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Re: [TRNSYS-users] Type56a: Automatic Heat Transfer Calculation Error



Dear Paul

Internal calculation is not ok for back surface of external wall.
You most also choose "userdefined" calculation for
that Wall.

Best regards

Je serai absent du 04 Décembre 2009 au 04 Janvier 2010
I will be absent from 04th December 2009 to 04th January 2010
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Adrien JEZEQUEL
Simulations Thermiques Dynamiques
ITF
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73230 St Alban Leysse
FRANCE
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PAUL COALES a écrit :
Hi Adrien,

I select "internal calculation" for  "Convective Heat Transfer Coefficient of Wall" for all my wall types; back and front.  Is this wrong?

Kind Regards

Paul

--- On Mon, 23/11/09, Adrien JEZEQUEL - ITF <a.jezequel@itf.biz> wrote:

From: Adrien JEZEQUEL - ITF <a.jezequel@itf.biz>
Subject: Re: [TRNSYS-users] Type56a: Automatic Heat Transfer Calculation Error
To: "PAUL COALES" <coalespr@btinternet.com>
Cc: trnsys-users@cae.wisc.edu
Date: Monday, 23 November, 2009, 8:27

Dear Paul

Your issue concerns Convective Heat Transfer
Coefficient of wall in wall type manager.
You certainly select an internal calculation for an external wall in your bui file, instead of userdefined.

Message error indicates that automatic heat transfer calculation is only allowed on surface within a zone.

Best regards

Je serai absent du 04 Décembre 2009 au 04 Janvier 2010
I will be absent from 04th December 2009 to 04th January 2010
www.itf.biz
www.itf.biz
Adrien JEZEQUEL
Simulations Thermiques Dynamiques
ITF
62, Rue du Bolliet
73230 St Alban Leysse
FRANCE
Phone :
Fax :
Mail:
+33(0) 479 750 029
+33(0) 479 852 122
a.jezequel@itf.biz
Afin de contribuer au respect de l'environnement, merci de n'imprimer cet e-mail que si nécessaire
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PAUL COALES a écrit :
Hi All

I have an error reported on a simulation run and need some suggestions as to what could be going wrong.

Fatal error at time 0.00
Generated by unit 3
Generated by Type56a

Message Error in automatic heat transfer calcualtation for surface 7 or it's adjacent surface.  Automatic heat transfer calculation is only allowed on surface within a zone.  Please check input file .bui

This is different to the example posted erlier in the year.  I am modeling underfloor heating here.

I tried deleting the surface 7 but this does not change the report.  I still refers to surface 7.

Any clues?  I can forward the .bui file if interested.

Kind Regards
Paul

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