DESIGN AND EXPERIMENTAL STUDY ON THE VORTEX TUBE WITH VARIOUS TYPES OF ORIFICE NOZZLES AND ORIFICE NUMBERS

Refrigeration by vortex tube works on the principle of heat transfer between two layers moving opposite each other. Various experiments have been performed and have revealed two different approaches, one for attaining a high cold mass fraction and the other for achieving a cold end temperature. The geometry requirement is additional for the two approaches. The need is to have a tube to produce a higher mass of cold air coming out at low temperatures. For this purpose, converging type of vortex tube is experimented with, and the results are promising. The results show an increase in cold mass fraction and cold end temperature. The vortex tube is designed to overcome the disadvantage of a straight and divergent section hot tube to produce a high mass of cold air and low temperatures. An experimental study was conducted to determine the thoroughness of the behaviour. The nozzles material using ABS Plastic with different angles 30°,45° and 60° and the vortex tube with two different lengths (100 mm and 200mm), The design of the project was done with CAD and analysis using ANSYS 15.0 in addition to finding the most efficient nozzles and hot tube length, supported by experiments to identify energy-saving procedures which would apply to compressed air.