Loony Question for Today...
Which produces more HEAT, a 40W Incandescent, or a 40W Halogen bulb? ...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at
Yeah... where, exactly?
Examples:
- Neither changes the thermodynamic state of the Universe (sum potential and kinetic energy).
- If you instead meant local to the house it's in, neither, 40W is 40W.
- If you meant from power station to end user, the halogen will incur slightly higher losses due to the low power factor in transmission (the difference will be on the order of 5%).
- If you meant the energy which is not serving a useful purpose (i.e., visible light used for illumination before it, too, is absorbed and downgraded to a lower heat grate), then the incandescent will win by 15-20%.
But a Good Engineer would know this already.
Tim
-- Deep Friar: a very philosophical monk. Website:
"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
Probably the Halogen. It radiates in the horizontal axis if it is packaged in an edison base. Thus heating an enclosed fixture more than a classic incandescent.
Plus, who would use a halogen?, they are fire hazards.
Cheers
Technically the incandescent. The both consume 40 watts but the halogen is more efficient at converting power to light (and hence not to heat). I said 'technically' because you are unlikely to notice the difference in heat.
Only today?
Overly simplistic reply for today....
Hint: Infrared oven lamps are halogen.
"Halogen lamps get hotter than regular incandescent lamps because the heat is concentrated on a smaller envelope surface, and because the surface is closer to the filament. This high temperature is essential to their operation. Because the halogen lamp operates at very high temperatures, it can pose fire and burn hazards."
DimBulb thinks a 40W heater will produce more heat.
You can come up with any answer you want if you're allowed to change the question.
Utter nonsense.
You would be helpless without this group, wouldn't you?
The one with the higher temperature, of course. Do you know how to measure temperature?
Do you know about efficiency and how to look up these things? Do you know how to research?
General Grant!
-- Les Cargill
Jim-out-of-touch-with-reality-Thompson went to MIT, but seems only to have absorbed a rather narrow education. He may be able to research stuff relevant to designing integrated circuits, but any skills that might have covered a broader spectrum - say physics - seem to have atrophied and dropped off a very long time ago.
=A0 =A0 ...Jim Thompson
=A0 =A0| =A0 =A0mens =A0 =A0 |
=A0 | =A0 =A0 et =A0 =A0 =A0|
=A0|
=A0 =A0 =A0 |
Define HEAT. ?
George H.
A 40W liberal. Tell them they have to find a job, and they overheat.
But she's a 40W liberal.
An Incandescent will produce about 5 % of visible light, a halogen about 7 %, the rest is heat as IR radiation and conducted heat. With
40 W electric input, the Incandescent will produce about 38 W heat, while the halogen about 37 W of heat.
My thoughts, too. I have a fixture rated for three 40W miniature base incandescents, presently loaded with three 40W Halogens. My temptation is to go up to three 60W Halogens. ...Jim Thompson
Um, temperature is not heat.
That's a weenie answer. I suppose you'd say I should use CFL's ?:-) ...Jim Thompson
Enclosed fixture? I use Halogen floods in the kitchen. But I have LED's in the front entry lighting (25W equivalent). ...Jim Thompson
Not to worry, it's only John asS ;-) ...Jim Thompson
-- Jeff Liebermann snipped-for-privacy@cruzio.com
150 Felker St #D
If they ever taught you any physics, electromagnetics, or thermo at MIT, you clearly forgot it all.
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