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<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Patrick, Will, John and all</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
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<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Thank you all for the quick responses to my original post.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Based on your comments, I have a couple more questions that I hope someone may have insight into.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">It seems that due to the large process equipment energy usage for datacenters, others have experienced that showing significant energy reduction through HVAC
alone is difficult. Following from this, for the purposes of LEED it appears that is would be best to find some strategy to minimize process loads in the model or somehow show a process load reduction.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">1) For the project I am working on, we are starting off with 3 X 600RT CWH chillers + 2 X 600RT dual mode (CHW and Ice) chillers on Day 1, but with an additional
1 x 600RT CHW + 2 X 600RT dual mode units are planned for full future design cooling capacity. Correspondingly, the Server (process equipment) will be installed in stages as well.
</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Does anyone know what if there are any rules as to what point in project development the model should be based on? My original plan was to model at full design
capacity, but I am thinking now that it would be better to model Day 1 conditions if permissible to lower the denominator in the energy reduction calculation.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">2) The client is considering using Server Virtualization technology for the IT equipment. I understand that this is a much more efficient means of operating
server equipment and I am considering using this as a basis for showing process energy reduction based on a CIR I have come across (CIR 2441). The CIR was originally submitted for a remodelling project, so the process reduction would have been shown versus
the originally installed equipment. </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Does anyone have any thought or experience any with showing this type of process reduction for a LEED-NC project? I am imagining the baseline will be based
on servers without virtualization. I don’t really know enough about “Virtualization” at this stage to really quantify what energy reduction, if any, could be expected. Some long conversations with the IT designer are warranted, but would appreciate if any
one has any thoughts to share.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Again, any thoughts will be greatly appreciated.</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Thanks in advance,</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt">Shuichi</span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span lang="EN-GB" style="font-size:10.0pt"> </span></font></p>
<p class="MsoNormal" style="text-align:justify; text-justify:inter-ideograph; layout-grid-mode:char">
<b><font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray; font-weight:bold">Shuichi Hendrickson</span></font></b></p>
<p class="MsoNormal" style="text-align:justify; text-justify:inter-ideograph; layout-grid-mode:char">
<font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">Environmental Engineer, LEED AP</span></font></p>
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<font size="2" color="black" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial; color:black"><br>
</span></font><b><font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray; font-weight:bold">ERM Japan</span></font></b></p>
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<font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">The Landmark Tower
</span></font></p>
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<font size="2" color="gray" face="Book Antiqua"><span style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">Yokohama</span></font><font size="2" color="gray" face="Book Antiqua"><span style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">
19F</span></font></p>
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<font size="2" color="gray" face="Book Antiqua"><span style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">2-2-1-1, Minatomirai, Nishi-ku</span></font></p>
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<font size="2" color="gray" face="Book Antiqua"><span lang="DE" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">Yokohama, 220-8119, Japan</span></font><span lang="DE"></span></p>
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<font size="2" color="black" face="Arial"><span lang="DE" style="font-size:10.0pt; font-family:Arial; color:black"><br>
</span></font><font size="2" color="gray" face="Book Antiqua"><span lang="DE" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">T:</span></font><font size="2" color="gray" face="Book Antiqua"><span lang="PT-BR" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray"><a href="tel:%2B81%280%2945-640-3780" target="_blank"><span lang="DE">+81(0)45-640-3780</span></a></span></font><font size="2" color="gray" face="Book Antiqua"><span lang="DE" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">
<br>
F:</span></font><font size="2" color="gray" face="Book Antiqua"><span lang="PT-BR" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray"><a href="tel:%2B81%280%2945-640-3781" target="_blank"><span lang="DE">+81(0)45-640-3781</span></a></span></font><font size="2" color="gray" face="Book Antiqua"><span lang="DE" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray"><br>
</span></font><font size="2" color="black" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial; 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="DE">shuichi.hendrickson@erm.com</span></a></span></font><font size="2" color="black" face="Arial"><span lang="DE" style="font-size:10.0pt; font-family:Arial; color:black">
<br>
</span></font><font size="2" color="black" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial; color:black"><a href="http://www.erm.com/" target="_blank" title="http://www.erm.com/"><span lang="DE">www.erm.com</span></a></span></font><font size="2" color="black" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial; color:black">
</span></font><span lang="DE"></span></p>
<p class="MsoNormal" style="layout-grid-mode:char"><i><font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray; font-style:italic">Ranked No1 All-Environmental Firm: ENR Magazine (2004,
2005, 2006, 2007)<br>
Environmental Adviser of the Year: Acquisitions Monthly (2005, 2006, 2008)</span></font></i></p>
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<font size="1" color="teal" face="Webdings"><span lang="EN-US" style="font-size:8.0pt; font-family:Webdings; color:teal">P</span></font><font size="1" color="teal" face="ＭＳ ゴシック"><span lang="EN-US" style="font-size:8.0pt; font-family:"MS Gothic"; color:teal">
</span></font><font size="1" color="teal" face="Arial"><span lang="EN-US" style="font-size:8.0pt; font-family:Arial; color:teal">Please consider the environment before printing this email</span></font></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span lang="EN-US" style="font-size:10.0pt; font-family:Tahoma; font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span lang="EN-US" style="font-size:10.0pt; font-family:Tahoma"> Will
Mak [mailto:wmak@epsteinglobal.com] <br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, June 17, 2011 11:15 PM<br>
<b><span style="font-weight:bold">To:</span></b> Patrick Keeney; Shuichi Hendrickson<br>
<b><span style="font-weight:bold">Cc:</span></b> equest-users@lists.onebuilding.org<br>
<b><span style="font-weight:bold">Subject:</span></b> RE: [Equest-users] Data Center Modelling and Ice Storage</span></font><span lang="EN-US"></span></p>
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<p class="MsoNormal"><font size="2" color="#1f497d" face="Segoe UI"><span lang="EN-US" style="font-size:10.0pt; font-family:"Segoe UI"; 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.
