Dear Luke,
Thinking about this, it is common for a WSHP to serve more than one room, but uncommon for there to be more than one thermostat (i.e. multi-zone). These devices are pretty much a one zone component.
That said, you can only do what the software allows or for which there is a reasonable work-around. When you think of it, a reasonably designed system will normally include zones with similar occupancy, schedule, set points, etc. If that’s true, just assign one heat pump per zone, using the same COP, fan performance, etc. as for a larger multi-zone heat pump. If it’s not true, one WSHP per zone is still the best available solution, since E+ does not have a multi-zone WSHP object (as you already note).
The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of luke_dorna
Sent: Monday, January 23, 2012 3:05 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Multiple Zones for Single Heat Pump
I am currently using the the AirLoopHVAC:UnitaryHeatPump:WaterToAir object to model distributed heat pumps throughout a building. Unfortunately, the object only allows for a single controlling thermostat, but the design calls for heat pumps that serve multiple rooms.
Has anyone encountered/found a way around this?
I've tried attaching reheat VAVs to the different zones but didn't have much luck.
Thanks,
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