output |
ηeng
|
Overall engine efficiency |
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | useIseWor | false | = true, if isentropic work is used to compute compressor's power consumption |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Efficiency | epsRef (from PartialEfficiency) | Ratio of the real and the ideal displacement volume | |
| Modelica.Units.SI.Volume | VDis (from PartialEfficiency) | Displacement volume | |
| Real | piPre (from PartialEfficiency) | Ratio of compressor's outlet and inlet pressure | |
| Modelica.Units.SI.Frequency | rotSpe (from PartialEfficiency) | Compressor's current rotational speed | |
| Medium.ThermodynamicState | staInl (from PartialEfficiency) | Thermodynamic state at compressor's inlet | |
| Medium.ThermodynamicState | staOut (from PartialEfficiency) | Thermodynamic state at compressor's outlet | |
| Modelica.Units.SI.Temperature | TAmb (from PartialEfficiency) | Ambient temperature | |
| Modelica.Units.SI.Efficiency | etaEng | Overall engine efficiency |
Revisions
- October 20, 2017, by Mirko Engelpracht:
First implementation (see issue 467).