Vortex Tube

I made this just to see if I could make one of these devises work without much knowledge of their optimum dimensions. Vortex tubes are devices which produce hot and cold air from pressurized air. Vortex tubes are occasionally used by machinists to spot cool items to as low temperatures as −50°C.

I was able to get temperatures 25°C colder than ambient temperature with air pressure of 6bar.