[Beowulf] Innovative liquid cooling
john.hearns at mclaren.com
Fri Mar 1 08:01:57 PST 2013
> For future reference, I just looked up these thermal conductivities:
> Air : 0.024 W/m-k (at 298K)
> Water: 0.58 W/m-k (at 300K)
> Mineral oil: 0.162 W/m-k
> 3M Novec 7000: 0.075 W/m-k
Alcohol: 0.171 W/m-k
> Using this numbers,
> Water is 24x better than air
> Mineral oil is 6.75x better than air
> 3M Novec 7000 is only 3.125x better
Malt whisky is 7 times better than air.
> What is clearly much better than the other alternatives for heat
> transfer. If only it wasn't conductive, and corrosive (rust, anyone?)
No. Absolutely not.
What is clearly much better is that HPC staff be provided with a steady supply of malt whisky for cooling,
complete with a drain tap with which we can draw off frequent samples for analysis.
For the finest thermal conductivity, this should of course be combined with a supply of chilled water from Scottish mountain streams.
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