Energy Separation in Vortex Tubes with a Divergent Chamber

Abstract

The vortex tube is a simple device for separating a compressed gaseous fluid stream into two flows of high and low temperature. In order to produce a high temperature separation effect, the use of a sufficiently long tube with a smooth inner surface has been standard procedure up until now. However, since such a device requires a large installation space, an attempt was made to shorten the length of the vortex chamber without any fall in the temperature separation effect by using some divergent tubes as the vortex chamber. Experimental data obtained in these vortex chambers were compared with those in the commonly used straight vortex chambers. Observation indicates that a divergent tube with a small angle of divergence is effective in obtaining a higher temperature separation and makes possible a shortening of the chamber length.

Computational investigation of different effects on the performance of the Ranque–Hilsch vortex tube

“…Takahama and Yokosawa [41] studied the effect of a divergent working tube (vortex chamber) with small angle of divergence on the performance of the VT and concluded that the divergent VT has higher temperature separation than that of the straight VT and such results could lead to shortening the vortex tube. Chang et al [42] used a divergent hot tube instead of straight vortex tube with divergence angles of 0 , 2 , 4 , 6 and 8 .…”

Untitled

“…Following present work (1 inlet nozzle), and a cubic fitting yields, (7) Following present work (2 inlet nozzles), and a cubic fitting yields, (8) Following present work (4 inlet nozzles), and a cubic fitting yields, (9) The above correlations can be used to help design a vortex tube system to obtain the highest temperature separation in the vortex tube with insulation.…”

Energietransformation mit Hilfe des Wirbelrohres

“…Woher diese hohen Irreversibilitäten im Wirbelrohr kommen, wird aus einer detaillierten Betrachtung der Strömung und des Energietransports im Eingangsgebiet, auf der Warmgasseite und auf der Kaltgasseite sichtbar. Seit den experimentellen Ergebnissen von Hilsch hat es eine Flut von experimentellen Untersuchungen gegeben, die durch lokale Vermessungen der Temperatur-, Geschwindigkeits-und Druckfelder zur Aufklärung der stattfindenden Mikroprozesse beigetragen haben, beispielhaft seien die Arbeiten von Takahama [4], Bruun [5], Stephan [6] und Camiré [7] genannt. Damit wurde eine Grundlage für die Evaluierung von Strömungs-und Energietransportmodellen geschaffen, z.…”