Quartz Space Heater
What kind of radiation?
"CJT" wrote in message
...
Solar Flare wrote:
Hey ! Free illumination!
Do you believe in perpetual motion too?
You do know the difference between radiation, convection, and
conduction, don't you?
"R.L. Deboni" wrote in message
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kjpro @ usenet.com wrote:
No kidding... this is what people don't understand.
Which produces more heat?
A 1 - 500 watt halogen light.
B 5 - 100 watt light bulbs.
C 1 - 500 watt electric heater
D 1 - 500 watt quartz heater
E 1 - 500 watt baseboard heater
Which answer below is correct?
1 They all create different amounts of heat.
2 A & B are equal, C & E are equal, but D produces more heat.
3 A, B & D are equal and C & E are equal, but C & E produce
more heat.
4 (A,B,C,D & E) All create the same amount of heat.
Correct, but incomplete, answer (have renumbered answers) is 4
But complete answer is:
A,B and D produce more radiation heat
C less radiation
E most heats buy convection
Therefore, if you are sitting exposed to sources A, B and D, you
feel warmer with the same power (sounds strange ?) as of C or E.
If you are interested ONLY in heating a room, answer 1) is ok.
But if you are interested in heating people (for example, outdoor),
sources A, B and D are very efficient options.
Let us put it this way: A,B and D are most efficient in delivering
the same amount of power of C and E, but where you need it mo on
your body.
Example: a keep 64 F at home. When I am walking around it is a
comfortable temperature. But when I sit down, I start to feel a
little cold.
Solution: a 150W halogen lamp with reflector pointed in my
direction. 150W is not that much power, but you have to compare it
to your body heating power (about 100-200W), so if you could
deliver that power to heat yourself and not the walls of your house
... :-)
R.L.Deboni
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