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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To the best of my knowledge, the point of creating a “dummy zone”
is the same reason you wouldn’t want to use an plenum zone – you want to avoid
both internal loads and adjacent space loads from affecting the behavior of the
DOAS. Perhaps more pertinently, you might not want the thermal effects of your
ventilation air, all passing through this plenum, to affect the adjoining
spaces drastically.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The dummy zone is just as Jordan described – a conduit (“necessary
evil?”) for attaching a second system to the zone through “OA-FROM-SYSTEM.” Creating
an actual “dummy zone” if nothing else, is a manner of helping to keep
everything straight within a complicated model. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'><img width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CA771F.05EC3C60" alt="cid:489575314@22072009-0ABB"></span><b><span
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<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER</span><span style='font-size:7.5pt;color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
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color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
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color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Check out our new web-site @ </span></i><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><span
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Mathew
Higgins<br>
<b>Sent:</b> Saturday, December 05, 2009 1:42 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org; Jordan Bouchard<br>
<b>Subject:</b> Re: [Equest-users] Modelling DOAS/MUA in eQUEST<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I
typically follow this same methodology, but put the DOAS in the <strong><span
style='font-family:"Tahoma","sans-serif"'>unconditioned</span></strong>
"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.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Matthew
Higgins, Associate<br>
LEED AP + ASHRAE-HBDP<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Environmental
Dynamics, Inc.<br>
Architecture and Sustainability Consulting Services<br>
505.242.2851 x.103<br>
web. edi-arch.com<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Any
data provided by the Consultant, verbal or written, are to be considered
opinions of building energy and/or daylight performance. The Client understands
that the Consultant has no control of occupant habits, equipment or material
performance or characteristics, site or climate conditions or the Contractor's
method of assembly, and that the Consultant's opinions regarding building
energy/daylight performance are made on the basis of the Consultant's
professional judgment and experience. The Consultant makes no warranty, express
or implied, that the energy/daylight performance of the building will not vary
from the Consultant's opinion of building energy/daylight performance.<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br>
<br>
>>> "Bouchard, Jordan" <Jordan.Bouchard@stantec.com>
12/4/2009 6:02 AM >>><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
want to poll the group to make sure I haven’t missed a thread on the subject. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>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.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>From
what I understand, heat recovery is not available for these systems either.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks
for you help,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Jordan
Bouchard, LEED® AP</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'><br>
Mechanical Engineer In Training<br>
Stantec Consulting Ltd.<br>
<span style='color:gray'>Ph: (416) 596-6686<br>
Fx: (416) 596-6680<br>
Jordan.Bouchard@stantec.com </span><o:p></o:p></span></p>
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none'>stantec</span></b><span style='color:#003F6E;text-decoration:none'>.com</span></a>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
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