[Beowulf] 96 cores in silent and small enclosure

Lux, Jim (337C) james.p.lux at jpl.nasa.gov
Thu Apr 8 09:54:02 EDT 2010


Very pure deionized (DI) water has low conductivity, and is used in some HV apparatus, mostly because of the spectacularly high dielectric constant (80).  It's also used in some clever cooling systems where the anode of the tube is at HV, but the pump and radiator is at ground potential.
The problem is that you have to keep the water pure, because it's always dissolving whatever it's contacting.
The other problem is that liquid containing systems almost always leak.


On 4/7/10 9:57 PM, "Jonathan Aquilina" <eagles051387 at gmail.com> wrote:

i know there is non conductive water which if it gets on something shouldnt conduct electricity but how safe is a water cooled system?

On Thu, Apr 8, 2010 at 12:04 AM, Jack Carrozzo <jack at crepinc.com> wrote:
Water cooling for computers just uses the water to suck away heat, not
the boiling business (which is, however, very smart). A block from the
processor has a lot of surface area through which the water flows, so
the temperature differential between the water and the block is small
compared to other applications of liquid cooling. Hence no issues.

-Jack Carrozzo

On Wed, Apr 7, 2010 at 3:57 PM, Jonathan Aquilina
<eagles051387 at gmail.com> wrote:
> then if that is a problem then how does water cooling work?
>
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