<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (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:"Yu Gothic";
panose-1:2 11 4 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@Yu Gothic";
panose-1:2 11 4 0 0 0 0 0 0 0;}
/* 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:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@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="#0563C1" vlink="#954F72"><div dir="auto">Hi Nick,<br><br></div>
<div dir="auto">I wrote an Openstudio measure on the subject in which I included a supporting excel file that will help you calculate that. You can just download the xlsx in the right column here and ignore the rest: <br></div>
<div dir="auto"><a href="https://bcl.nrel.gov/node/83628">https://bcl.nrel.gov/node/83628</a><br><br></div>
<div dir="auto">E+ engineering documentation for the Burch and Christensen correlation: <br></div>
<div dir="auto"><!-- tmjah_g_1299s --><a href="https://bigladdersoftware.com/epx/docs/9-0/engineering-reference/water-systems.html#water-mains-temperatures">https://bigladdersoftware.com/epx/docs/9-0/engineering-reference/water-systems.html#water-mains-temperatures</a>.<!-- tmjah_g_1299e --><br><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Cheers,<!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Julien <!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->--<!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Sent from a mobile device, please excuse the brevity.<!-- tmjah_g_1299e --><br><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Julien Marrec, EBCP, BPI MFBA<!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Owner<!-- tmjah_g_1299e --><br></div>
<div dir="auto"><img src="cid:ii_8594e911d342441f" width="56" height="19"><!-- tmjah_g_1299s --><!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Direct: +33 6 95 14 42 13<!-- tmjah_g_1299e --><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Website: <!-- tmjah_g_1299e --><a href="http://www.effibem.com"><!-- tmjah_g_1299s --><a href="http://www.effibem.com">www.effibem.com</a><!-- tmjah_g_1299e --></a><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->LinkedIn (<!-- tmjah_g_1299e --><a href="https://www.linkedin.com/in/julienmarrec"><!-- tmjah_g_1299s -->en<!-- tmjah_g_1299e --></a><!-- tmjah_g_1299s -->) | (<!-- tmjah_g_1299e --><a href="https://fr.linkedin.com/in/julienmarrec/fr"><!-- tmjah_g_1299s -->fr<!-- tmjah_g_1299e --></a><!-- tmjah_g_1299s -->)<!-- tmjah_g_1299e --></div>
<div class="gmail_quote" >On Feb 28, 2019, at 20:51, Nicholas Caton via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="WordSection1">
<p class="MsoNormal">Hi everyone,</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">I have a situation where I want to estimate the seasonal <u>
variance</u> in the potable domestic water supply as a function of atmospheric drybulb temperatures. I *think* eQuest has some algorithm to derive 12 (monthly average) temperatures from the weather file data for makeup/DHW purposes… however after scanning
the 2.1e engineers manual and a first pass at trying to find some helpful entry in the resource manual, I’m coming up dry so far.
</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">I’m trying hoping to source the equations & assumptions used for this estimation, so that I can modify it to fit my project. I’m not specifically married to matching eQuest’s output – any similar process/formulae would be welcome.
</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">Any suggestions?</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">~Nick</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img width="726" height="9" style="width:7.5625in;height:.0937in" id="Picture_x0020_1" src="cid:image001.png@01D4CF6C.A8C3AA40"></span></p><p></p><p></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="color:#3A7A46"></span></p><p></p><p></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="724" style="width:543.0pt;border-collapse:collapse">
<tbody>
<tr>
<td width="230" valign="top" style="width:172.3pt;padding:0in 0in 0in 0in">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Regional Energy Engineering Manager</span></p><p></p><p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Schneider Electric</span><span style="color:#1F497D"></span></p><p></p><p></p>
</td>
<td width="291" valign="top" style="width:218.3pt;padding:0in 0in 0in 0in">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">D </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6361
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">M </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">785.410.3317
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">F </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6380</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><span style="color:#1F497D"><a href="mailto:nicholas.caton@schneider-electric.com"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a></span></p><p></p><p></p>
</td>
<td width="203" valign="top" style="width:152.4pt;padding:0in 0in 0in 0in">
<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">15200 Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
United States</span><span style="color:#1F497D"></span></p><p></p><p></p>
</td>
</tr>
<tr style="height:4.0pt">
<td width="724" colspan="3" valign="top" style="width:543.0pt;padding:0in 0in 0in 0in;height:4.0pt">
<p class="MsoNormal" style="mso-line-height-alt:4.0pt"><span style="color:#3A7A46"><img border="0" width="722" height="49" style="width:7.5208in;height:.5104in" id="_x0000_i1026" src="cid:image002.png@01D4CF6C.A8C3AA40"></span></p><p></p><p></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"></p><p> </p>
</div>
<pre class="blue"><hr><br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG<br></pre></blockquote></div></body></html>