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<TITLE>Re: [Beowulf] 96 cores in silent and small enclosure</TITLE>
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<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>For electronics cooling..<BR>
Mineral oil, usually with a oxidation inhibitor. Shell Diala AX is what I use. For HV, dry and clean is important.<BR>
If your hardware isn’t oil compatible, then a variety of silicones (e.g. Fluorinert) are used (at substantially higher cost).<BR>
For really high power density, fluorinert in an ebullient cooling (boiling) mode is used (either by reducing the pressure in the vessel or choosing a coolant with a suitable boiling point (e.g. 40-50C)). This is a tricky design, though, because though the bubbles rising helps circulation, you have to worry about film formation, etc.<BR>
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On 4/7/10 7:13 AM, "Hearns, John" <<a href="john.hearns@mclaren.com">john.hearns@mclaren.com</a>> wrote:<BR>
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sry for another post but i just got an idea. im not sure if you have<BR>
seen that you tube video of a guy who put his whole setup in a fish tank<BR>
and was using cooking oil i believe to cool everything. would be<BR>
interesting to see the 2nd cluster put into a big enough tank and cooled<BR>
with oil.<BR>
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These systems look to have rotating platter hard drives in them.<BR>
substitute for solid state drives and you probably have a better chance<BR>
of liquid cooling.<BR>
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I'd guess having vats of cooking oil in an office environment is a no-no<BR>
- what oil do radio hams etc. use for cooling dummy loads for high power<BR>
RF work?<BR>
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