Experimental investigation of performance of hot cascade type Ranque–Hilsch vortex tube and exergy analysis

Dinçer, Kevser; Yılmaz, Yusuf; Berber, Adnan; Baskaya, Senol

doi:10.1016/j.ijrefrig.2011.01.017

Cited by 41 publications

(16 citation statements)

References 26 publications

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“…Figure 10 shows the various valve angles researchers used during analysis. Many researchers during their experimental studies (Marshall, 1977;Dyskin, 1989;Aydin & Baki, 2006;Dincer, Baskaya, Uysal, & Ucgul, 2009;Markal, Aydin, & Avci, 2010;Dincer, Yilmaz, Berber, & Baskaya, 2011;Devade & Pise, 2012;Im & Yu, 2012;Avci, 2013;Devade & Pise, 2014) have used different valves Bovand, Rashidi, & Esfahani, 2016) and shapes. Dyskin (Dyskin, 1989) used detwister on hot end and observed that the heating effect increase by 3 to5 0 .…”

Section: Effect Of Hot End Valves/plug/cones (θ)mentioning

confidence: 99%

“…Markal et al examined (Markal, Aydin, & Avci, 2010) the valve angles effect and reported that at higher valve angles, flow becomes more unstable because of sudden change in direction of hot streams. Dincer et al (Dincer, Yilmaz, Berber, & Baskaya, 2011) investigated the cascading effect on hot end, and the results state that cascading improves efficiency of the system. Devade and Pise (Devade & Pise, 2012) utilised the effect of valve angles to enhance efficiency of the tube, and observed that 60 0 angles valve was best for heating and 45 0 angles valve improves overall performance (cooling as well as heating).…”

Section: Effect Of Hot End Valves/plug/cones (θ)mentioning

confidence: 99%

“…Experimental (Saidi & Allaf Yazdi, 1999;Kirmaci, 2009;Dincer, Avci, Baskaya, & Berber, 2010;Dincer, Yilmaz, Berber, & Baskaya, 2011) and numerical (Baghdad, Ouadha, & Addad, 2012;Mischner & Bespalov, 2002) exergy analysis is performed to present cooling and heating performance in terms of exergy. Exergy efficiency of the tube is the capacity to utilise the available energy.…”

Section: Exergy Studiesmentioning

confidence: 99%

“…Kirmaci (Kirmaci, 2009) mentioned that exergy efficiency of oxygen is more as compared to air and exergy loss increases with pressure at inlet. Dincer (Dincer, Yilmaz, Berber, & Baskaya, 2011) et al observed that exergy efficiency is dependent on inlet pressure, CMF and velocity of cold end stream. Dincer also concluded that the exergy efficiency of cascade system is 80 to 90% more than single RHVT.…”

Section: Exergy Studiesmentioning

confidence: 99%

See 3 more Smart Citations

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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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.

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Section: Effect Of Hot End Valves/plug/cones (θ)mentioning

confidence: 99%

Section: Effect Of Hot End Valves/plug/cones (θ)mentioning

confidence: 99%

Section: Exergy Studiesmentioning

confidence: 99%

Section: Exergy Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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“…It has generally been observed that the working gases, within a tube, expand differently, due to their dissimilar properties. This difference principally indicates the significant impact of the gas property on both the temperature variation in the expansion process, as well as the cooling performance of the vortex tube [30,[34][35][36][37][38]. Based on the diverse cooling performance of a vortex tube through the use of different working fluids, further analysis of the expansion process is conducted to identify the impact of the fluid property and hence to contribute to the understanding of the expansion process.…”

Section: Introductionmentioning

confidence: 99%

The Expansion Process in a Counter-flow Vortex Tube

2015

J Vortex Sci Technol

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The process of temperature separation in a Ranque-Hilsch vortex tube is dependent on a multitude of factors, such as the pressure gradients, flow stagnation and mixture, energy transfer between different flow layers and heat transfer between the tube and the ambient air. The pressure gradient in an expansion process within a vortex tube has been proposed as the dominating reason for the temperature drop. However, at present, there is no general agreement within the research community for the expansion process itself, primarily due to the complexity of the internal flow conditions in the tube. Therefore, in the present article, a deeper insight into the separation mechanism within a vortex tube is presented, based on an analytical analysis using different expansion models, including isentropic expansion, free expansion and Joule-Thomson expansion. It was observed that the isentropic expansion is the only possible expansion process within a vortex tube. This was confirmed through comparison with experimental results obtained from different sources. The Expansion Process in a Counter

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Issues and prospects of energy separation in vortex tubes: Review

Devade¹,

Pise²

2017

Heat Trans. Asian Res.

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A vortex tube is a device that separates entering compressed fluid into hot and cold fluid streams simultaneously. This energy separation phenomenon inside the tube is a mystery and the mechanism that causes heat transfer needs attention. Since the invention of the vortex tube, the scientific community has taken efforts to search for energy separation mechanisms. Performance augmentation and the physics of energy separation was the objective of many experimental studies. The performance of the vortex tube varies with changes in geometric and operational parameters. Most of the theoretical studies addressed the issue of energy separation. Prospects and issues of energy separation in a vortex tube in view of the literature is the core of this paper. The main objective is to discuss efforts made in order to justify the physics and to identify new areas for research.

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Experimental investigation of performance of hot cascade type Ranque–Hilsch vortex tube and exergy analysis

Cited by 41 publications

References 26 publications

Parametric Review of Ranque-Hilsch Vortex Tube

Parametric Review of Ranque-Hilsch Vortex Tube

The Expansion Process in a Counter-flow Vortex Tube

Issues and prospects of energy separation in vortex tubes: Review

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