<div>I found this resource: <a href="http://www.builditsolar.com/Projects/SolarHomes/PasSolEnergyBk/Chapter03.pdf">http://www.builditsolar.com/Projects/SolarHomes/PasSolEnergyBk/Chapter03.pdf</a> (page 5) which lists all the material properties you need in order to model adobe in eQuest. Not sure about their agreement with the forthcoming ISO certification.<br>
</div><div><br></div><div>I have modeled high thermal mass buildings in eQuest with varying degrees of success. The thermal mass definitely had an impact on energy use, but when modeling buildings that had very high thermal mass, the program began to break down. In one model when I looked at hourly space temperature data, the space temperature was as expected for 99% of the hours, but there were some hours with negative temperatures.</div>
<div><br></div><div>I advise caution and that you conduct a thorough review of hourly results to make sure the material is having a logical impact.</div><div><br></div><div>--</div><div>Karen</div><br><div class="gmail_quote">
On Wed, May 16, 2012 at 10:19 AM, Nathan Kegel <span dir="ltr"><<a href="mailto:nathan.kegel@iesve.com" target="_blank">nathan.kegel@iesve.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="color:#1f497d">I had a conversation with one of the rammed earth wall manufacturers about this very topic a couple weeks ago. It seems that it’s taking quite a bit of time to get through the ISO certification process. Once that’s complete, there will be more widely published and certified data about these wall types available.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><div><table border="0" cellspacing="3" cellpadding="0" width="783" style="width:470.05pt"><thead><tr><td valign="top" style="padding:.75pt .75pt .75pt .75pt"><table border="0" cellspacing="4" cellpadding="0" width="783" style="width:470.05pt">
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</td><td width="384" valign="top" style="width:230.55pt;padding:.75pt .75pt .75pt .75pt;min-height:46.7pt"><p class="MsoNormal" style="line-height:115%"><b><span style="font-size:13.0pt;line-height:115%;font-family:"Arial","sans-serif";color:#006b6e">Nathan Kegel</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Arial","sans-serif";color:#006b6e"> <br>
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</div><p class="MsoNormal"><span style="color:#1f497d"> </span></p><div><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""> <a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Cole Hudson<br>
<b>Sent:</b> Wednesday, May 16, 2012 9:14 AM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] Adobe/Compressed Earth Construction?</span></p>
</div></div><div><div class="h5"><p class="MsoNormal"> </p><p class="MsoNormal"><span style="color:#1f497d">Yeah, I'm sorry. I didn't really phrase that question very well. I was hoping somebody might have some representative values for adobe bricks that I could plug in. I've been very surprised at how difficult this information is to track down. </span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">Another thing that I've always heard of adobe walls is that they absorb moisture during the night and then the walls will cool down as the moisture evaporates during the day. I don't think this is something that eQUEST models, and was wondering if this effect is even significant enough to worry about. </span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><div><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""> Dana Etherington <a href="mailto:[mailto:Dana.Etherington@crbusa.com]" target="_blank">[mailto:Dana.Etherington@crbusa.com]</a> <br>
<b>Sent:</b> Tuesday, May 15, 2012 7:26 AM<br><b>To:</b> Cole Hudson; <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> RE: Adobe/Compressed Earth Construction?</span></p>
</div></div><p class="MsoNormal"> </p><p class="MsoNormal"><span style="color:#1f497d">Cole, </span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">The performance of an adobe wall is more related to its thermal capacitance, or ability to store heat, not necessarily the R-Value… You should be able to model this in eQuest by creating a material and defining its thermal properties. I have never tried it myself though.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">The wall basically absorbs heat from the sun throughout the day and transfers some of that heat to the interior once the sun goes down. Good for climates with high temperatures during the day and cooler temperatures at night.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">Hope this helps.</span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">Dana</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#595959">Mr. Dana Etherington, E.I.T., LEED AP BD+C </span></b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#595959">| <b>CRB </b>| One Kendall Square Ste B2202 | Cambridge, MA 02139</span></p>
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<b>Sent:</b> Monday, May 14, 2012 7:27 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Adobe/Compressed Earth Construction?</span></p>
</div></div><p class="MsoNormal"> </p><p class="MsoNormal">I'm working on a small building in a coastal environment in South Texas. The Architect is contemplating adobe construction. Unfortunately, my search of the archives did not yield any results, as the archives are full of discussions regarding Adobe PDFs. </p>
<p class="MsoNormal"> </p><p class="MsoNormal">When assembled, the R-Value is only around R-6.0, or even less. If you believe all the propaganda these adobe salesmen are pushing, it would seem that an adobe wall can perform much better than that. Has anybody ever successfully modeled an adobe wall in eQUEST?</p>
<p class="MsoNormal"> </p><p class="MsoNormal"><span style="font-size:12.0pt">Cole Hudson, E.I.T.</span></p><p class="MsoNormal"><span style="font-size:9.0pt">Stridde Callins & Associates, Inc.</span></p><p class="MsoNormal">
<span style="font-size:9.0pt">342 S. Navigation Blvd.</span></p><p class="MsoNormal"><span style="font-size:9.0pt">Corpus Christi, TX 78405</span></p><p class="MsoNormal"><span style="font-size:9.0pt">Tel: <a href="tel:%28361%29%20883-9199" value="+13618839199" target="_blank">(361) 883-9199</a></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt">Cell: <a href="tel:%28361%29%20876-0560" value="+13618760560" target="_blank">(361) 876-0560</a></span></p><p class="MsoNormal"><span style="font-size:9.0pt">Fax: <a href="tel:%28361%29%20883-9177" value="+13618839177" target="_blank">(361) 883-9177</a> </span></p>
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