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n:vision 23W (100W equivalent) compact fluorescent
New bill would mandate that light bulbs produce 120 lumens per watt by 2020

It looks as though energy efficiency is still a big priority for municipalities and countries across the globe. We've already detailed energy-efficient LED lighting efforts put forth by Raleigh, NC. We've also discussed how Australia and the European Union (EU) plan to get rid of incandescent light bulbs by 2009. The United States is also moving towards ushering out inefficient lighting with H.R. 1547, which was published on March 15, 2007.

The bill (PDF), which was submitted by California representative Jane Harman, indicates that light bulbs which have an overall luminous efficacy of 60 lumens per watt (lm/W) will be prohibited by January 1, 2012. The energy requirements get progressively steeper every four years. On January 1, 2016, the requirement will grow to 90 lm/W and will reach 120 lm/W by 2020.

A traditional 100W tungsten incandescent light has an overall luminous efficacy of 17.5 lm/W. A 23W compact fluorescent (100W equivalent) has an overall luminous efficacy of 60 lm/W.

Exemptions could be made by the Secretary of Energy for certain applications where it wouldn't be feasible to use energy-efficient lighting. These include applications related to military, medical or matters of public safety.

If an exception is made by the Secretary of Energy, that still doesn't give entitle the recipient to a free pass to continue using outdated technology. The exemption will only be in effect for two years after which the current enacted requirement will have to be adhered to.

The bill also notes that consumers and businesses will be given incentives to encourage the use of energy efficient light bulbs.



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Dimmable
By jtdwab on 3/22/2007 11:59:11 AM , Rating: 1
My problem with the compact florescent light bulbs is that you can't dim them. I have home theater lighting that I like to dim to watch movies. I'm waiting for the LED bulbs which can be dimmed down (I believe).




RE: Dimmable
By Tsuwamono on 3/22/2007 12:04:12 PM , Rating: 2
as far as i know LEDs can be dimmed. All my light bulbs are Florescent except my kitchen cabnet ambient bulbs as they need to dim.


RE: Dimmable
By SiN on 3/22/2007 12:22:30 PM , Rating: 1
My problem is with your one sided comment, they can be dimmed, problem is they cannot be dimmed down to levels as low as indecescent light bulbs. I have had to mention this before on DailyTech forum.
Backing this up - i have the energy efficent bulbs in my home, with dim switch.
Lighting is also my job.
So, thanking you for your misinformation, however, THEY CAN BE DIMMED. Just not as low as you would like. Obviously.
The input:output is such that when you reach a certain level while dimming, the input is below the minimum input to acheive lighting.


RE: Dimmable
By dice1111 on 3/22/2007 12:28:39 PM , Rating: 5
quote:
"THEY CAN BE DIMMED. Just not as low as you would like. Obviously.
The input:output is such that when you reach a certain level while dimming, the input is below the minimum input to acheive lighting."
Hence they are still not suitable replacements for a lot of applications. The OP's concern and reason to wait for LED lighting is still valid.


RE: Dimmable
By dgingeri on 3/22/2007 12:31:28 PM , Rating: 2
LED lighting is that efficient on it's own, but once the transformer and rectifier are figured in, they become less efficient than compact fluorescent bulbs, so that's not really a decent replacement.


RE: Dimmable
By saratoga on 3/22/2007 7:19:57 PM , Rating: 2
Do you really need a rectifier for an LED? Why not just drive it off AC?


RE: Dimmable
By highlandsun on 3/23/2007 12:02:57 AM , Rating: 2
LEDs burn out pretty rapidly when run with reverse voltage, unlike regular diodes. You have to feed them DC, with the correct polarity, otherwise they die.


RE: Dimmable
By mino on 3/22/2007 1:43:51 PM , Rating: 4
Yes, for instance why would ANYBODY use fluorescent devices in closet they open once a month?
Or a toilet they are lit-up just for a minute (in which it just lights up). My experience is that incadescent bulbs are less susceptible to frequent power pu-down cykles.

This is stupid, there are many application where classic bulbs make every sense. There are environmets where their heat generation is included into the energy budget of the room - especially common in old underground pubs where infra-heating by lightning bulbs is both effective, cheap and provides good atmosphere.

Seems to me just like another decision from the table at a modern 20-story office building with the decision maker having no idea what light bulbs are good for.

If they want to encourage energy-saving tech, then put additional taxes on classic bulbs so they are not used where not beeing the best option. Or better, make energy more expensive so that people have a reason to go efficient.


