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Registered: ‎01-11-2012
Post 1 of 5

Radiance - Illuminance values are overestimated?

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01-11-2012 05:55 AM

Hello there,

 

I am currently rendering a rather complex building with artificial lighting installed only. I imported my model from Ecotect to Radiance and then I got the lux levels calculated and then I imported that back to the Ecotect's grid.  However, the lux values that I got from Radiance/Ecotect are approximately ten times higher than what I measured from the actual building. I repeated the calculations for a number of times and I tried to switch on/off some lights as well. Yet, the lux calculation is still ten times higher than the actual measured values. Can anyone advise what's wrong? My model is built in millimeters. I am not sure if that would cause any problems?

 

Thanks.

 

v

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Post 2 of 5

Re: Radiance - Illuminance values are overestimated?

01-27-2012 02:11 PM in reply to: vil_lo

V,

 

did you consider the sky condition? It would be best if you had the exact time and date the light levels were taken, as well as the relative cloudiness of the sky.

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Post 3 of 5

Re: Radiance - Illuminance values are overestimated?

01-30-2012 08:42 PM in reply to: vil_lo

I always verify the normal faces that often leads to problems of analysis
Are you set appropriate values ​​of reflection?

Jose M Carralero.
ArqyT
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Post 4 of 5

Re: Radiance - Illuminance values are overestimated?

01-31-2012 12:04 AM in reply to: arqyt

Hi Jose,

 

Yes, indeed. I measured the reflection values on-site... 

 

v

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Post 5 of 5

Re: Radiance - Illuminance values are overestimated?

01-31-2012 12:06 AM in reply to: adam.barker

Dear adam.baker,

 

Yes. My sky condition is correct and I set the exact time, date and location when I did my simulation...

 

v

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