Posted on June 2, 2010.
Power LED street lighting? What will the power consumption of the equivalent of the street light LED street 150watt HPSV. (Luminous flux must be the same as 150w HPSV about 14,000 lumens per unit)
I had some conflicting answers on the NET. Some say it is 106 Watt others say its 30W.
Please provide concrete evidence. If anyone has used these lights, then great. Your help is much appreciated.
Ballast HPS 150W consumes only 39 watts for an additional total power of 189 watts furniture. ( http://www.elights.com/philmedbashp.html ...
The following data sheet ( http://www.sunrainvision.com/admin/upimg ... lists the highest LED lighting fixture that I saw, 15,000 initial lumens, 14,000 words - if the equivalent to 150 W HPS . However, it lists the lamp assembly of 168 watts and watt ballast 30, so that total consumption is 198 watts of lighting, higher than the HPS.
This ( ... http://www.relume.com/docs/pdf/rt_datash is more typical of LED lighting. It does not list the HPS equivalence, but the downhole device consumes 160 watts to provide 6719 lumens.
It is quite obvious on a light base light, LEDs are not the panacea many energy savings seem to think they are. The argument I heard is that LEDs produce a whiter light which appears brighter to the eye, so that the lumen may be reduced while providing more 'perceived light.
Perhaps, but the lighting and many other codes and requirements to specify a value light, although the absence of a change of codes or a definitive study to an adjustment based on the perception of temperature color, using LEDs is the actual consumption of energy increases.
However, the lifetime of LEDs is a little longer, then there could be savings on maintenance, energy savings simply not.
Well, a 150 watt HPSV has an efficiency of 60 lumens / Watt, thats 60 x 150 = 9000 lumens.
The objective of the LED lighting is 200 lumens per watt in order to give the same light output, LED consumes 9000/200 = 45 Watts. Not a bad economy, if and only if, 200 lumens per watt can be achieved.
The highest rating I can find LED assembly output 200 Lumen claims 10 watts. You would need 70 of those 14,000 who match your lamp light, making a total consumption of 700 watts. It does not look like an economic alternative.
