perforated shadings

jamo0312see · Posts: 83

how can i model perforated metal panels? and how can i include them in thermal calculations in example external wall constructions.

my problem is including perforated metal panels in front of Fenestrations and to include it in thermal and shading calculations.

thank you,
Jam

Andy Tindale · Posts: 2619 Location: Stroud

Jam,

You could perhaps model then using Window shading with an external shading position. Set the transmission of the shade to the open area fraction of the panels.

These will be included in solar and thermal calcs.

Andy

jamo0312see · Posts: 83

external shading? using component blocks?

jessica.holz@umowlai.com. · Posts: 3

Hi,

I'm having the same issue. We have used component blocks to create external shading elements. These elements are meant to be made out of perforated metal, however, there does not seem to be any way of perforating these elements or making them 'less opaque'.
This is imperative to the model because the shading sits in front of and covers all of the windows so if it's not perforated then we effectively have no light penetration at all.

Is it possible to do this in DB or do you know of something that would have a similiar effect on the energy consumption and daylight calcs?

Thanks very much.

Jessica

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