AirBlock.

[HaydenNZ]

Anyone ever thought about pumping a **** load of air through a water block? ... could pump air through as many water blocks ars u liked and it would be quiet if u put a filter on the output.. ( foam or something. )

[Wibber]

WTF? why would you bother? water works much better

[SilverPriest]

Because water is a crapload better @ moving heat than air is.
Period.

[HaydenNZ]

Correct silverpreist.

It was purely an idea floating through my mind, safer than water, yet possibly the same reesults depending on how much air u were to push through it.... i've got cooling pretty much handled by custom phase change -20C full load.

http://funkpc.orcon.net.nz/Blan/2.htm

[HaydenNZ]

Essentially replacing a water pump with a hefty air pump, would be really interested to see how it would go.

[whetu]

well get a liquidcc waterblock, hire out a compressor from hiremaster or the like and find out. then write an article about it and get the kewl guys over at radiative to fine tooth comb it and put it up :rolleyes:

[KingJackal]

I'll put $20 on it getting waaaaaaaaaaaaaaay too noisy for a layer of foam of make silent by the time it reaches the same heat-transfer ability as an Eheim and water :p.

But either way, I WANT PICS!! :D

[whetu]

Originally posted by KingJackal
I'll put $20 on it getting waaaaaaaaaaaaaaay too noisy for a layer of foam of make silent by the time it reaches the same heat-transfer ability as an Eheim and water :p.

But either way, I WANT PICS!! :D

LOL i hear that *imagines the sound of his old spraypainting compressor - "WHIIRRRRR CHUGCHUGCHUGCHUG WHIRRRRRRR"*

hmmm compressor vs eheim.... hmmmmmmm :D

[HaydenNZ]

small 12v air compressors for pumping up tyres is what u'd be after...think it COULD work quite well.

[HaydenNZ]

should buy one from the warehouse, test it, then take it back ( money back garentee my ass )

[SilverPriest]

Actually.
I did see a device which went SOMEWHAT along the same line.
Except it broke up the compressed air into 2 streams. Hot and cold.
I've lost the bloody link though :mad:
I wont even pretend to explain how it worked, but from what i read it was fairly simple, and worked pretty well.
Still, you would need some HELL airflow, as basically its just a crappy heatsink on crack innit.
Considering its designed for water....
Need some pretty heavy turbulence @ the "airblock" end to pull it off.
Most interesting......
Like LN2, fun to play with, but utterly impractical for any real purpose other than messing about :D

[HaydenNZ]

It is most interesting indeed, think how much a fan delivers, then think how much a tyre pump ( of the 12v kind ) could deliver, and the fact that its more concentrated.

I will certinally have a play in my spare time.

[Tojja]

ROFL, oh my sides!

Imagine a waterblock-like device, and pumping air through it.

Um, HEATSINK anyone :D

I know there are some cosmetic differences, but jeez, we are talking about the same thing here, just with much lower surface area....

If you are gonna do the compressed air thing with ANYTHING (which would be fun, you are right - I will have to borrow ma's compressor now), try it on a heatsink first - they are designed to use air as the heat transfer medium remember ;)

/edit - but I see where you are coming from re: not having air going everywhere - can be a fun project this weekend :)

[Mashed_Penguin]

You could "shroud" the fins of a heatsink somehow and have air in/out connectors on it. Then blast it with compressed air. And if you want it to look cool get a big ass belt drive compressor from hire quip :D

Let us know if it works :)

[mird-OC]

umm yeah sure... why not :rolleyes:

essentially you're taking a traditional air cooling system but reducing the surface area and narrowing the inlet and outlets.

good for a laugh, and it'd even work to a certain extent, but not something you could package and market ;)

stick to phase-change matey...

[Gh0s7 L3mUr]

ROFLMAO :D

Are you thinking of cooling the air first or using the "flow" to cool the block?

