Labs usually require high OA/total air change rate, however, in the energy model attached the airflow is not follow specified air flow rate.
In this 4-zone lab building, I created 3 simple lab zones and one mechanical room. The minimum OA and minimum air flow for labs are 6 ACH according to the design (100% OA).
I had entered 6 ACH in Sizing:Zone
- Cooling Minimum Air Flow
(converted to m3/s) and DesignSpecification:OutdoorAir
objects, and followed this post, I assigned DesignSpecification:OutdoorAir
objects to AirTerminal:SingleDuct:VAV:Reheat
, in order to enable OA-controlled ventilation.
The actual simulated ventilation rate hardly rises above 4 ACH. Is there anything else I had missed to specify the min air flow? Could you please share your strategies to mandate the minimum air flow in EnergyPlus model for an air-flow-driven space, such as Labs?
Below are the zone areas and volumes in the format of Zone ID---area(m2)---volume(m3)
- AGL1-DRKMM-001---174---743
- AGL1-LABOR-003---223---951
- AGL1-LCORR-002---140---595
- AGL1-MECHE-004---58---248
The E+ Model: 4zoneLab.idf