On Sat, 5 Sep 2009 01:56:25 -0400, "Ed Huntress"
wrote:


"DoN. Nichols" wrote in message
...



What about a vortex cooler -- no moving parts (unless you count
the air). A bit noisy, however. :-)

Enjoy,
DoN.

Those darned things still confuse me. I've never looked closely enough to
figure out how they really work, aside from the simple expansion of air and
its consequent absorption of heat. But there's more to it, I think.

Anyway, without knowing anything about their thermodynamic efficiency, yes,
they sure look appealing from a simplicity standpoint.

Look up Hilsch Vortex tube.

They are hideously inefficient, relying as they do, on Maxwell's Demon to
separate fast and slow molecules.


Mark Rand
RTFM