RE: Dimmable
By Keeir on 3/22/2007 4:22:30 PM , Rating: 1
"Or better, make energy more expensive so that people have a reason to go efficient"

We have a winner! The basic "goal" of this law seems to be to reduce consumption of energy. I would imagine the point of "lower pollution" would also be made. A law banning certain types of light bulbs is just an indirect solution to the underlying problem - a power consumer does not have to pay for all the costs of power production.

Banning certain types of light bulbs across the board is unfairly punative to those that have high sensitivites to certain types of lighting but use significantly less power than say Al Gore.

Lets try to tack on the estimated cost of cleaning up or removing the pollution onto the cost of consuming electricity and force everyone to re-evaluate the choices they make inregards to energy efficient for everything.


RE: Dimmable
By Christopher1 on 3/22/07, Rating: 0
RE: Dimmable
By robertgu on 3/22/2007 6:23:42 PM , Rating: 3
Why do you feel just because you do not have something that everybody should not have it or make do without it?

Sorry if I'm blunt, but it sounds a little childish and resentful to me.

I don't have dimmers and I have CFLs on every light source in my house. But that's MY choice. What right do you have in knocking someone else's choices? It's their lives, it's their money, and it’s their choices.

All this "you have to chose what we want" or "we'll regulate you into what we want you to do" is my main problem with extreme leftist and rightist. Leftist because they force us to social programs by taxes and regulations to fit their agendas. Rightists by their constant pushing of religious agendas. What ever happen to respecting individual freedoms and choices?

If you want to increase electrical efficiency; take a page out of the oil price hikes, when oil shot up, people that were using ultra-large vehicles for frivolous uses have started trading down in vehicles, with many picking up hybrids. The people that have uses for the large vehicles stuck to them. The hybrids grew into popularity not by regulations but by economics (higher oil prices) and individual choices. The same should happen with electrical efficiency.

Stop with the forcing tight-fitting regulations down people’s throats already!


RE: Dimmable
By dever on 3/23/2007 3:08:38 PM , Rating: 2
Mostly agree, but I know many who call themselves right-winged, and have no desire to force religion on anyone. Aren't libertarians considered far right-winged? (ie believe government's function is to stop the coercion of individuals by other individuals or governments, define property rights and do little else.)


RE: Dimmable
By ElFenix on 3/22/2007 12:34:20 PM , Rating: 2
iirc, interference between the triac and balance makes the bulb die much faster


RE: Dimmable
By rsmech on 3/22/07, Rating: 0
RE: Dimmable
By highlandsun on 3/23/2007 12:24:13 AM , Rating: 3
LEDs and CFLs are two completely different stories.

LEDs can be dimmed to any level you want. You can do this with a simple potentiometer to limit the input current, or you can use pulse-width-modulation. For the high powered LEDs (the type you'd want to use for room lighting) they recommend you use PWM because just decreasing the current also tends to alter the output color. (Of course, dimming an incandescent also alters the color. So no big deal, to me anyway.)

CFLs can only be dimmed with PWM, because below a certain threshold they simply won't light.

None of this is a big deal. You can get a dimmer switch that can dim any kind of light (Maxlite DimAll, e.g.)
http://www.lighthouseconsultingllc.com/maxlite_pag...
All it is is a PWM dimmer in the switch, so that it works with incandescents as well as LEDs and CFLs. It also dims down to 10% intensity, which is as good as any conventional incandescent dimmer.


RE: Dimmable
By caqde on 3/22/2007 12:25:33 PM , Rating: 2
There are dimmable cfl light bulbs just not very many. They seem to be a luxury to find right now but I believe they will be easier to find later on, but you can find them.

So you could try these for your theater although I would use them somewhere else first to see how well they actually dim.


RE: Dimmable
By walk2k on 3/22/2007 4:26:57 PM , Rating: 2
http://www.energystar.gov/index.cfm?c=cfls.pr_cfls

39 dimmable CFLs currently available (2 discontinued), ranging from 495 lumens to 1700 (max, doesn't list minimum though).

If they don't dim low enough you could also add filters/shades/etc..


RE: Dimmable
By jtdwab on 3/23/2007 7:03:30 PM , Rating: 2
I stand corrected. I had never seen one that was dimmable. I will have to buy one and give it "dim". I still like the idea of the LED bulbs as we are at the same level of development in LED technology that we were when we were first able to buy incandesent bulbs so many years ago.


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