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<p>I don't think Bruce's comment is germaine to the problem posed by
Menush, since Menush is asking about infiltration and not heat
transfer through interior walls. As far as I know from DOE-2
(always have to add that caveat because I don't work much in
eQUEST), infiltration rates are normalized per floor area, rather
than external wall area, mainly because that's how the
infiltration models have been developed, i.e., effective leakage
areas have always been defined as per floor area. If you don't
think that's right, you can always adjust the input values by the
ratio of the external wall area to the floor area, as you've
described, but then you're on your own in coming up with the
correlation, <br>
</p>
<p>Joe<br>
</p>
<pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-freetext" href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<div class="moz-cite-prefix">On 3/1/2018 6:44 PM, Bruce Easterbrook
via Equest-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5669491f-8e14-0dce-e943-4b7f2f5dfa09@bellnet.ca">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Hi Menush,<br>
I don't think you have the same thing. eQuest will treat 2 shells
butted to each other differently than a single interior wall
separating 2 zones in a shell. It treats the 2 butted walls as
exterior walls with a tiny space between. They are the same wall
in your thinking but they are not. You can delete one of them and
make the remaining wall an interior wall and assign the proper
butting spaces on each side of the wall as sharing the wall and
transferring heating and cooling through the wall. Or you can add
an interior wall to the original space and separate it into 2
zones. As you have noticed there is a difference in the way
eQuest treats your 2 solutions. It is particular. Now you need
to pick the configuration that matches what you are trying to
model in such a way that eQuest does/treats the wall in the way
you want it to work.<br>
Bruce Easterbrook P.Eng.<br>
Abode Engineering<br>
<br>
<div class="moz-cite-prefix">On 3/1/2018 5:23 PM, Menush Akbari
via Equest-users wrote:<br>
</div>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m having an issue with infiltration and
wondering if anyone else has noticed this. When I’m in
wizard mode, I build a very simple rectangular shell and I
change the infiltration rate for perimeter zones to
0.05cfm/ft2. I leave the core zone infiltration rate to the
eQuest default value (0.001cfm/ft2). From my understanding,
the perimeter zone entered value in wizard mode is based on
exterior gross wall area. When I move on to detail mode,
eQuest changes the value to an infiltration value per floor
area instead of exterior wall area. The values so far make
sense and I can do the math and get the same numbers eQuest
calculates in detail mode. No problems here.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The problem however happens when I create
different shells. For example, let’s say I have the same
rectangular building as mentioned above, but I split this up
into two different shells next to each other (two square
shells), therefore one of the walls of each square shell is
an interior wall, which means I should not see an
infiltration of 0.05 cfm/ft2 of the gross wall area. However
when I finish building these two shells in detail mode
(which would be identical to one rectangular shell), the
infiltration value is not accurate anymore. Instead of the
same numbers as my first model (one rectangular shell), the
second model calculates an exterior wall infiltration value
for the interior walls that are budded up against each
other.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Has anyone come across this? Is this a
quirk with eQuest and just needs to be changed manually in
detail mode, or am I doing something wrong here?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for the help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span
style="font-family:"Corbel",sans-serif;color:black;mso-fareast-language:EN-CA"
lang="EN-CA">Menush Akbari<o:p></o:p></span></b></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Corbel",sans-serif;color:black;mso-fareast-language:EN-CA"
lang="EN-CA">BEng, PEng, BEMP, CMVP<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Corbel",sans-serif;color:black;mso-fareast-language:EN-CA"
lang="EN-CA">Senior Energy Engineer<o:p></o:p></span></p>
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<p class="MsoNormal"><i><span
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