液氮辅助制冷的高低温冲击实验箱系统研究  

Research on High and Low Temperature Impact Test Chamber System for Liquid Nitrogen Assisted Refrigeration

作　　者：朱红涛 吴静怡[1] 黄一也 蔡爱峰 ZHU Hongtao;WU Jingyi;HUANG Yiye;CAI Aifeng(Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《制冷技术》2022年第3期7-12,27,共7页Chinese Journal of Refrigeration Technology

摘　　要：为了满足高低温冲击实验系统对温度冲击实验的要求,本文基于复叠式制冷系统进行高低温冲击实验,并分析实验结果,得出单一使用压缩式制冷无法满足实验要求。提出了增加一路液氮冷源以获得更大的制冷能力,并建立系统的相关参数模型。基于所建立的模型进行了相关的模拟与实验,实验与仿真结果表明:增添液氮辅助降温系统能够强化低温箱系统的制冷能力,实现了实验条件的恢复时间由最初的19 min缩减到5 min以内,并且温度的上升幅度由20℃降至8℃,满足了低温冲击实验的要求。In order to meet the requirements of high and low temperature impact test system for temperature impact test,the high and low temperature impact experiments are conducted based on cascade refrigeration systems in this paper,and the experimental results are analyzed.It is concluded that the use of compression refrigeration alone cannot meet the experimental requirements.It is proposed to add a liquid nitrogen cooling source to obtain greater cooling capacity,and establish the relevant parameter model of the system.Based on the established model,relevant simulations and experiments are performed.The experimental and simulation results show that the addition of the liquid nitrogen-assisted cooling system can strengthen the refrigeration capacity of the cryogenic box system,and the recovery time of the experimental conditions is reduced from the initial 19 minutes to less than 5 minutes,and the increase in temperature is reduced from 20℃to 8℃,which satisfies the requirements of low-temperature impact experiments.

关 键 词：压缩式制冷 液氮制冷 冲击实验 高低温 

分 类 号：TB611[一般工业技术—制冷工程]