HVAC tab in model data
When using Compact HVAC you can control humidity in zones by including separate humidification and/or dehumidification equipment and controls. Both humidification and dehumidification require settings at building level for AHU-based or at zone level for Single zone unitary systems (of course in the latter case defaults can be set at building level).
To include humidification check the Humidification checkbox and make further settings. The humidifier is electric powered and the data required is: availability schedule, rated capacity and water supply rate. The humidification setpoint is defined on the Activity tab.
For AHU-based systems you must also define the humidification control zone.
Select the schedule that defines the availability of humidification. The schedule values denote whether the humidifier can run during a given time period. A schedule value of 1.0 indicates that the humidifier can be on during a given time period. A value of zero denotes that the humidifier cannot be used during that time period.
Enter the rated moisture output rate in m3/s or CFM. The humidifier does not currently autosize, so the default is very large to allow for adequate capacity. The default is 0.000001 m3/s.
To include dehumidification check the Dehumidification checkbox and make further settings. The dehumidification setpoint is defined on the Activity tab.
For AHU-based systems you must also define the humidification control zone.
For unitary systems, there are two dehumidification control type options available:
For VAV and CAV only one option is available:
Important Notes: