What is the best colour to paint radiators?
BananaRepublican
I see the radiator in my car is always black. flat black. Do they know
something most people don't?
and I believe the best placement of a heater is in the center of the
room. You don't see that either. What'sup?
>
<g.
you can't fool all of the people , all of the time.
George
> In a radiant heat system, what colour radiator releases the most heat.
> I see the radiator in my car is always black. flat black. Do they know
> something most people don't?
> and I believe the best placement of a heater is in the center of the
> room. You don't see that either. What'sup?
>
>
Color really doesn't make a difference at the infrared wavelength
involved in a home radiator. If it were a glowing radiator the answer
would be different.
Automotive radiators are black simply because that color looks good on
equipment and tends to still look good after being in service.
Heating systems are usually designed for comfort of humans. The best
comfort (most uniform temperature) is obtained if you place the
radiator(s) close to where the heat is lost such as under a window.
Tock
"BananaRepublican" <geor...@humboldt1.com> wrote in message
news:georgew.k-52B95...@corp.supernews.com...
As far as I know, flat black radiates heat more readily.
But when I was a kid living in a house with those steam radiators, I used to
melt crayola crayons on 'em, and they came out multi-colored.
-Tock
Rod Speed
BananaRepublican <geor...@humboldt1.com> wrote in message
news:georgew.k-52B95...@corp.supernews.com...
> In a radiant heat system, what colour radiator releases the most heat.
Flat black.
> I see the radiator in my car is always black. flat black.
Not always, but that certainly is common.
> Do they know something most people don't?
Most people with the rather pathetic north american 'education', possibly.
> and I believe the best placement of a heater is in the center of the room.
Not necessarily. If you're attempting to minimise the cost of the
heat it can be better to apply the heat directly to the occupants,
particularly if there is just one and that one doesnt move around much.
> You don't see that either. What'sup?
Thats mostly because it gets in the way in the center
of the room and its more practical on the walls etc.
nicks...@ece.villanova.edu
>BananaRepublican <geor...@humboldt1.com> wrote:
>> In a radiant heat system, what colour radiator releases the most heat.
>
>Flat black.
False. The color makes no difference.
Nick
Rod Speed
<nicks...@ece.villanova.edu> wrote in
message news:ctrguh$a...@acadia.ece.villanova.edu...
>> Flat black.
Correct. Have fun explaining why heatsinks without fans are normally black.
Its completely trivial to prove too with the classic high school
experiment of monitoring the temperature of boiling water in two
different containers, one flat black and the other bright and shiny.
bic...@charter.net
Rod, shit is neither flat black nor bright and shiny. Stick with what
you know.
AllEmailDeletedImmediately
"BananaRepublican" <geor...@humboldt1.com> wrote in message
news:georgew.k-52B95...@corp.supernews.com...
> I see the radiator in my car is always black. flat black. Do they know
> something most people don't?
> and I believe the best placement of a heater is in the center of the
> room. You don't see that either. What'sup?
i've read that you shouldn't paint them at all. any paint will hinder the
heat.
Don K
news:96gMd.848$h06.1...@monger.newsread.com...
Many years ago, I designed a module that went into an unmanned
space satellite. It was essentially a block of aluminum that was
generating heat. The only way to get the heat out of the module
was by radiation. So I looked up how I could make my aluminum
"radiator" more efficient. It turned out that NASA had some standard
paint that had a higher radiation emmittance than aluminum.
Ironically the paint was white. The paint had a very rough
texture. I guess that increased its effective surface area.
Don
Tock
"Don K" <dk@dont_bother_me.com> wrote in message
news:KKidnSHPvZl...@comcast.com...
Cool . . .
I recall something about "blackbody radiation" from my physics class, and
re-checked on emissivity . . . seems rough textured surfaces radiate more
energy than flat & smooth & shiny. Guess color doesn't make any difference
after all . . .
Always learning,
-Tock
Bill the second
"Rod Speed" <rod_...@yahoo.com> wrote in message
news:36d21nF...@individual.net...
Shouldn't the water stay at 212F or 100C if it's boiling?
Rod Speed
"Bill the second" <as...@asdf.com> wrote in message
news:_rtMd.224881$Np3.9...@ursa-nb00s0.nbnet.nb.ca...
Pathetic, really.
BananaRepublican
George <geo...@nospam.invalid> wrote:
> Heating systems are usually designed for comfort of humans. The best
> comfort (most uniform temperature) is obtained if you place the
> radiator(s) close to where the heat is lost such as under a window.
Russian fire places. i.e. massive closed door fireplaces. are in the
center of the space. they radiate for hours, maybe days.