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<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>Hello Kendra,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>The following is a link to a blog
I've started with the intent to eventually collect all the arcane but useful
scraps information necessary to do these energy analyses
efficiently:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2><A
href="http://elcca-exchange.blogspot.com/2006/08/equest-displacement-ventilation.html">http://elcca-exchange.blogspot.com/2006/08/equest-displacement-ventilation.html</A></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>There's link within this to an Energy
Designed Resources paper that I used (Which another kind user in turn had
pointed me to) to set up my prototype displacement ventilation
system. While doing so I also found the screenshot in eQuest 3.6 that
shows the 'lighting heat to return air or adjacent space' (i.e. plenum) option
that the EDR paper does not mention. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>Assigning the stratified heat
fraction using this screen may prove useful in solving your problem... but I
can't state that definitively has I haven't had the chance to really test
it out. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>If this does indeed solve your
problem and you have a moment, please let me know... I'll be getting back the
simulation business soon enough.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2>Brandon</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=208491023-18092006><FONT
face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@GARD.COM
[mailto:BLDG-SIM@GARD.COM] <B>On Behalf Of </B>Tupper, Kendra<BR><B>Sent:</B>
Monday, September 18, 2006 3:26 PM<BR><B>To:</B> BLDG-SIM@GARD.COM<BR><B>Cc:</B>
kevinjm5000@yahoo.com<BR><B>Subject:</B> [BLDG-SIM] : eQuest Underfloor
Air<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I’m trying to use eQuest to compare
an Underfloor Air System and conventional VAV system. I have modeled the
Underfloor case according to the Addison/Nall paper, and am having some issues
with the return air temperatures. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have modeled two stratified zones
(a lower occupied 5’ zone, and an upper 8’ plenum space). A portion of the
internal gains and window conduction is modeled in the plenum space, and the
return air path is set to PLENUM. I expected a portion of the cooling
loads to be transferred to the return air, raising the return air temperatures,
and allowed the loads in the occupied zone to be met with a higher supply air
temp (SAT).<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">However, when I increase my SAT for
the underfloor case, my cfm and fan energy increases accordingly. I output
hourly return air temps for the two cases and found that they were the same –
adding heat gains to the plenum space did not increase the return air temps.
Further, I adjusted my heating and cooling setpoints for the zones, and
found that the return air temps are equal to these zonal setpoints, regardless
of what load is imposed on the plenum spaces.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Has anyone experienced this
problem? <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks!<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Kendra<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P><B><FONT face=Arial color=#333333 size=3><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; COLOR: #333333; FONT-FAMILY: Arial">Kendra
Tupper</SPAN></FONT></B> <BR><I><FONT face=Arial color=gray><SPAN
style="COLOR: gray; FONT-STYLE: italic; FONT-FAMILY: Arial">LEED®
AP</SPAN></FONT></I><B><SPAN
style="FONT-WEIGHT: bold"> </SPAN></B>
<BR><B><SUP><FONT face="Arial Bold"
color=#333333><SPAN
style="FONT-WEIGHT: bold; COLOR: #333333; FONT-FAMILY: 'Arial Bold'"> FLACK</SPAN></FONT>
</SUP></B><B><SUP><FONT face="Arial Bold" color=#999999><SPAN
style="FONT-WEIGHT: bold; COLOR: #999999; FONT-FAMILY: 'Arial Bold'">+</SPAN></FONT>
</SUP></B><B><SUP><FONT face="Arial Bold" color=#333333><SPAN
style="FONT-WEIGHT: bold; COLOR: #333333; FONT-FAMILY: 'Arial Bold'">KURTZ</SPAN></FONT></SUP></B> <B><SUB><SPAN
style="FONT-WEIGHT: bold"> </SPAN></SUB></B><BR><FONT face=Arial color=#333333
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">405
Howard Street </SPAN></FONT>
<FONT face=Arial color=#333333
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">415.398.3833</SPAN></FONT><B><SPAN
style="FONT-WEIGHT: bold"> </SPAN></B><B><FONT face=Arial color=#333333
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Main</SPAN></FONT></B>
<BR><FONT face=Arial color=#333333 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Suite
500 </SPAN></FONT>
<FONT face=Arial color=#333333
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">415.402.5840</SPAN></FONT><B><SPAN
style="FONT-WEIGHT: bold"> </SPAN></B><B><FONT face=Arial color=#333333
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Direct</SPAN></FONT></B>
<BR><FONT face=Arial color=#333333 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">San Francisco, CA
94105</SPAN></FONT> <FONT face=Arial
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style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">415.433.5311</SPAN></FONT><B><SPAN
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size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Fax</SPAN></FONT></B>
<BR><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A
href="http://www.flackandkurtz.com">http://www.flackandkurtz.com</A> <U>
</U></SPAN></FONT><A href="mailto:kendra.tupper@sf.fk.com"><FONT face=Arial
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">kendra.tupper@sf.fk.com</SPAN></FONT></A>
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