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Can anyone recommend any good references on the Ranque-Hilsch Vortex tube?
I have a very dedicated and resourceful student (high school senior) who
wants to build one (his idea, not mine.) We have looked together for
references but not turned up much that was helpful.
Most references we found were fairly vague as to construction details.
There is, apparently, a good reference in the Amateur Scientist column in
the November 1958 issue of Scientific American, but we're still working on
getting our hands on a copy.
I would also like to hear it if anyone had a good way of explaining how
this thing works. The descriptions I have read have been fairly
hand-wavy.
My student's first model R-H tube did not accomplish any appreciable
temperature differences.