Abstract
Vortex tube is a simple mechanical device which splits compressed gas into cold and hot streams. It can produce cold stream down to around -30-C and hot stream up to around 130-C. Vortex tube is use in a wide variety of industrial fields, especially as a cooling device. Until now, there are a lot of theories about thermal energy separation phenomena inside the vortex tube, however, these theories are still debatable. In the existing literature, a lot of researchers used air and nitrogen as a working fluid. In this research, helium and air are used as a working gas and the experimental results are compared with theoretical result in order to deeply understand the mechanism of the temperature separation of the vortex tube.
