Re: Heat Transfer coefficient for He gas
- From: sidd@xxxxxxxx ()
- Date: Sun, 3 Jul 2005 02:29:34 +0000 (UTC)
In article <MPG.1d2cd2a1d8dea9569896c3@xxxxxxxxxxxxxx>,
Mike <m.fee@xxxxxxxxxx> wrote:
>
>
>Can anybody direct me to data for the heat transfer
>coefficient of He gas (4.2-300K, around atmospheric
>pressure) or, alternately, tables for viscosity, specific
>heat, thermal conductivity etc so I can roll my own using
>Nusselt, Reynolds and Prandl Nos.
>
"Thermal Conductivity of Selected Materials"
Powell,Ho and Liley NSRDS-NBS 8 (1966)
available as a pdf at
http://www.nist.gov/srd/nsrds/NSRDS-NBS-8.pdf
pp 149 et seq.
for thermal conductivity
i imaginf Lounasmaa, "Experimental Methods Below 1 K"
or the Cornell Low Temperature Handbook has helpful data
or u can dig round NIST.gov some more ...
>I need the data to do some modelling of vapour-cooled
>current leads.
>
Look in some nuclear adiabatic demag research in theses and
dissertations... i know of several dissertations that discuss the
trials and tribulations of operating 8 Tesla magnets at LHe temperatures
and the joys of a quench ... i know for sure they cooled the
magnet leads with cold He gas boiling of the 4K LHe ...
.
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