Dear Rebecca,<br /><br />The automatic heat transfer calculation can only be used for interior surfaces. For the exterior surfaces, you may use the recommended 64 kJ/hm2K, or we sometimes use a correlation in an equation block that is a function of the wind speed.<br /><br />Best regards,<br /><br />Matt Duffy<br /> <br /> <br /> <!--replyfwdwrap--><div style="background-image: url("http://webmail.fusemail.com/de/r_bg_img.gif"); background-position: center top; background-repeat: repeat-x;"><strong>----- Original Message -----</strong><br /><strong>From:</strong> "Rebecca Ward" <rmw61@cam.ac.uk> <br /><strong>Sent:</strong> Thu, June 16, 2011 7:02<br /><strong>Subject:</strong> [TRNSYS-users] Fatal Error in Automatic Heat Transfer Calculation<br /><br /><table cellspacing="5" width="100%"><tbody><tr><td><div class="PrivateMsgDiv"><!-- begin sanitized html --> <style type="text/css">
</style><div class="bodyclass"><div class="WordSection1"><p class="MsoNormal">Hi,</p><p class="MsoNormal"> </p><p class="MsoNormal">I’m having the following problem:</p><p class="MsoNormal"> </p><p class="MsoNormal"><i>*** Fatal Error at time : 0.000000</i></p><p class="MsoNormal"><i> Generated by Unit : 56</i></p><p class="MsoNormal"><i> Generated by Type : 56</i></p><p class="MsoNormal"><i> Message : Error in automatic heat transfer calculation for surface 6 or its adjacent surface!: Automatic heat transfer calculation is only allowed on surfaces within a zone. Please check building input file (.bui)!</i></p><p class="MsoNormal"> </p><p class="MsoNormal">I see fro!
m the forum that other people have had this problem before, so I’ve set all the wall convective heat transfer coefficients to user-defined, but I still get the same result. </p><p class="MsoNormal"> </p><p class="MsoNormal">Can anybody help?</p><p class="MsoNormal"> </p><p class="MsoNormal">Thanks,</p><p class="MsoNormal"> </p><p class="MsoNormal">Rebecca</p></div></div><!-- end sanitized html --> <hr size="1" noshade="noshade" /><pre>
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