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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:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'>Side note that you may want to keep in mind that’s been brought up here is how you model the data center process loads. If the loads are too large, you may have a difficult time meeting the prerequisite. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-family:"Segoe UI","sans-serif";color:#C75B12'>William Mak, LEED AP BD+C</span></b><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'>Mechanical Design Engineer</span><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";color:black'><br></span><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><br></span><b><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#C75B12'>EPSTEIN</span></b><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'>Architecture<br></span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:#C75B12'>Interiors</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'><br>Engineering<br></span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:#C75B12'>Construction</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'>Sustainability<br><br>600 West Fulton Street<br>Chicago, Illinois 60661-1259<br><br>D: (312) 429-8116<br>F: (312) 429-8800</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'>E:</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:#0070C0'> <a href="mailto:wmak@epsteinglobal.com">wmak@epsteinglobal.com</a></span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'><br>W:</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:#C75B12'> <a href="http://www.epsteinglobal.com/"><span style='color:#C75B12'>www.epsteinglobal.com</span></a></span><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";color:black'><br><br></span><span style='font-size:10.0pt;font-family:Webdings;color:#00B050'>þ</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'> Epstein is a firm believer in sustainability. We ask that you please consider the environment before printing this e-mail.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><o:p> </o:p></span></p><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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Patrick Keeney<br><b>Sent:</b> Friday, June 17, 2011 9:06 AM<br><b>To:</b> Shuichi Hendrickson<br><b>Cc:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] Data Center Modelling and Ice Storage<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi Shuichi,<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Below is a link to an additional source from a previous post that helps explain how to model UFAD and/or displacement ventilation. Their method is very similar to yours, in that you split the equipment loads between the plenum and the space. In particular, there is a section which explains pretty clearly how to model UFAD in eQUEST. This may be repeat info to you, but it may be able to help. <o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal><a href="http://www.archenergy.com/ieq-k12/Public/Proj2_Deliverables/D2.9c_FinalDVDesignGuide_2006-0630.pdf">http://www.archenergy.com/ieq-k12/Public/Proj2_Deliverables/D2.9c_FinalDVDesignGuide_2006-0630.pdf</a><o:p></o:p></p></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>Best, Patrick<o:p></o:p></p></div><div><p class=MsoNormal><br><br> <o:p></o:p></p></div><div><p class=MsoNormal>On Fri, Jun 17, 2011 at 3:07 AM, Shuichi Hendrickson <<a href="mailto:Shuichi.Hendrickson@erm.com">Shuichi.Hendrickson@erm.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello all,</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I am attempting to model a data center in eQuest for LEED. This will be a first attempt at modelling a data center for me and I am in hopes someone could provide some sage advice on the subject. </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My understanding is that the data center will be a standard hot/cold aisle configuration with underfloor cooling (UFAD). The CRACs are on CHW and the CHW plant consists of multiple chillers, as well as, dedicated chillers for ice storage.</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Recognizing that eQuest doesn’t consider fluid air dynamics or temperature stratification resultant from UFAD, I am considering using the UFAD modelling guidance in the EDR Design Guidelines: HVAC Simulation Guidance (<a href="http://www.energydesignresources.com/resources/publications/design-guidelines/design-guidelines-hvac-simulation-guidelines.aspx" target="_blank">http://www.energydesignresources.com/resources/publications/design-guidelines/design-guidelines-hvac-simulation-guidelines.aspx</a>)</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This document addresses UFAD, but not specific to data center or hot/cold aisle. What Ive gotten out of the guidance is that for comfort UFAD applications, the upper portion of a room (non occupied ) space is defined as plenum and the internal loadings for the room are apportioned between the occupied zone and plenum. It seems to me that this method could be appropriate for hot/cold aisle scenarios as well, with the hot aisle as the plenum and cold as space. From the guidance equipments loads are suggested to be apportioned 67% space 33% plenum for comfort applications. </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My understanding of hot/cold aisle configurations is that cold air is supplied on the front side of the server racks, pulled through the racks by the server internal cooling fans, and exhausted in to the hot aisle. Following from this logic it seems to me that the equip load should apportioned mostly to the plenum (hot aisle). </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Does anyone have a better suggestion for load proportioning for a datacenter? Am I over complicating this?</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My next challenge is modelling the Ice storage. I have 6 chillers of which 2 are dual mode CHW and Ice making. My guess is that I will have to model the dual mode units as 4 chillers (2 for CHW and 2 for ice) because of the different efficiencies and supply temps, while somehow using to the equip controls to make sure the chillers are not operating simultaneously. </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This will be another first attempt for me. If anyone knows of any useful modelling guidance docs or has any advice on this it would be highly appreciated.</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thank you in advance and regards,</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>Shuichi Hendrickson</span></b><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=EN-GB style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>Environmental Engineer, LEED AP</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><br></span><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>ERM Japan</span></b><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=EN-GB style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>The Landmark Tower </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=EN-AU style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>Yokohama 19F</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=EN-AU style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>2-2-1-1, Minatomirai, Nish</span><span lang=PT-BR style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>i-ku</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=PT-BR style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>Yokohama, 220-8119, Japan</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span lang=PT-BR style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><br></span><span lang=PT-BR style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>T:<a href="tel:%2B81%280%2945-640-3780" target="_blank">+81(0)45-640-3780</a> <br>F:<a href="tel:%2B81%280%2945-640-3781" target="_blank">+81(0)45-640-3781</a><br></span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><a href="mailto:shuichi.hendrickson@erm.com" target="_blank" title="mailto:shuichi.hendrickson@erm.com
mailto:first.lastnamemasashi.hishiyama@erm.com
mailto:first.lastname@erm.com"><span lang=PT-BR>shuichi.hendrickson@erm.com</span></a></span><span lang=PT-BR style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> <br></span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><a href="http://www.erm.com/" target="_blank" title="http://www.erm.com/"><span lang=PT-BR>www.erm.com</span></a> </span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;layout-grid-mode:char'><i><span lang=EN-GB style='font-size:10.0pt;font-family:"Book Antiqua","serif";color:gray'>Ranked No1 All-Environmental Firm: ENR Magazine (2004, 2005, 2006, 2007)<br>Environmental Adviser of the Year: Acquisitions Monthly (2005, 2006, 2008)</span></i><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;layout-grid-mode:char'><span style='font-size:8.0pt;font-family:Webdings;color:teal'>P</span><span style='font-size:8.0pt;font-family:"MS Gothic","serif";color:teal'> </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:teal'>Please consider the environment before printing this email</span><span lang=EN-AU><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> </span><span lang=EN-AU><o:p></o:p></span></p></div><p class=MsoNormal><span lang=EN-AU><o:p> </o:p></span></p><div class=MsoNormal align=center style='text-align:center'><span lang=EN-AU><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><span lang=EN-AU style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'><br>This electronic mail message may contain information which is (a) LEGALLY PRIVILEGED, PROPRIETARY IN NATURE, OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE, and (b) intended only for the use of the Addressee (s) names herein. If you are not the Addressee (s), or the person responsible for delivering this to the Addressee (s), you are hereby notified that reading, copying, or distributing this message is prohibited. If you have received this electronic mail message in error, please contact us immediately and take the steps necessary to delete the message completely from your computer system. Thank you.<br><br>Please visit ERM's web site: <a href="http://www.erm.com/" target="_blank">http://www.erm.com</a></span><span lang=EN-AU><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><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><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><br>-- <br>Patrick J Keeney<br>MArch-MSSD Candidate<br>410-299-5627<o:p></o:p></p></div></body></html>