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<font size="+1"> To be honest I have never done an exceptional
calculation either for 90.1. I have done hundreds of business
cases though. It is all the same. You use a sound engineering
argument you develop using eQuest to show the money people it is
worth their while to put up the cash. Any bonus you get from LEED
is just gravy in reality. What really matters is savings per year
x 30 years and how fast they can recover the extra money spent.
They will not look at anything over 10 years payback. 5 to ten you
will have to be convincing, under 5 is easy. I'm not sure what
you mean by CIR. Server Virtualization is starting to be used but
you have to watch out for fads and smooth talking salesmen. I
suggest you get more information on how it works and try to model
it. Your baseline will still be a standard server and you can
start creating your model. You are lucky to have a system already
operating to compare your model to, it will help with validation
of your arguments and your model.<br>
I have never done a data centre either, but it is just a
variation of a HVAC problem. There have been several good
articles written in the ASHRAE Journal on data centres. I suggest
you google them and take a look. One had some nice finite element
analysis of the heat flows off server banks and their solutions to
deal with the concentrated heat. One note of caution, even
standard servers are causing heating problems, further densifying
the heat may lead to more problems removing the heat with your
HVAC system. Don't forget technicians have to get in to service
the equipment and their comfort will be the limiting factor on
what you can do. There is also sound reasons to build a data
centre in Seattle and not Dallas. Barges in the ocean have been
considered as well to use water cooling.<br>
I am pretty good with eQuest though and have found a hour or
two thinking about how you are going to model the system and
keeping it flexible will save you a lot of time in the long run.
I do a lot of custom zoning initially and break down a building
into smaller pieces, auto-size and start looking at what unit
sizes are available off the shelf and how the zones work out. You
can start to combine zones onto systems and work out optimal
equipment sizes to match the increase in capacity that is planned.<br>
Bruce Easterbrook P.Eng.<br>
Abode Engineering<br>
<br>
</font> <br>
On 21/06/2011 03:02 AM, Shuichi Hendrickson wrote:
<blockquote
cite="mid:7F375B16C5455542AC9B6247C74FDB86035011@grpandmbx01.mail.erm55.com"
type="cite">
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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Bruce
and all,</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Thanks
for your input below, I will definitely take breaking out
server space into additional zones per expansion phase
into consideration.</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Regarding
process energy, my understanding is that there is a
mechanism for showing process energy reduction via the
exceptional calculation method per ASHRAE 90.1 ( See
LEED-NC 2009 EAp2 pg 238 paragraph 2 and EAc1 p258 2<sup>nd</sup>
to last paragraph of Option 1). Admittedly, I have never
used an exceptional calculation to show process energy
production, but it seems that it is possible. As mentioned
in my second post, I came across a CIR that approved using
Server Virtualization as means to show process reduction
for a data center (Copied Below). We have submitted a CIR
to confirm that this would be possible solution for the
project, but have not received the response yet. </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">The
CIR is for an existing data center so the baseline would
have been existing equipment. In my case, I am operating
under the premise that standard servers for the baseline
would not adopt Virtualization. Though, to honest, I don’t
know if Virtualization for a new datacenter would actually
save as much energy as claimed below. I think an argument
could be made that Virtualization allows for higher
performance machines that use more energy to being packed
into the same amount of space. The energy reduction would
be realized at part load when a single “Virtualized
server” could support the tasks of several, allowing those
units to be turned off. I don’t know enough about servers
to comment much beyond this at this time.
</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">It
sounds like you do a fair bit of datacenter modelling, so
perhaps the above could be of value to your projects as
well.
