Mass, energy, entropy and exergy rate balance in a ranque-hilsh vortex tube

Lecumberri, Edorta Carrascal; Lizarraga, José María Sala

doi:10.3926/jotse.86

Cited by 4 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. For the first time the work was investigated and the patented vortex tube scheme was in 1934 by George J. Ranque [11]. The work of the vortex tube is the following.…”

Section: Methods Materials and Research Resultsmentioning

confidence: 99%

Mathematical modeling of the heating process in a vortex tube at the gas distribution stations

Labay¹,

Savchenko²,

Zhelykh³

et al. 2019

Math. Model. Comput.

View full text Add to dashboard Cite

In all sectors of the national economy of Ukraine, issues of energy efficiency and saving of fuel and energy resources are important. Legislative changes in the branches and scientific developments of scientists allow reducing the energy dependence of Ukraine on imported fuels. One of the energy-saving measures for the transportation of natural gas is the use of a vortex tube for heating natural gas at gas distribution stations. Natural gas is heated before the process of reducing it in the gas pressure regulator to prevent the formation of crystalline hydrates within the gas pressure regulator. The complexity of the implementation of such a measure is the explosion of the fire hazard of natural gas, which makes it impossible to conduct a sufficient number of experimental studies to determine the required characteristics of the vortex tube for operation at the gas distribution station. Therefore, for the wide introduction of a vortex tube at gas distribution stations, a generalized mathematical model should be developed that would allow describing the process of heating the vortex tube of a working gas with different thermophysical parameters. In this paper, the thermodynamic and physical bases of the process of heating the compressed gases in the vortex tube are considered and the main parameters that influence the operation of the vortex tube are determined. The mathematical model of the process of heating the natural gas in a vortex tube is scientifically substantiated and improved. To improve the mathematical model of the natural gas heating process in the vortex tube, loss of dynamic pressure was determined on each characteristic section of the vortex tube and the degree of heating therein. Moreover, the mathematical model proposed by the authors allows us to determine the thermal power of the vortex tube and the amount of heat needed to heat the working gas in the vortex tube.

show abstract

“…1. For the first time the work was investigated and the patented vortex tube scheme was in 1934 by George J. Ranque [11]. The work of the vortex tube is the following.…”

Section: Methods Materials and Research Resultsmentioning

confidence: 99%

Mathematical modeling of the heating process in a vortex tube at the gas distribution stations

Labay¹,

Savchenko²,

Zhelykh³

et al. 2019

Math. Model. Comput.

View full text Add to dashboard Cite

show abstract

“…The vortex tube is a relatively simple and affordable way to demonstrate the basics of the first and second laws of thermodynamics. Further, students must apply concepts such as the ideal gas law, as well as mass, energy, and entropy balances in the analysis of such a device [5]. The results can also be used to estimate the coefficient of performance (COP) by comparing the heat output of the cold side to the energy consumed by the compressor [6].…”

Section: Ranque-hilsch Vortex Tube Inserts (Fall 2012)mentioning

confidence: 99%

Short Design Projects for an Introductory Thermofluids Engineering Course

Hastie

Haelssig

2015

PCEEA

View full text Add to dashboard Cite

The Faculty of Engineering at Dalhousie University offers a common introductory course that covers the basic principles of thermodynamics and fluid mechanics in a unified manner. This introductory course is a mandatory part of the curriculum for all engineering programs offered at Dalhousie. In this course, students are required to perform six laboratory experiments, and since 2012 students have also completed short, four-week design projects.The short design project helps students to acquire more of the graduate attributes defined by the Canadian Engineering Accreditation Board (CEAB), including design, communication, and team work skills. They also provide students with a well-deserved break from purely theoretical work in lectures and tutorials, and a chance to develop some hands-on abilities.This paper describes the lessons learned from the last three design projects, which were focused on modifications to a Ranque-Hilsch vortex tube, design of a pop-pop boat, and design of a double pipe heat exchanger. The primary challenges have been the limited engineering design experience possessed by students in their third semester of studies, the heavy workload that second-year engineering students already have, and the relatively large class size. Even though there are clear challenges related to integrating a design project into a large second-year class, the results seem to indicate that these design projects provide a positive learning experience for the students.

show abstract