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对新型的带有液氮预冷的低温旋转阀式脉冲管制冷机进行了实验研究 ,得到了一些有意义的结果。在理论分析的基础上 ,对制冷机内部热力学过程进行了进一步的模拟计算 ,并得出结论 :间壁式换热器的效率是影响这种制冷机性能的重要因素之一。对于这种制冷机的一些内部特征作了细致的定性分析 ,并对各种损失因素进行了定量计算。
A new type of cryogenic rotary valve pulse tube refrigerator with liquid nitrogen precooling was studied and some meaningful results were obtained. Based on the theoretical analysis, the internal thermodynamic process of the refrigerator is further simulated and the conclusion is drawn that the efficiency of the wall heat exchanger is one of the important factors affecting the performance of the refrigerator. For some of the internal characteristics of this refrigerator made a detailed qualitative analysis, and a variety of loss factors were calculated.