</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">I
would appreciate if anyone has any experience to share or
comments on using exceptional calculations for process
energy reductions.</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">CIR
2441</span></font></p>
<p class="MsoNormal" style="margin-left: 21.75pt;"><font
size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);"> </span></font><font size="2"
color="#5f6264" face="Arial"><span style="font-size: 11pt;
font-family: Arial; color: rgb(95, 98, 100);">Ruling
</span></font><font size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);">[
<input src="https://www.usgbc.org/images/LI/Minus.GIF"
name="ctlLISearch$rptResults$ctl00$Image2" type="image">
]
</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal" style="margin-left: 21.75pt;"><font
size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);">The applicant may use the Exceptional
Calculation Method to take credit for any energy savings
available from the server virtualization technology. Be
sure to include as supporting documentation under EAc1 all
assumptions made in the calculations, detailed data, any
actual measurements taken to support the savings claims
and any other pertinent information. Please note that the
actual amount of credit will be determined by the review
team at the time of the review.</span></font></p>
<p class="MsoNormal" style="margin-left: 6.7pt; text-align:
center;" align="center">
<font size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);"> </span></font></p>
<p class="MsoNormal" style="margin-left: 21.75pt;"><a
moz-do-not-send="true" name="OLE_LINK1"></a><a
moz-do-not-send="true" name="OLE_LINK2"><font size="2"
color="#5f6264" face="Arial"><span style="font-size: 11pt;
font-family: Arial; color: rgb(95, 98, 100);"> </span></font></a><font
size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);">Inquiry
</span></font><font size="2" color="#5f6264" face="Arial"><span
style="font-size: 11pt; font-family: Arial; color: rgb(95,
98, 100);">[
<input src="https://www.usgbc.org/images/LI/Minus.GIF"
name="ctlLISearch$rptResults$ctl00$Image2" type="image">
]
</span></font></p>
<div align="center">
<table class="MsoNormalTable" border="0" cellpadding="0">
<tbody>
<tr>
<td style="padding: 0mm 16.75pt 0mm 0mm;">
<p class="MsoNormal" style="text-align: center;"
align="center"><font size="2" color="#5f6264"
face="Arial"><span style="font-size: 11pt;
font-family: Arial; color: rgb(95, 98, 100);"> </span></font></p>
</td>
<td style="padding: 0mm 16.75pt 0mm 0mm;">
<p class="MsoNormal"><font size="2" color="#5f6264"
face="Arial"><span style="font-size: 11pt;
font-family: Arial; color: rgb(95, 98, 100);">This
project is a remodeling of an existing office
building that will include the addition of a
Data Center. The Data Center will make extensive
use of server virtualization to save energy,
space and money. Server virtualization is the
technique of replacing multiple servers with one
server running multiple "virtual servers" on one
larger, high performance server. In their
existing Data Center, our client runs an average
of 8 virtual servers on each high-performance
server. Although the high performance server
uses more energy than any one of the low to
medium performance servers that it replaces,
this results in a net energy savings of between
60-75%. Our question is: Under EAc1, Option 1,
may we use the Exceptional Calculation Method to
model the energy savings accountable to server
virtualization?</span></font></p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Thanks
in advance and regards,</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Shuichi</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span
style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<div class="MsoNormal" style="text-align: center;"
align="center"><font size="3" color="black" face="Times New
Roman"><span style="font-size: 12pt; color: windowtext;"
lang="EN-US">
<hr tabindex="-1" align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font size="2" color="black"
face="Tahoma"><span style="font-size: 10pt; font-family:
Tahoma; color: windowtext; font-weight: bold;"
lang="EN-US">From:</span></font></b><font size="2"
color="black" face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma; color: windowtext;" lang="EN-US">
Bruce Easterbrook [<a class="moz-txt-link-freetext" href="mailto:bruce5@bellnet.ca">mailto:bruce5@bellnet.ca</a>] <br>
<b><span style="font-weight: bold;">Sent:</span></b>
Tuesday, June 21, 2011 1:25 AM<br>
<b><span style="font-weight: bold;">To:</span></b> Will
Mak<br>
<b><span style="font-weight: bold;">Cc:</span></b>
Shuichi Hendrickson; Patrick Keeney;
<a class="moz-txt-link-abbreviated" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [Equest-users] Data Center Modelling and Ice Storage
(2)</span></font><font color="black"><span style="color:
windowtext;" lang="EN-US"></span></font></p>
</div>
<p class="MsoNormal"><font size="3" color="black" face="Times
New Roman"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font size="4" color="black" face="Times
New Roman"><span style="font-size: 13.5pt;">Correct, you
need to model them but they normally don't vary between
the 2 models, just accounted for. LEED does assess how
efficiently your system deals with them for certain
process loads in certain buildings. I was describing a
"industrial type" process load which a big data centre is
similar to.</span></font>
<font size="4"><span style="font-size: 13.5pt;">LEED doesn't
really get into this territory or give credits for it as
far as the "industrial" process load. Now Google is very
interested in it because it impacts their profitability.
LEED is more concerned with the commercial market where
first cost rules and down and dirty is the norm.
