<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=utf-8">
<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:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@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:Consolas;
panose-1:2 11 6 9 2 2 4 3 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;
color:black;}
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;
color:black;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
p.yiv9572653599msonormal0, li.yiv9572653599msonormal0, div.yiv9572653599msonormal0
{mso-style-name:yiv9572653599msonormal0;
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;
color:black;}
p.yiv9572653599msonormal, li.yiv9572653599msonormal, div.yiv9572653599msonormal
{mso-style-name:yiv9572653599msonormal;
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;
color:black;}
p.yiv9572653599msochpdefault, li.yiv9572653599msochpdefault, div.yiv9572653599msochpdefault
{mso-style-name:yiv9572653599msochpdefault;
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;
color:black;}
span.yiv9572653599msohyperlink
{mso-style-name:yiv9572653599msohyperlink;}
span.yiv9572653599msohyperlinkfollowed
{mso-style-name:yiv9572653599msohyperlinkfollowed;}
span.yiv9572653599emailstyle18
{mso-style-name:yiv9572653599emailstyle18;}
span.yiv9572653599emailstyle19
{mso-style-name:yiv9572653599emailstyle19;}
span.yiv9572653599emailstyle20
{mso-style-name:yiv9572653599emailstyle20;}
p.yiv9572653599msonormal1, li.yiv9572653599msonormal1, div.yiv9572653599msonormal1
{mso-style-name:yiv9572653599msonormal1;
margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Times New Roman",serif;
color:black;}
span.yiv9572653599msohyperlink1
{mso-style-name:yiv9572653599msohyperlink1;
color:#0563C1;
text-decoration:underline;}
span.yiv9572653599msohyperlinkfollowed1
{mso-style-name:yiv9572653599msohyperlinkfollowed1;
color:#954F72;
text-decoration:underline;}
p.yiv9572653599msonormal01, li.yiv9572653599msonormal01, div.yiv9572653599msonormal01
{mso-style-name:yiv9572653599msonormal01;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Times New Roman",serif;
color:black;}
span.yiv9572653599emailstyle181
{mso-style-name:yiv9572653599emailstyle181;
color:windowtext;}
span.yiv9572653599emailstyle191
{mso-style-name:yiv9572653599emailstyle191;
color:windowtext;}
span.yiv9572653599emailstyle201
{mso-style-name:yiv9572653599emailstyle201;
color:#1F497D;}
p.yiv9572653599msochpdefault1, li.yiv9572653599msochpdefault1, div.yiv9572653599msochpdefault1
{mso-style-name:yiv9572653599msochpdefault1;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:10.0pt;
font-family:"Times New Roman",serif;
color:black;}
span.EmailStyle36
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.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 bgcolor="white" 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">It seems to me that the centre of building underslab temperature gradient would change over time. When the building is first turned on, the underslab may be close
to the average deep ground temperature. Depending on soil type, with the room temperature approximately constant, I would expect that underslab soil temperature to warm up?
<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 haven’t been able to find a paper addressing the subject.
<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>
<p class="MsoNormal"><b><span style="font-size:6.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Christopher R. Jones</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">,
P.Eng.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Technical Specialist<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Sustainability & Energy<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><img width="78" height="37" id="Picture_x0020_15" src="cid:image001.png@01D39E91.2EECBE30"></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">T +1 416-644-0252<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Toronto, ON M4P 1E4 Canada</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><br>
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-CA"><a href="wsp.com"><span style="color:#0563C1">wsp.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><u><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:blue;mso-fareast-language:EN-CA"><o:p><span style="text-decoration:none"> </span></o:p></span></u></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#7F7F7F;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#6EA900;mso-fareast-language:FR">Please consider the environment before printing...<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Joe Huang via Equest-users<br>
<b>Sent:</b> Friday, February 02, 2018 4:55 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Slab on Grade Floor Heat Loss<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>The use of F2 factors for foundation heat flows has always been flawed. The simplest explanation for the F2 factor is that it's the effective U-value per perimeter length. This formulation assumes that there are no heat loses through the foundation away
from the perimeter, which is simply not true (think of the case in Minnesota where the constant deep ground temperatures is between 55 and 60 F). The other problem is the delta-T used to derive the F2 factor is not clearly defined. All the studies I've
seen (albeit all these are from 30 years ago or more) derived them against the outdoor air temperature, or more exactly, Tin - Tair. This then opens up the question whether in DOE-2 the slab should be modeled as an exterior wall or an underground wall?
