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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'>Delphine, <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 lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>This
type of problem is best investigated in a COMIS stand-alone simulation (without
TRNSYS) first. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>This
way, you can better understand the airflow modelling phenomena alone (without
the influence from thermal problems) - which is actually one of the big
advantages of using this coupling (you can run the COMIS part without the
TRNSYS side - just click on the COMIS project window (*.cpf) and run a
COMIS simulation with fixed temperatures / wind / etc. Then you can easily
determine the influence of each phenomenon. At the end, go back to the coupled
simulation (.tpf) ). <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>If
you need help on the air flow part, you can use the expertise of the quite
active COMIS user community :<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><a
href="http://groups.yahoo.com/group/comis">http://groups.yahoo.com/group/comis</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>You
will find almost 500 COMIS users and the world's top-experts on air flow
modelling on this group. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>Werner
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'>PS:
A similar group exists for CONTAM users: <a
href="http://groups.yahoo.com/group/CONTAM/">http://groups.yahoo.com/group/CONTAM/</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:EN-GB'><o:p> </o:p></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'>De :</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
trnsys-users-bounces@engr.wisc.edu [mailto:trnsys-users-bounces@engr.wisc.edu] <b><span
style='font-weight:bold'>De la part de</span></b> OCTRUE, Delphine<br>
<b><span style='font-weight:bold'>Envoyé :</span></b> vendredi 28 juillet
2006 17:21<br>
<b><span style='font-weight:bold'>À :</span></b>
trnsys-users@engr.wisc.edu<br>
<b><span style='font-weight:bold'>Objet :</span></b> [TRNSYS-users]
problem with comis</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>
<div>
<div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello!</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I try to design a double skin facade with Trnsys and
Comis.I have cut the double skin facade in 4 zones (corresponding to the 4
storeys). The double skin facade has no mecanical ventilation but
has two openings downward and upward. I don't know how modelize these
openings : I want to add a grid before the air incomming, so I use the
type "duct, entry with screen" in comis. But my simulation in trnsys
gives me very high coupling air flow (20 000 kg/h) and no infiltration
(although the % of screen is 90). I think it's not good because in
reality, there are dynamic loss which drop the airflow! Their is also no
temperature stratification. When I replace this duct with an open window, I
have more accurate results : air coupling flow with 6000kg/h (but it seems
still high), infiltration in the extremity of facade and temperature
stratification.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Have somebody already worked on double skin facade? Or does
someone know why the screen gives me bad results?</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If you need more information, ask me.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks a lot for your answers</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Best regards</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Delphine</span></font><o:p></o:p></p>
</div>
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