<font face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" size="2">I have figured out a partial solution. The wall that is causing the error is never listed in the INF file. Thus look to see what walls a transfer coefficient were found. Whatever wall is not in the INF file but is used in your type 56 is the 'problem' wall. I removed the 'problem' wall completely and used a different but similar wall. I also noticed that if the problem wall had a low capacity, and had a boundary condition then that error would occur.<br><br>And yes, the error regarding the wrong version of PREBID is related to this error.<br><br>Let me know of any solutions you come up with.<br><br>Thanks,<br>Marshall<br><br><font color="#990099">-----"Nikolai Artmann" <nikolai.artmann@3-plan.ch> wrote: -----</nikolai.artmann@3-plan.ch></font><div><blockquote style="border-left: 2px solid black; padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;">To: "Marshall L Sweet/sweetml/O/VCU" <sweetml@vcu.edu>, <trnsys-users@cae.wisc.edu><br>From: "Nikolai Artmann" <nikolai.artmann@3-plan.ch><br>Date: 07/16/2009 04:13AM<br>Subject: AW: [SPAM] - [TRNSYS-users] HELP: Error creating the wall transfer coefficients - E-Mail in Betreffzeile gefunden<br><br>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]--><o:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City">
<o:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place">
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.E-MailFormatvorlage17
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:595.3pt 841.9pt;
margin:70.85pt 70.9pt 2.0cm 70.85pt;}
div.Section1
{page:Section1;}
-->
</style>
<div class="Section1">
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">Hello
<st1:city w:st="on"><st1:place w:st="on">Marshall
</st1:place></st1:city><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">I am getting the same
error message. Have you found a solution for this?
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">Also, there are no inputs
or outputs to/from Type 56.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">When I try to update the
building variable list, I get the following message:
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">This INF file seems to be
created with a wrong version of PREBID.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span lang="EN-GBstyle='font-size:10.0pt;font-family:Arial;color:navy'">Is this related to the problem
with the wall transfer coefficients?
<o:p></o:p></span></font></p>
<div>
<p class="MsoNormal" style=""><font color="navy" size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial; color: navy;" lang="EN-GB">Thanks, Nikolai
<o:p></o:p></span></font></p>
<p class="MsoNormal" style=""><font color="navy" size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial; color: navy;" lang="EN-GB"><o:p>
</o:p></span></font></p>
<p class="MsoNormal" style=""><font color="navy" size="3" face="Times New Roman"><span style="font-size: 12pt; color: navy;" lang="EN-GB"><o:p>
</o:p></span></font></p>
<p class="MsoNormal" style=""><strong><b><font color="navy" size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial; color: navy;" lang="EN-GB">Nikolai Artmann
</span></font></b></strong><font color="navy"><span style="color: navy;" lang="EN-GB"><o:p></o:p></span></font></p>
<div>
<p class="MsoNormal" style=""><font color="navy" size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial; color: navy;" lang="DE-CH">3-Plan Haustechnik AG, Winterthur
<br>
Telefon 052 / 234 70 66
<br>
Telefax 052 / 234 70 60
<br>
e-Mail:
</span></font><font color="navy"><span style="color: navy;" lang="DE-CH"><a href="mailto:nikolai.artmann@3-plan.ch" title="mailto:sandra.buehrer@3-plan.ch"><font title="mailto:sandra.buehrer@3-plan.ch" color="black" size="2" face="Arial"><span title="mailto:sandra.buehrer@3-plan.ch"><span style="font-size: 10pt; font-family: Arial; color: black;">nikolai.artmann@3-plan.ch
</span></span></font></a><o:p></o:p></span></font></p>
</div>
</div>
<p class="MsoNormal"><font color="navy" size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial; color: navy;"><o:p>
</o:p></span></font></p>
<div>
<div class="MsoNormal" style="text-align: center;" align="center"><font new="" roman="" size="3face="Times"><span style="font-size: 12pt;">
<hr tabindex="-1" align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">Von:
</span></font></b><font size="2face=Tahoma"><span style="font-size: 10pt; font-family: Tahoma;"> Marshall L
Sweet/sweetml/O/VCU [mailto:sweetml@vcu.edu]
<br>
<b><span style="font-weight: bold;">Gesendet:
</span></b> Dienstag, 14. Juli 2009
18:11
<br>
<b><span style="font-weight: bold;">An:
</span></b> trnsys-users@cae.wisc.edu
<br>
<b><span style="font-weight: bold;">Betreff:
</span></b> [SPAM] - [TRNSYS-users]
HELP: Error creating the wall transfer coefficients - E-Mail in Betreffzeile
gefunden
</span></font><o:p></o:p></p>
</div>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;"><o:p>
</o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Verdana"><span style="font-size: 10pt; font-family: Verdana;">TRNSYS Users,
<br>
<br>
I am using TRNBuild to create a type 56 building model. When I save the
building I get the following error message:
<br>
<br>
Error creating the wall transfer coefficients:
<br>
Unable to find a root after indication that a root exists.
<br>
Maybe the timebase is too small.
<br>
Please check the INF file for further information.
<br>
<br>
Upon checking the INF file the error is occurring at the end of the file
reading:
<br>
<br>
UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED
<br>
<br>
CHECK THE WALL TYPE AFTER THE LAST CALCULATED WALL
<br>
OFTEN THE WALL CAPACITY IS TO SMALL TO CALCULATE A TRANSFER FUNCTION !
<br>
<br>
CHECK ALSO YOUR TIMEBASE !
<br>
<br>
The wall type after the last calculated wall is a ceiling consisting of two
layers (wall_board and R-13 insulation). I have used this exact same wall
type in other models and it has worked fine. The coefficients (A, B, C,
and D) of the transfer function for this specific wall type are identical in
both models. The timebase is also the same. The capacity is
different but I have increased the capacity and I am still getting the same
error.
<br>
<br>
What is going on here? Where exactly is the capacity? What is meant
by "unable to find a root after indication that a root existed?"
<br>
<br>
Thanks in advance,
<br>
<br>
Marshall
<o:p></o:p></span></font></p>
</div>
</o:smarttagtype></o:smarttagtype></blockquote></div><div></div></font>