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<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Dear the TRNSYS-users,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>I made a one-zone model with very thick walls by using
Type 56b in TRNBuild. I received a message from TRNBuild that,<o:p></o:p></span></font></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>"Error creating the wall
transfer function coefficients:<o:p></o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>Stability criteria not fulfilled<o:p></o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>Check layer definition (thickness,
ratio of conductivity/density)<o:p></o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>Please, check the INF-file for further
information."<o:p></o:p></span></font></i></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Then I checked the INF-file and found that<o:p></o:p></span></font></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>"** ERROR - STABILITY CRITERIA
FOR WALL TYPE BST_H_EXT NOT FULLFILLED<o:p></o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'><o:p> </o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'>CHECK LAYER VALUES <o:p></o:p></span></font></i></p>
<p class=MsoPlainText><i><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt;font-style:italic'> NO FILE GENERATED **" <o:p></o:p></span></font></i></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Could you please let me know what the stability
criteria is and what alternatives could solve this error? I could not find
information relevant to the problem in the TRNSYS manual. Thank you.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Best regards,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Poppong Sakulpipatsin, MSc.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Doctoral researcher, Building Services <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Faculty of Architecture, <st1:place w:st="on"><st1:PlaceName
w:st="on">Delft</st1:PlaceName> <st1:PlaceType w:st="on">University</st1:PlaceType></st1:place>
of Technology <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Berlageweg 1, 2628 CR <st1:City w:st="on">Delft</st1:City>,
The <st1:country-region w:st="on"><st1:place w:st="on">Netherlands</st1:place></st1:country-region>
<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Tel. +31-15-278-5955<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Fax +31-15-278-4178 <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>e-mail P.Sakulpipatsin@bk.tudelft.nl <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>http://bk.tudelft.nl/bt/installaties<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
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