A study on temperature separation in a large Vortex Tube

In the present study, efforts were made to shorten the length of a large Vortex Tube (inside diameter 800 mm and 155 mm) to reduce the insulation space requirements. As a result of experiments, it was confirmed that even a Vortex Tube shortened to a length only 6 times the tube diameter can maintain an efficiency equal to that of a longer and small Vortex Tube, if it is equipped with proper plates that forcibly stop the rotation of the stream in the tube. The authors also carried out a numerical study of Vortex Flow temperature separation, and found that in radial flow in a Vortex tube compressibility is essential to temperature separation.