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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Jeremiah,<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">While dumping eQuest entirely and (re?)starting a project using different software may certainly be a viable solution, I think it’s reasonable to assume someone
posting a “how do I do this in eQuest” question in forum titled [Equest-users] is probably not looking for such answers first! I personally understand EnergyPlus is often the tool-of-choice for green-roof specific research, but let’s avoid telling a carpenter
to throw away his hand saw just because power tools exist ;).<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">John,<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">eQuest can certainly *approximate* green roofs, to varying degrees of accuracy. There were a couple long, informative, and unfortunately disjointed conversations
on this exact topic held over the [bldg-sim] list some time ago. I’m attaching those messages including various attachments and white papers here in a zip file – if you can move these into a folder in outlook or similar you may find it easier to follow the
flow of the conversation...<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Read up on what’s been discussed so far, and I’m certain you’ll be able to decide for yourself how comfortable you are using eQuest for your current project
;). <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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards,<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">~Nick<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><img width="119" height="37" id="Picture_x0020_1" src="cid:image001.jpg@01CCF7D5.A8F8BCB0" alt="cid:489575314@22072009-0ABB"></span><b><span style="font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;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, P.E.</span></b><b><span style="font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900">SENIOR ENGINEER<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">Smith & Boucher Engineers</span><span style="font-size:7.5pt;color:#CC9900"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">25501 west valley parkway, suite 200<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">olathe, ks 66061<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">direct 913.344.0036<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">fax 913.345.0617<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";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 style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue">
</span></u><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"><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:"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>Nathan Miller<br>
<b>Sent:</b> Thursday, March 01, 2012 10:18 AM<br>
<b>To:</b> 'CleanTech Analytics'; 'John Aulbach'<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Green Roof - eQuest style<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:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I suppose there is probably some benefit to a green roof, but I’ve never tried to claim credit for it.
<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">At least in Seattle’s damp climate, when you would most benefit from the additional insulation of a green-roof-layer (winter) is the same time of the year the
growth medium will be saturated, and likely provide you with the least insulative value. In the summer, when you would actually want the heat to escape, the medium will dry out (unless you are irrigating it).
<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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Soil has an insulative value of only around R-0.104/in (at least according to a table in the Seattle Energy Code), so even ignoring moisture levels, it doesn’t
seem like there is much benefit there. <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>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I suppose in a heavy cooling climate the reflectivity of the plants might get you some benefit, as well as the evaportative cooling effect if you are irrigating.
Is that where the credit would be? Is there a thermal mass benefit?<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>
<p class="MsoNormal" style="margin-top:1.0pt"><b><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#632423">Nathan Miller, PE, LEED AP BD+C<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-top:4.0pt"><i><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:black">Mechanical Engineer/Senior Energy Analyst<o:p></o:p></span></i></p>
<p class="MsoNormal" style="margin-top:8.0pt;line-height:115%"><b><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#632423">O
</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black">206-285-7100</span><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#BFAB7F">
</span><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black">|
</span><b><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#632423">D</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#A50021">
</span><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black">206-788-4577</span><span style="font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#BFAB7F"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-top:3.0pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="http://www.rushingco.com/"><b><i><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#632423">www.rushingco.com</span></i></b></a><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:"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">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>CleanTech Analytics<br>
<b>Sent:</b> Thursday, March 01, 2012 7:08 AM<br>
<b>To:</b> John Aulbach<br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Green Roof - eQuest style<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#336666">John,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#336666">I advise you to use a more modern software that has the ability to correctly simulate the effects of a Green Roof rather then some wacky eQuest work around. Professor David
Sailor of Portland State University developed the Green Roof object for Energy Plus that uses a a finite difference algorithm and works well. The problem with
</span>eQuest<span style="font-family:"Verdana","sans-serif";color:#336666">/DOE2 is that it is based on a conduction transfer algorithm, and can not really emulate the effects of a Green Roof. If you need the easy to use inputs, I suggest Design Builder to
generate the Energy Plus file. </span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#336666">Best of luck, and feel free to ask if you need more about EP/DB..</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Mar 1, 2012 at 6:04 AM, John Aulbach <<a href="mailto:jra_sac@yahoo.com">jra_sac@yahoo.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">OK, my fellow Raiders of the Lost BTU..<br>
<br>
What would be your advice for developing a green roof in eQuest? I am sure some of you have gone through the USGBC with hopes of getting this approved.<br>
<br>
I eagerly await your suggestions with thanks.<span style="color:#888888"><br>
<br>
<span class="hoenzb">John Aulbach</span><br>
<span class="hoenzb">Partner Energy</span></span><o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">Jeremiah D. Crossett</span></i><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">CleanTech Analytics</span></i><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">503-688-8951</span></i><o:p></o:p></p>
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<p class="MsoNormal"><a href="http://www.cleantechanalytics.com" target="_blank"><i><span style="font-family:"Verdana","sans-serif";color:#999999">www.cleantechanalytics.com</span></i></a><o:p></o:p></p>
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<p class="MsoNormal" align="center" style="text-align:center"><o:p> </o:p></p>
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<p align="center" style="margin:0in;margin-bottom:.0001pt;text-align:center"><i><span style="font-size:8.5pt;font-family:"Droid Serif","serif";color:#CCCCCC;background:white">This document may contain valuable information proprietary to CleanTech Analytics
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