The third problem is that by treating the slab as a monolithic surface, it lumps the heat flow characteristics along the perimeter with those of the slab core , which differ in both magnitude and time lag.
<o:p></o:p></p>
<p>When I last had a project on ground heat flows 17 years ago, I proposed a simplified method where the foundation was divided into three regions (perimeter 1' , near perimeter 1-4', and core >4' deep), each with 3 conductances to the daily average
air temperature , average air temperature over the past three weeks, and the deep ground temperature. This method was implemented in an enhanced version of DOE-2.1E, and from what I hear, adopted into California Title-24. If anyone is interested to read
the report, just send me an e-mail.<a href="#yiv9572653599Picture_x0020_4"><br>
</a><o:p></o:p></p>
<p>The good news for everyone here is that there is now a RTAR/WS (ASHRAE terminology for a RFP) being circulated in TC 4.7 (Energy Calculations) that aims to develop a better simplified ground model to replace the F2 factors. Stay tuned but be forewarned
that it takes ASHRAE at least a year to approve a project and another half year to pick a contractor, so don't expect any products for another 3 years.<o:p></o:p></p>
<p>Joe<o:p></o:p></p>
<pre>Moraga CA 94556<o:p></o:p></pre>
<pre><a href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a><o:p></o:p></pre>
<pre><a href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data<o:p></o:p></pre>
<pre>(o) (925)388-0265<o:p></o:p></pre>
<pre>(c) (510)928-2683<o:p></o:p></pre>
<pre>"building energy simulations at your fingertips"<o:p></o:p></pre>
<div>
<p class="MsoNormal">On 2/2/2018 12:26 PM, Paul Diglio via Equest-users wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div id="yui_3_16_0_ym19_1_1517591308519_42721">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Thanks Bill, you are always such a big help. That is what I thought, but just wanted to run it by the forum.<o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42720">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42723">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Thanks to you too Nathan.<o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42618">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42619">
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif">Paul Diglio<o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42620">
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42626">
<div id="yui_3_16_0_ym19_1_1517591308519_42625">
<div id="yui_3_16_0_ym19_1_1517591308519_42624">
<div id="yui_3_16_0_ym19_1_1517591308519_42623">
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">
<hr size="1" width="100%" align="center">
</span></div>
<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> "Bishop, Bill"
<a href="mailto:bbishop@pathfinder-ea.com"><bbishop@pathfinder-ea.com></a><br>
<b>To:</b> Nathan Miller <a href="mailto:nathanm@rushingco.com"><nathanm@rushingco.com></a>; Paul Diglio
<a href="mailto:paul.diglio@sbcglobal.net"><paul.diglio@sbcglobal.net></a>; <a href="mailto:equest-users@onebuilding.org">
"equest-users@onebuilding.org"</a> <a href="mailto:equest-users@onebuilding.org">
<equest-users@onebuilding.org></a> <br>
<b>Sent:</b> Friday, February 2, 2018 3:13 PM<br>
<b>Subject:</b> RE: [Equest-users] Slab on Grade Floor Heat Loss</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42658">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
<div id="yiv9572653599">
<div id="yui_3_16_0_ym19_1_1517591308519_42657">
<div id="yui_3_16_0_ym19_1_1517591308519_42656">
<div id="yui_3_16_0_ym19_1_1517591308519_42700">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D">Paul,</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42655">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D">Your reviewer may have thought that if the slab was showing up as an “exterior surface” (such as on the LV-D report) than the model was simulating heat
transfer between the zones and the outside air through the slab. But eQUEST/DOE-2 simulates heat transfer across underground surfaces differently, as described in the UNDERGROUND-WALL and UNDERGROUND-FLOOR section of the DOE-2 help documentation. The main
difference is that ground temperature is used instead of the OA temperature as the outside temperature. The monthly ground temperature is taken from the weather file, or can be entered as SITE-PARAMETERS:GROUND-T.</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42765">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D"> </span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42660">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D">The eQUEST wizard creates custom constructions for each underground surface based on inputs for Exterior/Cavity Insulation and Perimeter Floor Insulation.
