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<DIV>Thank you, Bill. That’s good advice.</DIV>
<DIV> </DIV>
<DIV>I’ll try to post results when it’s done.</DIV>
<DIV> </DIV>
<DIV>Best to you,</DIV>
<DIV> </DIV>
<DIV>Dave</DIV>
<DIV> </DIV>
<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">David R.
Weigel, PE<BR>Member / President<BR>The Watt Doctors, LLC<BR>1189 Golden Circle
SW<BR>Lilburn, GA 30047-1913<BR>678-353-6394 office<BR>901-619-1716
cell<BR></DIV>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=bbishop@pathfinder-ea.com
href="mailto:bbishop@pathfinder-ea.com">Bishop, Bill</A> </DIV>
<DIV><B>Sent:</B> Thursday, March 29, 2012 9:53 AM</DIV>
<DIV><B>To:</B> <A title=dave.weigel@thewattdoctors.com
href="mailto:dave.weigel@thewattdoctors.com">Dave Weigel</A> ; <A
title=equest-users@lists.onebuilding.org
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A>
</DIV>
<DIV><B>Subject:</B> RE: [Equest-users] Modeling interstitial
spaces</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">David,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Your
sketch shows that the interstitial spaces contain uninsulated return ductwork.
Without knowing more about the design, I’d be tempted to model the interstitial
spaces as unconditioned plenums. This is easy to do in eQUEST. The spaces would
not be counted as conditioned floor area in the DOE-2 reports and I don’t see
any LEED concerns. Check the definitions in ASHRAE 90.1 for <I>space,
conditioned space, semiheated space</I> and <I>unconditioned space</I>, and
reference Table 3.1, to confirm that the interstitial spaces meet the definition
of <I>unconditioned</I>. LEED reviewers are familiar with these definitions and
will refer to them if they question your modeling assumptions for the
interstitial spaces.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Best
regards,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Bill<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<DIV>
<P class=MsoNormal><A href="mailto:wbishop@pathfinder-ea.com"><B><SPAN
style="FONT-FAMILY: 'Franklin Gothic Medium','sans-serif'; COLOR: black; FONT-SIZE: 10pt; TEXT-DECORATION: none"><IMG
id=Picture_x0020_1 border=0
src="cid:3DCF976A336B421884AF912996BAA6CF@DaveHPDesktop" width=481
height=118></SPAN></B></A><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P></DIV>
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Dave
Weigel<BR><B>Sent:</B> Thursday, March 29, 2012 9:12 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] Modeling
interstitial spaces<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p></o:p> </P>
<DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Hello
group,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">I’m unsure how to deal
with interstitial spaces between floors (see sketch attached) that are only
indirectly heated and cooled. This is for a LEED project, so I have to document
how I account for the energy in eQuest. The spaces are not occupied, and
should not count toward building area gross square feet. Simply treating the
spaces as unconditioned on one side of a horizontal partition won’t be very
accurate. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">I have considered
modeling the interstitial spaces separately, exporting the hourly loads and
temperature profiles, and creating some sort of internal load to represent them
– but that sounds like a long way around to get where I’m
going.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Does anyone have a
hint for me?<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Thanks!<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">David R. Weigel,
PE<BR>Member / President<BR>The Watt Doctors, LLC<BR>1189 Golden Circle
SW<BR>Lilburn, GA 30047-1913<BR>678-353-6394 office<BR>901-619-1716
cell<o:p></o:p></SPAN></P></DIV></DIV></DIV></DIV></DIV></DIV></DIV></BODY></HTML>