Why do the Fans collect the most dust ???

  • Thread starter Thread starter Trimble Bracegirdle
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Trimble Bracegirdle

Why do the Fans collect the most dust ???

in my PC its like that ...I would think that all that whirring round &
round

would keep the dust off.

(\__/)
(='.'=)
(")_(") mouse
 
Why do the Fans collect the most dust ???

in my PC its like that ...I would think that all that whirring round &
round

would keep the dust off.

(\__/)
(='.'=)
(")_(") mouse
Click to expand...


Because that's what moves all the air that has dust in it?
Most of the dust doesn't get stuck in the fan, it gets blown
right through it. However once some starts to build up,
that stuck dust will catch more stuck dust. Often the dust
starts out as longer particules caught on the leading edge
of the blade and then gradually extends backwards, unless
you have an environment with a lot of sticky smoke in the
air like if you're a smoker, in a kitchen/grease, or certain
industrial settings.
 
kony said:
Because that's what moves all the air that has dust in it?
Most of the dust doesn't get stuck in the fan, it gets blown
right through it. However once some starts to build up,
that stuck dust will catch more stuck dust. Often the dust
starts out as longer particules caught on the leading edge
of the blade and then gradually extends backwards, unless
you have an environment with a lot of sticky smoke in the
air like if you're a smoker, in a kitchen/grease, or certain
industrial settings.
Click to expand...

Also, since the air velocity along the surface of the fan
blades, at the surface of the fan blades, is zero, it takes
very little for dust particles to "stick" to the blades. Very
close to the surface of the blades there's very little wind to
blow the particles off.

-- Bob Day
http://bobday.vze.com
 
Krony & Bob Day thanks your info....
so its not about friction / static generated by the motion on plastic ?
Mouse
@@@
 
Also, since the air velocity along the surface of the fan
blades, at the surface of the fan blades, is zero, it takes
very little for dust particles to "stick" to the blades. Very
close to the surface of the blades there's very little wind to
blow the particles off.
Click to expand...


?? If that were true there would similarly be no air
velocity to cause the dust to get there in the first place.

If you are referring to boundary layers, they are not
actually zones with zero air movement, it's just slower
movement... and not even very slow when talking about an
air-moving surface a typical distance from the center
spinning at a (typical) couple thousand RPM.
 
Krony & Bob Day thanks your info....
so its not about friction / static generated by the motion on plastic ?
Mouse
@@@
Click to expand...


Yes, it is a matter of friction/static, that is a primary
factor that attracts dust, though whether it remains stuck
accumulating rapidly or falls off has much to do with the
other factors.
 
kony said:
?? If that were true there would similarly be no air
velocity to cause the dust to get there in the first place.

If you are referring to boundary layers, they are not
actually zones with zero air movement, it's just slower
movement...
Click to expand...

Slower and slower and slower until the tangential velocity
at the surface is zero. It's why an America's Cup type
sailboat can travel into the wind -- no tangential forces on
the sail, only perpendicular forces.

Yes, the stronger the wind, the smaller the dust particles
have to be in order for them to "stick" to the fan blades --
or to furniture. It always takes a dust cloth to get that
last thin layer of dust -- blowing on it doesn't work!

-- Bob Day
 
There is a product crying out here to be designed n marketed (mostly
marketing).
"WONDER DUST FREE FAN SPRAY ...KEEP YOUR COMPUTERS ESSENTIAL PARTS FROM
DESTRUCTIVE DUST DEPOSITS...STOP OVERHEATING...HYGIENIC & TIDY..
ONE PUFF & DUST DARE NOT COME NEAR."

Make some Bunny a fortune ...can anybody here think of an easy-find-at-home
alternative
fan-dust-sticking-stopper ?
My current comp. CPU & Video card fans at difficult angles & the need to
take it all apart
& puff, polish, & blow every e.g.. 6 months is not fun.
(\__/)
(='.'=)
(")_(") mouse
 
There is a product crying out here to be designed n marketed (mostly
marketing).
"WONDER DUST FREE FAN SPRAY ...KEEP YOUR COMPUTERS ESSENTIAL PARTS FROM
DESTRUCTIVE DUST DEPOSITS...STOP OVERHEATING...HYGIENIC & TIDY..
ONE PUFF & DUST DARE NOT COME NEAR."
Click to expand...


Why? The dust has to end up somewhere, might as well be on
the fan blades instead of more of it flowing through all the
nooks and crannies of the system. It would be more true for
the exhaust fans but at that point getting the dust out of
the system is still a larger obstacle than off the fan
blades. A better product would probably be "air filter" or
"room air cleaner".
 
Trimble Bracegirdle said:
Why do the Fans collect the most dust ???
Click to expand...

Mine dont!
in my PC its like that ...I would think that all that whirring round &
round
Click to expand...

Not the case in every PC I have encountered. Sure the fans get dusty, but
the nooks and crannies of the case and heatsinks get far dustier.
 
Lovely me again.
It is so that I permanently have the sides off my Home comps which are sat
up in corner of
my admittedly infrequently dusted / vacuumed home ...
Tho dusting n vacuuming n cleaning would stir up dust & be the worse.
Anyway my 3 1/2 year old P4 only has dust on the CPU fan
& Radeon 9800 Graphic cards Fan..
There is a little covering on other of those exposed components but not much
...the PSU's fan
doesn't seem to have collected any.
That P4 has the Intel stock heating / fan & recently I was amazed at the
amount of dust n muck I
dug out of it ...but as I say little elsewhere.
Perhaps my issue here (inspiration !) is not DUST but FLUFF ??
(\__/)
(='.'=) This is Bunny. Copy and paste Bunny into your
(")_(") signature to help him gain world domination.
 
