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- W2006289930 abstract "As energy efficiency becomes more and more important, light-emitting diodes (LEDs) are a promising alternative totraditional lighting. Indeed, the energy efficiency of LEDs is still improving as their luminosity is modulated by current.Moreover, for applications such as exterior lamp posts, their small size, directionality, colors and high frequencyresponse allow to combine them and provide design possibilities which are impossible with any other light source.However, as any lamp, LEDs have a lumen depreciation which is a function of both current and temperature. Thus, totake advantage of the full characteristics of LEDs, LED luminaire longevity strategies must be carefully studied andplanned, especially since the IES and CIE guidelines state clearly that the luminaire must maintain the ratedrecommended light level until the end of the system's operating life. The recommended approach for LED luminairespecification is therefore to use the end-of-life light level when evaluating the luminaire. Different power supplystrategies have been simulated to determine which one maximizes energy saving and lifetime. With these results, itappears that active control can save at least 25% in energy, but the best strategy cannot be determined because ofuncertainties in luminosity degradation models." @default.
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- W2006289930 date "2010-08-19" @default.
- W2006289930 modified "2023-09-23" @default.
- W2006289930 title "LED luminaire longevity strategy models comparison" @default.
- W2006289930 doi "https://doi.org/10.1117/12.859901" @default.
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