Posted by Josepi on November 27, 2010, 8:45 pm
Electric blanket comes to mind there!
There is no need to heat the room I sleep in here in Seattle. I've got 3
comforters which keep me toasty all night with the house as low as 45F. The
bed
room is the last one I'd heat, except for certain special occasions. A
standard
space heater takes care of those just fine, and warms up the bed in 2
minutes if
needed when I climb in.
Jim Rojas wrote:
> I live in Florida. To save money, I use the oil filled plug in heaters
> that you can buy at Walmart. I set it on #3 setting, and use only the
> lower element. It keeps the room nice and cozy. My central air heat
> pump just uses too much power. There is no need to heat up rooms no
> one sleeps in.
Posted by Curbie on November 27, 2010, 11:07 pm
>Electric blanket comes to mind there!
That's what I do, 2 comforters with an electric blanket sandwiched in
between. I haven't heated the bedroom area at all so far, and turn the
heat way down in the living area at night; I'll see what adjustments
need to be made for the Nebraska winters.
Posted by Gordon on November 26, 2010, 9:40 pm
> Saw an ad for energy efficient heater, which prompted this question:
>
> Aren't all electrical heater equally efficient in converting
> electricity to heat?
Yes.
>
> If not, where do the lost energy go? Don't they all get converted to
> heat sooner or later?
The fan uses some electricity that isn't converted to heat.
But it is a very small amount.
>
> The only way I can think of to consume electricity and not generate
> heat is to radiate off the energy as electromagnetic wave (radio wave,
> x-ray, etc) which can radiate away into infinity and not generate
> heat.
>
But, when the radio wave is absorbed by an object, it heats it.
CF: A microwave oven.
Posted by Curbie on November 27, 2010, 1:09 am
On Fri, 26 Nov 2010 21:40:56 +0000 (UTC), Gordon
>The fan uses some electricity that isn't converted to heat.
>But it is a very small amount.
Why doesn't the electricity the fan uses convert to heat?
Curbie
Posted by Ralph Mowery on November 27, 2010, 1:24 am
> On Fri, 26 Nov 2010 21:40:56 +0000 (UTC), Gordon
>>The fan uses some electricity that isn't converted to heat.
>>But it is a very small amount.
> Why doesn't the electricity the fan uses convert to heat?
> Curbie
It does. Some of the power to run the motor is converted to heat and as the
air moves the friction of the moving air converted back to heat.
For all the electricity used inside a house, there are only a couple of
things I can think of that is not converted back to heat inside the house.
That is light that goes out the windows and some electromatic waves that
penetrate the walls. This is usually a very low portion of power compaired
to the total usage.
The only other things I know of is things that have the heat vented outside
such as a dryer.
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> that you can buy at Walmart. I set it on #3 setting, and use only the
> lower element. It keeps the room nice and cozy. My central air heat
> pump just uses too much power. There is no need to heat up rooms no
> one sleeps in.