The incandescent bulb emits more infrared, which is perceived as heat, but
in a cabinet, a watt is a watt is a watt. They have nowhere else to go, and
all becomes warmth, even if convected and not radiated.
So a 15 watt fluorescent will produce as much heat as a 15-watt
incandescent as a 15-watt goldenrod.
tOM
On Monday, April 21, 2003 at 19:55
Mickey Trageser <olympus@xxxxxxxxxxxxxxx> wrote:
> Tom,
> I'm not so sure it's the visible light that is heating the walls.
> Incandescent lights emit a good portion of their energy in heat already. But
> some of it is visible light. If you put your hand near a 25 watt bulb you
> will feel the thermal energy emitted. But I don't think you feel much warmth
> from the conversion of light to thermal energy. Put your hand in front of a
> 40 watt flourescent bulb. Much brighter, but little, if any heat. Sure,
> you'll get some from the ballast, and perhaps some near the ends of the
> bulb, but not truly from the light. Of course this could just prove that the
> flourescent is far more efficient at producing light. Maybe the incandescent
> bulb is such an inefficient light producer that the light loss is
> insignificant in a heating application. Do we have an EE in the house?
>
> Oh yeah, OM content: I need to keep my Olyquipment dry and fungus free...
---------
2003 Jun 28-30 in
Ottawa:http://www.CanadianCameraConference.ca
tOM Trottier, ICQ:57647974 http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
+1 613 860-6633 fax:231-6115 N45.412 W75.714
"The moment one gives close attention to anything,
even a blade of grass, it becomes a mysterious,
awesome, indescribably magnificent world in itself --
Henry Miller, 1891-1980
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