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<DIV><SPAN class=329500519-21122006><FONT face=Arial color=#0000ff size=2>I have
always gone under the assumption that my results have to meet the criteria for
zone temperatures being within the prescribed range.</FONT></SPAN></DIV>
<DIV><SPAN class=329500519-21122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=329500519-21122006><FONT face=Arial color=#0000ff
size=2>MMT</FONT></SPAN></DIV>
<DIV> </DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=en-us><FONT face="Swis721 Blk BT" size=2>Michael Tillou,
PE</FONT></SPAN> <BR><SPAN lang=en-us><FONT face="Swis721 Blk BT" size=1>ETC
Group, Inc - Energy Engineering for a Sustainable Future</FONT></SPAN> <BR><SPAN
lang=en-us><FONT face="Swis721 Blk BT" size=1>Ph:413-458-9870</FONT></SPAN> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> Jon McHugh
[mailto:Jon.McHugh@h-m-g.com] <BR><B>Sent:</B> Tuesday, December 19, 2006 1:25
PM<BR><B>To:</B> Mike Tillou; bldg-sim@gard.com<BR><B>Subject:</B> RE:
[bldg-sim] Modeling buildings with natural ventilation for Appendix
G<BR><BR></FONT></DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff>Mike,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff>Does this proposed methodology place limits on the number
of occupied hours above or below a given temperature/RH?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff>Thanks,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=187512418-19122006><FONT face=Arial
color=#0000ff>Jon McHugh</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> bldg-sim@gard.com
[mailto:bldg-sim@gard.com] <B>On Behalf Of </B>Mike Tillou<BR><B>Sent:</B>
Tuesday, December 19, 2006 7:18 AM<BR><B>To:</B>
bldg-sim@gard.com<BR><B>Subject:</B> [bldg-sim] Modeling buildings with
natural ventilation for Appendix G<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2>Ramana,</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>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.</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2>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.
</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=479163814-19122006></SPAN><SPAN
class=479163814-19122006><FONT face=Arial color=#0000ff size=2>Here's what I
have done on projects requiring an exception calculation method.
</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>1.
Establish your energy cost budget and your design energy case
following the Appendix G guidelines. </FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>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. </FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>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). </FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>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.
</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>5.
Make sure the savings are reasonable and prudent for the system you are
proposing. </FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>6.
Document any changes to the model especially changes to schedules that were
necessary to properly simulate your system. </FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>7.
Make it easy for someone to review your assumptions and the methodology
you used to estimate the savings</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff size=2>I
hope this helps. Good luck.</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2>Mike</FONT></SPAN></DIV>
<DIV><SPAN class=479163814-19122006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=en-us><FONT face="Swis721 Blk BT" size=2>Michael Tillou,
PE</FONT></SPAN> <BR><SPAN lang=en-us><FONT face="Swis721 Blk BT" size=1>ETC
Group, Inc - Energy Engineering for a Sustainable Future</FONT></SPAN>
<BR><SPAN lang=en-us><FONT face="Swis721 Blk BT"
size=1>Ph:413-458-9870</FONT></SPAN> </P>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
bldg-sim@gard.com [mailto:bldg-sim@gard.com] <B>On Behalf Of </B>Ramana
Koti<BR><B>Sent:</B> Monday, December 18, 2006 4:53 PM<BR><B>To:</B>
bldg-sim@gard.com<BR><B>Subject:</B> [bldg-sim] Modeling buildings with
natural ventilation for Appendix G<BR><BR></FONT></DIV>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><BR><BR></BLOCKQUOTE><PRE>==================
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