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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">John Straube has a white paper floating out there specifically about the reduction of insulation R-value as a function of air circulation in cavities. I’d go
check out the BSC website (or RDH, which they’re a part of now) to see if it’s available (or email them to point you to that publication).<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">Michael Hsueh
</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">|
<b>Integral Group </b>| </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">T 510.663.2070 ext 2041 | D 510.457.0141</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F"><a href="http://www.integralgroup.com/"><span style="color:#7F7F7F">integralgroup.com</span></a> |</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#7F7F7F">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><a href="mailto:mhsueh@integralgroup.com" target="_blank"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">mhsueh@integralgroup.com</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Bldg-sim [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Keith Swartz<br>
<b>Sent:</b> Friday, March 04, 2016 1:16 PM<br>
<b>To:</b> Jones, Christopher <Christopher.r.Jones@wspgroup.com>; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Vented cavity behind brick or precast panels and effective R-value<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Christopher,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">The ASHRAE Handbook has a section about thermal resistance of air spaces. See the 2013 Fundamentals Handbook starting on p. 26.12. Is that what you are looking for?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Keith Swartz, PE
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray">|
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:10.0pt;line-height:110%;font-family:"Arial",sans-serif;color:black">Seventhwave</span></b><b><span style="font-size:10.0pt;line-height:110%;font-family:"Arial",sans-serif;color:gray"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:10.0pt;line-height:110%;font-family:"Arial",sans-serif;color:black">608.210.7123 seventhwave.org<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Jones, Christopher [<a href="mailto:Christopher.r.Jones@wspgroup.com">mailto:Christopher.r.Jones@wspgroup.com</a>]
<br>
<b>Sent:</b> Friday, March 04, 2016 12:52 PM<br>
<b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b>Subject:</b> [Bldg-sim] Vented cavity behind brick or precast panels and effective R-value<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Is anyone aware of any analyses of the effective insulation properties of brick or precast veneer with a vented air space? I assume the air in that cavity is moving
slowly but it isn’t completely still therefore you can’t include all of the insulative properties of those two layers on the outside of a wall?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1C467A">Christopher Jones,</span></b><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">
</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">P.Eng.<i>
<br>
</i></span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Senior Engineer<b><o:p></o:p></b></span></p>
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<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">WSP Canada Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Toronto, ON M4P 1E4</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#595959"><br>
</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">T +1 416-644-4226<o:p></o:p></span></p>
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