<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1504832178680_76850"><span id="yui_3_16_0_ym19_1_1504832178680_76910">Thanks Bruce & Bill.</span></div><div id="yui_3_16_0_ym19_1_1504832178680_76851"> </div><div class="signature" id="yui_3_16_0_ym19_1_1504832178680_76852">Paul Diglio<br>87 Fairmont Avenue <br>New Haven, CT 06513 <br><br><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1504832178680_76929"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1504832178680_76934" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1504832178680_76933"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1504832178680_76932"> <div dir="ltr" id="yui_3_16_0_ym19_1_1504832178680_76931"> <font id="yui_3_16_0_ym19_1_1504832178680_76930" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> "Bishop, Bill" <bbishop@pathfinder-ea.com><br> <b><span style="font-weight: bold;">To:</span></b> Bruce Easterbrook <bruce5@bellnet.ca>; Paul Diglio <paul.diglio@sbcglobal.net> <br><b><span style="font-weight: bold;">Cc:</span></b> "equest-users@lists.onebuilding.org" <equest-users@lists.onebuilding.org><br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, September 8, 2017 11:38 AM<br> <b id="yui_3_16_0_ym19_1_1504832178680_76936"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1504832178680_76935">Subject:</span></b> RE: [Equest-users] Glass Library Question<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1504832178680_76937"><br><div id="yiv5157423509"><style>#yiv5157423509 #yiv5157423509 --
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<div class="yiv5157423509MsoNormal" id="yui_3_16_0_ym19_1_1504832178680_76939"><span style="font-size:11.0pt;" id="yui_3_16_0_ym19_1_1504832178680_76938">Sounds like we could benefit from an updated DOE-2 window library based on Bruce’s observations.</span></div>
<div class="yiv5157423509MsoNormal" id="yui_3_16_0_ym19_1_1504832178680_76943"><span style="font-size:11.0pt;" id="yui_3_16_0_ym19_1_1504832178680_76942">As to the meaning of “e3=.4”, per Table 7 in the DOE-2 help entry for “WINDOW Library”:</span></div>
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<div class="yiv5157423509MsoNormal" style=""><span style="color:windowtext;">Low-E:</span></div>
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<div class="yiv5157423509MsoNormal" style=""><span style="color:windowtext;">A low emissivity metallic coating is applied in order to increase thermal IR reflectance. The coated surface is indicated by en = v, where n = 1
is the outside of the outer pane, n = 2 is the inside of the outer pane, etc., and v is the emissivity (see, for example, G-T-C = 2635, where e2 = 0.1 indicates a coating with an emissivity of 0.1 on surface #2).
</span></div>
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<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;">So, “e3=.4” describes an assembly with a low-e coating of emissivity 0.4 on the inside surface of the inner pane.</span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;">Syracuse Glass has a good list of considerations for low-e coatings and whether to have them on the #2 or #3 surface. Generally, coat the #3 surface if heat loss
is the primary consideration, and the #2 surface to limit solar heat gains.</span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;"><a rel="nofollow" shape="rect" target="_blank" href="http://www.syracuseglass.com/E-DOCS/Insulating%20Glass/EDOCS/LOW-E%20Coating%20Orientation.pdf">http://www.syracuseglass.com/E-DOCS/Insulating%20Glass/EDOCS/LOW-E%20Coating%20Orientation.pdf</a></span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;">Regards,</span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;">~Bill</span></div>
<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div>
<div class="yiv5157423509MsoNormal"><b><span style="font-size:10.0pt;">William Bishop, PE, BEMP, BEAP, CEM, LEED AP
</span></b><b><span style="font-size:10.0pt;">|</span></b><b><span style="font-size:10.0pt;"> Pathfinder Engineers & Architects LLP</span></b></div>
<table class="yiv5157423509MsoNormalTable yahoo-compose-table-card" style="width:394.8pt;border-collapse:collapse;" cellspacing="0" cellpadding="0" border="0" width="0"><tbody><tr style="min-height:13.45pt;"><td colspan="1" rowspan="1" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;min-height:13.45pt;" width="345">
<div class="yiv5157423509MsoNormal" style="line-height:105%;"><b><span style="font-size:9.0pt;line-height:105%;">Senior Energy Engineer</span></b></div>
</td><td colspan="1" rowspan="6" style="width:136.35pt;padding:0in 5.4pt 0in 5.4pt;min-height:13.45pt;" width="182">
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<img id="yiv5157423509Picture_x0020_2" src="cid:image004.jpg@01D32896.FC4F3090" data-id="d7b81afc-f5af-8cc4-2e71-b82c6a8297f9" height="39" border="0" width="46"></span></div>
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<div class="yiv5157423509MsoNormal" style="line-height:105%;"><span style="font-size:5.0pt;line-height:105%;"> </span></div>
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<div class="yiv5157423509MsoNormal" 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="font-size:11.0pt;line-height:105%;">
