Electrostatic Cooling

[Ice Czar]

"alternative" sources get tied up in conspiracy theories so the term electrostatic cooling is largely useless for research
http://www.rexresearch.com/blomgren/blomgren.htm
however when you dig past that into patents and the search terms of
corona wind
corona electrostatic convection
electrostatic precipitation
Kulacki Velkoff electrostatic
Electrohydrodynamics

the validity of electrostatic heat transfer enhancment is relatively well documented and quantified

http://www.ee.washington.edu/researc...lectronics.pdf


one of the interesting points is that it is both applicable inside a coolant circuit as well as outside, thus enhancing heat transfer from a waterblock to the coolant from the coolant to a radiator and from a radiator to the air are all possible given the right arrays.

theory in a nutshell corona ion effect enhances turbulance allowing for a better swapout of the boundary layer

it also leads sideways into fringe antigravity\electrogravity science (based on the Biefeld–Brown effect)
http://en.wikipedia.org/wiki/Biefeld-Brown_effect
which until just the other day was largely considered pipedream stuff
but may infact have some interesting accepted corollary corroboration
http://www.esa.int/SPECIALS/GSP/SEM0L6OVGJE_0.html
http://www.newscientistspace.com/art...yperspace.html
it will be interesting to see if any of the fringe gets recognized\incorporated

[Dunno]

A very interesting subject in my opinion Ice Czar.
I started a thread about this but cant find it anywhere.

Heat is about moving atoms; the hotter a solid the faster the atoms vibrate, or something like?
This means that the electrons are also much more excited in a hotter solid.
There are some people that believe removing these more excited electrons and replacing them with less excited ones, using the method you describe, will have a further cooling effect.

So:
Quiet airflow.
Boundry layer negated.
Possible extra cooling due to electron replacement.

The downside is 30 000 Volts.
But hey; Thats whats in your CRT monitor, and no-ones scared of touching their monitors!

Link to another thread:
http://forums.procooling.com/vbb/sho...ghlight=lifter

[Ice Czar]

as far as the downside goes
its the amps not the volts that kill you

Id think EMI would be the bigger technical issue
Id also worry about conductive paths from the waterblock to the IHS or die
less so from the rad to a case (since it is low amps) and would be relatively easy to address
the proper dielectric precautions for a waterblock however might be challenging

any homegrown application would involve alot of isolated grounding and faraday cage action

as far as electron secondary effects, I saw alot of speculation in the "alternative" path, but wasn't able to access enough in the peer reviewed path to determine if that was quantified or not.

[maxSaleen]

Put your hand on an negatively chaged baloon and it's 10,000V....


Very interesting stuff....

I'm reading it.....

[bobo5195]

i'm really going to have to post some stuff on exactly what the boundary layer is.

It is definitly no negated.

Losses and problems of 30000V are not unimportant and this looks to be of little use due to this. Efficantcy doesn't normally matter in real life, especially for electronics cooling. What does matter is the isolation that would be needed to put this by electronic devices.

[Dunno]

A CHANGE in magnetic field near a conductor induces current flow in the conductor.
A CHange in current flow in a conductor induces a magnetic field around it.
So; As DC Voltage causes no CHANGE in current flow, EMI (Electro Magnetic Interference) is not a problem here.

100 uA @ 7500 Volts is very little. The spark will burn you though.
= ??? A @ 30 000 Volts. Im guessing 1 or 2 mA?

Boundry layer:
If air is blowing over a solid surface; How fast are the air molecules, directly in contact with the solid's surface moving?
Very little, if at all.
The layer of molecules just above is moving a bit faster, and so on....

If an electron flies from on electrode to the other you can be sure its really moving!
115 000 Km/h comes to mind, but I could be wrong.
These electrons bump into air molecules on the way over; imparting some of their velocity to them and inducing the airflow.
You can be pretty sure that when these electrons crash into the surface of the other electrode the WILL dislodge the air molecules in the boundry layer, in dramatic fashion!
This will allow other, cooler air to come directly into contact with the surface to be cooled.
ie: NO BOUNDRY LAYER!

If I were to try this I would use water cooling, Exos type;
The radiator would be one electrode with very thin wire as the other;
The thin wire @ -30 000 Volts and the Rad. @ 0 Volts (Earthed) Still = a Potential Difference of 30 00 V.
Electrics from an old CRT monitor can be used for this.

Now it starts getting technical! So wont try to explain now.
The Rad. could not have any fins.
This would negate airflow....
This disadvantage would be offset by Zero boundry layer...
I would also still earth the water block...

So the only advantage really, to doing this, would be silent cooling.
( Assuming you watercooled everything)
And perhaps the calm electron thing...
The Negativly Ionised air would be nice too... (Google Air Ionizers)

[Joe]

you could sell em through The Sharper Image hehehe

[Butcher]

30,000V isn't dangerous if you have current limiting circuitry (1mA or lower is fine). Without that though, you touch it, you're fried.