<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Sek,<br>
There is a feature in TRNBuild that allows you to have Type56
automatically calculate a natural convection heat transfer coefficient
for interior floors, walls, and ceilings. You select this option when
you are defining the wall and its layers. The assumption is that
external surfaces (surfaces on the outside of the building) are
governed by forced convection, not natural convection and so if Type56
encounters an outside surface that has the "internal calculation"
option selected for the convective heat transfer coefficient
calculation method, it generates an error. What you need to do is look
for surface 5 in your building (the surface number is displayed next to
the "geosurf" field for each wall in the zone view), then check what
wall type has been selected for that surface, and make sure that the
"back side" convective heat transfer coefficient is set to "user
defined" and not to "internal calculation"<br>
Best,<br>
David<br>
<br>
<br>
#SEK JUN-YANG# wrote:
<blockquote
cite="mid:316ED1F87911FC479407CAB86CD9842437B011@MAIL24.student.main.ntu.edu.sg"
type="cite">
<meta content="text/html; charset=unicode" http-equiv="Content-Type">
<meta name="GENERATOR" content="MSHTML 8.00.6001.18854">
<div><font color="#000000" face="Arial" size="2">Dear All, </font></div>
<div> </div>
<div><font face="Arial" size="2">During my simulation I have
encountered an error message that reads: Error in automatic heat
transfer calculation for surface 5 or its adjacent surface. Automatic
heat transfer calculation is only allowed on surfaces within a zone.
Please check building input file (.bui). Please advice. Thank you.</font></div>
<div> </div>
<div><font face="Arial" size="2">Best Regards,</font></div>
<div><font face="Arial" size="2">Sek Jun-Yang</font></div>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@cae.wisc.edu">TRNSYS-users@cae.wisc.edu</a>
<a class="moz-txt-link-freetext" href="https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users">https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***********************************************************************
Thermal Energy System Specialists (TESS), LLC
David BRADLEY 22 N. Carroll Street - Suite 370
Partner Madison, WI 53703
USA
P: +1.608.274.2577
F: +1.608.278.1475
E-mail: <a class="moz-txt-link-abbreviated" href="mailto:bradley@tess-inc.com">bradley@tess-inc.com</a>
Web Pages: <a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a> and <a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a>
***********************************************************************</pre>
</body>
</html>