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Dear Catherine, dear TRNSYS Users,<br>
<br>
To solve your problem, you may increase TRNLIB TIMEBASE (Edit Building
- OUTPUTS - TIMEBASE (on the top left hand corner of the window)) to
allow automatic heat transfer calculation, or create a new material
with same phyical properties and lower thickness.<br>
<br>
Best regards, Adrien<br>
<br>
<br>
Catherine Massart a écrit :
<blockquote
cite="mid:22e7cca30807310623j6e2c608cw508f2527a9a7b7e7@mail.gmail.com"
type="cite">
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<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Dear TRNSYS users</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">I want to make simulations on
highly insulated buildings.</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Some of the walls I created bring
a bug.</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"><strong><u>« Error creating the
wall transfer function coefficients :</u></strong></span></i></div>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"><strong><u>Stability criteria not
fullfilled</u></strong></span></i></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Check layer definition (thickness,
ratio of conductivity/density)</span></i></p>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Please check the INF-file for
further information »</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">I heard this could be solved by
changing the density and capacity of the layer that causes the problem
(here, a ceiling wood structure insulated with 40cm of wood fiber
pannels (Steico))</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">But I cannot do this because I
want to evaluate the impact of the inertia on the inside temperatures.</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">I tried by deviding the material
in 2 layers: one would have the same inertia and the other, massless,
would bring the thermical resistance. It doesn't work, stability
criteria is still not fullfilled...</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Can someone help me?</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Thanks a lot</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US"></span></i> </div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">Catherine Massart</span></i></div>
<div class="MsoNormal" style="margin: 0cm 0cm 0pt;"><i style=""><span
style="color: purple;" lang="EN-US">UCL-Belgium</span></i></div>
</div>
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</pre>
</blockquote>
<br>
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<center><a href="http://www.itf.biz"><img
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<td><font color="#969696" face="Tahoma" size="2">Adrien JEZEQUEL<br>
Simulations Thermiques Dynamiques<br>
</font><font color="#3300ff" face="Tahoma" size="2">ITF
(Ingénierie Tous Fluides)<br>
87, route de Chambéry<br>
73230 ST ALBAN EN LEYSSE<br>
FRANCE<br>
Tel: 04.79.75.00.29<br>
Website: <a href="http://www.itf.biz">www.itf.biz</a><br>
Mail : <a class="moz-txt-link-freetext"
href="mailto:a.jezequel@itf.biz">a.jezequel@itf.biz</a><br>
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