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<title>Software for Modelling Ventilation and Thermal Mass</title>
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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'>FYI<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Although the ground heat transfer in
EnergyPlus is more accurate, we’ve found that DOE-2.1e does a reasonable
job if you use Winklemann’s method for effective U-values, this has also
been updated again in the new Huang et al. method. <o:p></o:p></span></font></p>
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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'>This works best when driven by the
synthetic ground temps from TMY2. Results from a comparison against measured ground
temperatures for a Habitat House in Texas show good agreement with both methods.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jeff <o:p></o:p></span></font></p>
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8=| 8=) :=') 8=) 8=) 8=?<o:p></o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=2 color=navy
face="Times New Roman"><span style='font-size:10.0pt;color:navy'>Jeff S.
Haberl, Ph.D., P.E.............................jhaberl@esl.tamu.edu<o:p></o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=2 color=navy
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<p style='margin:0in;margin-bottom:.0001pt'><font size=2 color=navy
face="Times New Roman"><span style='font-size:10.0pt;color:navy'>Department of
Architecture.......................Lab Ph: 979-845-6065 <o:p></o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=2 color=navy
face="Times New Roman"><span style='font-size:10.0pt;color:navy'>Energy Systems
Laboratory.......................FAX: 979-862-2457 <o:p></o:p></span></font></p>
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w:st="on"><font color=navy><span style='color:navy'>Texas</span></font></st1:PlaceName></ns0:PlaceName></st1:place><font
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color=navy><span style='color:navy'>..............................77843-3581<o:p></o:p></span></font></span></font></p>
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color=navy><span style='color:navy'>.......................URL: www-esl.tamu.edu<o:p></o:p></span></font></span></font></p>
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<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>Tupper, Kendra<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, June 08, 2006
11:05 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] Software for
Modelling Ventilation and Thermal Mass</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I’m
currently working on a project in Berkeley, CA with an underground concrete
building with very high thermal mass. We</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>would like to avoid
air conditioning by mechanically ventilating the building at night, and would
like to model this for some preliminary results. </span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Does
anyone have any suggestions for an appropriate software program to model
this? </span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Are the ground heat transfer/thermal mass modeling
capabilities of DOE 2.2 are sufficient to model this project in eQuest or
Visual DOE?</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Right
now, we are planning on using EnergyPlus, but I wanted to make sure there
wasn’t another (less time consuming option) out there! </span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Does
anyone know if any of the EnergyPlus interfaces could handle this (i.e.</span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Design
Builder)?</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Thank
you!</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Kendra</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><a name=""><b><font size=3 color="#333333" face=Arial><span
style='font-size:12.0pt;font-family:Arial;color:#333333;font-weight:bold'>Kendra
Tupper </span></font></b></a>
<o:p></o:p></p>
<p><b><sup><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-weight:bold'> </span></font></sup></b><b><sup><font color="#333333"
face="Arial Bold"><span style='font-family:"Arial Bold";color:#333333;
font-weight:bold'>FLACK</span></font> </sup></b><b><sup><font color="#999999"
face="Arial Bold"><span style='font-family:"Arial Bold";color:#999999;
font-weight:bold'>+</span></font> </sup></b><b><sup><font color="#333333"
face="Arial Bold"><span style='font-family:"Arial Bold";color:#333333;
font-weight:bold'>KURTZ</span></font></sup></b> <b><sub><span
style='font-weight:bold'> </span></sub></b><o:p></o:p></p>
<p><font size=2 color="#333333" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333333'>405 Howard Street </span></font>
<font size=2 color="#333333"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#333333'>415.398.3833</span></font><b><span
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<font size=2 color="#333333"
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<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><a
href="http://www.flackandkurtz.com">http://www.flackandkurtz.com</a></span></font>
<a href="mailto:kendra.tupper@sf.fk.com"><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>kendra.tupper@sf.fk.com</span></font></a><o:p></o:p></p>
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<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
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