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[EnergyPlus_Support] Re: Temperature convergence

Dear Clarice 

It is Ece. I have come across the same problem as you had about the temperature convergence.In my model I have two transparent infrared walls which are void and assigned a convective heat transfer value as you did. Later I played with convergence value and the number of warm up days and still getting the same warnings and I really need to go forward ! is it safe to ignore those warnings???
nside surface heat balance did not converge with Max Temp Difference [C] =2.142E-003 vs Max Allowed Temp Diff [C] =2.000E-003
   **   ~~~   **  Environment=IZMIR - TUR IWEC Data WMO#=172180, at Simulation time=04/12 15:10 - 15:20
Thank u 
See u at school



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Clarice Bleil de Souza <claricebleil@...> wrote:
>
> Dear all,
> 
> I am running a simulation with several infrared transparent materials and mixing ventilation objects to transfer mass from one zone to the other when bounded by these infrared transparent materials.
> Whenever I associate convective heat transfer coefficients to the surfaces made of these materials (0.1W/m2-K), I get the following warning:
> 
> ** Warning ** Inside surface heat balance did not converge with Max Temp Difference [C] =2.138E-003 vs Max Allowed Temp Diff [C] =2.000E-003
>    **   ~~~   **  Environment=LONDON_WINTER, at Simulation time=02/21 07:06 - 07:12
> 
> Whenever I DO NOT associate convective heat transfer coefficients to these materials I do not get the warnings.
> 
> I do not think it is correct to assign infrared transparent materials without convective heat transfer coefficients so I decided to post you this.
> No matter what I set for the load and temperature convergences as well as for the number of warm up days and time steps I still carry on getting the same warnings when the convective heat transfer coefficients are there.
> 
> Can anyone give me a light about why is this happening?
> 
> Many thanks in advance
> 
> Clarice
>




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