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<div class="yiv5157423509MsoNormal" style="line-height:105%;"><span style="font-size:11.0pt;line-height:105%;"><a rel="nofollow" shape="rect" ymailto="mailto:wbishop@pathfinder-ea.com" target="_blank" href="mailto:wbishop@pathfinder-ea.com"><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="font-size:11.0pt;line-height:105%;"><a rel="nofollow" shape="rect" target="_blank" href="http://www.pathfinder-ea.com/"><span style="font-size:9.0pt;line-height:105%;">www.pathfinder-ea.com</span></a></span></div>
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<div class="yiv5157423509MsoNormal" style="margin-top:3.0pt;line-height:105%;"><span style="font-size:11.0pt;line-height:105%;"><img id="yiv5157423509Picture_x0020_5" src="cid:image006.png@01D32896.FC4F3090" alt="http://png-5.findicons.com/files/icons/977/rrze/720/globe.png" data-id="0ffdab22-dc1f-dc02-cf77-83b5ca276fff" height="32" border="0" width="34"></span><span style="font-size:7.5pt;line-height:105%;">Carbon
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</td></tr></tbody></table>
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<div class="yiv5157423509MsoNormal"><span style="font-size:11.0pt;"> </span></div>
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<div class="yiv5157423509MsoNormal"><b><span style="font-size:11.0pt;">From:</span></b><span style="font-size:11.0pt;"> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Bruce Easterbrook via Equest-users<br clear="none">
<b>Sent:</b> Friday, September 08, 2017 11:19 AM<br clear="none">
<b>To:</b> Paul Diglio <paul.diglio@sbcglobal.net>; Equest-users <equest-users@lists.onebuilding.org><br clear="none">
<b>Subject:</b> Re: [Equest-users] Glass Library Question</span></div>
</div>
</div>
<div class="yiv5157423509MsoNormal"> </div>
<div class="yiv5157423509MsoNormal" style="margin-bottom:12.0pt;">Hi Paul,<br clear="none">
<a rel="nofollow" shape="rect" target="_blank" href="http://doe2.com/download/DOE-22/DOE22Vol4-Libraries_47.pdf">http://doe2.com/download/DOE-22/DOE22Vol4-Libraries_47.pdf</a>, go further down to page 27 or page 33 on the pdf numbering. The last paragraph explains that the coatings on the different
glass surfaces have complicated the library. I assume the e?.? is the new attempt to keep track of the different coatings and also which glass surface they are on.<br clear="none">
You are in the emissivity table. The table above is the reflective glazing and below is electrochromic glazing. With a thermopane there are 4 glass surfaces and the new windows can have all 3 of these types of coatings and more in a single unit.<br clear="none">
I suspect you can find the actual meanings here: <a rel="nofollow" shape="rect" target="_blank" href="https://windows.lbl.gov/software/window/6/W63_faq.html">
https://windows.lbl.gov/software/window/6/W63_faq.html</a> or <a rel="nofollow" shape="rect" target="_blank" href="https://windows.lbl.gov/">
https://windows.lbl.gov/</a><br clear="none">
Glass has got very complex in the last few years and those charts represent products sold in mid 2006. Our new code asks for much better performance than these glass types are capable of. The best of these represented a window ER of 18 to 20. Our code wanted
25. Some of the new windows are getting up to an ER of 30 for a thermopane. That huge bump is almost all due to coatings and their arrangement.<br clear="none">
Bruce Easterbrook P.Eng.<br clear="none">
Abode Engineering</div>
<div>
<div class="yiv5157423509MsoNormal">On 9/8/2017 8:59 AM, Paul Diglio via Equest-users wrote:</div>
</div>
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<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_12139">
<div class="yiv5157423509MsoNormal" style="background:white;"><span style="">In the DOE-2 glass library I am looking at the double low-e (e3=.4) clear product, glass type code 2600.</span></div>
</div>
<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_13415">
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<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_13414">
<div class="yiv5157423509MsoNormal" style="background:white;"><span style="">Does anyone know what the e3=.4 means? There are other products, such as type 2630 with e2=.1 with a much different assembly u-value.</span></div>
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<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_13489">
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<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_13488">
<div class="yiv5157423509MsoNormal" style="background:white;"><span style="">Thank you,</span></div>
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<div id="yiv5157423509yui_3_16_0_ym19_1_1504832178680_13405">
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<div class="yiv5157423509MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="">Paul Diglio<br clear="none">
87 Fairmont Avenue <br clear="none">
New Haven, CT 06513 <br clear="none">
<br clear="none">
</span></div>
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