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A modified two-stage pulse tube cryocooler utilizing double-inlet and multi-mesh regenerator

机译:一种采用双进气口和多网孔蓄冷器的改进型两级脉冲管低温冷却器

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In this paper a thermally coupled Stirling-type two-stage pulse tube cryocoolers (TSPTC) is studied using a one-dimensional (1-D) CFD code. After validating the results of the simulations, effects of synchronous utilization of multi-mesh regenerator and double-inlet on the performance of the TSPTC are investigated. Results of simulations show that non-oscillating friction factors do not possess sufficient accuracy for calculation of oscillating friction losses in non-porous media. Whereas, using oscillating friction factor of non-porous media leads to sufficient accurate results. According to the results, using multi-mesh regenerator and double-inlet increases the COP and decreases the minimum attainable temperature of the system. It is observed that a minimum temperature of 18.2 K is attainable using optimum multi-mesh regenerator and double-inlet; whereas, for a simple TSPTC with a uniform mesh regenerator, a minimum temperature of 26.4 K is concluded.
机译:在本文中,使用一维(1-D)CFD代码研究了热耦合的斯特林型两级脉冲管低温冷却器(TSPTC)。在验证了仿真结果之后,研究了多网再生器和双入口同步利用对TSPTC性能的影响。仿真结果表明,非振荡摩擦因数不具有足够的精度来计算无孔介质中的振荡摩擦损失。而使用无孔介质的振荡摩擦因数可得到足够的准确结果。根据结果​​,使用多目蓄热器和双入口可提高COP并降低系统的最低可达到温度。观察到,使用最佳的多网蓄热器和双入口可实现最低温度18.2K。相反,对于具有均匀网状蓄热器的简单TSPTC,得出的最低温度为26.4K。

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