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Badreddine Dalal,<br>
You either have a wall that is too massive (usually too thick) for
the wall transfer function coefficients to be generated or you have
a wall that is not massive enough. If you look at the very end of
the *.inf file that is generated when you try to save your TRNBuild
project, you will see the transfer function coefficients of the
walls as they are being generated. Look at the last one in the list;
that is the wall that is causing problems. If you have ruled out
that its construction is too thermally massive (i.e. it has fairly
typical materials and overall thickness) then the problem may be
that the wall does not have enough mass. This is often true if you
are modeling doors (especially garage doors) or metal roofs. If this
is the case then you should consider the wall layers to be massless
(in the TRNBuild layer manager) and account only for their R value
(neglecting their ability to store energy)<br>
regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 06/10/2015 02:51, Dalal Badreddine
wrote:<br>
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cite="mid:CALXuD7q6uLbOiEgesuhkthhtpCQdnuZruFQtijxPQvZd2xuHUg@mail.gmail.com"
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<div class="gmail_default"
style="font-family:georgia,serif;font-size:large;color:rgb(0,0,0)">Hello,<br>
<br>
</div>
<div class="gmail_default"
style="font-family:georgia,serif;font-size:large;color:rgb(0,0,0)">I'm
having a problem with TRNBuild, whenever i want to save my
projet i get an error message that says : Error creating the
wall transfert function coefficients.. unable to find root
after indication that root exists.<br>
I've check the thickness of the wall and i tried changing the
timebase several times but i still get the same message. Can
you please tell me what could possibly be the problem? <br>
<br>
Thank you very much<br clear="all">
</div>
<br>
-- <br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
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