Underground floors are given constructions with low U-factor (high R-value) consistent with the lower heat transfer that would be expected.</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42766">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D"> </span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42699">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D">Regards,</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D">~Bill</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42662">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D"> </span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42669">
<div id="yui_3_16_0_ym19_1_1517591308519_42697">
<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP</span></b><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="0" style="width:394.8pt;border-collapse:collapse" id="yui_3_16_0_ym19_1_1517591308519_42668">
<tbody>
<tr style="min-height:13.45pt" id="yui_3_16_0_ym19_1_1517591308519_42666">
<td width="345" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:13.45pt">
<div>
<p class="MsoNormal" style="line-height:105%"><b><span style="font-size:9.0pt;line-height:105%">Senior Energy Engineer</span></b><o:p></o:p></p>
</div>
</td>
<td width="182" rowspan="6" style="width:136.35pt;padding:0in 5.4pt 0in 5.4pt;min-height:13.45pt" id="yui_3_16_0_ym19_1_1517591308519_42665">
<div>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%"><img border="0" width="56" height="38" id="yiv9572653599Picture_x0020_4" src="cid:image007.jpg@01D39C38.6333FF10">
<img border="0" width="46" height="39" id="yiv9572653599Picture_x0020_2" src="cid:image008.jpg@01D39C38.6333FF10"></span><o:p></o:p></p>
</div>
</td>
</tr>
<tr style="min-height:4.55pt">
<td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:4.55pt">
<div>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:5.0pt;line-height:105%"> </span><o:p></o:p></p>
</div>
</td>
</tr>
<tr style="min-height:9.8pt">
<td width="345" nowrap="" valign="bottom" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:9.8pt">
<div>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%">134 South Fitzhugh Street</span><span style="font-size:9.0pt;line-height:105%;color:#1F497D">
</span><span style="font-size:9.0pt;line-height:105%">Rochester, NY 14608</span><o:p></o:p></p>
</div>
</td>
</tr>
<tr style="min-height:12.4pt">
<td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:12.4pt">
<div>
<p class="MsoNormal" style="line-height:105%"><b><i><span style="font-size:9.0pt;line-height:105%">T: (585) 698-1956</span></i></b><b><i><span style="color:#002060">
</span></i></b><span style="color:#1F497D"> </span><span style="font-size:9.0pt;line-height:105%">F: (585) 325-6005</span><o:p></o:p></p>
</div>
</td>
</tr>
<tr style="min-height:9.8pt">
<td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:9.8pt">
<div>
<p class="MsoNormal" style="line-height:105%"><span style="color:#1F497D"><a href="mailto:wbishop@pathfinder-ea.com" target="_blank"><span style="font-size:9.0pt;line-height:105%">bbishop@pathfinder-ea.com</span></a></span><span style="font-size:9.0pt;line-height:105%">
</span><span style="color:#1F497D"><a href="http://www.pathfinder-ea.com/" target="_blank"><span style="font-size:9.0pt;line-height:105%">www.pathfinder-ea.com</span></a></span><o:p></o:p></p>
</div>
</td>
</tr>
<tr style="min-height:24.6pt">
<td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:24.6pt">
<div style="margin-top:3.0pt">
<p class="MsoNormal" style="line-height:105%"><span style="color:#1F497D"><img border="0" width="34" height="32" id="yiv9572653599Picture_x0020_5" src="cid:image009.png@01D39C38.6333FF10" alt="http://png-5.findicons.com/files/icons/977/rrze/720/globe.png"></span><span style="font-size:7.5pt;line-height:105%;color:#00B0F0">Carbon
Fee and Dividend - simple, effective, and market-based.</span><o:p></o:p></p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42694">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:#1F497D"> </span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yiv9572653599yqt28255">
<div id="yui_3_16_0_ym19_1_1517591308519_42684">
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in" id="yui_3_16_0_ym19_1_1517591308519_42683">
<div id="yui_3_16_0_ym19_1_1517591308519_42682">
<p class="MsoNormal" style="background:white"><b><span style="font-family:"Helvetica",sans-serif">From:</span></b><span style="font-family:"Helvetica",sans-serif"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Nathan Miller via Equest-users<br>
<b>Sent:</b> Friday, February 02, 2018 2:35 PM<br>
<b>To:</b> Nathan Miller <a href="mailto:nathanm@rushingco.com"><nathanm@rushingco.com></a>; Paul Diglio
<a href="mailto:paul.diglio@sbcglobal.net"><paul.diglio@sbcglobal.net></a>; <a href="mailto:equest-users@onebuilding.org">
equest-users@onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Slab on Grade Floor Heat Loss<o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Fixed my typo in the F-factor heat loss calc (should have read 50 ft of perimeter)… See below.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42693">
<div style="margin-bottom:4.0pt">
