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<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">
<DIV>Thank you again, Nick!</DIV>
<DIV> </DIV>
<DIV>Your thinking is in line with mine. The debate at the project
meetings is interesting. We have about 250 Tons of process cooling water
on average. We can either hold that constant or take credit for savings
with a more efficient chilled water plant. I have been thinking that we
would take credit for it, but also keep everyone apprised of the cost in LEED
points if it is rejected in review. Good documentation will help.</DIV>
<DIV> </DIV>
<DIV>Best to y’all,</DIV>
<DIV> </DIV>
<DIV>Dave</DIV>
<DIV
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<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=ncaton@smithboucher.com
href="mailto:ncaton@smithboucher.com">Nick Caton</A> </DIV>
<DIV><B>Sent:</B> Monday, October 22, 2012 7:25 PM</DIV>
<DIV><B>To:</B> <A title=Dave.Weigel@thewattdoctors.com
href="mailto:Dave.Weigel@thewattdoctors.com">The Watt Doctors - Dave Weigel</A>
; <A title=equest-users@lists.onebuilding.org
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A>
</DIV>
<DIV><B>Subject:</B> RE: [Equest-users] Another process load
question</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">I’ve
often intentionally differentiated space conditioning equipment for spaces
housing significant process loads between my baseline/proposed models without
incident from the LEED reviewership, per your example #1. Commonly
occurring scenarios include server rooms and elevator machine rooms with small
mini-split DX cooling. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">I’ll
maintain, this is something that can and should remain open for interpretation
by the modeler – not one mold will fit every project. There may be cases
where modeling consumptions/loads and the corresponding space conditioning
discretely is overly complex or disadvantageous, in which case holding
everything constant between the models would be an acceptable approach. A
self-contained walk-in freezer with its condenser at the exterior comes to mind
as something I probably wouldn’t break apart (but either interpretation could
work).<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Whatever
you choose, I wouldn’t flip-flop too much on the issue within the same
project. Try to take a unified interpretation and apply that to both
baseline and proposed for each space/case – it will make documentation for EAp2
spreadsheets easier later. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">~Nick<o:p></o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><IMG
id=Picture_x0020_1 alt=cid:489575314@22072009-0ABB
src="cid:D047533DE6CD470D874ABD42CB0D566E@WattDoxPrimary" width=119
height=37></SPAN><B><SPAN
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e">NICK CATON,
P.E.</SPAN></B><B><SPAN
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<P class=MsoNormal><SPAN
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ENGINEER<o:p></o:p></SPAN></P>
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<P class=MsoNormal><SPAN
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& Boucher Engineers</SPAN><SPAN
style="COLOR: #cc9900; FONT-SIZE: 7.5pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">25501
west valley parkway, suite 200<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">olathe,
ks 66061<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
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913.344.0036<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">fax
913.345.0617<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
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<DIV
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>The Watt
Doctors - Dave Weigel<BR><B>Sent:</B> Saturday, October 20, 2012 6:32
PM<BR><B>To:</B> equest-users@lists.onebuilding.org<BR><B>Subject:</B>
[Equest-users] Another process load question<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p></o:p> </P>
<DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Hi
Friends,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">This is more of a LEED
/ ASHRAE 90.1 question, but I see a lot of experience in this group. I
hope someone has some experience with a LEED review on this issue. It may
be a moot point, but I can’t go into the arguments below without a little
backup.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">A debate has arisen
among engineers, architects, and a LEED AP regarding the cooling energy for
space conditioning in an area with process loads. This is specifically related
to 90.1-2007 exception G3.1.1.b, and to a literal vs. extended interpretation of
90.1-2007 part 3.2, definitions:<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Process energy :
energy consumed in support of a manufacturing, industrial, or commercial process
[implying medical equipment as well] other than conditioning spaces and
maintaining comfort and amenities for the occupants of the
building.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Process load: the load
on a building resulting from the consumption or release of process
energy.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">This may be a moot
point if it has already been the subject of a LEED 2009 CIR, or if there is an
official ASHRAE interpretation or addendum. I haven’t been able to find
any of those.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><STRONG><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">The
liberal-interpretation side views it this way:</SPAN></STRONG><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">The definition of
process load says “consumption or release,” and says nothing about removing the
heat from the space.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Process energy is the
total input energy to a process. The additional energy to cool the space
in which the process resides is not process energy, it is a building space
conditioning load.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Example 1: A
server room, MRI room, or a room full of autoclaves is allowed to have system 3
(packaged DX VAV) in the baseline model under this exception rather than system
7 (chilled water VAV). While the process load itself must be simulated the
same in baseline and proposed design cases, energy savings from the higher
efficiency of the space cooling system is included in the bottom line
savings. This includes the cooling load imparted to the space by the
process load, such as the waste heat from the autoclaves, MRI, or
servers.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><STRONG><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">The
conservative-interpretation side views it from the polar opposite
position</SPAN></STRONG><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">. They contend
that all input process energy plus the energy required to remove its waste heat
must be held constant, no matter if the cooling is done by a building air system
or by the building chilled water plant.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">For the definition of
process energy, “energy consumed in support of manufacturing, industrial, or
commercial process,” they claim that the energy to remove waste heat is “in
support of” the process and must be counted as process
load.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">In eQuest terms, the
conservative side says we must extract the hourly cooling loads that are due to
each and every piece of waste heat from process equipment. Then we re-insert
that cooling load profile as process energy and hold it constant from the
baseline to the proposed design as an external load on the meter. So, the
MRI process load turns into the input power plus the energy to cool
it.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">I'm not saying which
side I'm on. I would not be a big fan of extracting and manipulating all those
load profiles, especially in the case of that welder.
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Dave<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">David R. Weigel,
PE<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Managing
Member<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">1189 Golden Circle
SW, Lilburn GA 30047<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">678-353-6941
office 901-619-1716
cell<o:p></o:p></SPAN></P></DIV>
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style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
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