modelElectricChillerParallel
Example to test the chiller cooling plant
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This model validates the district central cooling plant implemented in Buildings.DHC.Plants.Cooling.ElectricChillerParallel.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.Chillers.Data.ElectricEIR.ElectricEIRChiller_York_YT_1055kW_5_96COP_Vanes | perChi | Performance data of chiller | |
| Modelica.Units.SI.MassFlowRate | mCHW_flow_nominal | 18.3 | Nominal chilled water mass flow rate |
| Modelica.Units.SI.MassFlowRate | mCW_flow_nominal | 34.7 | Nominal condenser water mass flow rate |
| Modelica.Units.SI.PressureDifference | dpCHW_nominal | 44.8*1000 | Nominal chilled water side pressure |
| Modelica.Units.SI.PressureDifference | dpCW_nominal | 46.2*1000 | Nominal condenser water side pressure |
| Modelica.Units.SI.Power | QChi_nominal | mCHW_flow_nominal*4200*(6.67 - 18.56) | Nominal cooling capaciaty (Negative means cooling) |
| Modelica.Units.SI.MassFlowRate | mMin_flow | mCHW_flow_nominal*0.1 | Minimum mass flow rate of single chiller |
| Modelica.Units.SI.TemperatureDifference | dTApp | 3 | Approach temperature |
| Modelica.Units.SI.Power | PFan_nominal | 5000 | Fan power |
| Modelica.Units.SI.Temperature | TCHWSet | 273.15 + 8 | Chilled water temperature setpoint |
| Modelica.Units.SI.Time | tWai | 30 | Waiting time |
| Buildings.Fluid.Movers.Data.Generic | perCHWPum | Performance data for chilled water pumps | |
| Buildings.Fluid.Movers.Data.Generic | perCWPum | Performance data for condenser water pumps | |
| Modelica.Units.SI.Pressure | dpCHWPumVal_nominal | 6000 | Nominal pressure drop of chilled water pump valve |
| Modelica.Units.SI.Pressure | dpCWPumVal_nominal | 6000 | Nominal pressure drop of chilled water pump valve |
| Modelica.Units.SI.PressureDifference | dpCooTowVal_nominal | 6000 | Nominal pressure difference of the cooling tower valve |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.DHC.Plants.Cooling.ElectricChillerParallel | pla | District cooling plant | |
| Buildings.BoundaryConditions.WeatherData.ReaderTMY3 | weaDat | Weather data | |
| Modelica.Blocks.Sources.BooleanConstant | on | On signal of the plant | |
| Modelica.Blocks.Sources.Constant | TCHWSupSet | Chilled water supply temperature setpoint | |
| Fluid.MixingVolumes.MixingVolume | vol | Mixing volume | |
| Modelica.Thermal.HeatTransfer.Sources.PrescribedHeatFlow | fixHeaFlo | Fixed heat flow rate | |
| Fluid.FixedResistances.PressureDrop | res | Flow resistance | |
| Modelica.Blocks.Sources.Sine | loaVar | Variable demand load |
Contents
| Name | Description |
|---|---|
 Medium | Medium model for water |
Revisions
-
December 14, 2022, by Kathryn Hinkelman:
Enabled filters for CHW pumps and valves. Corrected pressure drop in loop. This is for issue 2912. -
October 20, 2021, by Chengnan Shi:
Revised the model for extensibility. This is for issue 2749. -
August 6, 2020 by Jing Wang:
First implementation.