[EnergyPlus_Support] Supply and Return Plenums, Splitters and Mixers

[Karen Walkerman <kwalkerman@xxxxxxxxx>]

I am trying to figure out how supply and return plenums can be used in EnergyPlus, especially in conjunction with ZoneSplitters and ZoneMixers.

The example file "5ZoneSupRetPlenRAB.idf" uses a supply plenum.  There is only one plenum outlet node, and the plenum outlet node is the inlet node for a ZoneSplitter.  The example file "5ZoneSupRetPlenVSATU.idf" is a similar file, but there is no ZoneSplitter.  The SupplyPlenum is the only object appearing on the AirLoopHVAC:SupplyPath list.

What combinations of plenums and zone splitters/mixers are allowed?  I'm not trying to simulate anything specific at the moment, just trying to establish some general rules.

I'm attaching an image that shows an airloop with three different distribution types:

1.  Zone Splitter and Zone Mixer

2.  Supply and Return Plenums

3.  Supply Plenum serving ZoneSplitter, return through a Zone Mixer and Return Plenum.

For this image, the AirLoopHVAC:SupplyPath object would look something like this:

AirLoopHVAC:SupplyPath,

AirLoop 1 Supply Path,

AirLoop 1 Supply Path Inlet Node,

AirLoopHVAC:ZoneSplitter,

Zone Splitter 1,

AirLoopHVAC:SupplyPlenum,

Supply Plenum 1,

AirLoopHVAC:SupplyPlenum,

Supply Plenum 2,

AirLoopHVAC:ZoneSplitter,

Supply Plenum 2 Zone Splitter;

Is this allowed?

Thanks,

--

Karen

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