Open Access

ARTICLE

Experimental Study of a Helium Sorption Cooler with Low Temperature Fluctuation and Long Hold Time below 1 K

Tianshuo Liu^1,2, Xiaoyu Cui¹, Lihao Lu^2,3, Kongkuai Ying^2,*, Yang Wang^2,3, Kangjun Liu², Zilong Wang¹, Zhenhua Jiang^2,3, Shaoshuai Liu^2,3,*

1 School of Energy and Power Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
2 Shanghai Institute of Technical Physics, Chinese Academy of Science, 500 Yutian Road, Shanghai, 200083, China
3 University of Chinese Academy of Sciences, Beijing, 100049, China

* Corresponding Authors: Kongkuai Ying. Email: ; Shaoshuai Liu. Email:

Frontiers in Heat and Mass Transfer 2025, 23(3), 739-750. https://doi.org/10.32604/fhmt.2025.064532

Received 18 February 2024; Accepted 23 April 2025; Issue published 30 June 2025

Abstract

Helium sorption cooler technology is a key means to realize highly reliable low-vibration very low-temperature environments, which have important applications in fields such as quantum computing and space exploration. The laboratory designed a superfluid suppression small hole and a multi-ribbed condenser, developed a reliable-performance helium sorption cooler (HSC), and conducted experimental studies. Experimental results show that the prototype can achieve the lowest cooling temperature of 873 mK without load by filling 6 MPa helium at room temperature. The low-temperature hold time is 26 h, and the temperature fluctuation is within 0.8 mK. The cooling power of the helium sorption cooler is 1 mW @ 0.98 K @ 3.5 h. Experimental results indicate that when the charging pressure is reduced to 4 MPa, the minimum temperature decreases to 836 mK, and the hold time shortens to 16 h. When the pre-cooling temperature increases from 3.9 to 4.9 K, the hold time is reduced to 3 h.

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Keywords

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