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<font size="-1"><font face="Arial">The phrase "</font></font><font
color="navy" face="Arial" size="2"><span style="font-size: 10pt;
font-family: Arial; color: navy;">air currents in cavity spaces
dependent on wall orientation"<font color="#000000"> suggests
higher conductivity!<br>
Though it'll be interesting to know more, perhaps changing
solar radiation on the facade with respect to time ?! . . . <br>
~Neeraj<br>
<br>
Neeraj Kapoor<br>
t: +91.99581.70018<br>
e: neeraj[at]kalpakrit[dot]com<br>
Kalpakrit Sustainable Environments Pvt. Ltd.<br>
New Delhi, India<br>
</font></span></font><br>
On 9/17/2010 10:49 AM, Carol Gardner wrote:
<blockquote
cite="mid:AANLkTik11mDDZrS7hPnsK28K7RXFjtvyhMALKTTb90Zh@mail.gmail.com"
type="cite">Dramatically higher or lower?<br>
<br>
<div class="gmail_quote">On Thu, Sep 16, 2010 at 9:35 PM, mark
dewsbury <span dir="ltr"><<a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:Mark.Dewsbury@utas.edu.au">Mark.Dewsbury@utas.edu.au</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div lang="EN-AU">
<div>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">Dear Kevin,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">I am sure this is going to be a
hot topic
very soon. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">In Australia, the ASHRAE &
other values
have been used for some years with regard to cavity
insulation values. This
includes subfloors, walls, roof spaces and spaces
between roofing and sarking. We
have conducted a few preliminary studies with
Engineering honours and Architecture
PhD students on actual buildings. They have all
shown dramatically different results
to what was previously accepted. In the case of
walls this has a dramatic
affect on the current practice of placing the
insulation on the outside of the
cavity. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">In terms of the roof model we
have
documented variations up to 20 deg C between DSP and
observed results. Subfloors
having variations but to a lessor magnitude. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">We are hoping for some future
moneys to go
back to the fundamentals of the physics models and
modify them to relate to
what is really occurring in buildings. We have
measured amazing horizontal and
vertical air currents in cavity spaces dependent on
wall orientation. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<div>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">Mark Dewsbury<br>
<br>
Centre for Sustainable Architecture with Wood<br>
School of Architecture<br>
University of Tasmania<br>
Locked Bag 1324<br>
Launceston 7250<br>
ph: 03 6324 4089<br>
mob: 0417 290 807<br>
fax: 03 6324 4088<br>
</span></font><font color="navy"><span style="color:
navy;">e: <a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:mark.dewsbury@utas.edu.au"
title="blocked::mailto:mark.dewsbury@utas.edu.au">mark.dewsbury@utas.edu.au</a></span></font></p>
</div>
<div>
<div class="MsoNormal" style="text-align: center;"
align="center"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US">
<hr align="center" width="100%" size="2">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;
font-weight: bold;" lang="EN-US">From:</span></font></b><font
face="Tahoma" size="2"><span style="font-size: 10pt;
font-family: Tahoma;" lang="EN-US">
Kevin Kyte [mailto:<a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:KKyte@watts-ae.com">KKyte@watts-ae.com</a>]
<br>
<b><span style="font-weight: bold;">Sent:</span></b>
Friday, 10 September 2010
1:47 AM<br>
<b><span style="font-weight: bold;">To:</span></b>
mark dewsbury<br>
<b><span style="font-weight: bold;">Subject:</span></b>
RE: [Bldg-sim] effective
R-value cavity insulation</span></font><span
lang="EN-US"></span></p>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri"
size="2"><span style="font-size: 11pt; font-family:
Calibri; color: rgb(31, 73, 125);" lang="EN-US">This
is what I
received.</span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri"
size="2"><span style="font-size: 11pt; font-family:
Calibri; color: rgb(31, 73, 125);" lang="EN-US"> </span></font></p>
<div>
<div style="border-width: 1pt medium medium;
border-style: solid none none; border-color: rgb(181,
196, 223); padding: 3pt 0mm 0mm;">
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;
font-weight: bold;" lang="EN-US">From:</span></font></b><font
face="Tahoma" size="2"><span style="font-size:
10pt; font-family: Tahoma;" lang="EN-US">
mark dewsbury [mailto:<a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:Mark.Dewsbury@utas.edu.au">Mark.Dewsbury@utas.edu.au</a>]
<br>
<b><span style="font-weight: bold;">Sent:</span></b>
Sunday, September 05, 2010
9:36 PM<br>
<b><span style="font-weight: bold;">To:</span></b>
Kevin Kyte<br>
<b><span style="font-weight: bold;">Subject:</span></b>
FW: [Bldg-sim] effective
R-value cavity insulation</span></font></p>
