摘要
大功率脉管制冷机有望满足小型液化天然气装置的各种需求,介绍了一台大功率脉管制冷机的优化及实验结果。模拟结果表明,采用0.03 mm丝径的300目丝网能提高脉管制冷机的制冷效率,在进行了两种回热器丝网规格的对比实验之后,验证了模拟结果,通过对制冷机冷端均流器进行改进,大大提高了脉管制冷机的性能。实验结果表明,在输入功为5501 W时,于119.7 K下获得了500 W的制冷量,其比卡诺效率为13.7%。
Pulse tube refrigerator has the advantages of wide refrigeration temperature range,low vibration,low noise,no pollution of refrigerant and wide refrigeration temperature range.High-capacity pulse tube refrigerator is expected to meet the needs of natural gas mini-liquefier applications.This paper mainly introduces the simulation and experimental results of a high-capacity pulse tube refrigerator.The simulation results show that the efficiency of the pulse tube refrigerator can be improved by using 300 mesh stainless-steel screen with 0.03 mm wire diameter in regenerator,which is confirmed by experiments.Finally,the efficiency is effectively improved after changing the distributor at the cold end.The experimental results show that the cooling power of 500 W is obtained at 119.7 K with the input power of 5501 W,and the carnot efficiency is 13.7%.
作者
郭兆瑞
朱绍伟
Guo Zhaorui;Zhu Shaowei(Institute of Refrigeration and Cryogenics,School of Mechanical Engineering,Tongji University,Shanghai 201804,China;Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems,Tongji University,Shanghai 201804,China)
出处
《低温工程》
CAS
CSCD
北大核心
2020年第1期8-12,29,共6页
Cryogenics
基金
国家自然科学基金面上项目(51476117)。
