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<p class=MsoNormal><span style='color:#1F497D'>I’ve done exactly that in
the past for the exactly the same purpose!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The only difference is I believe
I always punch in the differences in the metric of ACH. ASHRAE fundamentals
provides some guidance regarding air change rates to expect for various classes
of construction as a function of outdoor design temperature, and that was the
best I could base my existing construction off of from what info I had available.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Come up with a “leakiness”
for both you construction, old and new windows, and do the weighted average jig
=).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Kudos on your fancy facade
spelling also ;)! <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Alex
Krickx<br>
<b>Sent:</b> Monday, March 08, 2010 6:05 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Modeling Infiltration and Windows<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am interested in modeling the energy savings that occurs
when windows are replaced with lower-infiltration alternatives. In the wizard
mode, the only place that I see infiltration is under the “Building
Envelope Constructions” Screen. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m hoping someone can confirm my methodology:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Can I input a weighted average of window and wall air
infiltration here? If I’m looking at a building with 20% Window to
Wall Ratio, and the windows have 0.1 CFM/ft² while the walls have 0.04
CFM/ft²can I apply an area weighted average into this box? I would take
(20%*0.1+80%*0.04) as the <i>façade </i>infiltration value.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>That way I could use the same formula to determine the area
weighted infiltration of the façade if better windows were installed.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>How do other people model this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance!<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Alex Krickx<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:#262F13'>Alex Krickx<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:gray'>Building Energy
Specialist<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:#1F497D'><img border=0
width=121 height=42 id="Picture_x0020_1"
src="cid:image003.jpg@01CABEEF.94CAF2B0" alt="email_sig"></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:9.0pt'>1250 Elko Dr, Sunnyvale, CA
94089<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt'>(t) 408.541.8124<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:gray'><o:p> </o:p></span></p>
<p class=MsoNormal><b><i><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>Warning:</span></i></b><i><span
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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