The experimental investigation and thermodynamic analysis of vortex tubes

• Published in: Heat and mass transfer Vol. 53; no. 2; pp. 395 - 405
• Main Authors: Celik, Adem, Yilmaz, Mehmet, Kaya, Mehmet, Karagoz, Sendogan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-02-2017; Springer Nature B.V
• Subjects: Cold flow; Cooling systems; Design analysis; Design parameters; Engineering; Engineering Thermodynamics; Fluid dynamics; Fluid flow; Heat and Mass Transfer; Industrial Chemistry/Chemical Engineering; Inlet nozzles; Inlet pressure; Mass flow rate; Orifices; Original; Performance characteristics; Temperature gradients; Thermodynamics; Tubes; Vortices; Increase Temperature Difference; Inlet Pressure; Exergy Consumption; Energy Separation; Vortex Tube
• DOI: 10.1007/s00231-016-1825-2
• EISSN: 1432-1181
• ISSN: 0947-7411

In the present study, it was aimed to produce a fundamental i nformation and to investigate the effects of various design parameters on tube performance characteristics by setting up vortex tube experimental system in order to study the parameters predetermined for the design of vortex tubes and by conducting thermodynamic analysis. According to the findings of experiments, as the mass flow rate of cold flow increases (y
c
) temperature of cold flow also increases, while the temperature of warm flow increases approximately to y
c
 = 0.6 and then decreases. Increases in inlet pressure, inlet nozzle surface and diameter of the cold outlet orifice increased temperature differences between cold and warm flows. Tube with L/D = 10 showed better performance than with L/D = 20. The finding that irreversibility parameter is very close to critical threshold of irreversibility proved that process in vortex tube is considerably irreversible. Coefficient of performance (COP) values in vortex tube were much lower than other heating and cooling systems. This situation may show that vortex tubes are convenient in the processes where productivity is at the second rate compared to other factors.