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post #31 of 39
Reminds me of the thread where someone hooked up a car turbo to his rig.

Edit: Oh yeah... it's in my sig, lol.
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post #32 of 39
What do computers use to conduct heat away from the CPU? Air.
What would a vacuum cleaner create a scarcity of? Air.

The problem with extreme negative pressure is that there is simply less air for the heat to enter and be carried away. Perhaps if you had an equal or greater source of air blowing in it would work, but that would be silly when you could just use some fans.
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post #33 of 39
find the CFM and attach it to a heatsink as exhaust
post #34 of 39
Genius, lol!

The air-wattage of the Vac will serve to propel the fan-blades... thereby negating the need for a powered fan!




Quote:
Originally Posted by Wiremaster View Post
What do computers use to conduct heat away from the CPU? Air.
What would a vacuum cleaner create a scarcity of? Air.

The problem with extreme negative pressure is that there is simply less air for the heat to enter and be carried away. Perhaps if you had an equal or greater source of air blowing in it would work, but that would be silly when you could just use some fans.

Umm... just because a "vacuum cleaner" is called a "vacuum cleaner" DOES NOT mean that it creates a vacuum!
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post #35 of 39
I think that regular cooling solutions will work out much better. If vacuum cooling was something that would work, then Cray would have been using that instead of human blood plasma substitutes.

Vacuum, even partial negative pressures, have adverse effects on cooling. In spacecraft, cooling is a very difficult thing, even in very high vacuums, since there is little if anything to conduct the heat away, so other extreme methods have to be employed.
post #36 of 39
Why do people keep relating vacuum CLEANERS to vacuums?

There is no correlation; or am I missing something?
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post #37 of 39
Well that was a great laugh guys! but don't give up, that trillion pound patent could be just around the corner!!!

"From an engineer".......Air is actually a really bad conductor of heat (BTUs) but it's cheap and everywhere!....How bad? Lets look quickly at thermal Conductivity of a few materials to put it into perspective.........Thermal conductivity is the quantity of heat transmitted through a unit thickness in a direction normal to a surface of unit area, due to a unit temperature gradient under steady state conditions.

In other words, it's ability and efficiency to suck up and transfer heat away from the heat source...

Copper...401 - k - (W/mK)

Aluminium...250 ...Uh Hu!

Silver...429...Way cool!

Water...0.58... "What!"

Insulation...0.035... Well that figures!

Air...0.024... but,but that can't be right!...fraaaaide so!

So copper verses Air would be 401 divided by 0.024=16,708 times less efficient ???

Sucking air over a piece of flat metal barely 40mmx40mm that generates more heat per square cm than a solid rocket booster at full burn to cool it, is like giving an elephant a piece of confetti to wipe it's butt !!! the cooling is directly proportional to the surface area you supply for the moving air passing over it to carry the heat away.

I reckon your mum's gunna get mighty suspicious after you've been vacuuming your room for 15 hours straight....Ahh! What the hell ,...Go for it!

Oh yeh!...in house vac systems would be about 3000watts+ at a guess, If ya dad opens the electricity bill....RUN!

Aussie Allan....P.S see who can pick up the mistake?
    
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post #38 of 39
My girlfriend has one of those vaccumes that's built into the house, its noisy as hell are you sure your parents would let you have it running 24/7?
post #39 of 39
To sum up what i'm assuming everyone has already said,
The IHS doesn't have enough surface area to dissipate all the heat produced. It doesn't matter how much air you're pulling off of it if there isn't sufficient heat transfer.
That's the whole purpose of a heatsink, more surface area.
Get a decent heatsink, make a shroud, attach vacuum to shroud, place on heatsink...
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