摘要
混合工质低温制冷系统存在能效比较低,压缩机排气温度及压力较高的问题。为提高低温制冷系统的降温性能,保证其安全可靠运行,通过搭建五元混合工质低温实验台,分析以膨胀储气罐和控制阀联合作用对系统性能的影响。结果表明,该控制方案可提高系统降温速度,优化系统运行组分,同时也可减小压缩机总耗功,控制排气压力及温度在安全范围。
The energy efficiency ratio of ultra-low temperature mixed refrigerant cryogenic system is low.The problems that high compressor exhaust temperature and pressure always exist.For the sake of improving the ultra-low temperature cryogenic performance and ensure its safe and reliable operation,constructing a five-element mixed refrigerant ultralow temperature test bed is essential.The method that combined operation of the expansion tank and the control valve on the performance was analyzed.The results show that the strategy can not only improve the system cooling rate,optimize the system running components,but also reduce the total power consumption of the compressor,control the exhaust pressure and temperature in the safe range.
作者
潘垚池
刘金平
许雄文
李国立
林郁聪
PAN Yao-chi;LIU Jin-ping;XU Xiong-wen;LI Guo-li;lLIN Yu-cong(School of Electric Power,South China University of Technology,Guangzhou 510640,China;School of Electric Power,South China University of Technology,Guangzhou 510640,ChinaState Key Lab of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China)
出处
《真空与低温》
2018年第1期66-70,共5页
Vacuum and Cryogenics
基金
国家自然科学青年基金(51506057)
华南理工大学亚热带建筑科学国家重点实验室开放基金(2015ZC13
2016KA01)
中国科学院低温工程学重点实验室开放基金(CRYO201616)
关键词
非共沸混合工质
优化
控制
性能
non-azeotropic mixed refrigerant
optimization
control
performance
