Experience from the Operation of a Conical Vortex Tube with Natural Gas

Poshernev, N. V.; Khodorkov, I. L.

doi:10.1023/b:cape.0000013600.10283.24

Cited by 17 publications

(7 citation statements)

References 1 publication

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“…As mentioned, previous experimental studies show that the maximum refrigeration capacity and the adiabatic efficiency of a RHVT always falls within the range of 50-70% cold mass fraction, irrespective of the diameter of the cold outlet [25,26]. As seen in fig.…”

Section: Resultsmentioning

confidence: 57%

“…Past experimental studies show that the maximum refrigeration capacity and the adiabatic efficiency of a RHVT always fall within the range of 50-70% cold mass fraction, irrespective of the diameter of the cold outlet [25,26]. Nimbalkar and Muller [26] tried to explain this issue by considering the movement of the stagnation point inside the tube.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation on cooling performance of Ranque-Hilsch vortex tube

Pouraria

Park

2014

THERM SCI

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A Ranque-Hilsch vortex tube is a mechanical device that separates a high pressure gas stream into low pressure hot and cold streams. In this study, four different two equation turbulence models namely the standard k-e, RNG k-e, Realizable k-e, and Standard k-w models were compared to identify the appropriate turbulence model for studying the energy separation effect in a Ranque-Hilsch vortex tube. Comparison between the numerical and experimental results indicates that the Standard k-e model is better than other models in predicting the energy separation phenomenon. The distributions of temperature, pressure, and components of velocity have been obtained in order to understand the flow behavior inside the tube. The effect of cold outlet diameter on temperature drop and refrigeration capacity was studied. The effect of cold mass fraction on the movement of stagnation point and refrigeration capacity has been investigated. Moreover, the feasibility of improving the cooling performance of vortex tube using the cooling system was investigated. The present numerical results revealed that using the cooling system, the net energy transfer rate from cold inner region to the hot peripheral region increases, thereby improving the cooling performance of the device.

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Section: Resultsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Numerical investigation on cooling performance of Ranque-Hilsch vortex tube

Pouraria

Park

2014

THERM SCI

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“…Nikolaev et al [24] observed the range of 0.6e0.7 for optimum cold mass fraction. Poshernev and Khodorkov [25] stated optimum cold mass fraction is occurred between 0.5 and 0.6. Nimbalkar and Muller [19] are the only researchers which reported a fixed value of 0.6 for optimum cold mass fraction.…”

Section: Instrumentmentioning

confidence: 96%

“…This is why there is an optimum point at which maximum cold temperature difference occurs. Nikolaev et al [24], Poshernev and Khodorkov [25] and Nimbalkar and Muller [19] reported different optimum cold mass fraction. It is here believed that vortex tube design and pressure distribution are the reasons for variation in optimum cold mass fraction.…”

Section: Nozzle Area Effect On Vortex Tube Performancementioning

confidence: 99%

Improving vortex tube performance based on vortex generator design

Farzaneh–Gord

Sadi

2014

Energy

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“…In addition, Poshernev and Khodorkov (2003) also stated that the maximum magnitude of temperature separation and effectiveness of the vortex tube was found between 0.5-0.6 cold mass fraction. The results of the present experimental investigation also follow a similar trend, obtaining maximum performance at 0.6 cold mass fraction.…”

Section: Fig 9 Line Diagram Of Primary and Secondary Flow Inside The ...mentioning

confidence: 98%

Experimental and CFD Analysis on the Effect of Various Cold Orifice Diameters and Inlet Pressure of a Vortex Tube

Bagre

Parekh

Patel

2023

JAFM

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An experimental investigation was conducted to investigate the effects of different cold orifice diameters and operating pressures of the vortex tube. A vortex tube test rig was employed to conduct the experiments for various cold orifice diameters and operating pressures. Cold orifice diameters range from 1 mm to 6 mm, whereas the pressure condition ranges from 2 to 5 bar. The vortex generators were made up of brass material having six inlet nozzles. It was found that the temperature separation of the vortex tube significantly depends on the cold orifice diameter of the vortex tube and operating pressure. The study demonstrates the deviation of cold temperature separation with respect to the cold orifice diameters and inlet pressure for different cold mass fractions. In addition, present experimental results are used to determine the optimum cold orifice diameter, which is 5 mm at 5 bar inlet pressure. The percentage improvement in average cold temperature separation for 5 mm cold orifice diameter is 66.18% compared to rest of the cold orifice diameters at an inlet pressure of 5 bar. The maximum cooling power separation is 0.08 kW at 0.3 cold mass fraction and inlet pressure of 5 bar. The CFD technique was approached to discuss the complex fluid flow inside the tube at various radial distances. A three-dimensional numerical study was done and validated with the present experimental work. It was found that the numerical results are in good agreement with the present experimental data.

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Experience from the Operation of a Conical Vortex Tube with Natural Gas

Cited by 17 publications

References 1 publication

Numerical investigation on cooling performance of Ranque-Hilsch vortex tube

Numerical investigation on cooling performance of Ranque-Hilsch vortex tube

Improving vortex tube performance based on vortex generator design

Experimental and CFD Analysis on the Effect of Various Cold Orifice Diameters and Inlet Pressure of a Vortex Tube

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