Gallery of Lights
Lamps => Modern => Topic started by: Vince on April 11, 2010, 04:05:37 PM
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Yup. My dad told me today that the utility here is going to replace all HPS streetlights by LEDs! :'( The sad news is that I will have to deal with this dim and glaring light too, but the good news is that I will possibly have tons of streetlights with this conversion!! ;D
Oh well, a blessing in disguise!
Other thing, I will maybe have a few LED units (like defective ones) to experiment with!
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Well think of this as this honestly always happened for years....
from Carbon to incandescent
From incandescent to MV
From MV to HPS....
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It's been happening in my old city too,
MV-HPS
HPS-MH
HPS-LED
They just can't be content with anything they have, "oh we want HPS, oh now we want LED". It drives me crazy sometimes. ::)
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NOOOOOOO >:( :( :o ::) :P :-[ :'( Why did they have to do that, WHY? You should try to stop them maybe a petition or talk to the local counsels, explain HPS is more efficient then LED and LEDs are known to fail tell them its a huge waste to throw away working lights. I have talked to the local street light company here and they hate LED and Induction. But if all else fails you can get alot of old lights like B2255.
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That's pretty bad Vince if they do decide to switch to LEDs but you can try to see if you can save some of those old lights like how gailgrove suggested, maybe even that OV14B.
@Gailgrove did you ask your utility company when did they changeover from MV and when HPS started to appear?
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Fortunately, in Israel, we have no LED streetlights at all! The only exterior lighting applications in Israel that uses LEDs are: color washing and decoration of exterior structures. For example: Philips/Color Kineticks RGB LED floods are used to light small buildings and architectures and are changing their colors. Also colored LEDs used to decorate buildings and wide bridges with tunnels under them and to light the roads inside the tunnels with colored lighting.
In Haifa the municipality did a LED street lighting test at the edge of "Saar Haalia" neighborhood with two flat white LED streetlights. They were produced the same amount of light as a street light with a 125W /DX MV lamps. After several months the municipality removed them and returned the former two AEG Koffer 150 HPS fixtures with one 150W-250W HPS lamp each.
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Unfotunately, we live in a throw away society where many people think new is better but it's really not and getting through to city council members is near impossible.
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For SOME things...new IS better.....while other new things are not better....it depends on what you are talking about...in general.......
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I meant streetlighting in general.
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It is better to start using HG-free HPS lamps in street lights instead of using LEDs. These HPS lamps don't contain mercury, don't cycles at EOL, and also are much more efficient because they have 300 torr Xenon pressure instead of 80 torr of regular HPS, which result in 140 lm/w max. 10 lm/w less then the european 300 torr Xenon HPS lamps with mercury, but still much more efficient then a regular HPS lamps.
These HG-free HPS lamps have 2100K and 18% CRI compared to 2000K and 25% CRI of standard HPS lamps.
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But I have known that lower mercury in HPS means shorter life in HPS....my friend who works as a lineman has found Philips HPS from 1997 (before the ALTO brand which is a lower mercury ones) had lasted 10 years in average! But starting 1998 and on had Philips ALTOs which are lower mercury amount in them, has a life span of 2-4 years.....I can bet the HG-Free HPS would really make lamp life go down even MORE! And the color rendering would be worse too...
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Jace: Don't compare the low mercury HPS with the HG-free HPS ones.
ALTO HPS lamps have the same characteristics as regular HPS lamps but with much lower mercury dose.
The HG-free HPS lamps is a different story. They have 300 torr xenon pressure compare to 50-80 torr of the regular and ALTO HPS lamps and a longer and thinner arctube then both lamps. Also they have an antenna for reliable ignition on standard ignitors. The higher xenon pressure in HG-free HPS lamps, like in the european Super HPS lamps with mercury, preserves the electrodes for longer while also greatly improves lumen maintenance so these lamps have 95% of their initial brightness after 24,000 hours. Therefore they have more life then standard HPS lamps. Usually they are rated for 28,000 hours and the european Philips Master SON PIA HG-Free HPS lamps have a rated life of even 32,000 to 50% failures.
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at mercuryvaporrocks I had a petition to try to stop them replacing the Twist-Paks lights on my street with cobra heads, while it never worked I meet with the local counslers and they didn`t like them either , however it was up to the works department (I also meet with) but in the end they where replaced >:(
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Here in Alaska the LEDs have been popping up like dandelions. Fairbanks started out with a test installation in high profile areas, and now have been putting them up anytime roadwork or street light work is done. Anchorage is replacing 16,000 HPS lights with LEDs. Valdez is replacing it's 343 street lights with LEDs. Even the village of Tanana is replacing it's 8 HPS lights with LEDs, and adding another 14 more.
On the bright side, the State (who maintains most of the roads and streetlights in my area) is so far staying faithful to their HPS M400s.
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I recently saw some LED lights that have popped up on some side streets in Vaughan, ON which replaced some HPS cobras.
The good thing though is that none of the other towns and cities are installing LEDs or any other new light sources as far as I know currently.