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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'>Also – if you’re doing this for LEED documentation
and the project was registered<u> AFTER</u> May 28<sup>th</sup> 2008, you will
need to comply with the modeling protocols in this document:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><a href="http://www.usgbc.org/ShowFile.aspx?DocumentID=4176">http://www.usgbc.org/ShowFile.aspx?DocumentID=4176</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'>Otherwise, the best way to do this is to get the rates (as James
has described below) and set up a steam meter and utility rate based on the
rate. Make sure that the chilled water rate calculated takes into account the
cooling tower loads as well. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'>Lastly – you will find that when you model the chilled
water rates, your utility bills probably go down (or they should), while your energy
use goes up. I had a similar issue and was confused, until it was pointed
out to me that the cooling energy reported in the BEPU report is actually the
space cooling load and not the actual energy. In reality, if you have a campus
chiller that runs at 0.65 kW/ton and with cooling tower energy (pumps fans etc)
it goes up to 0.75 kW/ton, then you need to factor that in to get the actual
cooling energy. Keep in mind – you only need to factor in the heat
rejection energy (cooling tower fans & pumps) – not the chilled water
loop energy – that should already be modeled. If your COP of the system –
chiller+heat rejection is 4 (for simplicity), then your actual cooling load is
1/4<sup>th</sup> the reported load. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'>Hope this helps<o:p></o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-family:"Garamond","serif";color:black'>Vikram Sami,</span></b><span
style='color:#0025C4'> </span><span style='font-family:"Garamond","serif";
color:black'>LEED AP</span><span style='color:#0025C4'> <br>
</span><span style='font-family:"Garamond","serif";color:black'>Direct Phone
404-253-1466 | Direct Fax 404-253-1366</span><span style='color:#0025C4'> <o:p></o:p></span></p>
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style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ARGENT</span></b><b><span
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style='font-size:10.0pt;font-family:"Garamond","serif";text-decoration:none'>www.lordaecksargent.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:24.0pt;font-family:Webdings;color:#007F00'>P </span><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:#007F00'>Think
GREEN before you print.</span><span style='color:#0025C4'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#0025C4'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0025C4'><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>James V.
Dirkes II P.E.<br>
<b>Sent:</b> Monday, December 29, 2008 11:17 AM<br>
<b>To:</b> 'Gregg Liddick'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Campus Chillers<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:blue'>Dear Gregg,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>With some luck, the campus will know how they've derived the ton-hr
billing rate and you could apply those unit rates and overhead factors to your
single building. Much of the time, though, the billing rates are
"seat of the pants"-based or were developed long ago by people who no
longer work there..... Good luck!</span><o:p></o:p></p>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><b><span style='font-size:13.5pt'>The Building
Performance Team<br>
</span>James V. Dirkes II, P.E., LEED AP<br>
</b>1631 Acacia Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><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>Gregg
Liddick<br>
<b>Sent:</b> Monday, December 29, 2008 10:54 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Campus Chillers</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='color:black'>I'm trying to figure out a way to
model utility rates using a campus chiller. The building is billed by the
ton of chilled water used. If anyone can help me find a way to do this it
would be greatly appreciated.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Best Regards,<o:p></o:p></p>
</div>
<p class=MsoPlainText> <o:p></o:p></p>
<p class=MsoPlainText>Gregg Liddick, LEED® AP<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>The Epsten Group, Inc.<o:p></o:p></p>
<p class=MsoPlainText>429 Edgewood Avenue<o:p></o:p></p>
<p class=MsoPlainText>Atlanta GA 30312<o:p></o:p></p>
<p class=MsoPlainText>Phone: 404-577-0370 ext. 102<o:p></o:p></p>
<div>
<p class=MsoNormal>Fax: 404-577-1739<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><a href="mailto:gliddick@theepstengroup.com">gliddick@theepstengroup.com</a><o:p></o:p></p>
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