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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I am not a modeler, but I’ve worked a bit with the TRANE
Trace demo software a few years ago.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I’ve forgotten how to maneuver within it, so I was hoping
someone might comment on this question.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The software provided an air leakage rate for whatever wall
assembly is entered into the model.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I know from previous posts and responses that you do not change
the air leakage rate to account for any air barrier system that is to be
installed. I also know that if you do apply an air barrier leakage rate,
the model is very sensitive to it, and the model produces significant energy
savings because of it.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>And, it’s my understanding the R-value rating of the
insulation is used despite that the rating is based on more or less zero air
flow.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>So, I’m wondering if the models, seeing both zero-air-flow
insulation and un-moderated leakage rates, ignore one or the other or somehow
produce a modulated result that reflects reduced wall assembly R-value from air
leakage through it.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Paul
Grahovac, LEED AP<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Product
Manager <o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>R-GUARD
Air & Water-Resistive Barrier <o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>PROSOCO,
Inc.<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>3741
Greenway Circle<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Lawrence,
Kansas 66046<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>(785)
830-7355<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>(888)
376-3417 fax<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:pgrahovac@prosoco.com">pgrahovac@prosoco.com</a><o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>web
site <a href="http://www.prosoco.com/">http://www.prosoco.com/</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
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