modelSimpleFictitiousWall
Model of a simple fictitious wall to compute compressor's heat losses
Information
This is a model of a fictitious wall that describes the shell of the compressor. It consists of four heat ports, i.e. for the inlet and outlet of the compressor as well as for the ambient and compression chamber. It is assumed that the wall consists of a time invariante heat capacity; additionally, it is assumed that the thermal conductance for the calculation of the heat flow between ambient and fictitious wall is also time invariante.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| General › General | |||
| Modelica.Units.SI.Mass | mWal | 2.5 | Mass of the fictitious wall |
| Modelica.Units.SI.SpecificHeatCapacity | cpWal | 450 | Specific heat capacity of the fictitious wall |
| Modelica.Units.SI.ThermalConductance | kAMeaAmb | 10 | Effective mean thermal conductance coefficient between fictitious wall and ambient |
| Advanced › Initialisation | |||
| Boolean | iniTWal0 | true | = true, if wall is initialised at fixed temperature; Otherwise, steady state initialisation |
| Modelica.Units.SI.Temperature | TWal0 | 343.15 | Temperature of wall at initialisation |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heaPorComInl | Heart port for compressor's inlet | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heaPorCom | Heart port for compresso's engine (compression chamber) | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heaPorComOut | Heart port for compressor's outlet | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | heaPorAmb | Heart port for ambient | |
| Modelica.Units.SI.Temperature | TWal | Temperature of fictitious wall |
Revisions
- October 28, 2017, by Mirko Engelpracht:
First implementation (see issue 467).