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
P URALITA / URSA se compromete
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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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