TY - JFULL AU - Gürol Önal and Kevser Dincer PY - 2013/9/ TI - Experimental Study of Performance of a Counter Flow Ranque-Hilsch Vortex Tube with Inner Threaded Body T2 - International Journal of Mechanical and Mechatronics Engineering SP - 1705 EP - 1708 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/16207 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 80, 2013 N2 - In this experimental study, performance of a counter flow Ranque-Hilsch vortex tube (RHVT) with threads cut on its inner surface was investigated experimentally (pitch is 1 and 2 mm). The inner diameter of the vortex tube used was D=9 mm and the ratio of the tube’s length to diameter was L/D=12. The experimental system was a thermodynamic open system. Flow was controlled by a valve on the hot outlet side, where the valve was changed from a nearly closed position to its nearly open position. Fraction of cold flow (ξ) = 0.1-0.9, was determined under 300 and 350 kPa pressurized air. All experimental data were compared with each other, the maximum heating performance of the RHVT system was found to be 38.2 oC and the maximum cooling performance of the RHVT in this study was found to be -30.9 oC at pitch 1 mm. ER -