Modification and experimental research on vortex tube

Wu, Yu; Ding, Yingying; Ji, Yanfeng; Ma, Chao; Ge, Ming

doi:10.1016/j.ijrefrig.2007.01.013

Cited by 75 publications

(32 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The discussion above presents mixed result, the similar results are available for nozzle geometries. Among all geometries tested, convergent spiral entry (Bovand, Rashidi, & Esfahani, 2016;Darokar, Borse, & Devade, 2012;Wu, Ding, Ji, Ma, & Ge, 2007), Archimedean spiral and helical nozzles (Behera U. , Paul, Dinesh, & Jacob, 2008;Ameri & Behnia, 2009;Pourmahmoud, Hassanzadeh & Moutaby, 2013;Alekhin, Bianco, Khai, & Noskov, 2015;Behera U. , et al, 2005;Piralishvili & Fuzeeva, 2005;Pourmahmoud, Jahangiramini, & Izadi, 2013;Rafiee & Sadeghiazad, 2014)are more efficient. The results are CMF dependent, certain operating conditions, show rise in separation, and fall for others.…”

Section: Effect Of Nozzle Number and Nozzle Geometry (Nn)mentioning

confidence: 99%

“…These experimental (Hilsch, 1947;Deemter, 1952;Gulyaev, 1966;Borisenko, Safonov, & Yakovlev, 1968;Saidi & Valipour, 2003;Promvonge & Eiamsa-ard, 2005;Aydin & Baki, 2006;Polisel, Rocha, & Simões-Moreira, 2007;Wu, Ding, Ji, Ma, & Ge, 2007) studies have discussed the effect of cold end diameter (Chang, Li, Zhou, & Qiang, 2011;Valipour & Niazi, 2011;Mohmmadi & Farhadi, 2013;Bovand, Rashidi, & Esfahani, 2016) on energy separation. Some studies (Nimbalkar & Muller, 2009) have reported that secondary circulation occurs because of cold orifice dimensions.…”

Section: Effect Of Cold Orifice Diameter (Do)mentioning

confidence: 99%

See 1 more Smart Citation

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

View full text Add to dashboard Cite

Vortex tube is the device that separates pressurized fluid into hot and cold fluid streams simultaneously. The scientific community has done extensive experimental and theoretical studies since invention of vortex tube to augment the performance of the tube by varying geometrical and operational parameters; the paper deals with parametric review of all such work. The review takes into account effect of almost 14 parameters on performance of vortex tube. It includes developments in tube geometry like L/D ratio, number of nozzles; hot end valve angle and cold orifice diameter etc. are discussed along with different fluids and operational parameters like CMF and stagnation point etc. The focus of most of the theoretical and experimental studies was to investigate mechanism of thermal separation and geometry optimization. The main objective of this review is to discuss efforts made in order to enhance the refrigeration effect so that, missing links could help for future research.

show abstract

Section: Effect Of Nozzle Number and Nozzle Geometry (Nn)mentioning

confidence: 99%

Section: Effect Of Cold Orifice Diameter (Do)mentioning

confidence: 99%

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

View full text Add to dashboard Cite

show abstract

“…Kurosaka [21] reported the acoustic streaming effect in the vortex tube, in which the noise generated by running the vortex tube reached around 125 dB. These drawbacks of the vortex tube may certainly limit its further application.…”

Section: Motivation and Significancementioning

confidence: 99%

“…This was identical to the conical vortex tube as reported in [16], and was reported to exhibit the same performance parameters as the normal tube, but with a smaller length. The conical vortex tube has also been investigated by Poshernev et al with regard to other chemical applications [17][18][19][20][21][22].…”

