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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'>Karen,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'>I gave a presentation on this subject with a member from
USGBC and this exact question was brought up. The answer was to use the local
rate for both systems. LEED/ASHRAE require that the energy rate be the same for
both the baseline and proposed designs. </span><i>Fuel and electricity rates
are assigned using the local utility rate schedules as they would normally
apply to the building and using the normal ASHRAE and LEED modeling rules. </i><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#0070C0'>This
line while a little ambiguous means that you should use the rate that would be
applied to the building if it was not connected to the plant, not the
discounted rate that the plant most likely receives. <i><o:p></o:p></i></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'><o:p> </o:p></span></i></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'>Thanks<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#0070C0'><o:p> </o:p></span></i></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>Seth Spangler, LEED® AP <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>Project Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Georgia","serif";color:#0070C0'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>RMF Engineering, Inc <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>Ph: (843) 971-9639 ext:1497</span><span style='color:#0070C0'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>Fax: (843) 971-9641 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Georgia","serif";
color:#0070C0'>sspangle@rmf.com</span><span style='font-size:10.0pt;font-family:
"Arial","sans-serif";color:#0070C0'><o:p></o:p></span></p>
<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>Karen
Walkerman<br>
<b>Sent:</b> Tuesday, September 15, 2009 5:21 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Simulation of Central Plant for LEED 2.2 EA C1<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi All,<br>
<br>
I'm completing a model of a building that is heated by a central campus steam
plant for LEED NC 2.2 EA P1 and C1. I've followed the guidelines in
"Required Treatment of District Thermal Energy in LEED NC 2.2 and LEED for
Schools" dated May 28, 2008.<br>
<br>
I'm doing pretty well, but I'm a bit confused by the following paragraph (page
8 under the heading: Energy Model Implementation – Energy rates)<br>
<br>
Step 2 (Aggregate Building / DES scenario) – in this modeling scenario
the DES-supplied energy is not<br>
modeled as cost-neutral purchased energy, and thus purchased DES rates (chilled
water, steam, hot<br>
water) are ignored. Fuel and electricity rates are assigned using the local
utility rate schedules as they<br>
would normally apply to the building and using the normal ASHRAE and LEED
modeling rules. For<br>
the Baseline Building the rates are applied to the code-compliant heating or
cooling plant as instructed<br>
in Appendix G, and for the Proposed Building the rates are applied to the
virtual plant according to the<br>
actual energy sources used in the upstream DES (electricity, gas, oil, etc.).<br>
<br>
They are a bit unclear...<br>
<br>
If the central plant burns #6 oil, do you use the local rate for #6 oil for the
proposed system and the local rate for home heating oil for the baseline?<br>
<br>
OR<br>
<br>
do you use the local rate for home heating oil for both?<br>
<br>
Has anyone submitted one of these projects yet?<br>
<br>
Thanks for your help.<br>
<br>
--<br>
Karen<o:p></o:p></p>
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