Investigations on the Dynamic Characteristics of the DC Linear Compressor for Space-borne 2 K-class Hybrid Cooling System [空间应用型2 K 温区复合制冷系统直流线性压缩机动态特性研究]

作者：Tan J.; Zhao Y.; Zhao B.; Zhang T.; Tan H.; Xue R.; Dang H.

来源：Journal of Engineering Thermophysics, 2023, 44(1): 18-24.

• 2 K temperature zone
• Dynamic characteristics
• Hybrid cooling system
• Multi-stage linear compressor unit

The 2 K hybrid cooling system has special advantages in applications such as superconducting single photon detector and deep space exploration. In this paper, theoretical and experimental investigations on the space use hybrid cooling system were conducted, especially on its multi-stage linear compressor unit. Through establishing the linear compressor model, analyses and optimizations on the dynamic characteristics of the DC linear compressor and those of the composed multi-stage compressor unit were also put forward. Once coupled with the J-T system and multi-stage pulse tube cryocooler, a lowest temperature of 2.13 K was obtained with helium-4 as the working gas, and the corresponding pressure ratio reaches 100 above.

• 单位
  红外物理国家重点实验室; 中国科学院大学