modelStagingPlant
Validation of plant staging block
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This is a validation model for the plant staging logic implemented in Buildings.DHC.Plants.Combined.Controls.BaseClasses.StagingPlant.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | PLRStaTra | 0.85 | Part load ratio triggering stage transition |
| CHW loop and cooling-only chillers | |||
| Integer | nChi | 2 | Number of units operating at design conditions |
| Real | QChiWatChi_flow_nominal | -4.4E6 | Cooling design heat flow rate of cooling-only chillers (all units) |
| Real | mChiWat_flow_nominal | abs(QChiWatChi_flow_nominal + QChiWatCasCoo_flow_nominal)/Buildings.Utilities.Psychrometrics.Constants.cpWatLiq/5 | CHW design mass flow rate |
| HW loop and heat recovery chillers | |||
| Integer | nChiHea | 3 | Number of units operating at design conditions |
| Real | QChiWatCasCoo_flow_nominal | -6E6 | Cooling design heat flow rate of HRC in cascading cooling mode (all units) |
| Real | QHeaWat_flow_nominal | 6.4E6 | Heating design heat flow rate (all units) |
| Real | mHeaWat_flow_nominal | QHeaWat_flow_nominal/Buildings.Utilities.Psychrometrics.Constants.cpWatLiq/10 | HW design mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.DHC.Plants.Combined.Controls.BaseClasses.StagingPlant | staChi | Chiller staging block | |
| Buildings.Controls.OBC.CDL.Reals.Sources.TimeTable | ratFlo | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | TChiWatSupSet | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | TChiWatPriRet | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | THeaWatSupSet | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | THeaWatPriRet | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.MultiplyByParameter | sca | Scale signal | |
| Buildings.Controls.OBC.CDL.Reals.MultiplyByParameter | sca1 | Scale signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | dpSet | Source signal | |
| Buildings.Controls.OBC.CDL.Reals.Sources.CivilTime | civTim | Model time | |
| Buildings.Controls.OBC.CDL.Reals.GreaterThreshold | greThr | Enable |
Revisions
-
February 24, 2023, by Antoine Gautier:
First implementation.