Mirror material in IES Radiance,

[david373348]

Hi,

I was surprised that mirror materials in radiance can't be modelled in IES radiance. I know that high specularity plastic can do most of the task of surfaces with high reflectances, but, in that sense it can not give good a good approach in quasi-mirror surface as solartubes or heliostats in roofs.

My principal question is, can I force a surface to be mirror-surface in IES radiance? I was trying to change the *.map surface but each time I do the modelling it change the "mirror" surface into "plastic" again.

Maybe another step is required outside IES to change this to then do IESradiance and model a mirror surface. Since "mirror" is one of the four default materials types in Radiance, IES should take it with no problem.

thanks in advance for any advice on this.

David Garcia Sanchez

[Artelia]

Hi,
I would love to find an answer to this topic. In my case I have to take the sun reflexion in a building with high reflective glazing. So the mirror is what in need.

Somebody can help ?

Thanks a lot !

[Megan]

Try making the surface glass, set the glass type to "trans", and set the specularity at 0.999. Using a mirror (type metal) with 0 roughness and the same 0.999 specularity should also work, but appears it may not have in the past ??

Since you're working on a building with mirror-like glazing, I'd suggest the first option anyway.

[Artelia]

Hi,
Thank you, the second solution did work.
Anyway, will Radiance IES include miror in futur version ?

Bye