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液氢温区直接节流JT制冷机降温实验

Vacuum and Cryogenics(2022)

Cited 0|Views11
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Abstract
空间用大冷量低温制冷机是实现液氢长期在轨零蒸发贮存的关键技术之一.预冷型液氢温区直接节流JT制冷机无低温运动部件,结构简单,降温过程无需旁通,具备实现空间大冷量制冷的潜力,可单独实现冷量远距离传输.采用直接节流流程方案搭建了用GM制冷机预冷的液氢温区直接节流JT制冷机开式系统实验测试平台,阐述了制冷过程,分析了降温过程存在的问题,在20.8 K测得了10.19 W制冷量.
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