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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Table 3 in chapter 18 of ASHRAE Fundamentals 2013 gives the space fraction and radiant fraction for several luminaire types.<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;color:#1F497D">Cory Duggin, PE, LEED AP BD+C, BEMP<o:p></o:p></span></b></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Principal/Energy Modeling Wizard</span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></i></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#006363">TLC Engineering for Architecture
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<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#333333">direct: </span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#555555"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1F497D">615-346-1939</span><span style="font-size:10.0pt;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"> Bldg-sim [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Nassim Jamali via Bldg-sim<br>
<b>Sent:</b> Thursday, August 25, 2016 10:05 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Energy Modelling - Lighting heat loads fractions<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">I'm assessing the risk of overheating in a meeting room that have indirect T5 lamps installed.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">I'm encoding that on DesignBuilder which determines the heat gains provided by lighting by specifying the convective and radiative part from the power density.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">The visible part is 18%, the radiant fraction is 42% and the convective part is 40% according to the software. I find that the figures put in DesignBuilder
are a bit exagerated.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">Therefore, I'm looking for a document that describes the fraction that goes into visible light, radiation and convection per type of lamps.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">Can someone help me by sharing this information?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black">Thanks in advance,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Regards,<br>
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<p class="MsoNormal"><strong><span style="font-family:"Verdana",sans-serif;color:black">Nassim Jamali</span></strong><span style="font-family:"Verdana",sans-serif;color:black"><br>
</span><strong><span style="font-family:"Verdana",sans-serif;color:#666666">Building Performance Consultant
</span></strong><b><span style="font-family:"Verdana",sans-serif;color:#666666"><br>
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</span></b><strong><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#666666">t</span></strong><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#666666"> +32 (0)2 468 11 58<b><br>
<strong><span style="font-family:"Verdana",sans-serif">f</span></strong></b> +32 (0)2 468 11 78
</span><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black"><br>
</span><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#666666">noordkustlaan
<span class="object">10, 1702 groot-bijgaarden, belgium</span></span><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="object"><span style="font-size:7.5pt;font-family:"Trebuchet MS",sans-serif;color:#666666"><a href="http://www.boydens.be" target="_blank"><span style="text-decoration:none"><img border="0" id="_x0000_i1025" src="http://www.boydens.biz/mailfooter/be-mailfooter-s.png"></span></a></span></span><span style="font-size:7.5pt;font-family:"Trebuchet MS",sans-serif;color:#666666">
</span><span class="object"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black"><a href="http://www.boydens.be" target="_blank"><span style="text-decoration:none"><img border="0" id="_x0000_i1026" src="http://www.boydens.biz/mailfooter/marketing-footer.png"></span></a></span></span><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:black"><o:p></o:p></span></p>
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