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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Follow up question. I have just run a building using a DVC
method and have seen a significant savings between 20% and 30%. Does this surprise
anybody? (It surprised me, but cannot find any errors in the model). It is an
all electric building in the Northeast region. Thanks for any input.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Mike<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></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>Amanda
Bogner<br>
<b>Sent:</b> Tuesday, March 18, 2008 12:28 PM<br>
<b>To:</b> 'Jessica XP'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Exceptional Calculation Method for Demand
ControlledVentilation<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:blue'>Unlike
the experience that Aleka Pappas described, I have never been asked by the
USGBC to provide an Exception Calculation Method when using DCV in
eQuest. This only proves that the review process is not
consistent...</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:blue'>Regardless, I've
only modeled DCV using the minimum flow control options under the Air-side
HVAC tab within the thermal zones (MIN-FLOW-CTRL). You have the option of
DCV with reset up, reset up/down, or reset down. </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:blue'>If
you're trying to model DCV in a different way, you probably should provide
documentation for an Exceptional Calculation Method. These are not hard
to put together. On the EAc1 template, there is a specific area that
you'll need to fill in - essentially describing the method you've used and your
reasons for it along with the energy and cost savings that method is calculating.
Read the instructions on the template - they're pretty straightforward. </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:blue'>When
I've done Exceptional Calculations Methods in the past, I've created a new
proposed case model as the USGBC will want to see output from the proposed case
model with the Exceptional Calcs and without it. You'll document Table
1.8.2 on the EAc1 template with the data reported in the proposed case model
without the Exceptional Calculation Method.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Amanda
Bogner, PE LEED AP</span><o:p></o:p></p>
<p class=MsoNormal><img width=120 height=69 id="_x0000_i1025"
src="cid:image001.png@01C888F4.946F50A0"><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>404.806.2018
EXT 103</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>404.806.2019
FAX</span><o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<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>Jessica XP<br>
<b>Sent:</b> Tuesday, March 18, 2008 10:13 AM<br>
<b>To:</b> bldg-sim<br>
<b>Subject:</b> [Bldg-sim] Exceptional Calculation Method for Demand
ControlledVentilation</span><o:p></o:p></p>
<p class=MsoNormal>Hi folks,<br>
<br>
I am simulating a 24-floor building to be LEED certified. The software is
Equest. In order to achieve as many points as possible in EA CR1,
demand-controlled ventilation (DCV) has been modeled in the proposed design.
But we are not sure if this stragety needs Exception Calculation Method
requested by USGBC. In one of CIR historical archive of LEED online, USGBC
requested exceptional calculation method for schedule-based DCV models. I have
no idea if USGBC would treat DCV models in Equest as those of schedule-based.<br>
<br>
The use or removal of DCV will decisively impact the achieveable points of EA
CR1. I am wondering if anyone in this community has clear picture on this
issue.<br>
<br>
Thanks in advance.<br>
<br>
Jessi <o:p></o:p></p>
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