Gallery of Lights
Lanterns/Fixtures => Modern => Topic started by: A_lights on February 07, 2010, 12:31:28 AM
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This is interesting
http://www.zeromercury.org/EU_developments/090403_EEB-GPI_response_to_Oeko_final_report_Hg-lamps.pdf
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I wonder if this group is aware if there's lower mercury thats shorter life and faster mercury disposal (plus from some people who don't or refuses to recycle lamps) I wonder if they are aware that the Philips HPS (BEFORE ALTO) from 1997 lasted 10 years...while the 2001 seemed to only last 3 years?
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This is crap full of factual errors or even clear lies...
But what it show is the byrocracy mess in the Hg limit definition of today...
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No kidding this is crap ::) >:(
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In fluorescent lamps: The only way to get rid of the liquid mercury is by using an amalgam like in Megamen CFLs and our Hyundai Teva helical CFLs that also uses instant on amalgam technology (And as a bonus, the lamps will run at optimal efficiency at higher temperatures).
In HPS lamps: Getting rid of the mercury is very easy: A higher pressure xenon buffer (300 torr) inside a longer and narrower arctube, with an addition of an antenna to facilitate ignition on standard ignitors (And as a bonus, the lamp will last longer [30,000 hours], will have much higher efficiency and wouldn't cycling).
In MH lamps: Getting rid of the mercury isn't possible, as this will require a new type of ballasts for them as they wouldn't retrofits on the current MH, HPS and MV ballasts (Nor reactor and nor CWA pulse or probe start) because their electrical characteristics will depends on their halides chemistry and not on the mercury.
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These group of activists are complusive liars who will say anything to get light sources banned, espeically the groups who want LED everywhere and the average LED streetlight only gives off 2,600 lumens and that's not enough to light the streets at night.
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I hate those idiots too look at this message I sent to a LED street light company;
ME: What people are not told is that the orange High Pressure Sodium Lamps are more Efficient! Therefor I hate LED street lights!
Company: Not sure where you are getting your information from but LED are 50% or greater energy saving over HPS and last ten times longer.
ME: OK Ten times longer thats a lie, You saying your LEDs last 50, 000 hours, HPS lamps last up to 40,000 hours, also HPS lamps have an efficiency of up to 140 Lumens Per Watt LED might get 100 if your lucky, sure the fixture uses fewer watts however you get less light, I will be using HID sources forever.
Idiots! ::)
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It is not as straight forward to compare LED's with HPS. Lower lumens with LED's does not mean lower lighting levels. One of the reason is, then LED lumens are measured WITH the full cut-off optic (as it is part of the LED component itself), while HPS are measured stand-alone. And FCO optic around has far from 100% efficiency...
But this all depend on actual optical design: You might have very bad LED assembly, as well as very good HID assembly.
@dor123: Mercury-free HPS (at least those designed for EU series choke ballasts, so with arc voltage between 70..90V) are actually less efficient (and give worse color) then their "classic" counterparts.
However i have no overview on US-market lamps (they have different arc voltages, as they were not limited to given OCV when HPS were introduced)
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Medved: But they are constructed like the super HPS lamps, with a higher xenon pressure of 300 torr, longer and narrower arctube and antenna for reliable ignition.
According to http://www.lamptech.co.uk/Spec%20Sheets/Sylvania%20SHP-MF100.htm , they are slightly less efficient then super HPS lamps, but still more efficient then standard HPS lamps.
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@dor123: May be the "super HPS" i consider as "standard" (as when i was searching for some HPS, it was only in newest lamp catalogs and looking only for highest efficacy and/or life rating, so i do not remember those cheapest lamps)...