Issues with lighting power density?
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This post was last edited by amdintellive on 2011-1-25 at 16:23. When choosing lighting fixtures, should one consider ensuring that the illuminance meets the requirements, with a lighting power density that is close to the required level or significantly lower?
I don’t recall there being such a concept as lighting density! It’s only the uniformity; the original poster probably didn’t mean to ask this question. Then there’s only the issue of power density, right? I have worked on several projects; in the construction sector, the values are likely below the specified limits – not by a huge margin, but roughly 2/3 of the power density limit. In industrial applications, the requirement for low light levels is minimal; this is mainly due to new lighting technologies and processes, which make it easy to meet the power limits.
What the original poster is referring to is likely power density. The specification for such power density is merely a limit value; in other words, it must not be exceeded. If you can achieve the specified illuminance with the lowest possible power, then this value will naturally be low.