modelModularCompressorsSensors
Extends from BaseClasses.PartialModularCompressors.
Information
This is a model of modular compressors that are used, for example, in
close-loop systems like heat pumps or chillers.
It consists of nCom compressors in parallel and also
nCom PID conrollers if no external controller is used.
Additionally, four different sensors (i.e. absolute pressure,
temperature, mass flow rate, steam quality) are located at each
compressor's outlet.
Modeling approaches
This base model mainly consists of two sub-models. Therefore, please checkout these sub-models for further information of underlying modeling approaches and parameterisation:
- AixLib.Fluid.Movers.Compressors.BaseClasses.PartialCompressor.
- AixLib.Controls.HeatPump.ModularHeatPumps.ModularCompressorController.
The first sub-model describes a simple compressor that is defined in AixLib.Fluid.Movers.Compressors.SimpleCompressors; the second sub-model describes the internal controller model.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| General › Sensors | |||
| Modelica.Units.SI.Time | tau | 1 | Time constant at nominal flow rate |
| Boolean | transferHeat | false | if true, temperature T converges towards TAmb when no flow |
| Modelica.Units.SI.Temperature | TAmb | Medium.T_default | Fixed ambient temperature for heat transfer |
| Modelica.Units.SI.Time | tauHeaTra | 1200 | Time constant for heat transfer, default 20 minutes |
| Advanced › Initialisation Sensors | |||
| Modelica.Blocks.Types.Init | initTypeSen | Modelica.Blocks.Types.Init.InitialState | Type of initialization (InitialState and InitialOutput are identical) |
| Modelica.Units.SI.Temperature | T_start | Medium.T_default | Initial or guess value of output (= state) |
| Modelica.Units.SI.SpecificEnthalpy | h_out_start | Medium.specificEnthalpy_pTX(p = Medium.p_default, T = Medium.T_default, X = Medium.X_default) | Initial or guess value of output (= state) |
| Advanced › Diagnostics | |||
| Boolean | show_parSen | false | = true, if sensors' input parameters are shown in results |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Sensors.ModularSensors | modSen | Model that contains different sensors located behind compressors |
Revisions
- October 20, 2017, by Mirko Engelpracht:
First implementation (see issue 467).