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<DIV>I typically follow this same methodology, but put the DOAS in the <STRONG>unconditioned</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.</DIV>
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<DIV>Matthew Higgins, Associate<BR>LEED AP + ASHRAE-HBDP</DIV>
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<DIV>Environmental Dynamics, Inc.<BR>Architecture and Sustainability Consulting Services<BR>505.242.2851 x.103<BR>web. edi-arch.com</DIV>
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<DIV>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.</DIV><BR><BR>>>> "Bouchard, Jordan" <Jordan.Bouchard@stantec.com> 12/4/2009 6:02 AM >>><BR></DIV>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Hello,<o:p></o:p></SPAN></FONT></P>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">I want to poll the group to make sure I haven’t missed a thread on the subject. <o:p></o:p></SPAN></FONT></P>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">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></FONT></P>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">From what I understand, heat recovery is not available for these systems either.<o:p></o:p></SPAN></FONT></P>
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<P class=MsoNormal><FONT size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Thanks for you help,<o:p></o:p></SPAN></FONT></P>
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<P class=MsoNormal><B><FONT size=1 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold">Jordan Bouchard, LEED® AP</SPAN></FONT></B><FONT size=1 face=Arial><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt"><BR>Mechanical Engineer In Training<BR>Stantec Consulting Ltd.<BR><FONT color=gray><SPAN style="COLOR: gray">Ph: (416) 596-6686<BR>Fx: (416) 596-6680<BR>Jordan.Bouchard@stantec.com </SPAN></FONT><o:p></o:p></SPAN></FONT></P>
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