<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Lars:<br><br>This is VERY hard for me to visualize.<br><br>But realize you can only define walls between spaces in ONE space, not both.<br><br>It would be helpful to see the .PD2 and the .INP files.<br><br>John Aulbach<br><br>--- On <b>Wed, 9/2/09, Lars Fetzek <i><lfetzek@phoenixeng.us></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Lars Fetzek <lfetzek@phoenixeng.us><br>Subject: [Equest-users] Conduction to adjacent space<br>To: equest-users@lists.onebuilding.org<br>Date: Wednesday, September 2, 2009, 12:44 PM<br><br><div id="yiv694001982">
<div><font size="2" face="Arial"><span class="635362319-02092009">eQuesters,</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009"></span></font> </div>
<div><font size="2" face="Arial"><span class="635362319-02092009">
The geometry of my project is pretty complicated (and architecturally
ever-changing), so I'm looking for an easy-way-out regarding a small wall
bordering two spaces (thermal zones), one of which is much larger than the
other. (Unfortunately, the two zones in question have different
temperatures, so an adiabatic wall is not a good
simplification.)</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">
Suppose that I do the following: Cover the entire border of the large
space with an adiabatic wall, which I will define as "external", but
give the smallest U-value that eQuest will accept. (The portions
of this wall not bordering the small space actually border other spaces that are
at the same temperature as the large space, thereby justifying this adiabatic
assumption.) Then, define an internal wall in the smaller space that is
"next-to" the larger space and has an appropriate realistic
construction.</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">
My questions are these:</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">1.
The resulting total wall area of the larger space exceeds that of physical
reality. However, the amount of heat-conducting area is correct.
Does this somehow mess up eQuest's calculations?</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">2.
Is this going to be a problem for the LEED evaluation
people?</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">3.
I admit that this shortcut causes the effect of the specific heat of the
artificially adiabatic walls to be ignored. Realistically, does this
matter for an office building with metal studs and gypsum drywall - especially
when my model ignores the specific heats of the various unknown office
furniture, etc.?</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009"></span></font> </div>
<div><font size="2" face="Arial"><span class="635362319-02092009">
Thank you in advance for any thoughts.</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">
Thanks also to the several of you who have helped me with your replies to
previous questions. (It is appreciated!)</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009"></span></font> </div>
<div><font size="2" face="Arial"><span class="635362319-02092009">Lars Fetzek,
EI</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">Phoenix Engineering
Group</span></font></div>
<div><font size="2" face="Arial"><span class="635362319-02092009">Tampa,
Florida</span></font></div></div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a ymailto="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG" href="/mc/compose?to=EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><br></div></blockquote></td></tr></table><br>