Vortex Tube Operational Temperature Regime

New temperature limits model of the Ranque-Hilsch vortex tube has been proposed within the presented paper. The model originates from the local compression/expansion and inner friction hypothesis anticipated to be responsible for the Ranque-Hilsch effect. The model in a presented form provides a fair estimation of the temperature limits at each outlet, hence enabling its application on new thermodynamic cycles studies that include vortex tube in the process. The drawback of the proposed model is its simplification by neglecting the impact of kinetic energy on the anticipated temperature values at each outlet.