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From: John Popelish
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X-Mailer: Mozilla 4.7 [en] (Win98; U)
Subject: Re: Question about linear derating factor for MOSFETs
References: <email@example.com> <3DCF50E9.CF58D143@rica.net>
Date: Mon, 11 Nov 2002 07:15:29 GMT
NNTP-Posting-Date: Mon, 11 Nov 2002 02:15:29 EST
Phil Allison wrote:
> "John Popelish" wrote in message
> > Perhaps you could submerge the device in alcohol or freon in a large
> > chamber with all the air evacuated, so that all the space was filled
> > with saturated vapor. This can act as a heat sink over the whole
> > surface of the device with a thermal conductivity a few hundred times
> > higher than solid copper.
> ** I was pondering a source of chilled liquid mercury ( abound 0
> degrees C ) flowing across the undersurface in a laminar high velocity
> stream (like a solder flow bath) and then fed to a resevoir of solid CO2.
> What da ya reckon - a cool idea ?
Phase change is much better at carrying heat away than liquid flow.
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