</span></font></p>
<p class="MsoNormal"><font size="2" color="#1f497d" face="Segoe UI"><span lang="EN-US" style="font-size:10.0pt; font-family:"Segoe UI"; color:#1F497D"> </span></font></p>
<p class="MsoNormal"><b><font size="3" color="#c75b12" face="Segoe UI"><span lang="EN-US" style="font-size:12.0pt; font-family:"Segoe UI"; color:#C75B12; font-weight:bold">William Mak, LEED AP BD+C</span></font></b><font size="1" color="#1f497d" face="Segoe UI"><span lang="EN-US" style="font-size:9.0pt; font-family:"Segoe UI"; color:#1F497D"><br>
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<div style="border:none; border-top:solid #B5C4DF 1.0pt; padding:3.0pt 0mm 0mm 0mm">
<p class="MsoNormal"><b><font size="2" face="Tahoma"><span lang="EN-US" style="font-size:10.0pt; font-family:Tahoma; font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span lang="EN-US" style="font-size:10.0pt; font-family:Tahoma"> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style="font-weight:bold">On Behalf Of
</span></b>Patrick Keeney<br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, June 17, 2011 9:06 AM<br>
<b><span style="font-weight:bold">To:</span></b> Shuichi Hendrickson<br>
<b><span style="font-weight:bold">Cc:</span></b> equest-users@lists.onebuilding.org<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [Equest-users] Data Center Modelling and Ice Storage</span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span lang="EN-US" style="font-size:12.0pt">Hi Shuichi,</span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span lang="EN-US" style="font-size:12.0pt">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.
</span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span lang="EN-US" style="font-size:12.0pt"><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></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span lang="EN-US" style="font-size:12.0pt">Best, Patrick</span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span lang="EN-US" style="font-size:12.0pt">On Fri, Jun 17, 2011 at 3:07 AM, Shuichi Hendrickson <<a href="mailto:Shuichi.Hendrickson@erm.com">Shuichi.Hendrickson@erm.com</a>> wrote:</span></font></p>
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<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">Hello all,</span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">Does anyone have a better suggestion for load proportioning for a datacenter? Am I over complicating this?</span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">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></font></p>
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<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial"> </span></font></p>
<p class="MsoNormal" style=""><font size="2" face="Arial"><span lang="EN-GB" style="font-size:10.0pt; font-family:Arial">Thank you in advance and regards,</span></font></p>
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<b><font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray; font-weight:bold">Shuichi Hendrickson</span></font></b></p>
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<font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">Environmental Engineer, LEED AP</span></font></p>
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<font size="2" color="gray" face="Book Antiqua"><span lang="PT-BR" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray">2-2-1-1, Minatomirai, Nishi-ku</span></font><span lang="PT-BR"></span></p>
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F:<a href="tel:%2B81%280%2945-640-3781" target="_blank">+81(0)45-640-3781</a><br>
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mailto:first.lastnamemasashi.hishiyama@erm.com
mailto:first.lastname@erm.com"><span lang="PT-BR">shuichi.hendrickson@erm.com</span></a></span></font><font size="2" color="black" face="Arial"><span lang="PT-BR" style="font-size:10.0pt; font-family:Arial; color:black">
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<p class="MsoNormal" style="layout-grid-mode:char"><i><font size="2" color="gray" face="Book Antiqua"><span lang="EN-GB" style="font-size:10.0pt; font-family:"Book Antiqua"; color:gray; font-style:italic">Ranked No1 All-Environmental Firm: ENR Magazine (2004,
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