I use a slot fan with my 9700 Pro and it works fine, got rid of theRobert said:Hi,
I have Radeon 9800 pro with stock cooling... Without changing the cooling on
the card, is there any alternative ways to cool the card, like pci slot fan
or something?
I have Radeon 9800 pro with stock cooling... Without changing
the cooling on the card, is there any alternative ways to cool
the card, like pci slot fan or something?
While on paper to you it might sound good but htenumber one killer will changeI have the best system cooling ever invented. It works
perfectly, and it is free .. sort of. There's an air conditioning vent right
in front of my computer. It blows
directly on the box, and when I place my hand on the
case, it is cold. I've been thinking of how to use this
in the winter as well. I could install a duct, and bring
in outside air with a small fan, and put some kind of
air guide over to the box. ?? Seems like a good idea
to adapt home air conditioning, or a winter air vent to
cool a computer. That air is very very cold, and much
more effective than just a fan in the case.
johns
GMAN said:While on paper to you it might sound good but htenumber one killer will
change from being the heat to being the moisture from condensation you
will bring in from that air conditioning duct. everything will corrode.
What "moisture from condensation"? You get condensation from warm, moist air
hitting cold surfaces. If you're using an air conditioner duct to cool the
computer you have cool, fairly dry air hitting warm surfaces and no
condensation. Further, most air conditioners remove moisture from the
air--the air coming out of that duct will typically be drier than the room
air.
patrickp said:Depends if the air conditioner _does_ remove moisture. If it doesn't,
the air is likely to be saturated.
If the air conditioner is actually cooling the air it is removing
moisture--that occurs due to the physics of cooling--cold air can hold less
moisture than warm air. The air conditioner doesn't have to do anything
"special" to remove moisture. Getting rid of the moisture that condenses
on the evaporator is one of the issues that air conditioner designers and
installers have to deal with--central air conditioning systems typically
have drain pipes or hoses, while window units are typically mounted at a
slight angle so that they drip outside instead of inside.
Perhaps you are confusing an "air conditioner" with an "evaporative cooler",
aka "swamp cooler". They tend not to be used with ducting and generally do
not produce "very, very cold air" so it is reasonable to assume that he is
not using a swamp cooler.
patrickp said:No, John, the fact that cool air can hold less moisture than warm air
means that cooling it is more likely to raise it to saturation point -
that's why air conditioner manufacturers and installers _have_
condensation problems.
The primary condition that determines whether moisture condenses from
air is not how much moisture it contains, but how saturated it is.
If an air conditioning system actively removes moisture from the air
by other means than condensation, then the resultant cool air may have
very low moisture content and not be saturated.
In systems which
don't remove moisture by any other process than passive condensation,
if the the condensation process produces any moisture at all, that in
itself is an indication that the resultant cool air is now fully
saturated.
Normally, this would not matter, since the outflowing cooled air will
be mixed with warmer air in the local environment. However, something
placed close to the cool air outlet, before mixing can take place,
_is_ likely to attract condensation.
patrickp
(e-mail address removed) - take five to email me
patrickp said:No, John, the fact that cool air can hold less moisture than warm air
means that cooling it is more likely to raise it to saturation point -
that's why air conditioner manufacturers and installers _have_
condensation problems.
The primary condition that determines whether moisture condenses from
air is not how much moisture it contains, but how saturated it is.
If an air conditioning system actively removes moisture from the air
by other means than condensation, then the resultant cool air may have
very low moisture content and not be saturated. In systems which
don't remove moisture by any other process than passive condensation,
if the the condensation process produces any moisture at all, that in
itself is an indication that the resultant cool air is now fully
saturated.
Normally, this would not matter, since the outflowing cooled air will
be mixed with warmer air in the local environment. However, something
placed close to the cool air outlet, before mixing can take place,
_is_ likely to attract condensation.
I have the best system cooling ever invented. It works
perfectly, and it is free .. sort of. There's an air conditioning vent right
in front of my computer. It blows
directly on the box, and when I place my hand on the
case, it is cold. I've been thinking of how to use this
in the winter as well. I could install a duct, and bring
in outside air with a small fan, and put some kind of
air guide over to the box. ?? Seems like a good idea
to adapt home air conditioning, or a winter air vent to
cool a computer. That air is very very cold, and much
more effective than just a fan in the case.
They don't have "condensation problems", they are aware that condensation
will occur and they allow for it in the design.
And this is relevant to the issue at hand how?
Suppose it is saturated at that temperature, so what?
Again so what?
