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IWETHEY Home / IWETHEY Board / News Picks Forum / CF are still more efficient.
Post #266,322
by Another Scott
8/29/06 6:22:43 PM
Reply
New 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
Reply
New 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

Those bastards!
47 ms