涡流管热冷出口压力比对其性能的影响研究  

Study on the Influence of the Hot and Cold Outlet Pressure Ratio on the Performance of Vortex Tube

作　　者：何丽娟[1] 王飒 张磊 孙尚志 高文彬 王金波 He Lijuan;Wang Sa;Zhang Lei;Sun Shangzhi;Gao Wenbin;Wang Jinbo(College of Environment and Energy,Inner Mongolia University of Science and Technology,Baotou 014010,CAina;Shanxi Zhonghe Electric Power Engineering Co.,Ltd.Xi'an 710012,China)

机构地区：[1]内蒙古科技大学能源与环境学院,包头014010 [2]陕西中河电力工程有限公司,西安710012

出　　处：《真空科学与技术学报》2019年第12期1161-1165,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金项目(51106068);国家自然科学基金项目(51566014);内蒙古自治区自然科学基金项目(2015MS0547);内蒙古自治区科技创新引导奖励资金项目(2017CXYD-1)

摘　　要：采用Fluent数值模拟的方法,以R41、R23、R32、R290、R1234yf、R134a为工质对涡流管进行三维数值模拟,得出不同工质涡流管制冷效应、制热效应以及分离效应随热冷出口压力比的变化规律,并以R41为工质分析不同流道数目涡流管性能随热冷出口压力比的变化规律。模拟结果表明:R41的制冷、制热以及分离效应最好,最大分离效应可达5 K左右;不同工质涡流管制热效应以及分离效应随热冷出口压力比的增大而增大,制冷效应随热冷出口压力比的增大而减小;不同热冷出口压力比条件下,随着喷嘴流道数的增加涡流管制冷效应逐渐降低而制热效应逐渐升高。The flow field in a vortex tube was empirically approximated,mathematically formulated with Standard k-ε Turbulence model and numerically simulated with Fluent software.The influence of the medium type and ratio of pressures at hot-and cold-outlets,ph/pc,on performance of vortex tube was investigated.The simulated results show that the pressure-ratio,medium type and flow-channel number all have a major impact.When it comes to impact on cooling/heating/separation behavior,a descending order exists:R41>R32>R23>R290>R134 a>R234 rf.And R41 the best separation of R41 is taken as the working medium to analyze its change rules.As the pressure-ratio increases,the effect of heating and separation increased,accompanied by a decrease of cooling effect.Moreover,at different pressure ratios,an increase of the nozzle flow-channel number reduces the cooling effect and enhances the heating effect.

关 键 词：数值模拟 涡流管 压力比 制冷效应 制热效应 

分 类 号：TB619[一般工业技术—制冷工程]