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Light Tubes

Has anyone had any success modeling a light tube such as products from Solatube? I was trying to look for some best practices. 

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At VELUX, we use a daylight photometer per IENSA guidelines to measure the lumen output of tubular skylights.  Then with this output, we generate ies files for each sun angle, which are used within Lighting Analysis programs.   You can complete your own daylight simulations using the Lighting Analysis software with VELUX Commercial 14" and 22" ies files at the following link.

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