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<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Jeff is spot on. It is a little more tricky if you have dimmable daylight controls as eQUEST only models dimming for fluorescent lights
with ballasts whose performance is not as linear as LEDs when dimmed.<o:p></o:p></span></a></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 usually just count the energy savings from dimming LED daylight controls as conservative rather than find a more accurate way of modeling it.<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">Has anyone employed a more accurate way of modeling this? Are you willing to share?<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">Thanks in advance!<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="color:#1F497D"><table border="0" cellspacing="0" cellpadding="0" width="100%"><tr><!--MAKE-SURE-TO-SET-THE-TD-WIDTH--><td width="80" style="padding-right: 13px;" valign="top"><a href="http://www.archnexus.com"><img src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-logo-80x99.png" nosend="1" border="0" width="80" height="99" alt='ARCH | NEXUS'></a></td><td width="1" valign="top" style="border-left: 1px #009AD9 solid;"> </td><td style="padding-left: 9px;"><table border="0" cellspacing="0" cellpadding="0" width="100%"><tr><td align="left" colspan="2"><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 11pt; font-weight: normal">DAVID W. GRIFFIN II</span></td></tr><tr><td style="padding-top: 6px;" align="left" colspan="2"><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 7.5pt;">BEMP</span><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 7.5pt;"><br>ENERGY ANALYST</span></td></tr><tr><td align="left" style="padding-top: 6px; padding-bottom: 6px;" colspan="2"><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 7.5pt;"> 2505 E Parleys Way<br>Salt Lake City, UT 84109 </span></td></tr><tr><td align="left" width="100%" style="padding-left: 3px; white-space: nowrap;"><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 7.5pt;"><b>Office</b> 801.924.5028 </span></td></tr><span style="color: #52616E; font-family: 'Verdana', sans-serif; font-size: 7.5pt;"></span><tr><td align="left" style="padding-top: 6px; padding-bottom: 0px; white-space: nowrap;" colspan="2"><span style="color: #52616E; font-size: 7.5pt; font-weight: normal; font-family: 'Verdana', sans-serif;"><a style="text-decoration: none; color: #52616E" href="http://www.archnexus.com"><font color="#52616E">archnexus.com</font></a></span></td></tr><tr><td align="left" style="padding-top: 6px; padding-bottom: 0px; white-space: nowrap;" colspan="2"><a href="https://twitter.com/arch_nexus"><img src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-tw-sharp-L-29x22.png" nosend="1" border="0" width="29" height="22" alt="Twitter"></a><a href="https://www.facebook.com/pages/Architectural-Nexus/179588705397563?ref=ts&fref=ts"><img src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-fb-sharp-L-29x22.png" nosend="1" border="0" width="29" height="22" alt="Facebook"></a><a href="https://www.youtube.com/channel/UCYRPWKF-yp-AUiI8ia2XfKw?feature=mhee"><img src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-yt-sharp-L-29x22.png" nosend="1" border="0" width="29" height="22" alt="Youtube"></a><a href="https://www.linkedin.com/company/architectural-nexus"><img src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-li-sharp-L-29x22.png" nosend="1" border="0" width="29" height="22" alt="LinkedIn"></a></td></tr></table></td></tr></table><style> a {color: #009AD9;} </style></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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<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"> Haberl, Jeff [mailto:jhaberl@tamu.edu]
<br>
<b>Sent:</b> Thursday, November 05, 2015 2:20 PM<br>
<b>To:</b> Fakeha Sehar; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] LED lighting<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hello Fakeha:<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">Simulations programs like eQuest and DOE-2 don’t actually model the lighting, but rather model the heat gain from the lighting.
<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">Therefore, all you really need is the electricity use of the intended lighting to enter into the input file, in one of several ways (i.e., Watts or Watt/ft2),
then perhaps enter what type of light it is to estimate where the heat from the light is going.
<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">Jeff<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>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:blue">8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=') 8=) 8=?<br>
Jeff S. Haberl, Ph.D.,P.E.inactive,FASHRAE,FIBPSA,......<a href="mailto:........jhaberl@tamu.edu"><span style="color:blue">jhaberl@tamu.edu</span></a><br>
Professor........................................................................Office Ph: 979-845-6507<br>
Department of Architecture............................................Lab Ph:979-845-6065<br>
Energy Systems Laboratory...........................................FAX: 979-862-2457<br>
Texas A&M University...................................................77843-3581<br>
College Station, Texas, USA, 77843..............................URL:www.esl.tamu.edu<br>
8=/ 8=) :=) 8=) ;=) 8=) 8=() 8=) :=) 8=) 8=! 8=) 8=? 8=) 8=0<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>
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<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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Fakeha Sehar<br>
<b>Sent:</b> Thursday, November 5, 2015 3:00 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] LED lighting<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">I want to model LED lighting in eQuest. Any idea how?<o:p></o:p></span></p>
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