<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word"><head><META content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
<meta content="Microsoft Word 12 (filtered medium)" name=Generator>
<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:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Book Antiqua";
panose-1:2 4 6 2 5 3 5 3 3 4;}
@font-face
{font-family:"Century Gothic";
panose-1:2 11 5 2 2 2 2 2 2 4;}
@font-face
{font-family:"Berlin Sans FB";
panose-1:2 14 6 2 2 5 2 2 3 6;}
/* 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.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.apple-style-span
{mso-style-name:apple-style-span;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Arial","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.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>
<DIV>
<div class=WordSection1>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Low-e
films reflect heat back into the space based on their emissivity so you can expect
heating savings even with a lower SHGC. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I’d
expect Window5 to include the correct emissivity and for that to be passed
through the glass definition to eQuest. Is the film on the correct
surface in Window5? If you were entering your glass in eQuest using the
simplified method you would have to change the emissivity manually. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Though
this is from the manufacture, it’s still an interesting read: <a href="http://www.enerlogicfilm.com/pdf/EnerLogic-White-Paper.pdf">http://www.enerlogicfilm.com/pdf/EnerLogic-White-Paper.pdf</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Matt Dubrovich</span><span lang=EN-GB style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'> </span><span style='font-size:
10.0pt;font-family:"Arial","sans-serif";color:black'><br>
<br>
</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><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>Daniel
Knapp<br>
<b>Sent:</b> Friday, May 27, 2011 9:23 AM<br>
<b>To:</b> McArdle, Mike<br>
<b>Cc:</b> equest-users@lists.onebuilding.org; Dan Raphael<br>
<b>Subject:</b> Re: [Equest-users] Low-E Window Film<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div>
<p class=MsoNormal>On 2011-05-27, at 11:05 AM, McArdle, Mike wrote:<o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Dan, Do You mean decreasing the heat load (
not increasing ) </span><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If the solar heat gain is reduced in winter, less heat from
the sun will enter the windows and the heating load will be increased. <o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you, Sincerely,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Michael J. McArdle , P.E.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Buildings Engineer II, Project Manager</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>State of Vermont,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Buildings and General Services (BGS)</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>2 Governor Aiken Avenue</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Montpelier, Vt. 05633</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Office: 802-828-5650; cell: 802-272-4828</span><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in;
border-width:initial;border-color:initial'>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span></span><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><span class=apple-converted-space> </span>[mailto:equest-users-bounces@lists.onebuilding.org]<span class=apple-converted-space> </span><b>On Behalf Of<span class=apple-converted-space> </span></b>Daniel Knapp<br>
<b>Sent:</b><span class=apple-converted-space> </span>Friday, May 27, 2011
11:01 AM<br>
<b>To:</b><span class=apple-converted-space> </span>Raphael, Dan<br>
<b>Cc:</b><span class=apple-converted-space> </span><a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b><span class=apple-converted-space> </span>Re:
[Equest-users] Low-E Window Film</span><o:p></o:p></p>
</div>
</div>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>How does the film affect the U-value and the SHGC for the
window? It sounds like the film is reducing the solar heat gain
coefficient, and increasing the heating load. You should also keep in
mind that outdoor air loads can dominate the heating load in winter and that
envelope effects can be minimal depending on the climate and type of building.
You may want to look into the loads reports in the SIM file to see what
effects the film has on the building cooling and heating loads.<o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal>Cheers,<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal>Dan<o:p></o:p></p>
</div>
</div>
<div>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal><span class=apple-style-span><span style='font-size:13.5pt;
font-family:"Verdana","sans-serif";color:black'>—</span></span><span style='font-size:13.5pt;font-family:"Verdana","sans-serif";color:black'><br>
<span class=apple-style-span>Daniel Knapp, PhD, LEED® AP O+M</span><br>
<span class=apple-style-span><a href="mailto:danielk@arborus.ca">danielk@arborus.ca</a></span><br>
<br>
<span class=apple-style-span>Arborus Consulting</span><br>
<span class=apple-style-span>Energy Strategies for the Built Environment</span><br>
<span class=apple-style-span><a href="http://www.arborus.ca/">www.arborus.ca</a></span><br>
<span class=apple-style-span>76 Chamberlain Avenue </span><br>
<span class=apple-style-span>Ottawa, ON, K1S 1V9 </span><br>
<span class=apple-style-span>Phone: (613) 234-7178 ext. 113</span><br>
<span class=apple-style-span>Fax: (613) 234-0740</span><br>
<br>
<br>
<br>
<br>
</span><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal>On 2011-05-27, at 10:42 AM, Raphael, Dan wrote:<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><br>
<br>
<br>
<o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Has
anybody successfully modeled window film installation using eQuest?
Specifically, I am trying to model the Vista EnerLogic low-e film (since it is
eligible for tax incentives). I’ve used Optics5/Window5 to
construct the glass type using the EnerLogic applied film (NFRC ID# 2545) and
imported that into eQuest. When I test this retrofit in a sample
building, the savings are not what I expect (~65 yr. payback, assuming $7
installed cost). I would expect to see a payback somewhere around 10-15
years. What bothers me is that in the model, the heating load increases,
which would be expected for a typical window film, but this film claims to have
savings in all seasons due to the ability to trap heat in the building.
If anybody has had any success in modeling these window films and could provide
me with step-by-step instructions or any guidance, it’d be greatly
appreciated.</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Thanks!</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Book Antiqua","serif"'>Dan
Raphael</span></b><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Berlin Sans FB","sans-serif"'>Building
Performance Analyst</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='margin-top:3.0pt'><b><span style='font-size:10.0pt;
font-family:"Book Antiqua","serif"'>Integrated<span class=apple-converted-space> </span><span style='color:red'>Design
Solutions</span></span></b><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><span style='font-size:9.0pt;
font-family:"Berlin Sans FB","sans-serif"'>Architecture, Engineering, Interiors
& Technology</span><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Berlin Sans FB","sans-serif"'>1441
W. Long Lake, Suite 200</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Berlin Sans FB","sans-serif"'>Troy,
Michigan 48098</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Berlin Sans FB","sans-serif"'>tel:
248.823.2171</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Berlin Sans FB","sans-serif"'>fax:
248.823.2200</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a href="http://www.ids-troy.com/"><span style='font-family:"Berlin Sans FB","sans-serif"'>www.ids-troy.com</span></a></span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Century Gothic","sans-serif"'> </span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><a href="http://www.energystar.gov/"><span style='color:windowtext;text-decoration:
none'><image001.png></span></a></span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Verdana","sans-serif"'>_______________________________________________<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<span class=apple-converted-space> </span><a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a></span><o:p></o:p></p>
</div>
</div>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</DIV></BODY></HTML>