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[EnergyPlus_Support] Re: Thermal bridges input method

I think this would be a great idea, because it would be a dynamic.





--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, <josep.sole@...> wrote:
>
> In my opinion  the best way is introducing "virtual" sub surfaces (with a very small surface) where the thermal bridge exist and use a "virtual" construction conducing to  the same  thermal transmittance than the linear thermal transmittance calculated by 2D model * the thermal bridge length .
> 
> In clear U*S = Y*l
> 
> Where S is the (small) sub surface and l is the thermal bridge length.
> 
>  
> 
> It will be great if in E+ was possible to introduce a "thermal bridge" object defined by its length (starting and ending point; position) and the linear thermal transmittance (pre calculated with any 2D software)
> 
>  
> 
>  
> 
>  
> 
> Josep Solé
> URSA Insulation S.A- URALITA
> European Sustainibility & Technical Manager 
> Móvil +34 606 42 32 14
> 
> www.ursa.es <http://www.ursa.es/> 
> 
> www.ursainsulation.com <http://www.ursainsulation.com>  
> 
> www.uralita.com <http://www.uralita.com/> 
> 
>   
> P URALITA / URSA se compromete con el ahorro de energía. Antes de imprimir este mensaje asegúrese de que es necesario. 
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> ________________________________
> 
> De: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] En nombre de aymericnovel
> Enviado el: viernes, 18 de junio de 2010 6:30
> Para: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Asunto: [EnergyPlus_Support] Thermal bridges input method
> 
>  
> 
>   
> 
> Hi,
> 
> I was wondering if anyone had imagined a rigourous way to input thermal bridges in EPlus. So far I always integrate it within the U-value of the wall.
> But for large and complex projects, details are numerous and it is difficult to reach a correct approximation even using 2-D finite difference modelling. Or it would then be too long work to create all the required sub surfaces.
> 
> So I am just asking if anyone had a brilliant idea on how to solve that.
> 
> Thanks in advance
> Aymeric
>




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