[Bldg-sim] Double Facades - EPlus

[Pedro Peixeiro]

Hi Francisco.

If your facade is made up of only opaque construction and/or you want to 
make a simple study of it, you can check the 
SurfaceProperty:ExteriorNaturalVentedCavity. For more detailed 
modelling, or if you facade is made of glassings, you should model the 
facade as a independent zone, and use airflownetwork objects to setup 
openings, virtual partitions and airflow.
Convection on the outside of the facade shouldn't be much of a problem, 
the tricky one is the inside convection. EPlus doens't have an algorithm 
specified for these kinds of building elements, so you'll have to choose 
the one that best suits your needs.

Pedro.



On 22-03-2011 18:44, Francisco Massucci wrote:
> Hi,
>   Does anyone knows how to modeling double facedes in EnergyPlus? Like 
> a lightweight ceramic facede, located 10cm away from a traditional 
> concrete masonry wall. I figured if modeling an thin extra zone could 
> be work, or if its possible to work with the second facede only as a 
> huge shading device. I think the most important in these cases is the 
> amount of natural convection that occur around the exterior of the 
> building but none of my proposals, this fact is taken into account.
> I appreciate if anyone can help me,
> Sorry about my bad english.
>
> Francisco Massucci
> Architect - São Paulo - Brasil
>
>
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