[Radiance-general] HIgh illuminance values.

[Rob Guglielmetti]

On Apr 22, 2009, at 7:42 PM, G V DEEPAK wrote:
> The illuminance values for the blind angles of 0 degrees and 45  
> degrees seem to be fine.
> However,  I am getting very high illuminance values for the 15  
> degree and 30 degree blind angles for the sensor point which is  
> closest to the window .
> The values are ranging from 8000 lux to 20,000 lux. which I guess  
> are totally unreasonable results when we have blinds placed in a room.
>
> These values are higher for the blind angles of 15 degrees and 30  
> degrees than for the completely open blinds (zero blind angle gives  
> us illuminance of 2500 lx).
>
> Any idea why we are getting these high illuminance values for 15 and  
> 30 degree blind angles?

Is this for a single time of day/sun angle? My guess is that the  
steeper slat angles are letting some direct sun to strike your sensor  
points close to the window. Check the slat spacing, and the blind  
section overall.

- Rob Guglielmetti