modelElectricChillerParallel
Model that test electric chiller parallel
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example demonstrates how the chiller parallel can operate under different performance curves.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Power | P_nominal | -per1.QEva_flow_nominal/per1.COP_nominal | Nominal compressor power (at y=1) |
| Modelica.Units.SI.TemperatureDifference | dTEva_nominal | 10 | Temperature difference evaporator inlet-outlet |
| Modelica.Units.SI.TemperatureDifference | dTCon_nominal | 10 | Temperature difference condenser outlet-inlet |
| Real | COPc_nominal | 3 | Chiller COP |
| Modelica.Units.SI.MassFlowRate | mEva_flow_nominal | per1.mEva_flow_nominal | Nominal mass flow rate at evaporator |
| Modelica.Units.SI.MassFlowRate | mCon_flow_nominal | per1.mCon_flow_nominal | Nominal mass flow rate at condenser |
| Buildings.Fluid.Chillers.Data.ElectricEIR.ElectricEIRChiller_McQuay_WSC_471kW_5_89COP_Vanes | per1 | Chiller performance data | |
| Buildings.Fluid.Chillers.Data.ElectricEIR.ElectricEIRChiller_York_YT_563kW_10_61COP_Vanes | per2 | Chiller performance data |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Applications.BaseClasses.Equipment.ElectricChillerParallel | chiPar | Chillers with identical nominal parameters but different performance curves | |
| Fluid.Sources.Boundary_pT | sou1 | Pressure boundary condition | |
| Fluid.Sources.Boundary_pT | sou2 | Pressure boundary condition | |
| Buildings.Fluid.Sources.Boundary_pT | sin1 | Pressure boundary condition | |
| Buildings.Fluid.Sources.Boundary_pT | sin2 | Pressure boundary condition | |
| Modelica.Blocks.Sources.Ramp | TSet | Set point for leaving chilled water temperature | |
| Modelica.Blocks.Sources.Ramp | TCon_in | Condenser inlet temperature | |
| Modelica.Blocks.Sources.Ramp | TEva_in | Evaporator inlet temperature | |
| Modelica.Blocks.Sources.Pulse | pulse | Pulse input signal | |
| Modelica.Blocks.Logical.GreaterThreshold | greaterThreshold | Switch to switch chiller on or off | |
| Buildings.Fluid.FixedResistances.PressureDrop | res1 | Flow resistance | |
| Buildings.Fluid.FixedResistances.PressureDrop | res2 | Flow resistance |
Contents
| Name | Description |
|---|---|
 Medium1 | Medium model |
| Medium2 | Medium model |
Revisions
-
May 13, 2021, by Michael Wetter:
Changed boundary condition model to prescribed pressure rather than prescribed mass flow rate. Prescribing the mass flow rate caused unreasonably large pressure drop because the mass flow rate was forced through a closed valve.
This is for #2488. -
July 10, 2017, by Yangyang Fu:
First implementation.