摘要
随着高工作温度HOT(High Operation Temperature)红外探测器的应用愈加广泛,更多应用场景要求微型斯特林制冷机在70℃以上的高温环境运行,这对制冷机高温适应性提出了挑战。基于研究气动型斯特林制冷机的高温适应性,通过高温环境对阻抗和回热器损失的变化规律进行分析,研究高温环境对充气压力及谐振频率的影响,以及回热器丝网参数与高温适应性的关系,得出高温环境对制冷效率造成性能衰减的影响因素。实验表明:环境温度升高使得气体压力升高,使谐振频率提升。适当减少孔隙率可以减少回热器在高温环境的流阻损失,提高制冷效率。本文的研究对提高斯特林制冷机的热环境适应性具有一定的参考价值。
With the wide application of HOT infrared detectors,many applications require the miniature Stirling cooler to operate in a high temperature environment above 70 C,which challenges the high temperature adaptability of the cooler.Based on the study of high temperature adaptability of pneumatic Stirling refrigerator.Through the analysis of the change law of impedance and regenerator loss at high temperature,the influence of high temperature on inflation pressure and resonant frequency,as well as the relationship between regenerator screen parameters and high temperature adaptability was studied.The results show that the ambient temperature increases,the gas pressure and the resonant frequency increase.Reducing the porosity properly can reduce the flow resistance loss of the regenerator at high temperature and improve the refrigeration efficiency.The research in this paper has a certain reference value for improving the thermal environment adaptability of Stirling cooler.
作者
黄泽华
黄太和
曾勇
孙建
黄立
Huang Zehua;Huang Taihe;Zeng Yong;Sun Jian;Huang Li(Wuhan Guide Infrared Technology Co,Ltd,Wuhan 430205,China)
出处
《低温与超导》
CAS
北大核心
2024年第4期58-63,共6页
Cryogenics and Superconductivity
基金
“十三·五”装备预研领域基金(61404140204)资助。
关键词
斯特林制冷机
高温适应性
损失
实验研究
Stirling cooler
High temperature adaptability
Loss
Experimental research
