[TRNSYS-users] transfer function

[David BRADLEY]

Matteo,
   The INF file says that it is wall EW that is giving you the problem. 
I don't see anything really obviously wrong about the wall definition. 
The zero thickness layer in this case isn't a problem because that layer 
material is defined as being resistive only (ie no capacitance). My 
guess is that the 20cm of BLOCCHI_PIENI_20CM_CLS_800 is causing the 
problem and that you have to increase the time base. The time base is 
increased in the TRNBuild "outputs" window.
Best,
  David



On 7/24/2012 10:37, 64 at enetec.it wrote:
>
> Dear Trnsys Users,
>
> using  type56, when I set the layers of my external wall type, while I 
> am trying to save, I receive the following message:
>
> error creating transfer function coefficient: stability criteria not 
> fulfilled. Check layer definition....
>
> I attach the info file for further information.
>
> Moreover in trnsys 17.1 where I can find the "calculate transfer 
> function" window, where I can decide the timebase.
>
> Thank you for your availability.
>
> Regards
>
> Matteo
>
> *ing. Matteo Mariotti*
>
> **
>
> *Enetec S.r.l.*
>
> *Ingegneria Energetica e Realizzazioni Impanti***
>
> ROMA Via del Maggiolino, 125 - 00155 Roma
>
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>
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>
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> <mailto:sergio.palmitessa at guest.telecomitalia.it>/*
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>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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