Abstract
The performance characteristics of double stage vortex tubes have been investigated and compared with that for a single stage tube operating at the same inlet conditions. The effect of the diameter ratio of the second stage to the first stage tube (D2/D1) together with the operating pressure ratios for each stage were investigated. The analytical study of the process of energy separation taking place in the double stage tube have shown that the performance of the first stage isalways higher than that of the second stage tube. This conclusion was also verified experimentally. On the other hand, the experimental data have shown that the maximum temperature drop produced by the double stage vortex tube improves at higher inlet pressures (Po) and excels that of conventional single stage tubes when that pressure exceeds 3 bar. Best cooling performance for the double stage tube is achieved when the diameter ratio D2/D1 approaches unity. Also, the optimum value for the intermediate pressure (Pc1) for the double stage tube is expressed by: 0.45, Pct = Po. Experimental results have also indicated that; under all conditions of operation, the refrigerating effect produced by the double stage operation is always less that for the single stage operation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Conference on Aerospace Sciences and Aviation Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
