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在分析热声工作机理， 探讨混合工质在热声制冷机中的作用机理的基础上， 从工作频率及效率的角度出发，指出了低 Ｐｒ数的混合工质对热声效应的积极作用， 有利于提高热声驱动器及热声制冷的工作效率， 低声速则有利于增强热声转换强度， 为选用合适的工作介质提供了依据。
On the basis of analyzing the working mechanism of thermoacoustic and discussing the action mechanism of the mixed working medium in thermoacoustic refrigerator, the positive effect of thermoacoustic effect on the working efficiency and low working temperature is pointed out. Which is favorable for improving the working efficiency of the thermoacoustic driver and thermoacoustic refrigeration. The low sound speed is beneficial to enhancing the thermoacoustic conversion intensity, and provides the basis for selecting a suitable working medium.