Experiment on influences of inlet temperature and pressure on vortex tubes performance
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摘要: 实验研究了涡流管进出口膨胀比(2~5)、节流阀开度(1~11)和进气温度(313~373K)对涡流管性能的影响,重点分析了制冷和制热温度效应随上述参数的变化规律.研究中发现:随着进口膨胀比增加,管内涡流强度增强,不同半径处气流的角速度梯度增大,涡流制冷温度效应增强10.9%,制热温度效应增强46.5%.随着节流阀开度增加,冷/热气流之间能量交换的程度提升,涡流效应增强,冷流率增大47.3%.随着进气温度增加,涡轮管性能逐步提升.实验结果表明:进气温度每增加20K,制冷温度效应平均增幅约为12%,制热温度效应平均增幅约为5%.Abstract: Experiments were carried out to study the influences of the inlet/outlet expansion ratio (2~5), the throttle setting value (1~11) and the inlet temperature (313~373K) on vortex tubes performance. The variation of refrigeration and heating effects was obtained along with above parameters. It was found in experiments that the performance of vortex tube was enhanced with the increasing inlet expansion ratio, promoting the in-tube vortex intensity and increasing inlet the angular velocity gradient at different radiuses. The refrigeration effect increased by 10.9% and heating effect increased by 46.5% separately. With the rise of throttle setting value, the degree of energy exchange between the cold/heating flow increased, the eddy effect strengthened and cold flow rate increased by 47.3%. The performance of the vortex tube was improved with the increase of the inlet temperature. All the results show that as the inlet temperature increases by every 20K, the refrigeration effect at the cold side is enhanced by about 12%, while the heating effect at hot side is improved by about 5%.
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Key words:
- aero-engine /
- vortex tube /
- inlet temperature /
- expansion ratio /
- throttle setting value /
- refrigeration effect
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[1] Choi H Z,Lee S W,Jeong H D.A comparison of the cooling effects of compressed cold air and coolant for cylindrical grinding with a CBN wheel[J].Journal of Materials Processing Technology,2001,111(1):265-268. [2] 曹锋,王凯,邢子文,等.一种带有涡流管的高温热泵系统:中国,CN101135503[P].2008-03-05. [3] 王天舒,丁亮,王玉军,等.一种逆流式多级冷凝热泵热水器:中国,CN101922800A[P].2010-12-22. [4] 李清方,张建.高含硫化氢天然气涡流管节流阀压缩膨胀分离加热系统:中国,CN103672408A[P].2014-03-26. [5] 马廷全.涡流管能量分离过程的实验研究[D].北京:北京工业大学,2002.MA Tingquan.The experimental study of energy separation in the vortex tube[D].Beijing:Beijing University of Technology,2002.(in Chinese) [6] Ranque M G.Experiences sur la detente giratoire avec production simulaneesdun echappement dair chaud et dair froid[J].Journal de Physique et Le Radium,1933,7(4):112-114.(in French) [7] Hilsch R.The use of the expansion of gases in a centrifugal field as cooling process[J].Review of Scientific Instruments,1947,18(2):108-113. [8] Fulton C D.Ranques tube[J].Refrigeration Engineering,1950,58(5):473-479. [9] Deissler R G,Perlmutter M.Analysis of the flow and energy separation in a turbulent vortex[J].International Journal of Heat and Mass Transfer,1960,1(2/3):173-191. [10] Kurosaka M.Acoustic streaming in swirling flow and the Ranque-Hilsch (vortex-tube) effect[J].Journal of Fluid Mechanics,1982,124:139-172. [11] Gutsol A,Bakken J A.A new vortex method of plasma insulation and explanation of the Ranque effect[J].Journal of Physics D:Applied Physics,1998,31(6):704-711. [12] Aljuwayhel N F,Nellis G F,Klein S A.Parametric and internal study of the vortex tube using a CFD model[J].International Journal of Refrigeration,2005,28(3):442-450. [13] XUE Yuepeng,Arjomandi M,Kelso R.A critical review of temperature separation in a vortex tube[J].Experimental Thermal and Fluid Science,2010,34(8):1367-1374. [14] XUE Yuepeng,Arjomandi M,Kelso R.Experimental study of the thermal separation in a vortex tube[J].Experimental Thermal and Fluid Science,2013,46(4):175-182. [15] XUE Yuepeng,Arjomandi M,Kelso R.Experimental study of the flow structure in a counter flow Ranque-Hilsch vortex tube[J].International Journal of Heat and Mass Transfer,2012,55(21/22):5853-5860. [16] 吕正林.关于能量逆转及Ranpue-Hilsch效应的研究[D].北京:北京航空航天大学,2000.L Zhenglin.The research on energy reverse and Ranque-Hilsch effect[D].Beijing:Beijing University of Aeronautics and Astronautics,2000.(in Chinese) [17] Aydin O,Markal B,Avci M.A new vortex generator geometry for a counter-flow Ranque-Hilsch vortex tube[J].Applied Thermal Engineering,2010,30(16):2505-2511. [18] Khazaei H,Teymourtash A R.Effects of gas properties and geometrical parameters on performance of a vortex tube[J].Scientia Iranica,2012,19(3):454-462. [19] Pourmahmoud N,Hassanzadeh A,Moutaby O.Numerical analysis of the effect of helical nozzles gap on the cooling capacity of Ranque-Hilsch vortex tube[J].International Journal of Refrigeration,2012,35(5):1473-1483. [20] Avci M.The effects of nozzle aspect ratio and nozzle number on the performance of the Ranque-Hilsch vortex tube[J].Applied Thermal Engineering,2013,50(1):302-308. [21] Raut S S,Gharge D N,Bhimate C D,et al.An experimental modeling and investigation of change in working parameters on the performance of vortex tube[J].International Journal of Advanced Mechanical Engineering,2014,4(3):343-348. [22] Dutta T,Sinhamahapatra K P,Bandyopadhyay S S.CFD analysis of energy separation in Ranque-Hilsch vortex tube at cryogenic temperature[J].Journal of Fluids,2013,2013:562027.1-562027.14. [23] Pourmahmoud N,Rahimi M,Rafiee E,et al.A numerical simulation of the effect of inlet gas temperature on the energy separation in a vortex tube[J].Journal of Engineering Science and Technology,2014,28(1):821-825. [24] 曹勇.小流量涡流管特性的理论与实验研究[D].杭州:浙江大学,2003.CAO Yong.The academic and experimental research on features of small flow inlet for a vortex tube[D].Hangzhou:Zhejiang University,2003.(in Chinese) [25] 王征.涡流管性能及其与制冷系统的耦合特性研究[D].杭州:浙江大学,2013.WANG Zheng.A study on the coupling performance between the functions of vortex tube and refrigerating system[D].Hangzhou:Zhejiang University,2013.(in Chinese)
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