New PDF release: Lighting & Controls: Transitioning to the Future

Optics

By Stan Walerczyk CLEP HCLP LC

This ebook is helping you are making sturdy lights judgements and may be a really important hands-on instrument for someone concerned with engineering, upkeep, procuring, specification, retrofits, remodels, and new development for inside or external lights functions. It offers very sensible how you can continue and replace present lighting fixtures platforms and the way to plot for the long run. Key issues comprise LED lighting fixtures, upkeep costs, Read more...

summary: This e-book is helping you're making strong lighting fixtures judgements and may be a truly valuable hands-on software for a person concerned with engineering, upkeep, procuring, specification, retrofits, remodels, and new building for inside or external lights purposes. It supplies very sensible how one can keep and replace latest lighting fixtures structures and the way to plot for the longer term. Key issues contain LED lighting fixtures, upkeep bills, reaching low strength density, risks of LED T8s, and human centric lights

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36 Lighting & Controls: Transitioning to the Future NO MAN’S LAND Going lamp-for-lamp with 28W or 25W F32T8s can save energy, but often after they are installed there is not a sufficient amount of potential savings to go with an optimal solution, such as with delamping with high lumen 32W F32T8s and high performance ballast. ” DELAMPING & Lamp-for-lamp COMPARISONS Following are just a few examples. 2x4 Lensed Troffer with 2 F34T12s or Basic Grade F32T8s These troffers can be retrofitted lamp-for-lamp or delamped.

26 Lighting & Controls: Transitioning to the Future Some people have stated that this is due to the Hawthorne Effect, but that is inaccurate, based on the scientific methodology. (As many readers already know, The Hawthorne Effect refers to a situation where subjects modify their behavior because they know they are being studied. The term comes from the Western Electric Hawthorne factory outside Chicago, where productivity improved when lighting was made brighter or dimmer, then slumped when the study was over.

Although most HPS lamps are rated for 24,000 hours, there are good 30,000-40,000-hour rated options. There are numerous long life MH lamps rated for 30,000 hours and longer. In the fluorescent world, lumens and life fight against each other. Up to a certain point, with better materials, both lumens and life can be improved. But at a certain level, if maximum lumens are desired, life must be sacrificed, and if maximum life is desired, lumens must be sacrificed. So, you can either have highest lumens or longest life.

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