You have a very serious misconception about condensation. When air coming
out of an air conditioner duct, saturated or otherwise, strikes the
surfaces of a computer, that air is _warmed_ and therefore becomes _less_
saturated and thus condensation does not occur.
Have you ever actually _observed_ condensation to occur on a _running_
computer placed adjacent to an air conditioning register? If so would you
be kind enough to describe in detail the circumstances?
Sic transit gloria Brittannia.
One more comment. Right now at my location the outside air temperature is
85F and the relatively humidity 81%. The inside air temperature is 72F and
41%. Tell me again about how air conditioners increase the humidity.
patrickp said:If you had read my original comment correctly, I said "Depends if the
air conditioner _does_ remove moisture. If it doesn't, the air is
likely to be saturated."
Not all air conditioners are designed to remove more moisture from the
cooled air than will be removed by condensation
If the air is saturated, there is a likelihood of condensation.
If the air is saturated, there is a likelihood of condensation.
If the air is saturated, there is a likelihood of condensation.
Until it cools the adjacent surfaces (which it will) and condensation
_will_ occur.
Of course not. I don't have air conditioning, either at home or at
work, nor do most of the environments I find myself in. And how does
this affect the discussion?
Oh, dear. Do we have a little bigotry here?
patrickp said:"Depends if the air conditioner _does_ remove moisture. If it
doesn't, the air is likely to be saturated."
Once more, if you'd bothered to read the statement you are so busily
criticising: if your air conditioner removes moisture over and above
what is passively removed by condensation then, yes, I would expect
your indoor humidity to be lower than the outdoor humidity.
Even if it does not remove humidity, mixing the cold air coming in
(which will have high humidity, but may have fairly low moisture
content) with the warmer air inside may also result in reduced
humidity.
This would not be so for the environs of an object placed
close the the cool air outlet, once its temperature starts to approach
that of the incoming air.
And, further to your question in your previous post, "Have you ever
actually _observed_ condensation to occur on a _running_
computer placed adjacent to an air conditioning register? If so would
you be kind enough to describe in detail the circumstances?" please
see David Casey's response in this thread.
David said:I think in the wintertime if you bring cold air from the outside into your
warm computer you will have problems with condensation. I saw a thread
about this a year or so ago at www.amdmb.com where someone had tried this
and was having the problems with condensation inside the computer.
As far as I know _no_ air conditioners are designed to "remove more moisture
from the cooled air than will be removed by condensation". The device that
does that is called a "dehumidifier" and generally in structures that are
air conditioned dehumidifiers are not needed because the moisture removal
by condensation is quite sufficient.
There is likelihood of condensation on warm surfaces?!?!?!?!?
On warm surfaces?
Parroting is a symptom of autism. Perhaps you should get yourself checked
for this condition.
So the air will "cool the adjacent surfaces" that are dissipating up to 400
watts of electrical current to a temperature less than that of the air?
Have you ever actually lived or worked in an air conditioned building? If
what you say is true then there would be water constantly dripping from
every surface in the building.
I just wanted to know if you were speaking from any kind of experience or
whether you were just expressing an uninformed opinion. Now we know.
Earth to Patrick--I live in the United States, where air conditioning is the
norm in businesses and residences. I've lived with it since some time in
the 1960s. I have never observed condensation forming on _anything_ that
is not _part_ of the air conditioner.
Looks like you read Latin as well as you analyze heat transfer.
patrickp said:John, as far as I know, large air conditioned buildings _do_ have
problems with condensation,
and it's not infrequent for air
conditioners to include some form of dehumidification (I'm sure I've
seen manufacturers advertising it).
And my experience with air-conditioning, and yours, has little to do
with this. We're not talking about the general use of air
conditioning, which I will readily agree should not normally cause
problems where the environment can absorb the effects of the incoming
saturated air. We're talking about the much less usual case of
placing a piece of equipment directly in front of a cold air outlet.
If the outlet of an air conditioner emitting air saturated with
moisture exhausts cold air onto a surface, it will cool that surface
down and condensation will start to form.
The air conditioner will not exhaust directly on to surfaces
"dissipating up to 400 watts of electrical current," it will exhaust
on to the front intake(s) of the machine, which are not so warmed.
As, probably, the coolest parts of the machine, they will cool down
very nicely, thank you, and start experiencing condensation.
The somewhat desparate measure of accusing me of being autistic I can
only describe as puerile. And, as for your Latin; it doesn't make
much sense as it is, so I assumed that, since you had mis-spelt
Britannia anyway, it was not unlikely that you had also intended the
genitive case, Britanniae. Even as written, ignoring the spelling
mistake, that seems the meaning that is intended.
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