modelPartialCoolingTowersSubsystem
Partial class for test models of subsystems
Information
Partial model to test cooling tower models that are connected to a weather data reader and a simple fluid loop to which a constant amount of heat is added. The pump in the cooling tower loop is switched on and off depending on the temperature of the control volume to which the heat is added.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal | 0.5 | Design water flow rate |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.BoundaryConditions.WeatherData.Bus | weaBus | Weather data bus |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.Interfaces.PartialTwoPortInterface | tow | ||
| Buildings.Fluid.Movers.FlowControlled_m_flow | pum | Pump for condenser water loop | |
| Buildings.BoundaryConditions.WeatherData.ReaderTMY3 | weaDat | ||
| Buildings.Controls.OBC.CDL.Reals.Switch | swi | Control switch for chilled water pump | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | TSwi | Switch temperature for switching tower pump on | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | zer | Zero flow rate | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | m_flow | Water flow rate | |
| Buildings.Fluid.MixingVolumes.MixingVolume | vol | ||
| Buildings.Fluid.Sources.Boundary_pT | exp | Expansion vessel | |
| Modelica.Thermal.HeatTransfer.Sources.FixedHeatFlow | fixHeaFlo | Fixed heat flow rate | |
| Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor | TVol | Water temperature | |
| Buildings.Fluid.Sensors.TemperatureTwoPort | TEnt | Water entering temperature | |
| Buildings.Controls.OBC.CDL.Reals.Hysteresis | hys | Pump on-off control | |
| Buildings.Controls.OBC.CDL.Reals.Subtract | sub | Inputs different |
Contents
| Name | Description |
|---|---|
| Medium model for water |
Revisions
-
December 11, 2023, by Jianjun Hu:
Reimplemented pump on-off control to avoid using the obsoleteOnOffController. This is for #3595. -
November 16, 2022, by Michael Wetter:
Setuse_inputFilter=false. -
January 28, 2022, by Hongxiang Fu:
Added a temperature sensor for better measurement of the entering water temperature. This is for #2866. -
May 28, 2021, by Chengnan Shi:
Duplicate Buildings.Fluid.HeatExchangers.CoolingTowers.Examples.BaseClasses.PartialStaticTwoPortCoolingTower
Changed replaceable cooling tower model toPartialTwoPortInterfacefor reusability in Buildings.DHC.Plants.Cooling.Subsystems.Examples.