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首页> 外文会议>2010 Frontiers in Automobile and Mechanical Engineering >Pulse Tube refrigerator-an alternative Cryocooler for low temperature applications down to 2.5K
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Pulse Tube refrigerator-an alternative Cryocooler for low temperature applications down to 2.5K

机译：脉冲管制冷机-一种适用于低至2.5K低温应用的替代低温制冷机

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A two-stage Pulse Tube Cryocooler (PTC) is developed with a no-load temperature of 2.5K in the second stage and 67K in the first stage at an operating frequency of 1.6Hz. The system gives a cooling power of 250 mW at 5K in the second stage. Several PTCs have been experimentally studied by varying the dimensions of the pulse tubes and the regenerators, as well as the regenerator materials to arrive at the best configuration. Studies conducted with several configurations indicate that the Pulse Tube dimensions are more critical compared to those of regenerator to achieve low temperatures. Also the system performance improved with the proper design of cold end heat exchangers with minimum flow impedance. These results along with cooling power characteristics of the cryocooler are discussed in this paper.
机译：开发了一种两级脉冲管低温冷却器（PTC），其第二阶段的空载温度为2.5K，第一阶段的空载温度为67K，工作频率为1.6Hz。在第二阶段，系统在5K时提供250 mW的冷却功率。通过改变脉冲管和蓄热室的尺寸以及蓄热室的材料以达到最佳配置，已经对几种PTC进行了实验研究。用几种配置进行的研究表明，与达到再生温度的蓄热器相比，脉冲管的尺寸比再生器的尺寸更为关键。此外，通过对冷端换热器进行适当设计，以最小的流阻来改善系统性能。本文讨论了这些结果以及低温冷却器的冷却功率特性。

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