<div>I've used this guidebook in the past (see attached) and it has yielded reasonable results to depict the potential energy savings with UFAD systems & stratified loads. Feel free to contact me if you would like more detail about my experiences simulating UFAD & TD systems.</div>
<div> </div>
<div>pasha<br><br></div>
<div class="gmail_quote">On Tue, Jun 8, 2010 at 7:15 AM, Bishop, Bill <span dir="ltr"><<a href="mailto:wbishop@pathfinder-ea.com">wbishop@pathfinder-ea.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Jonathon,<br><br>This Design Guide has information on how to model UFAD using eQUEST:<br><a href="http://www.archenergy.com/ieq-k12/Public/Proj2_Deliverables/D2.9c_FinalDVDesignGuide_2006-0630.pdf" target="_blank">http://www.archenergy.com/ieq-k12/Public/Proj2_Deliverables/D2.9c_FinalDVDesignGuide_2006-0630.pdf</a><br>
<br>Regards,<br>Bill<br><br>William Bishop, EIT, BEMP, LEEDŽ AP | Pathfinder Engineers & Architects LLP<br>Mechanical Engineer<br><br>134 South Fitzhugh Street<br>Rochester, NY 14608<br>T: (585) 325-6004 Ext. 114<br>F: (585) 325-6005<br>
<a href="mailto:wbishop@pathfinder-ea.com">wbishop@pathfinder-ea.com</a><br><a href="http://www.pathfinder-ea.com/" target="_blank">www.pathfinder-ea.com</a><br>
<div class="im"><br>-----Original Message-----<br>From: <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] On Behalf Of Andrew Phelps<br>
Sent: Tuesday, June 08, 2010 8:36 AM<br>To: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br></div>
<div>
<div></div>
<div class="h5">Subject: Re: [Equest-users] Underfloor Air Distribution Supply Air<br><br>Jon:<br><br>If I understand your email/system description correctly, isn't your underfloor system just a series fan powered box, with a zone fan to mix to 65F?<br>
<br>I do agree with you that your idea to setup a different AHU for the underfloor system by making reasonable assumptions for fan energy (and make sure you change the other AHU as well) is a good one.<br><br>However, you might want to consider how the UFAD system is heated. This could be an issue especially if your system gets 55F constantly, or if the supply air to be mixed is varied based on a reset schedule. I know that we don't really think about it much, but heating energy can be tricky, especially in UFAD systems.<br>
<br><br> Andy Phelps, PE - Mechanical Engineer - Larson Binkley, Inc.<br> 6363 College Blvd., Ste 400 Overland Park, KS 66211 | (T-direct) 913-383-5861 |(T-main) 913-383-2621 |(F) 913-383-2831 | <a href="mailto:andrew.phelps@larsonbinkley.com">andrew.phelps@larsonbinkley.com</a><br>
<br><br><br>Message: 6<br>Date: Mon, 7 Jun 2010 15:06:00 -0700<br>From: Jon Pfantz <<a href="mailto:gatorlord@gmail.com">gatorlord@gmail.com</a>><br>To: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Subject: [Equest-users] Underfloor Air Distribution Supply Air<br> Temperature<br>Message-ID:<br> <<a href="mailto:AANLkTikmr8olZSxB0qtgKmNtjspATCVj5alDCY4kl4b8@mail.gmail.com">AANLkTikmr8olZSxB0qtgKmNtjspATCVj5alDCY4kl4b8@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="windows-1252"<br><br>Hello all,<br><br>Is anybody aware of a method of modeling an underfloor air distribution system with different supply air temperatures? My air handling unit partially serves an overhead system with 55 degree SAT and partially serves an underfloor system which mixes the 55 degree air with some return air to achieve 65 degree SAT. I?m assuming the best way to model this would be to create two separate systems, one for the overhead and one for the underfloor, however I?m concerned that I won?t be able to achieve realistic system performance.<br>
<br>Thanks,<br><br>Jonathon<br><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">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><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">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><br>
</div></div></blockquote></div><br>