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re: re; novel forms of refrigeration
22 feb 1999
one might add valeri kotelnikov's experiments with low-pressure vortex
tubes using a low-power fan. he says he measured a cop of 7.

and norman saunders' conceptual improvement of using a small jet engine
as a heat pump: compress air to heat and spin it, remove some heat with
a water jacket, then despin and decompress and cool it with a turbine
on the same shaft. why waste the rotational energy in a vortex tube?

nick

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