Quote:
Originally posted by harrad
The chart you quoted lists the mean (average) output of a 1KW HPS at 126K Lumens, however as presented the FluoreX output @ 8255 Lumens is for a new lamp. Actual output on a new 1KW HPS is 140K lumens. That puts BOTH lamps with ballast losses included at 127 Lumens/Watt new. Just got to make sure your comparing apples to apples!
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Hey, I do respect you as an expert in this category but... Isn't the mean output for a flourescent equivelent to its new lamp output? In other words, don't floros hold their intensity throughout their life unlike HPS and MH? If so, then comparing means to means would still leave the floro ahead 127 to 114. If not, then yes, you're right. Either way though, I'd say that those fixtures are pretty damn effiecient.
Oh one other thing. I've always wondered, do you know how many lumens come off of a pair of car headlights? What about the HID ones?
Peace,
Born420