Section: Statementmentioning

confidence: 99%

Prospects of using vortex devices in cryogenics

Бондаренко¹,

Тишко²,

Симоненко³

2017

EJSI

View full text Add to dashboard Cite

A vortex tube is a Thermo-fluidic device, which generates cold and hot streams from a single injection of pressurized gas. Without any moving parts or chemical reaction within the tube, the interesting phenomenon of energy separation results only from fluid dynamic effects.The main part of a typical counter-flow vortex tube is a straight tube with a tangential injection, through which compressed gas is injected into the tube. There are two exits, located at different ends of a counter-flow vortex tube, or at the same end for a uni-flow vortex tube. A control plug is positioned inside the tube away from the injection point, which has a smaller dimension than the inner diameter of the tube, and this allows the gas to escape from the small gap between the control plug and the tube. The cold exit is located in the central part of the tube at the same end of the injection, while the hot exit is the gap between the plug and the tube.When the compressed gas is injected into the tube tangentially at a high velocity, two streams with different temperatures will be generated and exhausted from the two exits of the tube. This phenomenon of temperature separation in a vortex tube is known as the Ranque effect.Several explanations for the energy separation in a vortex tube have been proposed since its invention. However, due to the complex internal flow, the nature of the energy separation in the vortex tube, is still unclear. The proposed hypotheses can only be used to explain part of the phenomenon and they do not cover all the aspects of the temperature separation in the vortex tube. Therefore, to date, there has not been a well-accepted explanation for the thermal separation, and the flow behaviour inside the vortex tube remains unclear.This thesis presents fundamental investigations on the Ranque-Hilsch Vortex Exergy density analysis in the air-operated vortex tube was performed in this study and offered solid support for the proposed hypothesis. The analysis from this study, as well as the data from other studies, show a slightly decreased peripheral iii exergy density in the rear part of the tube, which defines the dominant contribution to the temperature rise from the stagnation and mixture due to multi-circulation.The dramatically reduced exergy density in the front part of the tube, together with an estimation of the temperature drop based on the forced vortex assumption, indicate that the pressure gradient in the front part of the tube is the primary factor contributing to the temperature drop.Based on the proposed hypothesis, discussion of various geometrical effects, such as cold mass flow ratio, tube length, tube diameter and inlet nozzle, on the tube performance has been undertaken. A good agreement between the theoretical and experimental results demonstrates the validity of the proposed hypothesis for the temperature separation occurring within a vortex tube.As a result of the study presented, a novel explanation for the temperature separation phenomenon inside a vortex tube can be forwarded, and can...

show abstract

“…6) is encountered and 10 kJ/kg of refrigeration is created at the optimum point. However, it may not be high enough, but it would be quite possible to improve the VT performance by methods suggested by Wu et al (2007) and Aydin and Baki (2006) to obtain a higher temperature drop and cooling capacity. They obtained a cold temperature difference of as much as 50 K for air at an inlet pressure of 5 bar.…”

Section: Farzaneh-gord and M Kargaran / Recovering Energy At Entry mentioning

confidence: 99%

Recovering Energy at Entry of Natural Gas into Customer Premises by Employing a Counter-Flow Vortex Tube

Farzaneh–Gord

Kargaran

2010

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

Résumé -Récupération d'énergie à l'arrivée du gaz naturel dans les installations des usagers grâce à l'emploi d'un tube Vortex à contre-courant -La réduction de la pression de gaz naturel entre les conduites de distribution haute pression et les installations des usagers est aujourd'hui assurée par des vannes de réduction de pression. Ce dispositif entraîne une perte importante du contenu énergétique du gaz. Les installations des usagers consommant trop peu de gaz naturel pour envisager d'avoir recours à des dispositifs d'expansion, notre étude explore les avantages potentiels de l'utilisation d'un tube Vortex pour la réduction de la pression de gaz naturel. Il s'agit de remplacer la vanne de réduction de pression par un tube Vortex dans le dispositif de réduction de la pression de gaz naturel et de tirer profit de la capacité de refroidissement produite. L'étude expérimentale avait pour objectif de déterminer l'effet du diamètre de l'orifice froid ainsi que de l'utilisation de l'air et du gaz naturel comme fluides sur la production d'énergie dans le tube Vortex à contre-courant. Le taux de récupération de l'énergie est déterminé à partir des mesures expérimentales. Abstract -Recovering Energy at Entry of Natural Gas into Customer Premises by Employing a Counter-Flow Vortex Tube -Throttling valves are currently utilised to reduce high-pressure natural gas flowing through the distribution pipeline to the working level of customers' equipment. This wastes valuable energy of the gas. Due to low natural gas consumption at customer premises, it is not feasible to utilise expansion machines. In this study, a new idea is proposed to take advantage of the Vortex Tube and natural gas pressure reduction. The idea is to replace the throttling valve with a VortexTube in the natural gas pressure reduction system and take advantage of the generated cooling capacity. An experimental investigation was made to determine the effects of the cold orifice diameter and the energy separation of the counter-flow Vortex Tube when air and natural gas are used as the fluid. The energy separation was investigated by use of the experimentally obtained data.

show abstract

Modification and experimental research on vortex tube

Cited by 75 publications

References 7 publications

Parametric Review of Ranque-Hilsch Vortex Tube

Parametric Review of Ranque-Hilsch Vortex Tube

Prospects of using vortex devices in cryogenics

Recovering Energy at Entry of Natural Gas into Customer Premises by Employing a Counter-Flow Vortex Tube

Contact Info

Product

Resources

About