Traditionally this sector did not pay much (any?)
attention to operating cost. LEED is trying to encourage
longer term thinking when a building is designed and
built. Industry normally thinks long term and includes
operating cost in their analysis over the life cycle of
the process. With the increase in the cost of energy plus
the needs of utility companies to reduce their peak loads
or reduce the rate of expansion of this peak load it makes
sense for the government and all the players to be on the
"team". There is a disconnect in the commercial sector to
many of the market forces which would encourage better
design. There is also a huge stock of old properties to
be re-furbished. This sector consumes a large chunk of
the nations energy.<br>
Bruce <br>
<br>
<br>
</span></font>On 20/06/2011 11:37 AM, Will Mak wrote: </p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><font
size="2" color="black" face="Segoe UI"><span
style="font-size: 10pt; font-family: "Segoe
UI";">Where does it say LEED does not deal with
process loads? It states that you must model the process
loads anticipated on the design on both proposed design
and baseline models.</span></font></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><font
size="2" color="black" face="Segoe UI"><span
style="font-size: 10pt; font-family: "Segoe
UI";"> </span></font></span></p>
<div>
<p class="MsoNormal"><b><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;
font-weight: bold;">William Mak, LEED AP BD+C</span></font></b><font
size="1"><span style="font-size: 9pt;"><br>
</span></font><font size="1"><span style="font-size: 8pt;">Mechanical
Design Engineer</span></font><font size="1" face="Segoe
UI"><span style="font-size: 9pt; font-family: "Segoe
UI";"><br>
</span></font><font size="1"><span style="font-size: 9pt;"><br>
</span></font><b><font size="2" color="#c75b12"
face="Segoe UI"><span style="font-size: 10pt;
font-family: "Segoe UI"; color: rgb(199, 91,
18); font-weight: bold;">EPSTEIN</span></font></b><font
size="1"><span style="font-size: 9pt;"><br>
</span></font><font size="1"><span style="font-size: 8pt;">Architecture<br>
Interiors<br>
Engineering<br>
Construction</span></font></p>
<p class="MsoNormal"><font size="1" color="black" face="Segoe
UI"><span style="font-size: 8pt; font-family: "Segoe
UI";">Sustainability<br>
<br>
600 West Fulton Street<br>
Chicago, Illinois 60661-1259<br>
<br>
D: (312) 429-8116<br>
F: (312) 429-8800</span></font></p>
<p class="MsoNormal"><font size="1" color="black" face="Segoe
UI"><span style="font-size: 8pt; font-family: "Segoe
UI";">E:<span style="color: rgb(0, 112, 192);">
<a moz-do-not-send="true"
href="mailto:wmak@epsteinglobal.com">wmak@epsteinglobal.com</a></span></span></font><font
size="1"><span style="font-size: 8pt;"><br>
W:</span></font><font size="1" color="#c75b12"
face="Segoe UI"><span style="font-size: 8pt; font-family:
"Segoe UI"; color: rgb(199, 91, 18);">
<a moz-do-not-send="true"
href="http://www.epsteinglobal.com/"><font
color="#c75b12"><span style="color: rgb(199, 91,
18);">www.epsteinglobal.com</span></font></a></span></font><font
size="1"><span style="font-size: 9pt;"><br>
<br>
</span></font><font size="2" color="#00b050"
face="Webdings"><span style="font-size: 10pt; font-family:
Webdings; color: rgb(0, 176, 80);">þ</span></font><font
size="1"><span style="font-size: 8pt;"> Epstein is a firm
believer in sustainability. We ask that you please
consider the environment before printing this e-mail.</span></font></p>
</div>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><font
size="2" color="black" face="Segoe UI"><span
style="font-size: 10pt; font-family: "Segoe
UI";"> </span></font></span></p>
<div>
<div style="border-right: medium none; border-width: 1pt
medium medium; border-style: solid none none; border-color:
windowtext -moz-use-text-color -moz-use-text-color; padding:
3pt 0mm 0mm;">
<p class="MsoNormal"><b><font size="2" color="black"
face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma; color: windowtext; font-weight:
bold;">From:</span></font></b><font size="2"
color="black" face="Tahoma"><span style="font-size:
10pt; font-family: Tahoma; color: windowtext;"> Bruce
Easterbrook [<a moz-do-not-send="true"
href="mailto:bruce5@bellnet.ca">mailto:bruce5@bellnet.ca</a>]
<br>
<b><span style="font-weight: bold;">Sent:</span></b>
Monday, June 20, 2011 10:22 AM<br>
<b><span style="font-weight: bold;">To:</span></b>
Shuichi Hendrickson<br>
<b><span style="font-weight: bold;">Cc:</span></b>
Will Mak; Patrick Keeney; <a moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">
equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [Equest-users] Data Center Modelling and Ice
Storage (2)</span></font></p>
</div>
</div>
<p class="MsoNormal"><font size="3" color="black" face="Times
New Roman"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font size="4" color="black" face="Times
New Roman"><span style="font-size: 13.5pt;">LEED doesn't
deal with process loads. Typically it is not something
you can have much effect on. The process defines how much
heat you have to deal with and normally it is not
negotiable. Economically your main technique is to load
shift. Time of use electrical billing (TOU) if in effect
