Experimental study of vortex tube energy separation under different tube design

Hamdan, Mohammad O.; Al-Omari, Saleh; Oweimer, Ali S.

doi:10.1016/j.expthermflusci.2017.10.034

Cited by 63 publications

(19 citation statements)

References 21 publications

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“…Higher pressure results in lower temperature of the cold outlet. Hamdan which has performed an experiment with different dimensions and forms of vortex tube also found for the pressure at 2bar, 3bar, and 4bar [7]. However an anomaly was found at 5bar pressure.…”

Section: Presentation Of Experimental Datamentioning

confidence: 81%

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Parameters Optimization of Tube Type, Pressure, and Mass Fraction on Vortex Tube Performance Using the Taguchi Method

Sarifudin¹,

Wijayanto²,

Widiastuti³

2019

IJHT

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The purpose of this study is to analyze the parameters of cold temperature and coefficient of performance refrigeration (COPref) of the vortex tube cooling machine and how much the contribution of each parameter to the performance. This analysis also aims to predict the optimal value of cold temperature and COPref of the vortex tube as well as to predict the condition of how the optimal value is obtained. To find out whether the analysis is suitable for optimizing the performance, then the confirmation data verification is done to know the error level. The parameters considered in the experiment were the tube type consisting of natural cooling and forced cooling, the pressures are 0.5bar, 1.0bar, and 1.5bar, and fractions are 30 %, 40 %, 50 %, 60 %, and 70 %. The results of the experimental test optimized using the Taguchi method where data is reduced by selecting the three optimal fractions in each response. Obtained that tube type, pressure, and fraction are factors that influence performance with the level of error for predicting the optimal value at cold temperatures is <5 %. This study provides an analysis of the contribution of improved design of vortex tube performance parameters that are efficient experimental and reliable statistics.

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Section: Presentation Of Experimental Datamentioning

confidence: 81%

“…Changes in temperature and coefficient of performance refrigeration (COPref) are also influenced by mass fractions [3][4][5][6]. Other vortex tube performance parameters are pressure, whereas the higher pressure results in lower temperature [4][5]7].…”

Section: Introductionmentioning

confidence: 99%

Parameters Optimization of Tube Type, Pressure, and Mass Fraction on Vortex Tube Performance Using the Taguchi Method

Sarifudin¹,

Wijayanto²,

Widiastuti³

2019

IJHT

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“…Accordingly, choosing the codes of connection type and nozzle materials which are negative multipliers in the regression equation will lead to an increase in ∆T value. When the previous studies are examined, it is seen that increasing inlet pressure and number of orifices improves the performance of RHVTs [14][15][16] and that metal-based nozzle material gives better results than plastic-based one [15,17]. In addition, it is also seen from the previous studies that connection types in RHVTs influence their performance and that parallel connections increase the ∆T values [23].…”

Section: Multiple Linear Regression Analysismentioning

confidence: 90%

“…al evaluated the performances of vortex tubes in different geometric parameters (length, diameter and taper of the pipe) and different inlet pressures. Following the experimental study, they stated that the inlet pressure was considerably effective on vortex tube performance [16]. Kırmacı et.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ranque–Hilsch vortex tube performances via Taguchi method

Gökçe

2020

J Braz. Soc. Mech. Sci. Eng.

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In this study, by considering the changes in inlet pressures, connection nozzle materials and the number of orifices, the performances of Ranque-Hilsch vortex tubes (RHVTs) were modelled by multiple linear regression method at which carbon dioxide (CO 2) was used as compressed fluid, and optimum operating conditions were tried to be determined by Taguchi method. In the experiment, counterflow RHVTs having Ø10 mm inner diameter and 100 mm body length were used, hot fluid outlet of which was left completely open. In the tests designed using Taguchi L16 mix type (8 × 1 2 × 3) orthogonal array, 8 different inlet pressures (200, 250, 300, 350, 400, 450, 500 and 550 kPa), 2 different types of connections (parallel and series), 2 different types of nozzle materials (brass and polyamide) and 2 different numbers of orifices (4 and 6) were chosen as control factors and levels. Maximum temperature gradient (∆T) was determined as quality characteristics, and RHVT's performance tests were done. In order to determine the effect rates of selected control factors on quality characteristics (∆T), analysis of variance (ANOVA) was applied within 95% confidence level. According to the statistical results, it was determined that ΔT values were mostly influenced by the inlet pressure and this was followed by connection type, number of orifices and nozzle material. With the confirmation test performed, reliability of the optimization was tested and confirmed.

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“…So far there are very plenty of available researches to validate the reliability of CFD analyses for investigating the flow and temperature inside vortex tube. Mohammad O. Hamdan et al [4] studied the effect of vortex tube length on the performance of vortex tube. The research was conducted under pressure of 4bar using a vortex tube with three different length; 66 mm, 113mm and 158 mm.…”

Section: Fig 1 Schematic Diagram Of Vortex Tube [1]mentioning

confidence: 99%

The Effect of Tube Length, Cold Exit Diameter and Working Gas on The Cold Flow Temperature of Vortex Tube

et al. 2018

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A vortex tube is a simple device which works as a refrigerator, also known as Ranque Vortex Tube, Hilsch Vortex Tube, and Ranque–Hilsch vortex tube. It is used to obtain desired hot and cold gas and is widely used for spot cooling in industry. In vortex tube, the effect of geometrical parameters on the cold flow temperature of vortex tube is still unclear, and effect of certain working gas is unidentified. Hence, the objective of this analysis is to determine the effect of length of the vortex tube, cold exit diameter and different working gas. 3 different tube lengths, 3 different cold exit diameters, and 8 different types of gas are used. Simflow, which is free software, is selected to analyse the effect numerically. From the results, it is clear that the optimum tube length, cold exit diameter, and working gas are L = 175 mm, d = 4 mm and helium, respectively.

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Experimental study of vortex tube energy separation under different tube design

Cited by 63 publications

References 21 publications

Parameters Optimization of Tube Type, Pressure, and Mass Fraction on Vortex Tube Performance Using the Taguchi Method

Parameters Optimization of Tube Type, Pressure, and Mass Fraction on Vortex Tube Performance Using the Taguchi Method

Optimization of Ranque–Hilsch vortex tube performances via Taguchi method

The Effect of Tube Length, Cold Exit Diameter and Working Gas on The Cold Flow Temperature of Vortex Tube

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