A vortex tube is a mechanical device which significantly separates the inlet gas stream into hot and cold streams and therefore provides  a  variety  of  environmentally-friendly  applications  such  as  steam  production  and  cooling.  Due  to  the  absence  of chemicals  or  electrical  parts,  there  is  no  harmful  influence  on  the  atmosphere or  environment  and  thus  can  be  utilized  in different industries. The vortex tube is simulated with 1, 3 and 5 fins installed on hot-tube using six different geometries in order to increase the efficiency of clean energy production for both cooling and heating purposes. The result of the research is then compared with prior experimental results brought in literature. This article surveys the influence of different fin shapes on critical performance  parameters  of  cold  temperature difference  ( DEL Tc),  the  hot  temperature  difference  (DEL Th),  isentropic  efficiency  and COP aiming toward producing clean energy. The modeling results indicate that the 5 triangular fins and 3 square fins have the highest and lowest cold temperature difference ( DEL Tc), isentropic efficiency and COP, respectively.

Keywords:
Ranque-Hilsch Vortex Tube; Environmental-friendly energy production; Clean Energy; Numerical simulation (CFD); Thermal efficiency; shape of fins; number of fins.