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<p class=MsoNormal><span style='color:#1F497D'>Yes just quantify the
non-regulated or process loads in the model. The purpose behind the 25% was to
try and make sure that folks were modeling everything in the building which
affects total energy use.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Marcus<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<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"'> Arvinder Dang
[mailto:Arvinder.Dang@som.com] <br>
<b>Sent:</b> Thursday, February 05, 2009 12:29 PM<br>
<b>To:</b> Marcus Sheffer; bldg-sim@onebuilding.org<br>
<b>Subject:</b> RE: [Bldg-sim] Spam:Re: Process Loads?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Marcus,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Hope you’re doing well. A quick question as a follow up.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I have a campus building that is using district chilled water and
steam – and the energy modeling is based on “Required Treatment of
District Thermal Energy in LEED NC 2.2 and LEED for Schools“. The project
is seeking only 2 points and the model only includes downstream equipment
keeping the district heating and cooling cost neutral in both the base case and
the design case.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>The cost of steam is around $44.2 per Mlb of Steam, cost of chilled
water $0.18 while that of electricity only $0.09 base don campus rates.
Since the cost of steam and chilled water is way higher than that of
electricity, there is no way that process energy cost which includes equipment,
elevators, etc equates to 25%. Cost of space heating and cooling constitutes a
bigger fraction compared to lighting, equipment, pumps and all others end uses
that use the electric rate.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Would a narrative explaining the same justify why the minimum 25%
requirement cannot be held for district heating and cooling systems that model
only downstream equipment and are kept cost neutral due to the differential in
the rate structure.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Thanks</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
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<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
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<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:red'>ARVINDER DANG, LEED</span><sup><span
style='font-size:10.0pt;color:red'>®</span><span style='color:red'> </span></sup><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:red'>AP</span><o:p></o:p></p>
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</span><o:p></o:p></p>
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<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:navy'>SKIDMORE, OWINGS & MERRILL LLP
</span><o:p></o:p></p>
<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:gray'>224 SOUTH MICHIGAN</span><o:p></o:p></p>
<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
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<p class=MsoNormal style='line-height:13.5pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:gray'>T: 312.360.4633 F:
312.360.4910 </span><o:p></o:p></p>
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font-family:"Arial","sans-serif";color:gray'><a
href="mailto:ARVINDER.DANG@SOM.COM">ARVINDER.DANG@SOM.COM</a></span><o:p></o:p></p>
<p class=MsoNormal style='line-height:13.5pt'><span style='color:navy'> </span><o:p></o:p></p>
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<hr size=2 width="100%" align=center>
</span></div>
<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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Marcus
Sheffer<br>
<b>Sent:</b> Thursday, February 05, 2009 10:49 AM<br>
<b>To:</b> bldg-sim@onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Spam:Re: Process Loads?</span><o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>The word “default”
is unfortunate; the credit language should read “at least”.
If your project is under 25% simply submit justification for why you are under
25%. The best way to do that is with a table showing the assumed plug
loads or other process loads in the facility.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>So if you are over 25% no
worries; if you are under justify why you are under. Don’t add
process loads until you reach precisely 25% as some projects submitting for
LEED have done.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Regarding facilities with very
high process loads pursuing LEED certification, James is correct that this
poses a major problem which the USGBC will hopefully address this year.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Marcus Sheffer, Vice-Chair USGBC EA TAG</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Energy Opportunities, Inc/a 7group Company</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>1200 E Camping Area Road, Wellsville, PA 17365</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>717-292-2636, </span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><a href="mailto:sheffer@sevengroup.com"><span
style='font-size:7.5pt;font-family:"Arial","sans-serif"'>sheffer@sevengroup.com</span></a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="http://www.sevengroup.com">www.sevengroup.com</a></span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'> </span><o:p></o:p></p>
<div>
<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"'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>James Hess<br>
<b>Sent:</b> Wednesday, February 04, 2009 10:11 PM<br>
<b>To:</b> Demba Ndiaye; Anis Ben Ayed; <br>
<b>Cc:</b> Caleb Brantley<br>
<b>Subject:</b> Re: [Bldg-sim] Spam:Re: Process Loads?</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>FYI … our take on this
issue is to document the inputs that make up the misc equipment. In many
cases, we find that misc equipment, or “process loads” come nowhere
close to 25% of total costs.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>For example, we are currently
working on a library LEED project. We have very good estimates for the
number of computers going into the facility, and have estimates for students
with notebook computers, printer/copiers, breakroom equipment (refrigerator,
coffee pot, etc.), etc. You can get energy estimates for all that stuff
from EnergyStar’s website (they have lots of good data), or take your own
measurements of equipment over time like I have ( using simple inexpensive
equipment such as the “KillaWatt” plug in 120V plug load
measurement device).</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Anyway, we document it and add
all that up </span><span style='font-family:Wingdings;color:#1F497D'>à</span><span
style='color:#1F497D'> comes to ~ 0.3 watts/SF, add a schedule into our energy
simulation program, and we come nowhere close to 25% of total energy costs.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>What would we do at that
point? We have good wattage inputs based on sound and reasonable
data. For example, a typical desktop computer will use ~ 65 watts on
average. A 22” flat panel LCD monitor will use ~ 45 watts.
