[Beowulf] materials for air shroud?

[Douglas Eadline]

David,

I have experimented with some simple ducting for my Limulus
system. I found a Vinyl Flashing from Union Corrugating Company
(purchased at Lowes home center) that has some nice features, it is
bendable, holds its shape, easy to cut, and has a low carbon content
(harder to burn than most plastics), and it is fairly stiff.

My needs are "low temp" air ducting. I have not tested it
with constant warm/hot air.

--
Doug





> Anybody know of a nice cheap, high melting point, easy to work with
> sheet material, for making a custom air shroud?
>
> We have one box with stuff in it that looks similar to HDPE, the
> material the white flexible cutting boards are made of, but it is a bit
> thinner and more rigid that that.  Unfortunately there are no markings
> on it, so HDPE is just a guess.  Whatever it is, it cut easily with
> scissors (I had to trim it slightly at one point.)
>
> Background.  We have an older Supermicro SC-823 server with dual
> processors.  The air shroud it came with only covers the first
> processor.  That didn't matter much when it had two low power processors
> in it, but after upgrading it to dual Opteron 280s, the uncovered second
> one runs considerably hotter than the covered front one.  (Swapping the
> processors around didn't help - the heat stayed where it was, so a
> ventilation issue, not a processor issue.)  Supermicro does make a newer
> shroud which extends to the back of the case, but the manual (google for
> "SC-823 air shroud user's guide") indicates that it is designed for
> Intel CPUs.  So it may or may not fit around the Opterons.
>
> The redesigned air shroud will probably work, but I'm about 90%
> confident that taping a sheet of plastic onto the back of the existing
> shroud would work as well - if I can find a plastic that won't flap
> around or melt.
>
> Thanks,
>
> David Mathog
> mathog at caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
> _______________________________________________
> Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
> To change your subscription (digest mode or unsubscribe) visit
> http://www.beowulf.org/mailman/listinfo/beowulf
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
>


--
Doug

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.