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<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.<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'>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).<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'>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.<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'>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%?<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'>Our interpretation is no.<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'>Based on the following from LEED
NC 2.2<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'><img width=592 height=298
id="Picture_x0020_1" src="cid:image003.jpg@01C9870D.19338060"></span><span
style='color:#1F497D'> <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'>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.<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'>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.<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'>Just some food for thought on
how we approach this area.<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'>Hope this helps.<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'>Regards,<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'>James<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'><o:p> </o:p></span></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><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#00B050'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>Energy Engineer</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>TME, Inc.</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'>Little Rock, AR</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#1F497D'>ph 501-666-6776</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#1F497D'>cell 501-351-4667</span><span style='font-size:7.5pt;
font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></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><u><span
style='color:#1F497D'><o:p></o:p></span></u></p>
</div>
<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"'>
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?<o:p></o:p></span></p>
</div>
</div>
<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.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'><o:p> </o:p></span></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.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'>_____________<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Demba Ndiaye<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-CA 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"'>
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?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-CA><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Hi All,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></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. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Example:<o:p></o:p></span></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'>) <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Let’s
assume that X = $1000.00 = 75% * T<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></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<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Therefore T = $
1000.00 / 75% = $ 1333.33<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>and the Process
loads’ cost = 25 % * $ 1333.33 = $ 333.33<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>This is how I
understand the 25% process load calculation.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Can someone
please confirm this approach? <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Thank you,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#000099'>Anis <o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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