[Radiance-general] Fritted glass script for Radiance

[Greg Ward]

Hi Ted,

If you've been following the discussion, you'll know that you cannot  
use the output of Optics5 directly in Radiance and expect to get good  
results. You need to use optics2rad or the glaze script to arrive at  
a good model of your glazing system.

Best,
-Greg

> From: biro0013 at umn.edu
> Date: January 15, 2009 8:55:59 PM PST
>
> Dear Galen,
>
> I have been following your discussion regarding modeling of glazing  
> types and was hoping you might be able to point me in the right  
> direction. Your discussion so far seems rather relevant to the  
> issue with which I am concerned. I have little familiarity with  
> Radiance or writing scripts for Radiance, however.
>
> I am doing a comparative study of glazing types for illuminance  
> levels on the interior of a large atrium space lighted by a barrel  
> vaulted skylight. I am using Ecotect and exporting to Radiance,  
> allowing Radiance to render the image and then re-importing the  
> point data back into Ecotect for graphic representation and  
> interpretation. The specific glass types I am trying to model are  
> Viracon's VE340, VE340 with 30% grey frit and VE340 with 50% grey  
> frit. Viracon provided the .rad files from Optics, but the results  
> I am obtaining don't seem to correlate. I suspect it has something  
> to do with the Optics output and how it deals with a frit. I have  
> attached the files and was hoping you could provide some insight.
>
> Sincerely,
>
> Ted Biro