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Re: [APD] Re: Spiral fluorescents - Walter
And thus, typically, overdriving a fluorescent, which runs
the bulb hotter, other things being equal, gets you more
light from a bulb but the energy efficiency drops and the
And, underdriving, insofar as it tends to run bulbs cooler,
other things being equal, gets you less light and usually
less energy efficiency but bulb life increases.
Fluorescents are, imo, deliciously complicated little
Anyway, with those fluorescents meant as incandescent
replacements (Compact Fluorescents or CFs), the higher heat
can shorten the life of the ballast, which is built into
the bulb base, as well as the bulb.
If you do a caclulation for the long term, buying Power
Compacts (PCs) can be cheaper, but the CFs make an
attractive alternative to incadescents at a low starter
price. In few ways as useful for planted aquaria, imo, as
PCs, but definitiely a step up from those contraptions of
--- Bill Wichers <billw at waveform_net> wrote:
> >At 07:44 PM 10/1/2003, Bill W wrote:
> >> you don't want to cool the lights off so much that
> >>their efficiency drops off.
> >My understanding is that most fluorescents LOSE
> efficiency if the temp
> >gets over 100F or so. Am I wrong???
> It goes both ways -- too cold OR too hot. There is a
> "sweet spot" where the
> efficiency of the lamp is at it's peak. Ivo Busko I think
> has some posts in
> the archives about exactly what those temperatures are
> for several types of
> Waveform Technology
> UNIX Systems Administrator
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
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