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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Mike,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The exception calculation method you describe
is absolutely correct.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Obtaining savings for natural ventilation
within LEED however is another story. I am one of the certification
reviewers and also vice-chair of the EA TAG. My understanding is that to
date the USGBC has not allowed natural ventilation to fully count under EAc1
even if submitted as an exceptional calculation method. The TAG is
awaiting the work of the 90.1 subcommittee you mention to develop a uniform
methodology.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Perhaps your submission will be the one to
set the precedent. Thanks to all for helping to blaze the trail. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<div>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Marcus Sheffer</span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Energy Opportunities, Inc/a 7group
Company</span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:navy'>1200 E Camping Area Road, Wellsville, PA 17365</span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:navy'>717-292-2636, </span></font><font
color=navy><span style='color:navy'><a href="mailto:sheffer@sevengroup.com"><font
size=1 face=Arial><span style='font-size:7.5pt;font-family:Arial'>sheffer@sevengroup.com</span></font></a></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:navy'><a href="http://www.sevengroup.com">www.sevengroup.com</a></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim@gard.com [mailto:bldg-sim@gard.com] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Mike Tillou<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, December 21, 2006
2:03 PM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@gard.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [bldg-sim] Modeling
buildings with natural ventilation for Appendix G</span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Not yet...I have a project with natural
ventilation using this method that will be submitted for final review
in Feb-Mar 2007. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>MMT</span></font></p>
</div>
<p><font size=2 face="Swis721 Blk BT"><span style='font-size:10.0pt;font-family:
"Swis721 Blk BT"'><!-- Converted from text/rtf format -->Michael Tillou, PE</span></font>
<br>
<font size=1 face="Swis721 Blk BT"><span style='font-size:7.5pt;font-family:
"Swis721 Blk BT"'>ETC Group, Inc - Energy Engineering for a Sustainable Future</span></font>
<br>
<font size=1 face="Swis721 Blk BT"><span style='font-size:7.5pt;font-family:
"Swis721 Blk BT"'>Ph:413-458-9870</span></font> </p>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> bldg-sim@gard.com [mailto:bldg-sim@gard.com]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Peter Alspach<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, December 19, 2006
1:34 PM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@gard.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [bldg-sim] Modeling
buildings with natural ventilation for Appendix G</span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Mike,</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Have you succeeded in getting a naturally
ventilated building through the USGBC with this method?</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>If so, I am sure all would be glad to hear
it.</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Peter</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim@gard.com [mailto:bldg-sim@gard.com] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Mike Tillou<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, December 19, 2006
7:18 AM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@gard.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [bldg-sim] Modeling
buildings with natural ventilation for Appendix G</span></font></p>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Ramana,</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>The ASHRAE 90.1 ECB sub-committee is
working on a methodology for simulating natural ventilation within the
framework of Appendix G but I don't think its finished yet. In the
meantime here is what I would recommend.</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Appendix G / 90.1 ECB allows you
to use an exception calculation method to simulate hybrid
systems or unique efficiency measures to demonstrate above-standard
performance. I think this would certainly apply in your case.
</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Here's what I have done on projects
requiring an exception calculation method. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>1. Establish your energy cost budget
and your design energy case following the Appendix G
guidelines. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>2. Create a second model using the Design
Energy Case as the baseline and make the necessary modifications to simulate
radiant heating / no cooling via natural ventilation. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>3. Report the energy savings from your
exception calculation as a line item at the end of your LEED EA-1 summary table
(similar to how renewable energy is reported). </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>4. Include a seperate summary
table for the exception calculation showing the energy end-use
breakdown and how you arrived at the cost savings. Show both the
baseline and proposed energy use. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>5. Make sure the savings are reasonable
and prudent for the system you are proposing. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>6. Document any changes to the model
especially changes to schedules that were necessary to properly simulate your
system. </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>7. Make it easy for someone to review
your assumptions and the methodology you used to estimate the savings</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>I hope this helps. Good luck.</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Mike</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<!-- Converted from text/rtf format -->
<p><font size=2 face="Swis721 Blk BT"><span style='font-size:10.0pt;font-family:
"Swis721 Blk BT"'>Michael Tillou, PE</span></font> <br>
<font size=1 face="Swis721 Blk BT"><span style='font-size:7.5pt;font-family:
"Swis721 Blk BT"'>ETC Group, Inc - Energy Engineering for a Sustainable Future</span></font>
<br>
<font size=1 face="Swis721 Blk BT"><span style='font-size:7.5pt;font-family:
"Swis721 Blk BT"'>Ph:413-458-9870</span></font> </p>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> bldg-sim@gard.com [mailto:bldg-sim@gard.com]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Ramana Koti<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, December 18, 2006
4:53 PM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@gard.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [bldg-sim] Modeling
buildings with natural ventilation for Appendix G</span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Dear all,<br>
<br>
Is ignoring natural ventilation in both proposed and baseline designs an
accepted/fair way of modeling based on Appendix G (ASHRAE 90.1-2004)?<br>
<br>
Part of the proposed design has (radiant heating + natural ventilation) with no
cooling which was modeled as a radiant slab, no cooling, natural ventilation
ignored. <br>
<br>
But the Baseline HVAC system based on Appendix G is System 5: Packaged VAV
w/Reheat. (Natural ventilation can be modeled based on Air Change method or
Sherman Grimsrud method though I do not know how to do it).<br>
<br>
I cannot decide how to make the baseline and proposed comparable with respect
to Natural Ventilation (in a manner acceptable to LEED review), suggestions
will be appreciated.<br>
<br>
Thanks,<br>
<br>
Ramana Koti, Sustainable Building Analyst <br>
LEED AP<br>
<br>
ELEMENTS | a division of berkebile nelson immenschuh mcdowell architects<br>
106 W. 14th Street Suite 200<br>
Kansas City, Missouri 64105<br>
<br>
p 816.783.1635 f 816.783.1501<br>
www.bnim.com| <a href="http://elements.bnim.com">elements.bnim.com</a></span></font></p>
</blockquote>
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