制冷学报2025，Vol.46Issue(2)：67-73,7.DOI:10.12465/j.issn.0253-4339.2025.02.067
百瓦级高效推移活塞型脉管制冷机实验研究
Experimental Study on a Hundred-Watt Highly-Efficient Displacer-Type Pulse Tube Cryocooler
摘要
Abstract
Displacer-type pulse-tube cryocoolers use a displacer for phase adjustment and recovery of acoustic power,leading to high refrigeration efficiency.Despite their potential,there is limited research on highly efficient displacer-type pulse-tube cryocoolers with large cooling capacities near-100 ℃.This paper presents the design of a 100-watt displacer-type pulse-tube cryocooler for low-temperature freezers and evaluates its performance,focusing on displacement motion and compressor efficiency.A validated numerical model was employed to analyze the coupling between the pulse tube and compressor and the internal phase relationship of the cold finger.Results show that under operating conditions of a 3.0 MPa charging pressure,64.9 Hz frequency,20 ℃ cooling water temperature,and 500 W input power,the cryocooler achieved a cooling capacity of 160.3 W at-100 ℃ with a relative Carnot efficiency of 22.2％.The displacer led the compressor piston by 59°,the internal phase distribution of the pulse tube was optimal,and the compressor exhibited a high efficiency of 78％.This cryocooler is the most efficient displacer-type pulse-tube cryocooler in its temperature range.关键词
脉管低温制冷机/低温冷藏/制冷性能实验/推移活塞/压缩机Key words
pulse tube cryogenic cryocooler/hypothermic storage/refrigeration performance test/displacer/compressor引用本文复制引用
吴彦康,陈曦,郑朴,周振东,叶天,张华..百瓦级高效推移活塞型脉管制冷机实验研究[J].制冷学报,2025,46(2):67-73,7.基金项目
国家自然科学基金(52376012)资助项目.(The project was supported by the National Natural Science Foundation of China(No.52376012).) 本文受上海市中央引导地方科技发展资金(YDZX20213-100003002)项目资助.(The project was supported by the Cen-tral Guidance on Local Science and Technology Development Fund(No.YDZX20213100003002).) （52376012）
