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- Path: sparky!uunet!pipex!slxsys!warwick!uknet!stl!robobar!ibmpcug!exnet!dhd
- From: dhd@exnet.co.uk (Damon)
- Newsgroups: comp.arch
- Subject: Re: question on computer systems using Alpha ... (cooling)
- Message-ID: <BtED7C.5II@exnet.co.uk>
- Date: 22 Aug 92 18:11:36 GMT
- References: <1992Aug10.202955.4254@talon.ucs.orst.edu> <JAN.92Aug14135936@pallas.neuroinformatik.ruhr-uni-bochum.de> <1992Aug19.094652.11356@mole-end.matawan.nj.us>
- Organization: ExNet Systems Ltd Public Access News, London, UK
- Lines: 28
-
- In article <1992Aug19.094652.11356@mole-end.matawan.nj.us> mat@mole-end.matawan.nj.us writes:
- >In article <JAN.92Aug14135936@pallas.neuroinformatik.ruhr-uni-bochum.de>, jan@pallas.neuroinformatik.ruhr-uni-bochum.de (Jan Vorbrueggen) writes:
- >> Why doesn't anyone (to my knowledge!) use heat pipes, and/or stirling
- >> engines for cooling big chips like the alpha?
- >
- >> Look at the design of the GC machines from parsytec. ...
- >
- >> Actually, cooling shouldn't be much of a problem ... For a 16k
- >> processor GC machine, parsytec expects it to dissipate about 430kW.
- >> Sounds like a lot? Now look at a 400 horse power truck motor. 400 hp
- >> is roughly equivalent to 300kW, and the motor dissipates at least
- >> twice that in heat (efficiemcy is around 30%). No problem, all you
- >> need is a nice 60 km/h air flow into your computer room...
- >
- >But much of the truck's waste heat goes out the exhaust pipe. I don't
- >know of any way to pull the heat out of either the bitbucket or the
- >power line.
-
- Well, I think we should add a new UNIX character-special device, /dev/heatsink.
-
- (B^>)
-
- Damon
- --
- Damon Hart-Davis | Tel/Fax: +44 81 755 0077 |1.24|| Cheap Sun eqpt available.
- Internet: dhd@exnet.co.uk | Also: Damon@ed.ac.uk || US high-perf motor groups.
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