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Posted by hallerb@aol.com on April 27, 2008, 8:01 pm
On Apr 27, 7:49=EF=BF=BDpm, d...@manx.misty.com (Don Klipstein) wrote:
> =EF=BF=BD There is now a retail-available incandescent that has enough ene=
rgy
> efficiency to get around the upcoming 2012-2014 ban until 2020.
>
> =EF=BF=BD Thanks to Paul M. Eldridge for mentioning this in article
> "candlelight thread" on April 19th!
>
> =EF=BF=BD These are truly incandescent lamps producing about 90-91% as muc=
h light
> for 70% as much electricity, in comparison to the highest light output
> grades of standard incandescents. =EF=BF=BDLight output is fully on par wi=
th soft
> white ones that have life expectancy extended to 1500 hours. =EF=BF=BDThes=
e
> improved incandescents have rated life expectancy of 3,000 hours.
>
> =EF=BF=BD They look like soft white incandescents, both while off and whil=
e on. =EF=BF=BD
> They actually are incandescent, specifically a variation of the halogen
> lamp known as "HIR". =EF=BF=BDThey gain energy efficiency by using an
> infrared-reflecting coating on the inner surface of the inner halogen
> capsule.
>
> =EF=BF=BD Despite being halogen, they are rated to be fully dimmable. =EF=
=BF=BDJust don't
> expect dimming to increase their life as much as dimming increases life of=
> non-halogen incandescents, since halogens have an extra aging mechanism
> that is slowed to a lesser extent by dimming (filament end notching).
>
> =EF=BF=BD Their color, spectrum and color rendering properties are
> incandescent-like. =EF=BF=BDThe color is more greenish than conventional
> incandescent to an extent so small that I usually cannot see this, even
> side-by-side against a conventional incandescent while looking for this. =
=EF=BF=BD
> The color difference is of a scale that I have seen between different
> conventional incandescents of same color temperature but different
> filament winding styles and maybe different tungsten grades. =EF=BF=BDThe =
HIR
> lamps definitely *do not* have anywhere near even halfway a "gas mantle"
> extent of being greenish.
>
> =EF=BF=BD I just got some at Home Depot a couple hours ago. =EF=BF=BDThey =
are Philips
> Halogena "energy saver".
>
> =EF=BF=BD The 70 watt one produces 1600 lumens (22.9 lumens/watt) and the =
40 watt
> one produces 800 lumens (20 lumens/watt).
>
> =EF=BF=BD Efficiency is improved over conventional incandescent, but is st=
ill only
> around 35-40% of that of better compact fluorescents.
>
> =EF=BF=BD Since these are halogen lamps, they should have at least some re=
gular
> use with being on long enough to fully warm up to keep the "halogen cycle"=
> chemical process in the inner capsule working properly (as opposed to
> being used only briefly). =EF=BF=BDBecause of this and their cost, I would=
rather
> not use these in closet lights, refrigerator lights and motion sensor
> lights - those applications are where conventional incandescent is plenty
> good.
>
> =EF=BF=BD Where I would recommend these: =EF=BF=BDOther locations where co=
mpact
> fluorescents are not acceptable due to warmup time, performance with
> dimmers, temperature often being far from ideal for CFL, or in fixtures
> where CFLs equal to 100 watt incandescent tend to overheat. =EF=BF=BDThese=
> should also be good where there is a critical color or color rendering
> requirement that no CFL can meet (whether in fact or by fiat or in
> someone's head), or for those who have big problems with disposable
> built-in electronic ballasts or with lightbulbs having even 3 milligrams
> of mercury.
>
> =EF=BF=BD Since these cost $5 per 2-pack and most ordinary spiral CFLs now=
cost no
> more and also last longer and have at least twice the energy efficiency of=
> these improved incandescents, I still say use CFL where you can.
>
> =EF=BF=BD- Don Klipstein (d...@misty.com)
one can buy cases of regular lamps, before the ban becomes
effective....
stored unused they should last forever
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