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Vortex tube is a non-conventional device which is capable of separating hot and cold gas stream from an inlet gas stream with proper pressure energy. Number of researches has been carried out in order to identify the parameters which affect Vortex tube performance. The performance of the vortex tube depends on types of parameters, firstly inlet air pressure of compressed air, cold mass fraction and secondly tube or geometric parameters such as length of hot side tube, cold orifice diameter, number of nozzles, diameter of nozzle, cone diffuser angle and also material of vortex tube affects Coefficient of Performance. The RHVT (Ranque Hilch Vortex tube) has been used for many appliances in different engineering applications. Because of its compact design and low maintenance requirements, it is very popular in cooling and heating processes. Despite its simple geometry, the mechanism that produces the temperature separation inside the tube is fairly complicated. There is no theory so perfect, which gives the satisfactory explanation of the vortex tube phenomenon as explained by various researchers. In this paper we have experimentally studied the pressure vs. temperature graphs and result conclusions for different valve angles of diffuser and the material used is cast iron.

Investigation of Vortex Tube by Changing Diffuser Angle