[TRNSYS-users] Stability criteria not fullfilled

[leen peeters]

Truong,
you can use that approach, but make sure that you adapt both the
conductivity and the thermal capacity. As long as you do not use active
layers, you should be OK.
Splitting your wall into two walls of 20 cm thickness is indeed another
options you can try

Leen

On Wed, Jun 27, 2012 at 9:31 AM, <struong at student.ulg.ac.be> wrote:

> Dear TRNSYS-users,
>
> I'm currently encoding my building in TRNBuild and in a wall I have a
> layer of cellulose of 40 cm thickness. When i try to save my project, I get
> the error message "Stability criteria not fullfilled" (see picture in
> attached file "error.JPG). If i reduce this thickness to 20 cm, the problem
> is solved so it seems that it is a problem due to the thickness of the
> layer. How can I solve the problem? I'm thinking about encoding a thickness
> of 20 cm and divide the conductivity of the material by 2 in order to have
> an identical u-value for my wall but I don't know if it is correct! Indeed
> if I do so, the inertia of my wall (hence my building) will not be the
> same! Do you have some advice?
>
> Best regards,
>
> Truong Van Quynh Stéphan
> 2 ème Master STE
> Gembloux Agro Bio-Tech
> Belgium
>
>
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>
>
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