will further reinforce this technique. If you have cheap
natural gas available and a large enough load absorption
chillers become an option as well. Economizer use and
free cooling can be very effective. As far as your
project goes and myself knowing very little about the
actual project you seem to be on the right track. You are
using a legitimate technique to load shift. There aren't
really any "rules" except to design an energy efficient
system which is inexpensive to run. As far as your set up
of your model I would use zones to correspond to the
planned expansions. Your first zone would represent Day 1
conditions without any techniques used to reduce server
loads. Your last will correspond to the full design. You
will need to get some idea of how they plan to expand and
enhance the server performance but just start with a plain
baseline for them. Looking at your unit combinations I
would go with more zones myself, break down Day one
conditions into 2 or 3 zones. It is easier to combine
zones later than try to add more. You will probably be
able to provide input on their proposed expansion plan and
the timing as well once you have a model running. You
want to keep your model flexible so it is easy to adjust
as you learn more about the system without having to start
over. Because there are discrete equipment sizes both for
HVAC systems and servers you could assist in planning the
expansions by optimizing the size of each addition and by
having a certain amount of over capacity to handle smaller
additions to the servers without adding to the HVAC
system. You would also optimize the size of the extra
capacity to minimize inefficiencies in the part load
running. You would be able to add their strategies for
reducing the process load to the model. Make sure you
keep a copy of the model before you start to run different
ideas. Some things suggested may require you to back up
to the base model. With copies along your process you
just jump back to where you need to restart your model
creation without going right back to the beginning.
Servers are a little different from people. You have to
remove all the heat all the time. They have to be
operational 24/7 no if ands or buts, 100% up time.<br>
Bruce Easterbrook P.Eng.<br>
Abode Engineering<br>
</span></font><br>
On 20/06/2011 01:24 AM, Shuichi Hendrickson wrote: </p>
<div>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">Patrick, Will, John and all</span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">Thank you all for the quick responses to my
original post.</span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">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" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">Again, any thoughts will be greatly
appreciated.</span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">Thanks in advance,</span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB">Shuichi</span></font></p>
<p class="MsoPlainText"><font size="2" color="black"
face="Courier New"><span style="font-size: 10pt;"
lang="EN-GB"> </span></font></p>
<p class="MsoNormal" style="text-align: justify;"><b><font
size="2" color="black" face="Times New Roman"><span
style="font-size: 10pt; font-weight: bold;"
lang="EN-GB">Shuichi Hendrickson</span></font></b></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="black" face="Times New
Roman"><span style="font-size: 10pt;" lang="EN-GB">Environmental
Engineer, LEED AP</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><font
size="2" color="black" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-GB"><br>
</span></font><b><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt; font-family:
"Book Antiqua"; color: gray; font-weight:
bold;" lang="EN-GB">ERM Japan</span></font></b></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="black" face="Times New
Roman"><span style="font-size: 10pt;" lang="EN-GB">The
Landmark Tower
</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="black" face="Times New
Roman"><span style="font-size: 10pt;">Yokohama</span></font><font
size="2"><span style="font-size: 10pt;"> 19F</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="black" face="Times New
Roman"><span style="font-size: 10pt;">2-2-1-1,
Minatomirai, Nishi-ku</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="black" face="Times New
Roman"><span style="font-size: 10pt;" lang="DE">Yokohama,
220-8119, Japan</span></font></span><span lang="DE"></span></p>
<p class="MsoNormal" style="text-align: justify;"><font
size="2" color="black" face="Arial"><span
style="font-size: 10pt; font-family: Arial;" lang="DE"><br>
</span></font><font size="2"><span style="font-size:
10pt;" lang="DE">T:</span></font><span style=""><font
size="2"><span style="font-size: 10pt;" lang="PT-BR"><a
moz-do-not-send="true"
href="tel:%2B81%280%2945-640-3780" target="_blank"><span
lang="DE">+81(0)45-640-3780</span></a></span></font></span><span
style=""><font size="2"><span style="font-size: 10pt;"
lang="DE">
<br>
F:</span></font></span><font size="2" color="gray"
face="Book Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color: gray;"
lang="PT-BR"><a moz-do-not-send="true"
