08-29-2009, 05:09 PM | #31 |
zeldinha zippy zeldissima
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ha, okay, i see what you mean. that happens to me sometimes but i think it's mostly when they are starting to get old. also sometime they start to buzz when they are first turned on, then it stops. when they start doing that, i buy a new one, to be ready.
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08-29-2009, 06:39 PM | #32 |
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The florescents are being pushed over here, too, though not at the point of flatly banning the incandescents. My local electric utility is one of the groups behind them. They're pushing conservation and energy efficiency because they really don't want to build new generating capacity. Doing so is a political nightmare, as everyone knows it's necessary, but no one wants a plant in their area, nor does anyone want to pay the enormous costs. (And for various good reasons, a new plant probably ought to be nuclear, which would add even more fun to the fractious process of getting it built.)
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08-29-2009, 07:32 PM | #33 | |
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Which is worse, the "very small amount of mercury" or the "very small" carbon footprint of incandescent bulbs? I don't have a reference for any studies done on the subject, if indeed there are any. Such anti green agenda studies are hugely non PC, and go largely unfunded thus undone. I use CFLs because they are an economic no brainer, but I do not delude myself that I might be doing the environment a favor. |
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08-29-2009, 07:35 PM | #34 |
Still wondering why
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Second thougth - there is a real drawback with energy saving bulbs vs. incandescent ones: they cannot be dimmed to get lighting effects!.
Gotta abandon several dimmers I have or find a workaround. I think that halogen lamps can be dimmed but there's no obvious way to mount them... |
08-29-2009, 07:39 PM | #35 | |
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08-29-2009, 07:40 PM | #36 |
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It's a good idea, the problem currently facing us is that a lot of people are going to compact fluorescent bulbs, which have mercury (a highly dangerous pollutant). Now where are the billions of compact fluorescents going to go when they die? It's an environmental hazard and quite ridiculous. If that mercury gets into groundwater people will get very sick.
LEDs are a better alternative from what I understand. They chew bugger all energy and modern LEDs are nice and white. |
08-29-2009, 07:57 PM | #37 |
Still wondering why
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08-29-2009, 08:02 PM | #38 |
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I think it's a bad idea - LEDs would be a much better replacement. A lot less energy, and sod all heat from them. And a nice, bright white light.
Until bayonet-fit LED bulbs become easily available, and until LED replacements for flouro tubes don't cost an arm and a leg and don't require you to rewire the fitting, we'll be sticking with CFL bulbs. There was talk of migraine sufferers still being able to get incandescent bulbs, as apparently CFLs can trigger or make worse migraines. Thankfully they are not one of my triggers (normal flouro bulbs on their last legs do make me ill though). Actually, what I'd really like is something that puts out the light of a halogen, and the heat of an LED - I love the light from halogen bulbs, but I'm really not so keen on the heat! |
08-29-2009, 08:47 PM | #39 | |
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08-29-2009, 09:43 PM | #40 | |
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08-29-2009, 09:47 PM | #41 |
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08-29-2009, 10:14 PM | #42 |
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There are several types of dimmers, the oldest ones use a resistor that gets hot instead of the light getting the current, but that type doesn't save any energy, so they aren't used anymore. There are also dimmers that cut out part of the waveform of the current, these do save a lot of power, are easy to manufacture, but don't work well for CFLs (flicker and shortened life), a dimmer that works with CFLs requires more advanced electronics, and thus is a lot more expensive, and they will be specifically marketed for being CFL compatible. These are still cheaper in the long run than buying CFLs that can be dimmed with distorted waveforms.
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08-29-2009, 10:38 PM | #43 | |
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08-29-2009, 10:39 PM | #44 |
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I've been using CFLs for years now and haven't had any issues, they have 'instant on' ones that turn on quickly enough so I don't notice a difference between that and incandescent. I'm thinking that the next bulbs I buy will be LED because they use so little energy and aren't really all that expensive (plus they have them at the local walmart), but that won't happen for months, these CFLs last forever!
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08-29-2009, 11:09 PM | #45 |
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On the subject of CFLs, Mercury, color of light, etc., here are a few tid-bits you may find interesting.
When I last looked at LED vs. CFL lighting (about this time last year), the available units produced similar lumens/Watt. Thus, if you want 1600 lumens you need a 23-Watt unit. And that's going to produce about 22.9 Watts worth of heat -- no difference whether it's LED or CFL. Thus the heat-sinks someone mentioned up-thread. Of course, LEDs really are "instant-on" at full light output -- a nice advantage. The big deal, however, is that LEDs are quite early in their technology curve -- there's a long way to go before we reach theoretical peak efficiency. By comparison, CFLs are a mature technology where the engineers have already squeezed out most of the available efficiency gains. So somewhere down the road (hopefully not too far) we should start to see LEDs that are much more efficient than the CFLs we'll be replacing. And that'll be great! Xenophon |
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