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<title>Software for Modelling Ventilation and Thermal Mass</title>
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<p class=MsoNormal><font size=2 color=red face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:red'>The modeling of thermal mass is problematic
when using DOE-2 as it is a response method (Someone will correct me if Im
wrong) I would assume that energyplus might have an interface for this. But you
have the most suitable program already in your office and that is E+TA, the
room module. This is a forward finite element calculation method and most
suitable for modeling thermal mass. Dar I reference a paper I present at the
1993 ASHRAE meeting in <st1:City w:st="on"><st1:place w:st="on">Chicago</st1:place></st1:City>.
Also look at the work Jim Braun has completed over the past years.<o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><b><font size=2 face=Tahoma><span
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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 9:05
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>
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<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p style='margin-left:.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>I’m currently working on a project in <st1:place
w:st="on"><st1:City w:st="on">Berkeley</st1:City>, <st1:State w:st="on">CA</st1:State></st1:place>
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 style='margin-left:.5in'><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 style='margin-left:.5in'><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 style='margin-left:.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Thank you!</span></font><o:p></o:p></p>
<p style='margin-left:.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Kendra</span></font><o:p></o:p></p>
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<p style='margin-left:.5in'><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 style='margin-left:.5in'><b><sup><font size=3 face="Times New Roman"><span
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