[I.R]

HaydenNZ whatever you're on can you hook me up wif some of that **** :p

[Volodkovich]

there would be no point, and it would be plain stupid to use a normal waterblock, u would need a watersink, and convert it, or as Mashed_penguin said, a shrouded heatsink.
However, i would say the most performance u could get out if it would be similar to a alpha with a delta on it, but with a whole lot more noise! (yes i know how loud an air compressor is, dad's one is f*cking loud when it actually compressors the air, and its not only a noise, its bloody annoying *GERRRRRR* noise every minute). Also, i dont think an compressor would be the best thing to use. What is the point in compressing the air, when all you want ot do is push it fast? I reckon a ducted fan, in a tube would be a whole lot betta, as u could get the air flowing faster without losing any hearing...

IMHO, it is prolly a bit of a waste of time, as i doubt u will get much more performance than a top-rated heatsink and fan. But dont let that stop you! It would certainly look phat...

[H2gO]

Originally posted by HaydenNZ
Correct silverpreist.

It was purely an idea floating through my mind, safer than water, yet possibly the same reesults depending on how much air u were to push through it.... i've got cooling pretty much handled by custom phase change -20C full load.

http://funkpc.orcon.net.nz/Blan/2.htm

water - don't you know you're swimming in IT :D

where's the " Danger" I don't understand :rolleyes:

:confused:

[-=DEI[]v[]OS=-]

If I'm right, you wanna use a waterblock, and instead of pumping water thru it you wanna pump huge amounts of air ?

I'm no expert on this but have you ever used a bike pump to pump a tire up.......the nozzle of the pump gets warm becoz of the friction of the air passing thru it.

Now surely if you used a compressor to pump air thru a waterblock, you'd get an increase in the block temperature, and the higher the pressure, the more you'd warm the waterblock.

If this is indeed what you were thinking of doing I don't think it'd work too well :p

Hmmm for some reason I've got pictures of a turbo charged car with a HUGE intercooler stuck in my head now ?!?!

[Ice Czar]

Originally posted by HaydenNZ
Anyone ever thought about pumping a **** load of air through a water block? ... could pump air through as many water blocks ars u liked and it would be quiet if u put a filter on the output.. ( foam or something. )

Enthusiasim and inventiveness noted
However, the laws of physics have conspired to deny you.

1. The density of a liquid vs a gas is somewhere on the order of 40:1 or better, that is 40 hot molecules vs 1 hot molecule to transfer the heat.

2. Both liquids and gases are fluids and so experience the same flowrate limitations (only at different reynolds numbers) trying to stuff enough air through the same passgae that water would employ would be futile at any speed or pressure.


SilverPriest


Your describing a Vortex Tube
A Vortex Tube is a device with no moving parts that will convert an ordinary stream of compressed air into two streams-one hot and one cold. A Vortex Tube can produce cold air down to -50 degrees F. and hot air up to 260 degrees F.
http://www.artxltd.com/vortex/principle.shtml
and they are employed as cabinet coolers for electronics already
http://www.exair.com/cabinetcooler/cc_page.htm

Tonight my spelling sucks, but Im too lazy to fix it :rolleyes:

[SilverPriest]

Ah, thankyou, was wondering what the name was, cheers mate :D

[varkk]

Originally posted by -=DEI[]v[]OS=-
I'm no expert on this but have you ever used a bike pump to pump a tire up.......the nozzle of the pump gets warm becoz of the friction of the air passing thru it.

Actually, it is not the friction which heats up the nozzle, what happens is when you compress a gas, you do work on it, this means you are putting energy into it, this energy goes into heat energy in the gas. If you do it fast(as in a bike pump) this energy has no time to escape so it can heat up quite a bit.

This is a very basic description, if you want a better description go dig out a physics text....

[Ice Czar]

The way they make liquified air (which is then seperated into Liquid Nitrogen and Oxygen + a couple of trace elements) Is to:

1: Dry it
2. Compress it
3: Run it through heat exchangers (which are generally cooled by the end product, making this a very efficent process as far as industrial processes go)
4: Remove the last bit of energy (read heat) by having the cooled and still compressed air perform wiork against a piston (and incidentally recovering abit more energy adding to the effiecency)

this last stage liquifies the air