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Old 08-17-2010, 11:21 AM   #1
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Input on Lighting


My thoughts
I don't understand why they are scraping Incandesent, I thought they took less energy to start than others types, just used more energy to stay on for long periods. I think it still has its place where you need temporary lighting. Example: storage areas like closets, sheds, etc. Where it is used for a few minutes each time.

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Old 08-17-2010, 11:33 AM   #2
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40w old school...9w CFL - approx same light
100w old school...23w CFL
CFL is merely a step towards more efficient lighting - LED plus others

Old bulbs are not being scrapped
But new energy requirements are going into effect
Some incandescents already meet the requirements
GE did scrap their new energy efficient incandescent program

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Old 08-17-2010, 11:44 AM   #3
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Wally welcome to the Forum
I have not seen any data comparing input surge current of CFL as compared to incandescent lamps. If you have any data please post it.
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Old 08-17-2010, 11:54 AM   #4
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I just saw GE Candelabra base CFL's at the local Hardware Store
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Old 08-17-2010, 02:45 PM   #5
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It's all political. When the building is being heated there is no waste with incandescents. The heat simply adds to the heat of the house. Your furnace will just have to make up the difference when you use CFLs. I you are cooling, it is the opposite effect.
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Old 08-17-2010, 04:41 PM   #6
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I just hope there is a sutiable substitute for the continuous-spectrum light that incandescents provide on the horizon since they seem hell bent to do away with them. Fluorescent lights are no substitute.
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Old 08-17-2010, 09:01 PM   #7
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I have read that CFLs do use more power at start-up, but that they still save energy conmpared to an incandesent, even if used for a very short period.
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Old 08-17-2010, 09:40 PM   #8
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I prefer the 'cleaner' light from the new blulbs, especially with the wide variety of styles available now. I don't prefer the amount of mercury they contain and the fact that you can't just toss them in the garbage when they're done. We're sticking with the regular bulbs as long as we can until a better alternative for us becomes available.
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Old 08-17-2010, 10:28 PM   #9
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Quote:
Originally Posted by SPS-1 View Post
I have read that CFLs do use more power at start-up, but that they still save energy conmpared to an incandesent, even if used for a very short period.
Mythbusters did a test on startup power
Its neglible & incandescent uses more at startup


Quote:
For startup energy consumption, Grant hooked up an inductive current loop to a computer and measured the amount of energy used when the turned on the bulbs. With an inductive current loop, you run a wire through the center, which induces a current in the loop. This current is then measured by a digital sampling oscilloscope.
Based on the amount of energy consumed turning on the bulb, they were able calculated how long the bulb would have to be turned off in order to make it worth the energy savings, i.e. "It's best to turn off the bulb if you are leaving the room for":
  • Incandescent: 0.36 seconds
  • CFL: 0.015 seconds
  • Halogen: .51 seconds
  • LED: 1.28 seconds
  • Fluorescent: 23.3 seconds
In other words, its almost always best to turn the bulb off. Even the 23 seconds for the fluorescent lights isn't very long, and the rest of the times are pretty much blinks of an eye.
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Old 08-18-2010, 01:43 AM   #10
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Dave, Thanks for posting the Mythbusters data.
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Old 08-18-2010, 04:57 PM   #11
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Very interesting Dave. But can anybody explain why the CFLs used so much less energy than the fluorescents ?
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Old 08-18-2010, 05:10 PM   #12
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I'm not sure
Both bulbs tested were 10w bulbs
They did not state if it was a T-12...T-8 etc
I saw the episode, can't remember what the bulbs looked like

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