href="tel:%2B81%280%2945-640-3781" target="_blank"><span
lang="DE">+81(0)45-640-3781</span></a></span></font><span
style=""><font size="2"><span style="font-size: 10pt;"
lang="DE"><br>
</span></font><font size="2" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"><a
moz-do-not-send="true"
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" face="Arial"><span style="font-size: 10pt;
font-family: Arial;">
</span><span lang="DE"><br>
</span></font></span><font size="2" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-GB"><a moz-do-not-send="true"
href="http://www.erm.com/" target="_blank"
title="http://www.erm.com/"><span lang="DE">www.erm.com</span></a></span></font><font
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font-family: Arial;" lang="EN-GB">
</span></font><span lang="DE"></span></p>
<p class="MsoNormal"><i><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt; font-family:
"Book Antiqua"; color: gray; font-style:
italic;" lang="EN-GB">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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</span></font></div>
<p class="MsoNormal"><b><font size="2" color="black"
face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
size="2" face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma;"> Will Mak [<a
moz-do-not-send="true"
href="mailto:wmak@epsteinglobal.com">mailto:wmak@epsteinglobal.com</a>]
<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> <a
moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">
equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
RE: [Equest-users] Data Center Modelling and Ice
Storage</span></font></p>
</div>
<p class="MsoNormal"><font size="3" color="black" face="Times
New Roman"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black" face="Times
New Roman"><span style="font-size: 10pt;">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="black" face="Times
New Roman"><span style="font-size: 10pt;"> </span></font></p>
<p class="MsoNormal"><b><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;
font-weight: bold;">William Mak, LEED AP BD+C</span></font></b><font
size="1"><span style="font-size: 9pt;"><br>
</span></font><font size="1" face="Segoe UI , sans-serif
;"><span style="font-size: 8pt; font-family: "Segoe
UI , sans-serif ;";">Mechanical Design Engineer</span></font><font
size="1" face="Segoe UI"><span style="font-size: 9pt;
font-family: "Segoe UI";"><br>
</span></font><font size="1"><span style="font-size: 9pt;"><br>
</span></font><b><font size="2"><span style="font-size:
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Engineering<br>
</span></font><font size="1"><span style="font-size: 8pt;">Construction</span></font></p>
<p class="MsoNormal"><font size="1" color="black" face="Segoe
UI ; color: black;"><span style="font-size: 8pt;
font-family: "Segoe UI ; 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></font></p>
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UI ; color: black;"><span style="font-size: 8pt;
font-family: "Segoe UI ; color: black;";">E:</span></font><font
size="1"><span style="font-size: 8pt;">
<a moz-do-not-send="true"
href="mailto:wmak@epsteinglobal.com">wmak@epsteinglobal.com</a></span></font><font
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W:</span></font><font size="1"><span style="font-size:
8pt;"> <a moz-do-not-send="true"
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<font color="#c75b12"><span style="color: rgb(199, 91,
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style="font-size: 8pt; font-family: "Segoe UI ,
sans-serif ;";"> Epstein is a firm believer in
sustainability. We ask that you please consider the
environment before printing this e-mail.</span></font></p>
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New Roman"><span style="font-size: 10pt;"> </span></font></p>
<div style="border-right: medium none; border-width: 1pt
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3pt 0mm 0mm;">
<p class="MsoNormal"><b><font size="2" color="black"
face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
size="2" face="Tahoma"><span style="font-size: 10pt;
font-family: Tahoma;">
<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<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> <a
moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">
equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [Equest-users] Data Center Modelling and Ice
Storage</span></font></p>
</div>
<p class="MsoNormal"><font size="3" color="black" face="Times
New Roman"><span style="font-size: 12pt;"> </span></font></p>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;">Hi
Shuichi,</span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"> </span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;">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>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"> </span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"><a
moz-do-not-send="true"
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>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"> </span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"> </span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;">Best,
