HOLIGILM
free software for illumination
calculation

TubeEff tool

TubeEff is a tool for rapid modeling the efficiency of a straight vertically oriented light pipe under various sky conditions.

The efficiency is calculated seperately for the diffuse light and direct sunligt. The calculation is (thanks to the analytical solution found) very fast.

Download: TubeEff_v1.zip.

Unzip file into any folder and run TubeEff_v1.exe.

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