Vortec Cold Air Gun model 106-8 vortex tube

[millerman]

I have an older vortec cold air gun - images when I get home. Works good I have no real use for it. I acquired it years ago from a machinist friend when he retired. Its an older version than what you see on google. I was thinking somewhere around $50 or a trade ?

Its a tool used to cool things down without messy coolant. It gets frosty cold.

any interest ?

[Chicago_X]

PM sent.

[TexasLumens]

@millerman

I have an older vortec cold air gun - images when I get home. Works good I have no real use for it. I acquired it years ago from a machinist friend when he retired. Its an older version than what you see on google. I was thinking somewhere around $50 or a trade ?

Its a tool used to cool things down without messy coolant. It gets frosty cold.

any interest ?

PM Sent…anxious to see images. Thanks. Dan.

[millerman]

[millerman]

The white fitting is the cold side. Its just a compression fitting on . I think its 1/2” coming out of the aluminum. The fitting brings it to 3/8 npt. On the left end is an adjuster and hot air comes out of this side. Use it to dial in the cold air flow guess you could heat your coffee cup with the exhaust….

[Ford_Prefect]

Damn. I had no idea these were worth that much. I honestly just tossed a few old but working (and newer) versions of these. One mans trash…

[millerman]

[millerman]

In this pic you can see the brand name and it looks like it has been soldered at that fitting. Not sure if that is original or not but been like that since ive had it the las 15 years

[Pinetreebbs]

Very technical explanation on how they work:

After a serious analysis of the consequences of his law, Maxwell permitted himself a touch of humor. He suggested that there was a statistical probability that; at some time in the future, all the molecules in a box of gas or a glass of hot water might be moving in the same direction. This would cause the water to rise out of the glass. Next Maxwell suggested that a system of drawing both hot and cold water out of a single pipe might be devised if we could capture a small demon and train him to open and close a tiny valve. The demon would open the valve only when a fast molecule approached it, and close the valve against slow molecules. The water coming out of the valve would thus be hot. To produce a stream of cold water the demon would open the valve only for slow molecules.

From a Scientific American Amateur Scientist article at the link below.

http://www.visi.com/~darus/hilsch/

[millerman]

With muffler add on and it uses 8 cfm of air