CF are still more efficient.

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Post #266,322

by Another Scott

8/29/06 6:22:43 PM

CF are still more efficient.

I generally don't like the light given off by CF bulbs I've seen, and LED lamps are still very pricey, so I generally prefer bulbs like [link|http://www.bulbs.com/products/product_detail.asp?page=products&inventory=11243|Halogena] bulbs. 900 lumens/60 W = 15 lumens/watt, 3000 hours, $2.99 (0.33 cents/lumen). This [link|http://www.bulbs.com/products/product_detail.asp?page=products&inventory=11764|equavalent spiral CF] is 900 lumens/13 W = 69 lumens/watt, 10000 hours, 2700 K color temperature. $7.49 (0.83 cents/lumen)

The most powerful LED bulb-replacment I see [link|http://www.superbrightleds.com/edison.html|here] puts out 60 lumens/3 watt = 20 lumens/watt. It costs $30 ($1.50 per lumen).

There are [link|http://www.cree.com/press/press_detail.asp?i=1150834953712|131 lumnes per watt] LED parts in the lab, but they're not commercially available yet, I don't think. But they're starting to catch up...

Cheers,
Scott.
(Who will look into CFs again the next time he gets bulbs.)

Post #266,359

by static

8/30/06 3:08:56 AM

CF colour.

I had more than a few CF globes in the apartment I rented. They were good in the 'oyster' fittings because they didn't get as hot. However, when we bought, most of the lights had dimmers on them. :-( So no CFs. And a lot of fittings were Edison Screw instead of the Australian Bayonet Cap. :-/ I've got half-a-dozen CF globes downstairs with no homes as a result.

There is also the problem of colour. Most of them are 3500K or higher. That's quite a cold colour and not at all like incandescant light. For a warmer colour you want a lower colour temperature. Like 2500K or 2700K. Except those phosphors are more expensive, and therefore so are the light bulbs. So I'm very picky about my CF light bulbs!

Wade.

"Insert crowbar. Apply force."

Walmart to do something good?!? - (SpiceWare) - (17) - Aug. 29, 2006, 05:18:25 PM EDT

Also use them here and there, but . . . - (Andrew Grygus) - (1) - Aug. 29, 2006, 05:24:50 PM EDT

Tried some - wasn't impressed - (SpiceWare) - Aug. 29, 2006, 05:36:18 PM EDT

Every bulb in my apt. is flourescent... -NT - (imric) - Aug. 29, 2006, 05:33:03 PM EDT

I use them... - (Yendor) - Aug. 29, 2006, 05:36:56 PM EDT

Every time a bulb burns out I replace with fluorescent - (admin) - (1) - Aug. 29, 2006, 05:40:33 PM EDT

Me too. - (pwhysall) - Aug. 30, 2006, 02:51:50 AM EDT

Stupid question - (Simon_Jester) - (5) - Aug. 29, 2006, 05:53:10 PM EDT

I think you would need a wall wart for each - (hnick) - (2) - Aug. 29, 2006, 06:04:57 PM EDT

Nope... the way things are going... - (folkert) - (1) - Aug. 29, 2006, 07:33:15 PM EDT

Way cool, sounds nifty. Thanks for the info. - (hnick) - Aug. 30, 2006, 08:16:32 AM EDT

CF are still more efficient. - (Another Scott) - (1) - Aug. 29, 2006, 06:22:43 PM EDT

CF colour. - (static) - Aug. 30, 2006, 03:08:56 AM EDT

We have several, too. - (Steve Lowe) - Aug. 29, 2006, 05:56:39 PM EDT

Something doesn't add up - (drewk) - (1) - Aug. 29, 2006, 07:29:34 PM EDT

I think it's something like this. - (Another Scott) - Aug. 29, 2006, 08:36:55 PM EDT

Are they seriously known as 'ice cream cone bulbs'?! - (Meerkat) - (1) - Aug. 30, 2006, 02:18:26 AM EDT

I haven't heard that name used, but . . . - (Andrew Grygus) - Aug. 30, 2006, 10:04:00 AM EDT

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