So, do you throw all those numbers out and arbitrarily increase the
“watts/SF” values until process loads = 25%?</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Our interpretation is no.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Based on the following from LEED
NC 2.2</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><img border=0 width=592
height=298 id="Picture_x0020_1" src="cid:image001.jpg@01C987A2.B3349830"> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>We interpret this as we can use
less than 25% as long as we document, so we document. We document our
assumptions for process loads anyway so if it comes out less, we’re
covered.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>We did have a project that was a
flight simulator building for the US Air Force. The simulator equipment
used a ton of energy </span><span style='font-family:Wingdings;color:#1F497D'>à</span><span
style='color:#1F497D'> energy costs > 75% of total building energy
costs. That blew the LEED savings out of the water. Even if you
assign the same load to the baseline, mathematically it’s very difficult
to achieve overall building energy savings of 14% if 75% of energy </span><span
style='font-family:Wingdings;color:#1F497D'>à</span><span style='color:#1F497D'>
you can’t do anything about. </span><span style='font-family:Wingdings;
color:#1F497D'>J</span><span style='color:#1F497D'>. In fact, we could
not.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Just some food for thought on
how we approach this area.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Hope this helps.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Regards,</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>James</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#00B050'>James A. Hess, PE, CEM</span></i></b><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>Energy Engineer</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>TME, Inc.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>Little Rock, AR</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#1F497D'>ph 501-666-6776</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#1F497D'>cell 501-351-4667</span><o:p></o:p></p>
<p class=MsoNormal><u><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:blue'><a href="mailto:email@tmecorp.com">jhess@tmecorp.com</a></span></u><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
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<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"'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Demba
Ndiaye<br>
<b>Sent:</b> Wednesday, February 04, 2009 5:57 PM<br>
<b>To:</b> Anis Ben Ayed; bldg-sim@onebuilding.org<br>
<b>Subject:</b> Spam:Re: [Bldg-sim] Process Loads?</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>The process energy
cost should compose at least 25% of the total energy cost.</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>And yes, if you have
a total cost of $1,333 then the process energy should be >= $333.</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'> </span><o:p></o:p></p>
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<p class=MsoNormal><span style='color:#1F497D'>_____________</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Demba Ndiaye</span><o:p></o:p></p>
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<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'> </span><o:p></o:p></p>
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<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"'>
bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Anis Ben Ayed<br>
<b>Sent:</b> Wednesday, February 04, 2009 6:33 PM<br>
<b>To:</b> bldg-sim@onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Process Loads?</span><o:p></o:p></p>
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<p class=MsoNormal><span lang=EN-CA> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Hi All,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>According to
the LEED NC v2.2 user manual, the default process energy cost is 25% of the
total energy cost for the baseline building. </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Example:</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>The total
energy cost for a baseline building is T = (X + </span><b><span
style='font-size:10.0pt;color:red'>Process loads</span></b><span
style='font-size:10.0pt;color:#000099'>) </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Let’s
assume that X = $1000.00 = 75% * T</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>To find the
energy cost for a baseline building, we solve for T</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Therefore T = $
1000.00 / 75% = $ 1333.33</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>and the Process
loads’ cost = 25 % * $ 1333.33 = $ 333.33</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>This is how I
understand the 25% process load calculation.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Can someone
please confirm this approach? </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Thank you,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Anis </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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