Lovely me again.
It is so that I permanently have the sides off my Home comps which are sat
up in corner of
my admittedly infrequently dusted / vacuumed home ...
Tho dusting n vacuuming n cleaning would stir up dust & be the worse.
Anyway my 3 1/2 year old P4 only has dust on the CPU fan
& Radeon 9800 Graphic cards Fan..
There is a little covering on other of those exposed components but not much
..the PSU's fan
doesn't seem to have collected any.
That P4 has the Intel stock heating / fan & recently I was amazed at the
amount of dust n muck I
dug out of it ...but as I say little elsewhere.
Perhaps my issue here (inspiration !) is not DUST but FLUFF ??
(\__/)
(='.'=) This is Bunny. Copy and paste Bunny into your
(")_(") signature to help him gain world domination.
Click to expand...


Why is it you have such problems with doing routine things?

It's real simple. Unless someone has a properly designed,
filtered intake on their case, they're going to have to
periodically open it and clean the dust out. That period
depends on how dusty the environement and how much margin
the least-well-cooled part(s) have.

There is no point in marvelling over the basics of why dust
sticks, just clean it out and be done already. If you find
the rate at which dust builds up to be excessive, you might
also consider a room air cleaner, it will be kinder to
_your_ air passages and lungs as well as areas in a
computer.
 
Mr. Kony authoritatively informs Lovely me """There is no point in marveling
over the basics of why dust sticks, just clean it out and be done already"""

Buts its not quite that easy /...My main worry here is for my newish
Core2Due & Geforce 8800 GTX.
The Arctic Cooler Fan on the CPU & the way the 8800's built & fits in the
case means I have to remove them completely from the case to clean ...
Which will then involve unscrewing the 8800's case top to get the dust out.

Taking the CPU's Heatsink /Fan off will mean (possibly) taking out the whole
motherboard ...
IF ! the thing has not heat welded itself to the CPU's surface I will need
to clean & replace the
thermal compound ..
"""...just clean it out and be done already""" is not goin to be so easy.
(\__/)
(='.'=)
(")_(") mouse
 
Mr. Kony authoritatively informs Lovely me """There is no point in marveling
over the basics of why dust sticks, just clean it out and be done already"""

Buts its not quite that easy /...My main worry here is for my newish
Core2Due & Geforce 8800 GTX.
Click to expand...

.... which makes no difference whatsoever, it's the same dust
you'd have sticking to some other CPU or video card, and
cleaning it off is, amazingly, the same process too.


The Arctic Cooler Fan on the CPU & the way the 8800's built & fits in the
case means I have to remove them completely from the case to clean ...
Click to expand...

Ok, you have to take the video card out... and how is this
different than what someone else has to do?

If it really bothers you to have a heatsink and fan for the
CPU that are oriented sideways, think about that next time
but really it is not a big deal. If all else fails, take a
small art brush and if you find it too long to fit, cut the
handle off midway so it's shorter and more maneuverable.
It's really not a big deal to get dust off, but if you
wanted to add a filtration system, just do that instead (but
as I'd mentioned previously, a room air cleaner would go a
long way towards reducing whole room dust level which has
benefits beyond just the PC.


Which will then involve unscrewing the 8800's case top to get the dust out.
Click to expand...

So? Again this is not unlike many other cards.


Taking the CPU's Heatsink /Fan off will mean (possibly) taking out the whole
motherboard ...
Click to expand...

If you really can't do it yourself without making it out to
be a problem, take it to a shop and pay them to clean it.
Amazingly, other people manage.


IF ! the thing has not heat welded itself to the CPU's surface I will need
to clean & replace the
thermal compound ..
Click to expand...

I guess it's time to buy a new PC then... be sure to donate
your present one to someone needy, I'm sure they'd be glad
to clean the dust out when necessary.
 
Trimble said:
Why do the Fans collect the most dust ???
Click to expand...

Because they are the first devices to encounter the dust, thus the dust
sticks to them, especially if there are smokers in the house.
 
Can't let these inaccurate judgments go .
"""it's the same dust you'd have sticking to some other CPU or video card,
and
cleaning it off is, amazingly, the same process too."""

Wrong there.
My older Radeon 9800 & the CPU fans are of a very different shape / design
to
the Geforce 8800 therefor the type & quantity of Dust collected is different
...
They are certainly different in shape to need very different methods to
clean them..
The Radeon 9800 fan I clean by pressing an large damp cloth on it to lift
dust of.
The Pentium 4 Fan can be cleaned by poking around with the brush you
mention.
The Geforce 8800 will not have any of those & must be opened & blown at.
All very different.

I've just realized that the fan clips onto the Heatsink assembly of the CPU
cooler
& I will be able to easily unclip that & push something into the coolers
plates to
clean it fairly (little prayer) simply...
Mr. Kony did think o that did he !! (Triumph !)..
ANYWAYs I've decided its all about FLUFF rather than dust .
Which could explain my original question as to why all the other surfaces do
not collect
much by comparison to the Fans.
I greatly (sic) admire the supremely confident way that nice My Kony opens ,
disassembles ,
& cleans his Comp. with no wear or damage or effort even....I wish I was so
able.
(\__/)
(='.'=)
(")_(") mouse
 
Can't let these inaccurate judgments go .
"""it's the same dust you'd have sticking to some other CPU or video card,
and
cleaning it off is, amazingly, the same process too."""

Wrong there.
My older Radeon 9800 & the CPU fans are of a very different shape / design
to
the Geforce 8800 therefor the type & quantity of Dust collected is different
Click to expand...

So what? Cleaning dust is not exactly rocket science.


..
They are certainly different in shape to need very different methods to
clean them..
Click to expand...

Get over it, or pay someone to do it for you.
 
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