blockZoneGroupSystem
Compute the AHU operating mode from the group operating mode
Information
This sequence specifies the operation mode of a AHU system, which may serve multiple zone group. It is implemented according to Section 5.15.1 of ASHRAE Guideline G36, May 2020.
When zone group served by an air-handling system are in different modes, the following hierarchy applies (highest one sets AHU mode):
- Occupied mode
- Cooldown mode
- Setup mode
- Warm-up mode
- Setback mode
- Freeze protection setback mode
- Unoccupied mode
See the operation mode enumeration in Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes for the detailed description.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nGro | Total number of groups |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.CDL.Interfaces.IntegerInput[nGro] | uOpeMod | Groups operation mode | |
| Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput | yAhuOpeMod | Operation mode for AHU operation |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.CDL.Conversions.IntegerToReal[nGro] | intToRea | Convert integer to real | |
| Buildings.Controls.OBC.CDL.Reals.MultiMin | mulMin | Find the highest priotity operating mode | |
| Buildings.Controls.OBC.CDL.Conversions.RealToInteger | ahuMod | Air handling operating mode |
Revisions
-
August 22, 2022, by Jianjun Hu:
First implementation.