Patrick</span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;"><br>
<br>
</span></font></p>
</div>
<div>
<p class="MsoNormal"><font size="3" color="black"
face="Times New Roman"><span style="font-size: 12pt;">On
Fri, Jun 17, 2011 at 3:07 AM, Shuichi Hendrickson <<a
moz-do-not-send="true"
href="mailto:Shuichi.Hendrickson@erm.com">Shuichi.Hendrickson@erm.com</a>>
wrote:</span></font></p>
<div>
<div>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">Hello all,</span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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 moz-do-not-send="true"
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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">Does anyone have
a better suggestion for load proportioning for a
datacenter? Am I over complicating this?</span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">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>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">Thank you in
advance and regards,</span></font></p>
<p class="MsoNormal"><font size="2" color="black"
face="Arial"><span style="font-size: 10pt;
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<p class="MsoNormal" style="text-align: justify;"><b><font
size="2" color="black" face="Times New Roman"><span
style="font-size: 10pt; font-weight: bold;"
lang="EN-GB">Shuichi Hendrickson</span></font></b></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray;" lang="EN-GB">Environmental Engineer, LEED
AP</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><font
size="2" color="black" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-GB"><br>
</span></font><b><font size="2" color="gray"
face="Book Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray; font-weight: bold;" lang="EN-GB">ERM Japan</span></font></b></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray;" lang="EN-GB">The Landmark Tower
</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray;">Yokohama</span></font><font size="2"
color="gray" face="Book Antiqua"><span
style="font-size: 10pt; font-family: "Book
Antiqua"; color: gray;"> 19F</span></font></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray;" lang="PT-BR">2-2-1-1, Minatomirai,
Nishi-ku</span></font></span><span lang="PT-BR"></span></p>
<p class="MsoNormal" style="text-align: justify;"><span
style=""><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt;
font-family: "Book Antiqua"; color:
gray;" lang="PT-BR">Yokohama, 220-8119, Japan</span></font></span><span
lang="PT-BR"></span></p>
<p class="MsoNormal" style="text-align: justify;"><font
size="2" color="black" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="PT-BR"><br>
</span></font><font size="2" color="gray" face="Book
Antiqua"><span style="font-size: 10pt; font-family:
"Book Antiqua"; color: gray;"
lang="PT-BR">T:<a moz-do-not-send="true"
href="tel:%2B81%280%2945-640-3780"
target="_blank">+81(0)45-640-3780</a>
<br>
F:<a moz-do-not-send="true"
href="tel:%2B81%280%2945-640-3781"
target="_blank">+81(0)45-640-3781</a><br>
</span></font><font size="2" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-GB"><a moz-do-not-send="true"
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></font><font
size="2" face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">
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style="font-size: 10pt; font-family: Arial;"
lang="PT-BR"><br>
</span></font><font size="2" face="Arial"><span
style="font-size: 10pt; font-family: Arial;"
lang="EN-GB"><a moz-do-not-send="true"
href="http://www.erm.com/" target="_blank"
title="http://www.erm.com/"><span lang="PT-BR">www.erm.com</span></a></span></font><font
size="2" face="Arial"><span style="font-size: 10pt;
font-family: Arial;" lang="EN-GB">
</span></font><span lang="PT-BR"></span></p>
<p class="MsoNormal"><i><font size="2" color="black"
face="Times New Roman"><span style="font-size:
10pt; font-style: italic;" lang="EN-GB">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>
<p class="MsoNormal" style="text-align: justify;"><font
size="1" color="teal" face="Webdings"><span
style="font-size: 8pt; font-family: Webdings;
color: teal;">P</span></font><font size="1"><span
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</span></font><font size="1" color="teal"
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<pre><font size="2" color="black" face="Courier New"><span style="font-size: 10pt;"> </span></font></pre>
<pre><font size="2" color="black" face="Courier New"><span style="font-size: 10pt;"> </span></font></pre>
<pre><font size="2" color="black" face="Courier New"><span style="font-size: 10pt;">_______________________________________________</span></font></pre>
<pre><font size="2" color="black" face="Courier New"><span style="font-size: 10pt;">Equest-users mailing list</span></font></pre>
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<pre><font size="2" color="black" face="Courier New"><span style="font-size: 10pt;">To unsubscribe from this mailing list send a blank message to <a moz-do-not-send="true" href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a></span></font></pre>
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