新型液氦温区热声驱动制冷系统研究  

Study on a New Thermoacoustically-driven Refrigerator in Liquid Helium Temperature Ranges

作　　者：迟佳欣 徐静远 陈六彪[1] 周远[1] 罗二仓[1,2] CHI Jiaxin;XU Jingyuan;CHEN Liubiao;ZHOU Yuan;LUO Ercang(CAS Key Laboratory of Cryogenic,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy Sciences,Beijing 100049,China;Department of Chemical Engineering,Imperial College London,London SW72AZ,United Kingdom)

机构地区：[1]中国科学院理化技术研究所低温工程学重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]帝国理工学院化学工程系,伦敦SW72AZ

出　　处：《工程热物理学报》2023年第4期886-893,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51906250)。

摘　　要：提出一种采用气液耦合谐振子的新型热声驱动制冷系统,理论上首次实现液氦温区制冷。模拟结果显示,系统最低无负荷制冷温度达到5.9 K,为目前热声制冷系统的最低记录。本文首先基于数值模拟优化了新型热声制冷系统结构参数;然后,分别揭示了系统内部关键参数的沿程分布以及热力学性能的影响规律。本研究填补了热声制冷技术应用于液氦温区的空白,有望为航天、低温电子器件及氢能源利用等领域中的新型热驱动制冷机奠定理论基础。A new type of thermoacoustic-driven refrigeration with Gas-liquid coupled resonator is proposed,which theoretically realizes refrigeration in liquid-helium temperature range for the first time.The simulation results show that the minimum no-load cooling temperature of the system reaches 5.9 K.It is the lowest record of the current thermoacoustic refrigeration.First of all,this paper optimizes the structural parameters of the new thermoacoustic refrigeration based on numerical simulation.Then,the distribution of key parameters and the infuence of thermodynamic properties are respectively revealed.This research flls the gap in the application of thermoacoustic refrigeration technology to the liquid-helium temperature range.It is expected to lay a theoretical foundation for new heat-driven refrigerators in the felds of aerospace,low-temperature electronic devices,and hydrogen energy utilization.

关 键 词：热声 热声发动机 热声制冷 液氦温区 气液耦合 

分 类 号：TK123[动力工程及工程热物理—工程热物理]