<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<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:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"
xmlns:ns0="urn:schemas-microsoft-com:office:smarttags">
<head>
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<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:Garamond;
panose-1:2 2 4 4 3 3 1 1 8 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-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.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.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Garamond","serif";
color:black;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</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=Section1>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'>Greg,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'> Your best bet is to contact the (or any) manufacturer
and have them tell you the chiller efficiency at the given operating
conditions. I’ve never tried to model a thermal storage scenario before, but I
have tried to optimize a heating hot water temperature to try to take advantage
of a condensing boiler, and just changing the loop temperature is not enough
for eQuest to catch on. You have to manually change the efficiencies for each
piece of equipment in order to accurately model this. I know it’s not exactly
what you had asked for, but I hope it helps. Thanks.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'>daniel<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif";
color:black'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:black'>Daniel I. Deese, EI</span></b><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:black'>| </span><b><span
style='font-size:12.0pt;font-family:"Arial","sans-serif"'><ns0:PersonName><span
style='color:black'>CRB</span></ns0:PersonName><span style='color:black'>
Consulting Engineers</span></span></b><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:black'> | <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray'>1255 Crescent Green, </span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif"'><ns0:address><ns0:Street><span
style='color:gray'>Suite</span></ns0:Street><span style='color:gray'> 350</span></ns0:address><span
style='color:gray'> | </span><ns0:place><ns0:City><span style='color:gray'>Cary</span></ns0:City><span
style='color:gray'>, </span><ns0:State><span style='color:gray'>NC</span></ns0:State><span
style='color:gray'> </span><ns0:PostalCode><span style='color:gray'>27518</span></ns0:PostalCode></ns0:place><span
style='color:gray'> | <o:p></o:p></span></span></p>
<p class=MsoNormal><a name="OLE_LINK1"></a><a name="OLE_LINK2"><b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>P:</span></b></a><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> 919-852-5443 |</span><b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> F:</span></b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> 919-852-5454 |
</span><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray'>X:</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray'> 4543</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray;layout-grid-mode:line'>Email: </span><a
href="mailto:daniel.deese@crbusa.com"><span style='font-size:9.0pt;font-family:
"Arial","sans-serif";color:gray'>daniel.deese@crbusa.com</span></a><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>________________________________________________________________________________________<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'><o:p> </o:p></span></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>This document may contain confidential information and is
intended for use by the addressee only. If you are not <o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>the intended recipient, please do not transmit, copy, disclose,
or utilize this communication in any manner. If you <o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>received this message in error, please notify the sender
immediately and delete this message.<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'><o:p> </o:p></span></i></p>
</div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:Webdings;
color:green'>ü</span><span style='font-size:9.0pt;font-family:Webdings;
color:green'> </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:green'>Please consider the environment before printing this email.</span><span
style='font-size:12.0pt;font-family:"Garamond","serif";color:black'><o:p></o:p></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"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Greg
Collins<br>
<b>Sent:</b> Tuesday, March 23, 2010 5:11 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Ice Storage - Chiller efficiency, etc.<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have two air-cooled chillers that I’m using to charge an
ice thermal storage system at night. I have entered the EIR that equest
calculated with the EER based on the chillers’ normal operating conditions (44
degree CHWST). Now, the model with ice storage is using about 46% less
energy for space cooling, which is way too low. They should be pretty
close to the same.. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anybody have experience with this? I’m thinking
that equest isn’t derating my chillers while they’re making ice (should be ~35%
decrease in efficiency). I will probably have to get the chiller
efficiencies at ice-making conditions and add 2 more chillers into equest at
these conditions to charge my ice storage, and just allow the other chillers to
run during the day. Can anybody confirm this or provide any other tips?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b>Greg Collins</b><br>
Design Engineer / Energy Analyst<o:p></o:p></p>
<p class=MsoNormal>Mechanical Department<br>
LEEDŽ Accredited Professional<br>
<br>
<a href="http://www.glumac.com/"><span style='text-decoration:none'><img
border=0 width=343 height=41 id="Picture_x0020_1"
src="cid:image001.gif@01CACB2C.28A0D930"
alt="http://www.glumac.com/glumacsig.gif"></span></a><o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<div>
<div class=MsoNormal>
<hr size=2 width=330 style='width:247.5pt' noshade style='color:gray'
align=left>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal>18200 Von Karman Ave., Suite 100<br>
Irvine, CA 92612<br>
T. 949.833.8190 F. 949.833.0252<br>
<br>
<b>Thinking. Inside the building.</b><br>
<a href="http://www.glumac.com/">www.glumac.com</a> <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</body>
</html>