Re: [TRNSYS-users] TRNSYS-users Digest, Vol 67, Issue 12

[David Bradley <bradley@tess-inc.com>]

Mariana,
  Do any of your walls have the "automatic heat transfer coefficient" calculation option turned on? If so, try to (temporarily) set them all to constant coefficients. TRNBuild/Type56 doesn't allow that mode to be used on the outside surface of an EXTERNAL wall. Years ago, I did have the problem where I had all walls set with constant heat transfer coefficients and still got that error but the bug was corrected in a quite early release of Trnsys16 (2005 at the latest).
Best,
 David

On 7/6/2010 16:05, ghetu mariana wrote:

Hello,

 

Has anyone had this kind of error message?

“Error in automatic heat transfer calculation for surface 399 or its adjacent surface!: Automatic heat transfer calculation is only allowed on surfaces within a zone. Please check building input file.”

 

Surface 399 is adjacent and the wall time has the front  convective heat transfer coefficient set to 11 kJ/h,m2K and the back to 12 kJ/h,m2K. It’s supposed to be working this way but I have the same error message.

 

Thanks in advance, 

Mariana GHETU

---

From: "trnsys-users-request@cae.wisc.edu" <trnsys-users-request@cae.wisc.edu>
To: trnsys-users@cae.wisc.edu
Sent: Tue, 6 July, 2010 20:20:51
Subject: TRNSYS-users Digest, Vol 67, Issue 12

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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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