</div>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">Dear Kevin,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">Was there any feedback or
comment from
your question? </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">I have done some preliminary
studies with
engineering honours students and found dramatically
different results to the
theories. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;"> </span></font></p>
<div>
<p class="MsoNormal"><font color="navy" face="Arial"
size="2"><span style="font-size: 10pt; font-family:
Arial; color: navy;">Mark Dewsbury<br>
<br>
Centre for Sustainable Architecture with Wood<br>
School of Architecture<br>
University of Tasmania<br>
Locked Bag 1324<br>
Launceston 7250<br>
ph: 03 6324 4089<br>
mob: 0417 290 807<br>
fax: 03 6324 4088<br>
</span></font><font color="navy"><span style="color:
navy;">e: <a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:mark.dewsbury@utas.edu.au"
title="blocked::mailto:mark.dewsbury@utas.edu.au">mark.dewsbury@utas.edu.au</a></span></font></p>
</div>
<div>
<div class="MsoNormal" style="text-align: center;"
align="center"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US">
<hr align="center" width="100%" size="2">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;
font-weight: bold;" lang="EN-US">From:</span></font></b><font
face="Tahoma" size="2"><span style="font-size: 10pt;
font-family: Tahoma;" lang="EN-US">
Kevin Kyte [mailto:<a moz-do-not-send="true"
rel="nofollow" target="_blank"
href="mailto:KKyte@watts-ae.com">KKyte@watts-ae.com</a>]
<br>
<b><span style="font-weight: bold;">Sent:</span></b>
Sunday, 6 June 2010 2:13 AM<br>
<b><span style="font-weight: bold;">To:</span></b>
<a moz-do-not-send="true" rel="nofollow"
target="_blank"
href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
[Bldg-sim] effective
R-value cavity insulation</span></font><span
lang="EN-US"></span></p>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-US">I am curious what the relationship is
between cavity
depth, rated insulation, and effective insulation in
framed walls. I am
referencing the ASHRAE 90.1 doc because it is really
the only one I have on
this subject. I have charted Table A9.2B and a
logarithmic trendline
appears to be a good fit for extrapolating. If
anyone in academia,
industry, or the societies has more information on
this subject I would
certainly be grateful to receive a good lead. Thank
you.</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-US"> </span></font></p>
<p><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US">Kevin Kyte, </span></font><font
size="2"><span style="font-size: 10pt;" lang="EN-US">LEED</span></font><sup><font
face="Arial" size="2"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-US"> </span></font></sup><sup><font
size="2"><span style="font-size: 10pt;" lang="EN-US">®</span></font></sup><font
size="2"><span style="font-size: 10pt;" lang="EN-US">
AP</span></font></p>
<p class="MsoNormal"><b><font face="Times New Roman"
size="3"><span style="font-size: 12pt; font-weight:
bold;" lang="EN-US">Watts</span></font></b><b><span
style="font-weight: bold;" lang="EN-US">
Architecture & Engineering, P.C.</span></b></p>
<p class="MsoNormal"><font face="Shruti" size="2"><span
style="font-size: 10.5pt; font-family: Shruti;"
lang="EN-US">95 Perry Street, Suite 300</span></font><font
face="Shruti" size="2"><span style="font-size: 10.5pt;
font-family: Shruti;" lang="EN-US"></span></font></p>
<p class="MsoNormal"><font face="Shruti" size="2"><span
style="font-size: 10.5pt; font-family: Shruti;"
lang="EN-US">Buffalo</span></font><font
face="Shruti" size="2"><span style="font-size: 10.5pt;
font-family: Shruti;" lang="EN-US">, NY 14203</span></font><font
face="Shruti" size="2"><span style="font-size: 10.5pt;
font-family: Shruti;" lang="EN-US"></span></font></p>
<p class="MsoNormal"><font face="Shruti" size="2"><span
style="font-size: 10.5pt; font-family: Shruti;"
lang="EN-US">p: 716.206.5174</span></font></p>
<p class="MsoNormal"><font face="Shruti" size="2"><span
style="font-size: 10.5pt; font-family: Shruti;"
lang="EN-US">f.: 716.206.5199</span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="2"><span
style="font-size: 11pt;" lang="EN-US">e: <a
moz-do-not-send="true" rel="nofollow"
target="_blank" href="mailto:kkyte@watts-ae.com">kkyte@watts-ae.com</a></span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="2"><span
style="font-size: 11pt;" lang="EN-US"><a
moz-do-not-send="true" rel="nofollow"
target="_blank" href="http://www.watts-ae.com/">http://www.watts-ae.com</a></span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="2"><span
style="font-size: 11pt;" lang="EN-US"> </span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US"> </span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;" lang="EN-US"> </span></font></p>
</div>
</div>
<br>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Carol Gardner PE<br>
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