blockActiveAirFlow
Output the active primary airflow setpoint for constant-volume series fan-powered terminal unit
Information
This sequence sets the active primary cooling maximum and minimum setpoints for series fan-powered terminal unit with constant volume fan. The implementation is according to the Section 5.9.4 of ASHRAE Guideline 36, May 2020.
The setpoints shall vary depending on the mode of the zone group.
| Setpoint | Occupied | Cooldown | Setup | Warm-up | Setback | Unoccupied |
|---|---|---|---|---|---|---|
Cooling maximum (VActCooMax_flow) | VCooMax_flow |
VCooMax_flow | VCooMax_flow |
0 | 0 | 0 |
Minimum (VActMin_flow) | VOccMin_flow | 0 | 0 | 0 | 0 | 0 |
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | VCooMax_flow | Design zone cooling maximum airflow rate |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.CDL.Interfaces.IntegerInput | uOpeMod | Zone operation mode | |
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | VOccMin_flow | Occupied minimum airflow setpoint | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | VActCooMax_flow | Active cooling maximum airflow setpoint | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | VActMin_flow | Active minimum airflow setpoint |
Revisions
-
August 1, 2020, by Jianjun Hu:
First implementation.