LED street lighting the newest challenge to old utility business models
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Re: LED street lighting the newest challenge to old utility business models
#2NYC is starting to replace its sodium vapor street lamps with LED lamps, and expects that all 250,000 of them will be converted to LED lamps by 2017:
http://www1.nyc.gov/office-of-the-mayor/news/343-13/mayor-bl...
Re: LED street lighting the newest challenge to old utility business models
#3I never realized the scale of energy consumption by streetlights, though when I give it some thought, it's not all that surprising. I wonder if there would be the possibility of using these lights to only illuminate the road and say 1-2m to each side, avoiding light pollution for people living near streetlights. As it stands currently, the nearby streetlights keep my room lit at night.
Re: LED street lighting the newest challenge to old utility business models
#4> and the fact that bugs are not attracted to LED lights as they are to the ultraviolet light cast from conventional street lights
Why is this listed as a benefit? A bug that is at the streetlight is a bug that is not at my house. Is there some problem with bugs congregating at streetlight that I'm selfishly ignorant of?
Re: LED street lighting the newest challenge to old utility business models
#5> and the fact that bugs are not attracted to LED lights as they are to the ultraviolet light cast from conventional street lights Why is this listed as a benefit? A bug that is at the streetlight is a bug that is not at my house. Is there some problem with bugs congregating at streetlight that I'm selfishly ignorant of?
What's with the anti-nature attitude? Bugs perform tons of ecosystem services like pollination, food, decomposition, eating pests, fertilization, etc. A complete food web is dynamically stable, preventing infestations. This is why monoculture agriculture necessitates pesticides/herbicides/fungicides, btw.
Insects could live without us. We couldn't live without the insects. My interest is entirely selfish. ;)
Of course, this is getting into much bigger issues than just streetlights...
Further reading: http://lighting.com/light-pollution-wildlife/
Re: LED street lighting the newest challenge to old utility business models
#6> and the fact that bugs are not attracted to LED lights as they are to the ultraviolet light cast from conventional street lights Why is this listed as a benefit? A bug that is at the streetlight is a bug that is not at my house. Is there some problem with bugs congregating at streetlight that I'm selfishly ignorant of?
Get LED lights in your house then?
http://news.discovery.com/animals/zoo-animals/bugs-streetlig...
> People with homes closer to street lights may be at greater risk for exposure to certain insects, and even the diseases some of them could harbor. For example, another recent study showed that Triatoma dimidiate, an insect that can carry Chagas disease (an inflammatory, infectious illness), infested houses that were in closer proximity to street lighting, Davies said.
Re: LED street lighting the newest challenge to old utility business models
#7> and the fact that bugs are not attracted to LED lights as they are to the ultraviolet light cast from conventional street lights Why is this listed as a benefit? A bug that is at the streetlight is a bug that is not at my house. Is there some problem with bugs congregating at streetlight that I'm selfishly ignorant of?
You have to constantly clean the lights that are full of baked on bugs, for one.
Re: LED street lighting the newest challenge to old utility business models
#8An interesting con to this LED lighting movement is that I have heard from a few CDOT engineers that the new LED lights do not put out enough heat to melt through snow that accumulates during storms and this has caused issues for traffic lighting. This is all second hand, of course.
Re: LED street lighting the newest challenge to old utility business models
#9An interesting con to this LED lighting movement is that I have heard from a few CDOT engineers that the new LED lights do not put out enough heat to melt through snow that accumulates during storms and this has caused issues for traffic lighting. This is all second hand, of course.
Heat coils are very simple, as are thermostats. They could be added very easily to run when it's cold enough out that it would be helpful.
Re: LED street lighting the newest challenge to old utility business models
#10An interesting con to this LED lighting movement is that I have heard from a few CDOT engineers that the new LED lights do not put out enough heat to melt through snow that accumulates during storms and this has caused issues for traffic lighting. This is all second hand, of course.
Check out http://ledsmagazine.com/features/2/5/8
It says that:
The energy consumed by a 100-watt GLS incandescent bulb produces around 12% heat, 83% IR and only 5% visible light. In contrast, a typical LED might produce 15% visible light and 85% heat.
You can't always put a LED light in a enclosed fixture, as it might even overheat. It needs some air flow to cool it's heat sinks.