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...
-Mickey
----- Original Message -----
From: "tOM Trottier" <Tom@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, April 21, 2003 6:20 PM
Subject: Re: [OM] Humidity reduction in Oly cabinet
> But where does the light go and what happens to it?
> In a cabinet, it shines on the walls, heating them up.
> No energy is lost unless you open the door.
>
> If you put light bulbs in series, the resistance is increased, and the
> voltage and therefore the wattage is reduced. Four four-watt bulbs will
> produce one watt. In parallel, they add up - 16 watts.
>
> In series, using fewer volts, the bulbs will last much longer.
>
> You don't need a lot of heat, Even a few degrees over ambient reduces the
> humidity.
>
> Fluorescent bulbs, white walls, and wire shelves also will produce UV to
> help kill mold and bacteria, and little heat to cause fires, and provide
> some illumination!. A small corded fluorescent with the right wattage is
> cheap and effective, if a little fragile, placed at the bottom of the
> cabinet so that convection will circulate the dehumidified air.
>
> tOM
>
> On Monday, April 21, 2003 at 17:38
> Mickey Trageser <olympus@xxxxxxxxxxxxxxx> wrote:
>
> > Do light bulbs put out the same BTUs watt for watt as a heating element?
I
> > would expect the light bulbs to be less efficient heat producers, since
they
> > 'waste' so much energy on visible light. -Mickey ----- Original Message
> > ----- From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxx> To: "Olympus mail
list"
> > <olympus@xxxxxxxxxxxxxxx>; "Mickey Trageser" <vze3m2s8@xxxxxxxxxxx>
Sent:
> > Monday, April 21, 2003 8:56 AM Subject: Re: [OM] Humidity reduction in
Oly
> > cabinet
> >
> >
> > > Mickey posted this link for the Golden Rod Dehumidifier products.
> > > <http://www.goldenroddehumidifiers.com/pages/other-pages/specs.html>
> > >
> > > I think that by examining the specs on this page (wattage vs cabinet
> > > size protected) you can get an idea of what's needed if you want to do
> > > this using light bulbs as the heat source. Note that the largest
Golden
> > > Rod consumes only 25 watts. I've been thinking of doing this myself
using
> > > a series of 4 watt night light bulbs for even heat distribution.
>
> ---------
> 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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