modelModulation_TSup
Validation model for multi zone VAV AHU outdoor and return air damper position modulation sequence
Information
This example validates
Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulation
for a varying supply air temperature control loop signal.
The instance mod is in normal operation, whereas
for the instance modFre, the damper limits are
as if the mixed air temperature were below its freezing set point.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulation | mod | Economizer modulation sequence | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Ramp | uTSup | Control signal for supply air temperature loop | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | outDamPosMin | Outdoor air damper minimum position | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | outDamPosMax | Outdoor air damper maximum position | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | retDamPosMin | Return air damper minimum position | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | retDamPosMax | Return air damper maximum position | |
| Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulation | modFre | Economizer modulation sequence if the dampers positions prevent freezing at the mixed air | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | outDamPosMaxFre | Outdoor damper if freeze protection is on | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | retDamPosMinFre | Return damper position if freeze protection is on |
Revisions
-
October 13, 2017, by Michael Wetter:
Added additional instance to validate the behavior when dampers are such positioned that they prevent the mixed air temperature from being below the freezing set point. -
June 30, 2017, by Milica Grahovac:
First implementation.