Update FT for space-level infiltration/ventilation objects

[shorowit]

Enhancement Request

EnergyPlus 22.2 will support space-level infiltration and ventilation. Since it did not previously support it, OpenStudio had to go through hoops to combine multiple space objects into a single zone object for EnergyPlus. Now there should be a 1:1 map and the code should be simpler. This will also help prevent bugs (like this one).

This is an important feature for us because we want to use output variables for individual space-level infiltration objects in the same thermal zone. That is not possible unless the EnergyPlus model maintains the individual space-level infiltration objects that we've defined in OpenStudio.

[tijcolem]

@joseph-robertson Let's prioritize the E+ 22.2.0 IO Freeze first and then if we have time we can slot this in.

[shorowit]

In hindsight, I realize that we don't actually need this capability after all. I was confusing this with something else. So it's probably still worth doing, but it's not a priority from our point of view.

[shorowit]

Apparently this may be a high priority for us again, but for a different reason. Mike Witte found that the E+ models we produce generate an error in E+ 22.2 because we try to (EMS) actuate a zone-level infiltration object (since that's all OS will produce), but when that zone has multiple spaces, E+ automatically converts the zone-level infiltration object into individual space-level infiltration objects. It does the same thing for equipment, lights, etc. It's possible there is a way to workaround this, but everything would be simpler, cleaner, and more consistent if OpenStudio translated objects 1:1.

[jmarrec]

We have SpaceInfiltration (so Space), but ZoneVentilationDesignFlowRate (so ThermalZone) in OS. For SpaceInfiltration, no problem.

But for the ZV:DesignFlowRate, do you want to have that map to a Space in the end? It'd be pretty weird to me. Unless we allow the OS:ZoneVentilation:DesignFlowRate to also connect to a Space... but that's not as light of a change

[jmarrec]

I'm glad this is going to go: https://github.com/NREL/OpenStudio/blob/ce3ee507dd721e80fc4470a0d6bc48157d637f12/src/energyplus/ForwardTranslator.cpp#L319-L364