It's been my experience that there's often a zone or space within a zone that either requires DCV in the baseline model per 90.1 or is part of the design in the proposed model (usually conference rooms). Unfortunately in OpenStudio, and as far as I can tell EnergyPlus, DCV can only be enabled at the system level - i.e. AirLoopHVAC. There are workarounds one could do such as post processing or separating the zone into its own air loop, but I'd like to know if there's an EP object for this that I'm not aware of - e.g. one to connect air loops.

I'm wondering if EP is able to model demand controlled ventilation below the system level - i.e. AirLoopHVAC? It's been my experience that there's often a zone or space within a zone that either requires DCV in the baseline model per 90.1 or is part of the design in the proposed model (usually conference rooms). Unfortunately So far this hasn't been a major issue as the proportion of DCV space is small in OpenStudio, and as far as I can tell EnergyPlus, DCV can only be enabled at comparison to the system level - i.e. AirLoopHVAC. There total assigned to a system.

Of course there are workarounds one that could do be done such as post processing the results or separating the zone into its own air loop, but I'd like to know if there's an it's possible in EP object for this that I'm and if not aware of - e.g. one to connect air loops.what some other workarounds are. Thanks...

I'm wondering if EP is able to model demand controlled ventilation below the system level - i.e. AirLoopHVAC? It's been my experience that there's often a zone or space within a zone that either requires DCV in the baseline model per 90.1 or is part of the design in the proposed model (usually conference rooms). So far this hasn't been a major issue as the proportion of DCV space is small in comparison to the total assigned to a system.

Of course there are workarounds that could be done such as post processing the results or separating the zone into its own air loop, but I'd like to know if it's possible in EP and if not what some other workarounds are. Thanks...