<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Webdings;
panose-1:5 3 1 2 1 5 9 6 7 3;}
@font-face
{font-family:"Franklin Gothic Medium";
panose-1:2 11 6 3 2 1 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Wahid,<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">Very interesting design!<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 take back what I said about no loads in the dummy zones. That makes sense if the ERVs only handle ventilation loads.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Again, specifying zonal exhaust as you have should result in no energy recovered.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">One more quick observation – you have extra roof surfaces in most of your spaces.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I suggest attaching the Riyadh weather file.<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">Is this going to be another one of those
<a href="http://news.yahoo.com/glare-london-skyscraper-melted-jaguar-133036022.html">
fryscrapers</a> that melts/burns the objects and <a href="http://www.aolnews.com/2010/09/28/hot-architecture-vegas-death-ray-singes-tourists/">
people</a> below?<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">Bill<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>
<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""> Wahid Hamed [mailto:wahid.hamed@gmail.com]
<br>
<b>Sent:</b> Monday, September 16, 2013 10:46 AM<br>
<b>To:</b> Bishop, Bill<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] ERV + Evap Cooling Modeling in eQuest<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><span style="color:#0B5394">Thanks Bill for your input.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#0B5394">I attached here *.pd2 file along with *.inp file agin.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#0B5394">I am using dummy space/zone method without any internal load, only the OA and exhaust flow rates through ERV have been modeled within the dummy zone and ERU system.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#0B5394"><br clear="all">
</span> <o:p></o:p></p>
</div>
<div>
<div>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#0B5394">Regards,</span><span style="font-family:"Arial","sans-serif";color:#500050"><o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#0B5394">Wahid</span><span style="font-family:"Arial","sans-serif";color:#500050"><o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#500050"> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#500050"> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#500050"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Arial","sans-serif";color:#0B5394">Wahid H. Mohamed</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#000066">, </span><span style="font-size:6.0pt;font-family:"Arial","sans-serif";color:#999999">LEED
AP BD+C</span><span style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999">Mechanical Project Engineer, Energy Modeler </span><span style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999">Saudi Diyar Consultants</span><span style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Arial","sans-serif";color:#999999"><a href="http://www.diyar.com" target="_blank"><span style="font-size:7.5pt">www.</span></a><a href="http://www.diyar.com" target="_blank"><span style="font-size:7.5pt">diyar.com</span></a> </span><span style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
</div>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999"> (+966)-5467 6<b>22 67</b></span><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">On Mon, Sep 16, 2013 at 4:46 PM, Bishop, Bill <<a href="mailto:bbishop@pathfinder-ea.com" target="_blank">bbishop@pathfinder-ea.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Wahid,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">It would be easier for others to look at your model if you also included the .pd2 file.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Based on your input file, you are modeling two ERVs and you are trying to use the “dummy space” method.
I do not use this method (yet) but others may have suggestions for you.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You are not going to get realistic results if I am interpreting your input file correctly:</span><o:p></o:p></p>
<p style="margin-left:.75in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">-</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Your two dummy spaces/zones have no occupants, equipment or lighting loads, or envelope loads (only OA)</span><o:p></o:p></p>
<p style="margin-left:.75in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">-</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You have specified zonal exhaust equal to the OA, which will simulate as no return air to the ERV</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Bill</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif"">William Bishop, PE, BEMP, BEAP, LEED AP
<span style="color:#006600">|</span> Pathfinder Engineers & Architects LLP</span></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">Senior Energy Engineer</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:5.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">134 South Fitzhugh Street</span><span style="font-size:9.0pt;color:#1F497D">
</span><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">Rochester, NY 14608</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">T:
<a href="tel:%28585%29%20325-6004" target="_blank">(585) 325-6004</a> </span><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">Ext. 114</span><span style="color:#1F497D">
</span><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">F:
<a href="tel:%28585%29%20325-6005" target="_blank">(585) 325-6005</a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="mailto:wbishop@pathfinder-ea.com" target="_blank"><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">bbishop@pathfinder-ea.com</span></a></span><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="http://www.pathfinder-ea.com/" target="_blank"><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">www.pathfinder-ea.com</span></a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:14.0pt;font-family:Webdings;color:green">P</span><span style="font-size:14.0pt;color:green">
</span><span style="font-size:7.5pt;color:green">Sustainability – the forest AND the trees.</span><span style="font-size:18.0pt;font-family:Webdings;color:green">
</span><span style="font-size:14.0pt;font-family:Webdings;color:green">P</span><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:green"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;border-color:currentColor currentColor">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><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>Wahid Hamed<br>
<b>Sent:</b> Monday, September 16, 2013 4:04 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> [Equest-users] ERV + Evap Cooling Modeling in eQuest</span><o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<div>
<div>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394">Dear All,</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394"> </span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394">I am using eQuest to model an Hotel building in a very hot, dry climate zone which is has a great opportunity for energy saving when using evaporative cooling
in summer. I have modeled direct evaporative cooling for 100% outdoor air handling unit along with sensible recovery wheel to recover the exhaust air stream energy into the outdoor air.</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394"> </span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394">When I run the model simulation and got into the "ERV Energy Recovery Summary" and "SUPL Evap/Desicant Cooling" reports, I could not interpretate the outputs to
understand if the system is working appropriately or not.</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394"> </span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394">I wonder if anyone can help me and provide me with some guidance or example on ERV and Evap Cooling systems input and control setup as well as the system
output reports interpretation and what I need to do to get my model run correctly reflecting the real system operation and predicted saving.</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial","sans-serif";color:#0B5394">- My model *.inp file is attached for your reference.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial","sans-serif";color:#0B5394"><br clear="all">
</span><o:p></o:p></p>
</div>
<div>
<div>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#0B5394">Regards,</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-family:"Arial","sans-serif";color:#500050"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-family:"Arial","sans-serif";color:#0B5394">Wahid H. Mohamed</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#000066">, </span><span style="font-size:6.0pt;font-family:"Arial","sans-serif";color:#999999">LEED AP BD+C</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999">Mechanical Project Engineer, Energy Modeler </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999">Saudi Diyar Consultants</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-family:"Arial","sans-serif";color:#999999"><a href="http://www.diyar.com" target="_blank"><span style="font-size:7.5pt">www.</span></a><a href="http://www.diyar.com" target="_blank"><span style="font-size:7.5pt">diyar.com</span></a> </span><o:p></o:p></p>
</div>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#999999"> (+966)-5467 6<b>22 67</b></span><o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
</body>
</html>