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif">Nathan Miller, PE, LEED AP BD+C –
</span></b><i><span style="font-size:8.0pt;font-family:"Helvetica",sans-serif">Mechanical Engineer/Senior Energy Analyst</span></i><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div style="margin-top:3.0pt">
<p class="MsoNormal" style="line-height:115%;background:white"><b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif">RUSHING</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif"> |
<b>O</b> 206-285-7100 | <b>C</b> 207-650-3942</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42692">
<p class="MsoNormal" style="line-height:115%;background:white"><b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif"><a href="http://www.rushingco.com/" target="_blank"><span style="color:#6F1200">www.rushingco.com</span></a></span></b><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div id="yui_3_16_0_ym19_1_1517591308519_42689">
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in" id="yui_3_16_0_ym19_1_1517591308519_42688">
<div id="yui_3_16_0_ym19_1_1517591308519_42687">
<p class="MsoNormal" style="background:white"><b><span style="font-family:"Helvetica",sans-serif">From:</span></b><span style="font-family:"Helvetica",sans-serif"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank" id="yui_3_16_0_ym19_1_1517591308519_42686">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Nathan Miller via Equest-users<br>
<b>Sent:</b> Friday, February 2, 2018 2:33 PM<br>
<b>To:</b> Paul Diglio <<a href="mailto:paul.diglio@sbcglobal.net" target="_blank">paul.diglio@sbcglobal.net</a>>;
<a href="mailto:equest-users@onebuilding.org" target="_blank">equest-users@onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Slab on Grade Floor Heat Loss<o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">In the past I’ve done a conversion of F-factor (perimeter based) slab-on-grade heat loss to U-factor (area) and input that in on a zone-by-zone basis if I really
wanted to nail down SOG heat loss. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Example- Space is 20’ x 30’, but the exposed perimeter is only two of the faces (20’ + 30’). Lets say it is uninsulated SOG.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">F-factor from 90.1: F = 0.73 Btu/(hr*ft*F)<br>
<br>
Perimeter based heat loss: 0.73 Btu/(hr*ft*F) * 50 ft = 36.5 BTU/(hr *F)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Then we can back-calculate the U-factor to assume for the whole floor to equate to that heat loss: 36.5 BTU/(hr *F) = 600 SF * X BTU/(hr*SF*F) -> U = 0.0608 BTU/(hr*SF*F)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">You can create a custom floor construction for each space to provide the U-factor to produce equivalent heat loss that the F-factor calcs are telling you lose. For
purely core zones (no exposed perimeter), I guess the F-factor calcs are telling us were not really losing heat through that slab (doesn’t’ seem right, but it probably is relatively small)
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<div style="margin-bottom:4.0pt">
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif">Nathan Miller, PE, LEED AP BD+C –
</span></b><i><span style="font-size:8.0pt;font-family:"Helvetica",sans-serif">Mechanical Engineer/Senior Energy Analyst</span></i><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div style="margin-top:3.0pt">
<p class="MsoNormal" style="line-height:115%;background:white"><b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif">RUSHING</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif"> |
<b>O</b> 206-285-7100 | <b>C</b> 207-650-3942</span><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="line-height:115%;background:white"><b><span style="font-size:8.0pt;line-height:115%;font-family:"Helvetica",sans-serif"><a href="https://url.emailprotection.link/?a6X-5ry0mOOudUi-eMfQ7K9LfplwNoMV9idJhgEyf85c%7E" target="_blank"><span style="color:#6F1200">www.rushingco.com</span></a></span></b><span style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<div>
<p class="MsoNormal" style="background:white"><b><span style="font-family:"Helvetica",sans-serif">From:</span></b><span style="font-family:"Helvetica",sans-serif"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Paul Diglio via Equest-users<br>
<b>Sent:</b> Friday, February 2, 2018 2:19 PM<br>
<b>To:</b> <a href="mailto:equest-users@onebuilding.org" target="_blank">equest-users@onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Slab on Grade Floor Heat Loss<o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
<div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11245">
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">I recently submitted a model to the local utility company for an incentive. Part of the buildings' first floor is slab on grade.<o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11310">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11309">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">One of the comments I received back is that this erroneously shows up as an exterior surface and I should delete all the slab on grade floors in the component tree.
