Andrew M.A. Cater wrote:
On Mon, Dec 04, 2006 at 09:13:38AM -0600, Eric Shook wrote:
Hi Bruce,
Our University is also looking into these racks. We have also looked at
other vendors with similar liquid cooling and something called
"Spraycool" technology (limited in deployment) among others. I would
also be interested in the information you collect on or off the list and
would be willing to share some information.
The only things I know that used spraycool technology were big machines
like Crays and ?? Thinking Machines ?? which dunked circuit boards in
freon and sprayed the liquid to keep it moving. Surely they can't have
revived that :)
AndyC
All,
In case there is interest ...
A "spray-cool" technology is the approach taken currently in the Cray
X1. The liquid
is a high-heat capacity fluoro-carbon, fairly inert, very expensive, but
nasty if it starts to
burn. One of the key innovations on the Cray X1 is that the circuits
are "on the ceiling"
so to speak and sprayed from below. The fluid is gravity collected and
cycled up again.
A "spray-cooled" rack would seem to require hermetic enclosure at some
level if the same
liquid were used.
rbw
--
Richard B. Walsh
"The world is given to me only once, not one existing and one
perceived. The subject and object are but one."
Erwin Schroedinger
Project Manager
Network Computing Services, Inc.
Army High Performance Computing Research Center (AHPCRC)
[EMAIL PROTECTED] | 612.337.3467
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