不同气体对涡流管能量分离效果的影响

Effect of various gases on the energy separation performance of vortex tube

通过实验的方法,分别对以空气、氮气、氩气和二氧化碳等气体为工质的涡流管的能量分离效应进行了研究,得出了涡流管的冷热效应、制冷量、单位制冷量和COP(性能系数,Coefficient of Performance)随冷流率变化的特性曲线.研究表明:涡流管的冷热效应与工质的摩尔质量有着重要的关系,摩尔质量越大,其制冷和制热性能就越好;另外,在一定程度上还受气体本身的焦耳-汤姆逊系数的影响.对于制冷量和COP,除了跟工质的制冷效应和比热容有关外,跟摩尔质量也存在着相应的正比关系.

The energy separation performance of the vortex tube with various gases, such as air, nitrogen, argon and carbon dioxide, was studied in the experiment, whereby cold and hot characteristic curves, refrigeration output, unit refrigeration output and coefficient of performance （COP） versus cold flow rate were obtained. The results indicate that cold and hot effects are closely related to mol mass： the bigger the mol mass, the better the cold and hot performance will be; additionally, these effects are subjected to the coefficient of Joule-Thomson to some extent. Refrigeration output and COP also have a corresponding direct correlation with mol mass, in addition to refrigeration effect and specific heat at constant pressure.