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--></style></head><body 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:#002060">Further to that approach: there exists an option under switchable glazing to toggle glass properties via OA temperature.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">I personally remain unconvinced of the science/marketing behind the “effective” overall U-value brought about by a reflective film. On a conceptual level, I understand how taping aluminum foil to the outside of a normal pane of glass, or replacing your glazing with a mirror, would help bounce back radiative heat losses. I remain skeptical of the notion this can be equated to an overall effect on the <i>conductive</i> heat gains/losses through a typical window. </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">As always, use your best judgement – your simulation outputs are only as strong as your inputs!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">~Nick</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><div><p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#002060">NICK CATON, P.E.</span></b><span style="font-size:11.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><br></span><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782">Owner</span></b></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782"> </span></b></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782">Caton Energy Consulting</span></b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black"><br></span><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> 306 N Ferrel</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> Olathe, KS 66061</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> office: 785.410.3317</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782"><a href="www.catonenergy.com"><span style="color:#561782">www.catonenergy.com</span></a></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"></span></p></div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </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">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>David Berty<br><b>Sent:</b> Thursday, July 30, 2015 11:32 AM<br><b>To:</b> Hari Jammulamadaka; John Aulbach<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] Modelling Heated Windows in eQuest</span></p></div></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">It seems to me that the easiest manipulation would be to modify the windows U-value. You are in essence saying that all or a portion of the heat transfer of cold air in the winter would be cancelled by the coating. Then you could add a false plug load to account for the electricity consumed.</span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">David Berty, P.E.</span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Baseline Energy Consulting</span></p></div><div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">317.220.9272</span></p></div><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"> </span></p><div id="htc_header"><p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">----- Reply message -----<br>From: "Hari Jammulamadaka" <<a href="mailto:hari.swarup@gmail.com">hari.swarup@gmail.com</a>><br>To: "John Aulbach" <<a href="mailto:jra_sac@yahoo.com">jra_sac@yahoo.com</a>><br>Cc: "<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>" <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br>Subject: [Equest-users] Modelling Heated Windows in eQuest<br>Date: Wed, Jul 29, 2015 10:22 PM</span></p></div></div><p class="MsoNormal"> </p><div><p>Hello all, </p><p>Thank you so much for the valuable input. The windows wouldn't consume more than 150W. They have some special coatings to reflect the heat off of the inner surface of the outer window, thereby keeping most of the heat within, and thus effecting having a much lower U value than passive windows (that's what the manufacturer claims). I intend to model that, and then compare that with an experimental setup to see what is really happening. </p><p>I'll look through the older treads attached to the mail, and see how baseboard heating works for my setup.</p><p>Thank you all again! </p><p>Sincerely, <br>Hari </p><div><p class="MsoNormal">On Jul 29, 2015 11:11 AM, "John Aulbach" <<a href="mailto:jra_sac@yahoo.com">jra_sac@yahoo.com</a>> wrote:</p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Hari:</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Could you possibly use Baseboard heating to simulate the heated windows? Baseboards are usually under windows anyway to mitigate transmission loads. Not sure how you measure the kBtu/kW of your windows, but you can translate into the same heating capacity.</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">See if the offered eQuest controls for Baseboard satisfy your requirements on the windows.</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><h5 style="background:white"><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-CTRL</span></h5><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Takes a code-word that specifies the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">control</span><span style="font-family:"Verdana",sans-serif;color:black"> method for </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboard</span><span style="font-family:"Verdana",sans-serif;color:black"> heating in the zone. Defines the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">control</span><span style="font-family:"Verdana",sans-serif;color:black"> method as THERMOSTATIC using HEAT-TEMP-SCH as the setpoints, or OUTDOOR-RESET to allow </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-SCH reset </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">control</span><span style="font-family:"Verdana",sans-serif;color:black">. This is a zone-level keyword for PLENUM-type zones; it allows "</span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboards</span><span style="font-family:"Verdana",sans-serif;color:black">" to be placed in plenums and allows the simulation of outside or space temperature </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlled</span><span style="font-family:"Verdana",sans-serif;color:black"> heaters in the return air space. The plenum heater is activated based on outside air temperature and reset schedule when it is outside </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlled</span><span style="font-family:"Verdana",sans-serif;color:black">. When it is space temperature </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlled</span><span style="font-family:"Verdana",sans-serif;color:black">, and if the interaction with the return air does not result in a temperature above the scheduled value, the heater is turned on. In either case, the source of energy input to the heater is defined by the specified or defaulted value for </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-SOURCE. See also </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-CTRL, THROTTLING-RANGE and </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-RATING. Input for this keyword is the code-word that specifies the method used for </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlling</span><span style="font-family:"Verdana",sans-serif;color:black"> the output of the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboard</span><span style="font-family:"Verdana",sans-serif;color:black"> heating element in the zone.</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">THERMOSTATIC </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">Baseboard</span><span style="font-family:"Verdana",sans-serif;color:black"> heating is </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlled</span><span style="font-family:"Verdana",sans-serif;color:black"> by a thermostat located in the zone. The program assumes that the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboards</span><span style="font-family:"Verdana",sans-serif;color:black"> add heat as required, up to their maximum capacity, to maintain zone air temperature within the heating throttling range.If there is a heating load the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboards</span><span style="font-family:"Verdana",sans-serif;color:black"> are sequenced on first. If the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboards</span><span style="font-family:"Verdana",sans-serif;color:black"> cannot meet the entire heating load, heating from the zone's air system, if available, will then be activated.</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">OUTDOOR-RESET </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">Baseboard</span><span style="font-family:"Verdana",sans-serif;color:black"> heating is </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">controlled</span><span style="font-family:"Verdana",sans-serif;color:black"> by a thermostat located outside the building. In this case the program assumes that the </span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">baseboard</span><span style="font-family:"Verdana",sans-serif;color:black"> heating output increases linearly as the outside air temperature decreases. The linear function and the operating period are defined by SYSTEM:</span><span style="font-family:"Verdana",sans-serif;color:white;background:#3399ff">BASEBOARD</span><span style="font-family:"Verdana",sans-serif;color:black">-SCH.</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">John R. Aulbach, PE</span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Los Angeles Ca</span></p></div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p><div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On Wednesday, July 29, 2015 6:49 AM, Hari Jammulamadaka <<a href="mailto:hari.swarup@gmail.com" target="_blank">hari.swarup@gmail.com</a>> wrote:</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p><div><div><div><div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Hello,</span></p></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black">I am trying to model a building with heated windows (windows with heating elements). The windows are not meant for comfort heating of the building. Just localized heating for improving the comfort conditions in the building. I have looked all over and couldn't find a way to model them. Can someone suggest how I could go about this in eQuest?</span></p></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Thank you.</span></p></div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Sincerely,<br clear="all"></span></p><div><div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Hari<br><br><br>"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover." --Mark Twain</span></p></div></div></div></div></div></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black"><br>_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG" target="_blank">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><br><br></span></p></div></div></div></div></div></div></blockquote></div></div></div></body></html>