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<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff>Unlike the experience that Aleka Pappas described,
I</FONT></SPAN><SPAN class=500101416-18032008><FONT face=Calibri color=#0000ff>
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...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff>Regardless, </FONT></SPAN><SPAN
class=500101416-18032008><FONT face=Calibri color=#0000ff>I've only modeled DCV
using the minimum flow control </FONT></SPAN><SPAN
class=500101416-18032008><FONT face=Calibri color=#0000ff>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. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff>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. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff>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.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=500101416-18032008><FONT face=Calibri
color=#0000ff></FONT></SPAN> </DIV>
<DIV>
<DIV align=left>
<DIV align=left><FONT face=Calibri>Amanda Bogner, PE LEED AP</FONT></DIV>
<DIV align=left><IMG alt="" hspace=0 src="cid:500101416@18032008-1E58"
align=baseline border=0></DIV>
<DIV align=left><FONT face=Calibri>404.806.2018 EXT 103</FONT></DIV>
<DIV align=left><FONT face=Calibri>404.806.2019 FAX</FONT></DIV></DIV></DIV>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> 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<BR></FONT><BR></DIV>
<DIV></DIV>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
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