Experimental Investigation of Temperature Separation in a Counter-Flow Vortex Tube

2014 ◽  
Vol 136 (8) ◽  
Author(s):  
P. A. Ramakrishna ◽  
M. Ramakrishna ◽  
R. Manimaran
Keyword(s):  
Energy Transfer ◽  
Vortex Tube ◽  
Black Box ◽  
Inlet Section ◽  
Stagnation Temperature ◽  
Counter Flow ◽  
Temperature Separation ◽  
Mass Flow Rates ◽  
Flow Vortex ◽  
Design Experiments

An experimental study of a counter-flow Ranque–Hilsch vortex tube is reported here. Literature has been divided over the mechanism of energy transfer responsible for the temperature separation in the vortex tube. A black box approach is used to design experiments to infer the relative roles of heat transfer and shear work transfer in the counter-flow vortex tube. To this end, the stagnation temperature and the mass flow rates are measured at the inlet and the two outlets. In addition, pressure measurements at the stagnation condition and at the inlet section to the vortex tube were made. Based on these experiments, it is reasoned that the predominant mode of energy transfer responsible for temperature separation in a counter-flow vortex is the shear work transfer between the core and the periphery.

EXPERIMENTAL INVESTIGATION ON TEMPERATURE SEPARATION OF DUAL FORCED FLOW VORTEX TUBE

2014 ◽  
Vol 22 (04) ◽  
pp. 1450023
Author(s):  
G. MARUTHI PRASAD YADAV ◽  
P. MALLIKARJUNA REDDY ◽  
B. UMA MAHESWAR GOWD
Keyword(s):  
Vortex Flow ◽  
Vortex Tube ◽  
Temperature Drop ◽  
Forced Flow ◽  
Flow Rates ◽  
Temperature Separation ◽  
Forced Vortex ◽  
Mass Flow Rates ◽  
Flow Vortex ◽  
Air Streams

The vortex tube is a device, which emanates hot and cold air streams simultaneously at its two ends from a source of pressurized air: warmer, gas leaves near the periphery at one end as a free vortex and colder, gas leaves via an orifice at the opposite end as a forced vortex. The forced vortex strikes back again by design modifications, result in the formation of one more forced vortex flow. Thus, the modified vortex tube is named as dual forced flow vortex tube (DFFVT). Experimental study is carried on temperature separation of DFFVT for varying pressures, mass flow rates and optimum cold fractions at two ends for efficient temperature drop is revealed. The modified vortex tube yields effectual temperature drop through one end at a lower cold fraction meanwhile providing effective cooling at the other end with higher cold fraction and vice versa.

Application of mixed level design of Taguchi method to counter flow vortex tube

2022 ◽  
Author(s):  
Hitesh Thakare ◽  
Ashok Parekh ◽  
Arif Upletawala ◽  
Bhushan Behede
Keyword(s):  
Taguchi Method ◽  
Vortex Tube ◽  
Counter Flow ◽  
Level Design ◽  
Flow Vortex

scholarly journals Numerical study of a double inlet chamber counter flow vortex tube with insulation

2021 ◽  
Vol 850 (1) ◽  
pp. 012024
Author(s):  
Ravi Kant Singh ◽  
Achintya Kumar Pramanick ◽  
Subhas Chandra Rana
Keyword(s):  
Vortex Tube ◽  
Numerical Study ◽  
Working Fluid ◽  
Turbulent Model ◽  
Counter Flow ◽  
Fluent Software ◽  
Exit Temperature ◽  
Flow Vortex ◽  
Inlet Chamber ◽  
Double Chamber

Abstract The present study intends to improve the performance of the Ranque-Hilsch counter flow vortex tube, analysed using computational fluid dynamics. In the axisymmetric 3-D, steady-state, compressible, and turbulent flow vortex tube, the air has been used as the working fluid. The ANSYS17.1 FLUENT software has been used with the standard º-ε turbulent model for different mass fraction of cold fluid and inlet pressure in the numerical simulation and validated with the experimental results. It is observed from the study that as the inlet chambers number increases from 1 to 2, there is a decrease of 7.8 % in the cold exit temperature of the vortex tube. However, insulating the double chamber vortex tube leads to a further reduction of 4.2% in the cold exit temperature. Therefore, it indicates that the overall decline in the cold exit temperature from one chamber non-insulated vortex tube to double chamber insulated vortex tube is 9.6%. In terms of cold exit temperature, it can be concluded that using a double inlet chamber vortex tube with insulation yields the optimum results.

scholarly journals Numerical Investigation of Flow Characteristics in Counter Flow Vortex Tube

2015 ◽  
Vol 127 ◽  
pp. 170-176
Author(s):  
Hitesh R. Thakare ◽  
Aniket Monde ◽  
Bhushan S. Patil ◽  
A.D. Parekh
Keyword(s):  
Numerical Investigation ◽  
Vortex Tube ◽  
Flow Characteristics ◽  
Counter Flow ◽  
Flow Vortex

scholarly journals Распределение температуры на оси камеры расширения при различных схемах работы вихревой трубы

2021 ◽  
Vol 47 (19) ◽  
pp. 41
Author(s):  
В.Н. Самохвалов
Keyword(s):  
Air Temperature ◽  
Vortex Tube ◽  
Axial Zone ◽  
Expansion Chamber ◽  
Counter Flow ◽  
Heating And Cooling ◽  
Flow Vortex ◽  
Single Flow ◽  
Vortex Tubes ◽  
Nozzle Inlet

The change in air temperature along the axis of the expansion chamber in the zones of the nozzle inlet and the flow swirler in the direct-flow, counter-flow, three-flow and single-flow vortex tubes has been investigated. It has been established that in all cases, the cooling of air in the vortex tube occurs in the zone of the swirling device, and its heating - in the zone of unwinding of the flow. The change in air temperature in the axial zone along the length of the expansion chamber occurs due to heat exchange between the heating and cooling zones.

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