The study will also help engineers improve the operation of
refrigeration vortex tubes, which are often used in the cooling of cutting tools during machining, various electronic components, hot melts, gas samples and heat seals.
A key component of the kit is
a vortex tube, which — without any moving parts — rotates compressed air to make hot or cold air streams.
ZP says: January 27, 2012 at 6:19 am As one of the few people who have personally built, tested, modified, measured, played around with and experimented with the Ranque - Hilsch
vortex tube, I can say from personal experience that they don't shed any light on the various «gravito - thermal» hypotheses, because the vortex tubes operate on very different principles than those claimed for the gravity theories.