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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=142571418-23072007>Dana</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=142571418-23072007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=142571418-23072007>I haven't simulated any hospitals under Appendix G, but
I have done a number of pharmaceutical and bio-research labs, which had similar
specs and requirements. </SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=142571418-23072007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=142571418-23072007>My assumption is that the project intends to seek LEED
certification under LEED-NC 2.2 since you are doing an Appendix G
baseline.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=142571418-23072007><FONT face=Arial color=#0000ff size=2>I also
assume that the CUP currently exists and its capacity will not be expanded to
meet the demands of the addition, therefore you will treat the chilled and hot
water from the CUP as purchased cooling and heating in the proposed design
consistent with G3.1.1.1 (this section only mentions purchased heat, but I think
it is reasonable to apply the same approach to campus chilled
water).</FONT></SPAN></DIV>
<DIV><SPAN class=142571418-23072007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=142571418-23072007><FONT face=Arial color=#0000ff size=2>I
would classify the building type as Nonresidential and 3 Floors or Less &
< 75,000 sf, which would require System 3 to be used. Even if you consider
the addition to be part of the larger building, this approach is still
consistent with Section G3.1.1 Exception (a). </FONT></SPAN></DIV>
<DIV><SPAN class=142571418-23072007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=142571418-23072007><FONT>I'm not sure why you don</FONT></SPAN>'<SPAN
class=142571418-23072007>t consider this to be a fair comparison since clearly
there is a design decision to be made about connecting the addition to the
existing CUP versus independent cooling and heating
systems.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=142571418-23072007><FONT face=Arial color=#0000ff size=2>Russ
Taylor</FONT></SPAN></DIV>
<DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=en-us><FONT face="Lucida Console" color=#808080
size=2>_______________________________________________________________________________</FONT></SPAN>
</P>
<P><SPAN lang=en-us><FONT face="Lucida Console" color=#808080 size=2>Russell D
Taylor, Ph.D.</FONT></SPAN> <BR><SPAN lang=en-us><FONT face="Lucida Console"
color=#808080 size=2>UTRC | 411 Silver Lane, MS 129-85 | East Hartford, CT 06108
| Ph: (860) 610-7485</FONT></SPAN> <BR><SPAN lang=en-us><FONT
face="Lucida Console" color=#808080
size=2>_______________________________________________________________________________</FONT></SPAN>
</P></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>Dana Troy<BR><B>Sent:</B> Monday,
July 23, 2007 1:25 PM<BR><B>To:</B> BLDG-SIM@gard.com<BR><B>Subject:</B>
[BLDG-SIM] ASHRAE 90.1-2004 App. G, Hospital Baseline<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=722420417-23072007><FONT face=Arial size=2>Hello
all,</FONT></SPAN></DIV>
<DIV><SPAN class=722420417-23072007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=722420417-23072007><FONT face=Arial size=2>I am currently
working on the ASHRAE 90.1-2004, Appendix G baseline model of a hospital in
Oregon. The part of the building being analyzed is a 40,000 sf, 3 story addition
to an already existing building of approximately 90,000 sf. I am having some
issues determining what to use for the baseline HVAC system. Here are some key
details of the current as-designed building:</FONT></SPAN></DIV>
<UL>
<LI><SPAN class=722420417-23072007><FONT face=Arial size=2>Reheat fan
system</FONT></SPAN>
<LI><SPAN class=722420417-23072007><FONT face=Arial size=2>Constant volume,
60,000 cfm</FONT></SPAN>
<LI><SPAN class=722420417-23072007><FONT face=Arial size=2>100% outside
air</FONT></SPAN>
<LI><SPAN class=722420417-23072007><FONT face=Arial size=2>Draws heat from two
boilers and two chiller in <STRONG><FONT color=#0000ff>a central utility plant
that also serves the rest of the
building</FONT></STRONG></FONT></SPAN></LI></UL>
<DIV><SPAN class=722420417-23072007><FONT face=Arial size=2>These design
parameters lead to some confusion when selecting the HVAC baseline systems. For
example:</FONT></SPAN></DIV>
<UL>
<LI><SPAN class=722420417-23072007><FONT face=Arial size=2><FONT
color=#0000ff><STRONG>Since the addition is served by a system that serves the
<EM>entire </EM>building, should building be modeled as an ~130,000 sf
building?</STRONG> </FONT>This would make it System 5 under Table G3.1.1A.
Problems with this are that it calls it out to be a PVAV w/ reheat, which is
not a legitimate comparison. If the baseline is supposed to be PVAV, the OSA
requirements need to be the same anyways (G3.1.2.5), therefore effectively
making it a constant volume system.</FONT></SPAN>
<LI><SPAN class=722420417-23072007><FONT face=Arial color=#0000ff size=2><FONT
color=#000000><STRONG><FONT color=#0000ff>Should the sf be taken relative to
only the addition (40,000 sf)?</FONT> </STRONG>This is also not a fair
comparison between the two systems because the addition draws heating and
cooling from a system designed for a much larger square footage.</FONT>
</FONT></SPAN></LI></UL>
<DIV><SPAN class=722420417-23072007><FONT face=Arial size=2>I guess my main
questions are <STRONG><FONT color=#0000ff>if anyone has dealt with large,
constant volume, 100% OSA systems</FONT></STRONG> <STRONG><FONT
color=#0000ff>and their baseline HVAC systems</FONT></STRONG> and if anyone has
<STRONG><FONT color=#0000ff>modeled additions that are served by a larger
CUP.</FONT></STRONG></FONT></SPAN></DIV>
<DIV><FONT color=#0000ff><SPAN class=722420417-23072007><STRONG><FONT face=Arial
color=#000000 size=2></FONT></STRONG></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff><SPAN class=722420417-23072007><FONT face=Arial
color=#000000 size=2>Thanks for any help in advance.</FONT></SPAN></FONT></DIV>
<DIV><FONT color=#0000ff><SPAN class=722420417-23072007><FONT face=Arial
color=#000000 size=2></FONT></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff><SPAN class=722420417-23072007><FONT face=Arial
size=2></FONT><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT>
<DIV><FONT face=Arial size=2></FONT><BR><STRONG><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#000000>Dana Troy<SPAN
class=722420417-23072007>, EIT</SPAN></FONT></SPAN></STRONG></DIV>
<DIV><STRONG><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></STRONG><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN><FONT color=#000000><FONT
face=Arial size=2>Energy Analyst </FONT><BR><BR></FONT><A
href="http://www.glumac.com/"><FONT color=#000000><IMG
src="http://www.glumac.com/glumacsig.gif" border=0 NOSEND="1"></FONT></A><FONT
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<DIV><FONT color=#000000></FONT></DIV>
<DIV><FONT color=#000000><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">320 SW
Washington, Suite 200</SPAN><BR><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Portland,
OR 97204-2640</SPAN><BR><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">T.
503.227.5280<SPAN style="mso-spacerun: yes"> </SPAN>F.
503.274.7674</SPAN></FONT></DIV>
<DIV><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#000000>D. 503.345.6286</FONT><BR><BR><STRONG><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Thinking. Inside the
building.</SPAN></STRONG><BR><STRONG><SPAN
style="FONT-WEIGHT: normal; FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"><A
href="http://www.glumac.com/">www.glumac.com</A></SPAN></STRONG></SPAN>
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