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</o:shapelayout></xml><![endif]--></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:#1F497D'>Ethen,<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'>With your LEED submission, include a supporting narrative with precise and consistent with use of the terms UFAD and thermal displacement ventilation (TDV). Not all UFAD systems achieve TDV throughout the zone and not all systems that do deliver air under the floor. The EDR simulation guidelines and the design briefs do a decent job of distinguishing these facts. The design briefs also pick up on the zone air distribution effectiveness (Table 6-2) of ASHRAE Standard 62. I strongly believe that designs and energy models should incorporate the impact of air distribution effectiveness. <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'>Good luck,<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><div><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#5F574F'>Paul Riemer, PE, LEED AP BD+C</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-family:"Verdana","sans-serif";color:#C00000'>DUNHAM</span></b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#C00000'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><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"'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Christopher Schaffner<br><b>Sent:</b> Wednesday, October 12, 2011 12:40 PM<br><b>To:</b> jai yadav; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] Modelling UFAD for LEED<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>That is the preferred way to do it for LEED.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>--<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Chris Schaffner, PE<o:p></o:p></p></div><div><p class=MsoNormal>LEED Fellow<o:p></o:p></p></div><div><p class=MsoNormal>Founder and Principal<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The Green Engineer, LLP<o:p></o:p></p></div><div><p class=MsoNormal>Sustainable Design Consulting<o:p></o:p></p></div><div><p class=MsoNormal>50 Beharrell Street<o:p></o:p></p></div><div><p class=MsoNormal>Concord, MA 01742<o:p></o:p></p></div><div><p class=MsoNormal>T: 978.369.8978<o:p></o:p></p></div><div><p class=MsoNormal>M:978.844.1464<o:p></o:p></p></div><div><p class=MsoNormal><a href="mailto:chris@greenengineer.com">chris@greenengineer.com</a><o:p></o:p></p></div><div><p class=MsoNormal><a href="http://www.greenengineer.com">www.greenengineer.com</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The Green Engineer, LLP is a Certified B Corporation<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>From: jai yadav <<a href="mailto:jaivardhany@yahoo.com">jaivardhany@yahoo.com</a>><br>Reply-To: jai yadav <<a href="mailto:jaivardhany@yahoo.com">jaivardhany@yahoo.com</a>><br>Date: Wed, 12 Oct 2011 18:05:31 +0530 (IST)<br>To: "<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a>" <<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a>><br>Subject: [Bldg-sim] Modelling UFAD for LEED<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><div><div><p class=MsoNormal>Dear Energy Simulators<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>I have to model Under Floor Air Distribution (UFAD) for one of LEED projects. I went through the document at the link <a href="http://www.energydesignresources.com/media/2654/EDR_DesignGuidelines_%20HVAC_Simulation.pdf">http://www.energydesignresources.com/media/2654/EDR_DesignGuidelines_%20HVAC_Simulation.pdf</a> to model UFAD in eQUEST. The major assumption in this method to model UFAD is to create a plenum zone, to model the effect of a thermally stratified zone above the occupied zone, and transfer a fraction of People (25%), Lighting (33%) and Equipment (33%) loads in that zone.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Is this method to model UFAD acceptable for simulations carried out to show LEED compliance? Has anyone else used this method before? Or is there any other method to model UFAD?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Your comments would be highly appreciated. Thanks in advance.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Regards<o:p></o:p></p></div><div><p class=MsoNormal>Ethen<o:p></o:p></p></div></div></div></div><p class=MsoNormal>_______________________________________________ Bldg-sim mailing list <a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a> To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a> <o:p></o:p></p></div></body></html>