modelThermostaticValve
Extends from AixLib.Obsolete.BaseClasses.ObsoleteModel, AixLib.Fluid.Interfaces.PartialTwoPortTransport.
Information
Overview
Model for a simple thermostatic valve.
Concept
Development of SimpleValve by incorporating the behaviour of a thermostatic head as a P controller with a maximum deviation of P and an influence of the pressure drop on the sensed temperature.
It is possible to not close the valve completely by allowing for some minimal leakage. Use this option carefully and always check the influence it might have on your results.
Example Results
AixLib.HVAC.Radiators.Examples.PumpRadiatorThermostaticValve
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | leakageOpening | 0.0001 | may be useful for simulation stability. Always check the influence it has on your results |
| Valve | |||
| Real | Kvs | 1.4 | Kv value at full opening (=1) |
| Thermostatic head | |||
| Real | Kv_setT | 0.8 | Kv value when set temperature = measured temperature |
| Real | P | 2 | Deviation of P-controller when valve is closed |
| Real | Influence_PressureDrop | 0.14 | influence of the pressure drop in K |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | opening | valve opening | |
| Real | TempDiff | Difference between measured temperature and set temperature | |
| Real | Influence_PressureDrop_inK | Influence of pressure drop in Kelvin. | |
| Modelica.Blocks.Interfaces.RealInput | T_room | temperature in room | |
| Modelica.Blocks.Interfaces.RealInput | T_setRoom | set temperature in room |
Revisions
-
November 2014 by Marcus Fuchs:
Changed model to use Annex 60 base class -
November 13, 2013 by Ana Constantin:
Implemented