Maybe true. But the misery of the poor light quality and even poorer performance at switch on isn't compensated by that. Obviously LED would get round the latter.
I don't think I'm being unreasonable wanting a 100 watt GLS tungsten equivalent, am I? That simply plugs into a pendant fitting and gives near enough the claimed life too?
Were they in pendant fittings? High output - like say about a 100w GLS equivalent? I've now had three high output and expensive CFLs of different types fail very early - due, I'm fairly certain to overheating. Only ones I do have which last their claimed life are outdoors.
Today definitely LED. The one I linked to probably isn't far off what you want. I have never been a great fan of CFLs - too slow to start up.
I actually want an LED equivalent of 150W or 200W incandescent too. (which may be being a bit unreasonable)
Avoid CFL then the rising heat cooks their electronics. LED is a bit better. Lifetime is even worse if you put either in one of those glass globe things so as to trap all the hot air inside it.
Oh - one of *those*...
Was hoping that was limited to the crappy chinese nonames...
OTOH, I have a 23W CFL, inside a glass globe, at the head of my staircase that's been going for several years and it's on for a couple of hours a day.
Some of my CFLs in pendant fittings have survived daily use since I bought them from CPC in January 2003. Not high power, though.
When I used incandescents, bulb-blowing (and usually breaker-tripping) failures were more or less a weekly occurrence. CFLs solved the problem immediately.
On Wednesday, October 22, 2014 11:01:48 AM UTC+1, Dave Plowman (News) wrote :
I wonder why. I get perfectly satisfactory service from Osram 20w CFLs cap up in open fittings. In fact evrything except philips have been fine (and o ne poundland lamp someone who will be nameless bought).
NT
...one place CFLs are not suited to. Cold weather makes initial output & wa rm up time terrible, including for megaman subzero rated ones. In PIRs as w ell as little output the frequent switching kills them quicker than filamen ts. LED seems to be a good option outdoors.
NT
Probably in short bursts which avoids the buildup of heat.
The PSU capacitors dry out if the thing is left on for long periods.
FWIW there's a semi-enclosed glass fitting here with an 11W CFL, running
24/7. Since 2003 I've replaced the lamp exactly once.
Coincidental with reading this thread, the XYL and I nipped out to our local Asda to do some general shopping this afternoon and, is my wont, I browsed the GLS section just in case there happened to be any 'LED Bargains' on the shelves.
As luck would have it, I spotted a 12W, 810 lumens, LES warm white (3000K) on the 2 quid clearance shelf. The last time I bought a LED lamp from this very same store just over a year ago, I 'took a punt' on a 5W 270 Lumen BC warm white LED lamp for a fiver. Naturally, I grabbed it (we do have a couple of LES fittings, currently occupied by Philips 20W round envelope CFLs).
When I checked at the till, the price turned out to be £3.50. Since I rather suspected the 2 quid price on this one item was going to be too good to be true, I bought it anyway (it was still £1.50 cheaper than the identical looking full price 10W 810 lumen output versions they had on the shelving above the clearance shelf (and £11.50 cheaper again than the similar looking 18W 1400 Lumen LED lamps). I figured it would probably take a good 3 years to recoup the ROI of the 2W reduction in consumption offered by the more expensive lamp.
The Philips CFL lights up pink from cold but changes colour to white in a matter of seconds then warms up to full brightness after the usual half minute or so run up time. I grabbed my camera and set it to aperture priority to give my impression of the Asda 12W special being brighter than the Philips 20W CFL. Surprisingly, the camera selected the same 1/60th of a second exposure of the dining table below. However, previewing the pictures does hint at a slightly brighter scene so I'm quite pleased with my purchase. It does the same job using less electricity (8Watts less) and is instant on.
I've put the Philips CFL in the "Spare Lamps" box for now (it's the one of a pair originally bought specifically to match the kitchen/dining area adjustable pendant lamp that _hasn't_ developed the habit of shutting off for half minute periods every half hour or so - _That_ one is currently screwed into the living room uplighter floor lamp where it hardly sees any use and where the cap down burning condition aught to ease its random shut off foible).
At the price and efficiency levels of the stock being currently cleared out of the distribution channel to make way for modern lamps with double the 6 fold efficiency of that 12W LED, I'm in no hurry to replace my current crop of CFLs (4 to 5 fold efficiency over standard tungsten filament lamps).
The doubling of efficiency of the latest lamps should help ease their use in poorly ventillated cap up fittings so playing a waiting game offers more than just the benefit of an inevitable price reduction.
I have a CFL in a glass bowl which is on all evening. No complaints as far as lifetime is concerned. Problem is said bowl is too small to get a big enough CFL bulb inside.
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