华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：143-148,6.DOI:10.13245/j.hust.240077
高效双压氦液化循环研究
Research on efficient double-pressure helium liquefaction cycle
摘要
Abstract
To realize the high-efficiency of helium liquefaction system,a new double-pressure helium liquefaction cycle was proposed to explore the law of main performance parameters such as process thermodynamic parameters,component efficiency,system liquefaction rate and exergy efficiency with medium pressure under the same high pressure.Results show that when the medium pressure is changed,the liquefaction rate increases with the increase of medium pressure,while the exergy efficiency decreases.When the medium pressure is 7.0×105 Pa,the liquefaction capacity is 90.46 L/h,and the liquefaction efficiency reaches the maximum value of 18.6%.When the medium pressure is 12.5×105 Pa,the liquefaction capacity and exergy efficiency are 107.4 L/h and 17.5%,respectively.Compared with the Modified-Claude cycle,the double-pressure cycle reduces the exergy destruction of the throttle valve and reduces the power consumption of the system,improving the overall exergy efficiency of the system.关键词
氦液化器/液化循环/液化率/效率/㶲分析Key words
helium liquifier/liquefaction cycle/liquefaction rate/efficiency/exergy analysis分类
通用工业技术引用本文复制引用
苏惠坤,李正宇,龚领会,张梅梅..高效双压氦液化循环研究[J].华中科技大学学报（自然科学版）,2024,52(4):143-148,6.基金项目
中国科学院战略性先导科技专项资助项目(XDC10010000). （XDC10010000）