Doesn't seem right to me.<o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11372">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11378">
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">I did a few and it does reduce the overall energy consumption. In the 3D model, no floors show, just open to the interior of the zone.<o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11371">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11373">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">So is eQuest assuming that without this floor, there is no heat loss out the bottom of the zone? Is this reasonable?<o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11387">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11388">
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Thank you,<o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11246">
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
</div>
</div>
<div id="yiv9572653599yui_3_16_0_ym19_1_1517591308519_11247">
<div style="margin-bottom:12.0pt">
<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif">Paul Diglio<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Equest-users mailing list<o:p></o:p></pre>
<pre><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><o:p></o:p></pre>
<pre>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
<hr>
<font face="Arial" color="Gray" size="1"><br>
<br>
NOTICE: This communication and any attachments ("this message") may contain information which is privileged, confidential, proprietary or otherwise subject to restricted disclosure under applicable law. This message is for the sole use of the intended recipient(s).
Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on, this message is strictly prohibited. If you have received this message in error, or you are not an authorized or intended recipient, please notify
the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies. You are receiving this communication because you are listed as a current WSP contact. Should you have any questions
regarding WSP's electronic communications policy, please consult our Anti-Spam Commitment at
<a href="http://www.wsp.com/casl">www.wsp.com/casl</a>. For any concern or if you believe you should not be receiving this message, please forward this message to
<a href="mailto:caslcompliance@wsp.com">caslcompliance@wsp.com</a> so that we can promptly address your request. Note that not all messages sent by WSP qualify as commercial electronic messages.
<br>
<br>
AVIS : Ce message, incluant tout fichier l'accompagnant (« le message »), peut contenir des renseignements ou de l'information privilégiés, confidentiels, propriétaires ou à divulgation restreinte en vertu de la loi. Ce message est destiné à l'usage exclusif
du/des destinataire(s) voulu(s). Toute utilisation non permise, divulgation, lecture, reproduction, modification, diffusion ou distribution est interdite. Si vous avez reçu ce message par erreur, ou que vous n'êtes pas un destinataire autorisé ou voulu, veuillez
en aviser l'expéditeur immédiatement et détruire le message et toute copie électronique ou imprimée. Vous recevez cette communication car vous faites partie des contacts de WSP. Si vous avez des questions concernant la politique de communications électroniques
de WSP, veuillez consulter notre Engagement anti-pourriel au <a href="http://www.wsp.com/lcap">
www.wsp.com/lcap</a>. Pour toute question ou si vous croyez que vous ne devriez pas recevoir ce message, prière de le transférer au
<a href="mailto:conformitelcap@wsp.com">conformitelcap@wsp.com</a> afin que nous puissions rapidement traiter votre demande. Notez que ce ne sont pas tous les messages transmis par WSP qui constituent des messages electroniques commerciaux.
<br>
</font><br>
<font face="Arial" color="WhiteSmoke" size="0.10"><br>
<br>
-LAEmHhHzdJzBlTWfa4Hgs7pbKl </font>
</body>
</html>