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'[OT] Vortex tubes / Wirbelrohr / Hilsch Ranque ...'
2005\04\20@075352 by Russell McMahon

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This is an extremely good introduction to and discussion of vortex
tube coolers. This is a commercial page from a company who sells the
products but should prove invaluable to anyone interested in making
their own. In particular tables of achievable hot & cold temperatures
for various pressures, flow rates and cold fractions are given.

       http://www.pennaircatalogs.com/Supplier%20Catalogs/Exair%20Catalog/vortex00.pdf

A vortex tube cooler uses compressed air plus a deceptively simple
'vortex tube" with no moving parts (except the air) to produce hot and
cold outlet air streams. Cold temperatures of as low as about 70 C /
130 F below inlet temperature are tabulated for some of this
manufacturer's tubes. Vortex tubes can be relatively easily made by
amateurs.

Google knows a significant amount about this subject.

2005\04\20@094509 by Spehro Pefhany

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At 11:53 PM 4/20/2005 +1200, you wrote:
>This is an extremely good introduction to and discussion of vortex tube
>coolers. This is a commercial page from a company who sells the products
>but should prove invaluable to anyone interested in making their own. In
>particular tables of achievable hot & cold temperatures for various
>pressures, flow rates and cold fractions are given.
>
>
>http://www.pennaircatalogs.com/Supplier%20Catalogs/Exair%20Catalog/vortex00.pdf
>
>A vortex tube cooler uses compressed air plus a deceptively simple 'vortex
>tube" with no moving parts (except the air) to produce hot and cold outlet
>air streams. Cold temperatures of as low as about 70 C / 130 F below inlet
>temperature are tabulated for some of this manufacturer's tubes. Vortex
>tubes can be relatively easily made by amateurs.
>
>Google knows a significant amount about this subject.

There are instructions for making your own (Rudolph) Hilsch tube cooler in an
old Scientific American Amateur Scientist article (late 1950s).

I've got a commercial version too. They eat a lot of compressed air and are
rather noisy.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
spam_OUTspeffTakeThisOuTspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com




2005\04\20@101307 by Tony Smith

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When picking up your cooler, don't forget to collect the free earplugs.

A silent vortex cooler, now that would be something.

Tony



> {Original Message removed}

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