[Equest-users] Modelling DOAS/MUA in eQUEST

Mathew Higgins Higgins at edi-arch.com
Sat Dec 5 11:42:28 PST 2009

I typically follow this same methodology, but put the DOAS in the
unconditioned "plenum" space where it's actually going to be
installed. Don't know if there is a word of caution from anyone when
doing this, but that way I don't have to go through the dummy zone
process. I typically input a "self-contained" ERV on these respective
units to simulate energy recovery as well.
Matthew Higgins, Associate
Environmental Dynamics, Inc.
Architecture and Sustainability Consulting Services
505.242.2851 x.103
web. edi-arch.com
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>>> "Bouchard, Jordan" <Jordan.Bouchard at stantec.com> 12/4/2009 6:02 AM

I want to poll the group to make sure I haven’t missed a thread on the
Is the only way to model a system that separates the ventilation
requirements and the space load (Heatpump, VRF, Fan coil, etc) by
creating a dummy shell with zero loads and then passing the OA from this
dummy shell to the individual zones with “OA-FROM-SYSTEM”? My specific
system this time is a GSHP with a RTU for ventilation air that is fired
by a condensing boiler.
>From what I understand, heat recovery is not available for these
systems either.
Thanks for you help,
Jordan Bouchard, LEED® AP
Mechanical Engineer In Training
Stantec Consulting Ltd.
Ph: (416) 596-6686
Fx: (416) 596-6680
Jordan.Bouchard at stantec.com 
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