Open Access

ARTICLE

EXPERIMENTAL AND 3D-CFD STUDY ON OPTIMIZATION OF CONTROL VALVE DIAMETER FOR A CONVERGENT VORTEX TUBE

Seyed Ehsan Rafiee^*, M. M. Sadeghiazad

Department of Mechanical Engineering, Urmia University of Technology, Urmia, Iran

* Corresponding Author: Email:

Frontiers in Heat and Mass Transfer 2016, 7, 1-15. https://doi.org/10.5098/hmt.7.13

Abstract

The aim of this investigation is study on separation phenomenon inside a special vortex tube affected by structural and physical factors including; throttle diameter, nozzle number and injection pressure as well as the parametric optimization based on separation efficiency using experimental and 3D-CFD methods. The results show that convergent VT with Dth=5.5mm provides 30.01% and 20.04% higher cooling and heating effectiveness compared to basic model. As another result, the higher injection pressure, the higher cooling effectiveness. The cooling effectiveness improves (16.86%) with increase in slot number up to N=4, then decreases. The maximum disagreement between experimental and predicted values is 6.25%.

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Keywords

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