无油压缩机驱动的混合工质节流制冷机工质浓度变化特征的实验研究  

Experiment Study on Compositions Shift in a Multicomponent Mixed-Refrigerant Joule-Thomson Cryocooler Driven by an Oil-free Compressor

作　　者：邓昭彬[1] 公茂琼[1] 吴剑峰[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《制冷学报》2006年第6期5-9,共5页Journal of Refrigeration

基　　金：国家自然科学基金资助项目(50206024)

摘　　要：建立了一套由无油压缩机驱动的多元非共沸混合工质节流制冷机系统,用以实验研究其中多元混合工质组分浓度变化特征。针对一种典型混合工质进行多次系统的测量,实验结果得出了不同气量时制冷系统内混合工质组分浓度的变化和分布情况,以及组分浓度随制冷温度的变化特征等一般性规律,将为进一步研究多元混合工质J—T节流制冷机的动态工作特性和优化设计提供重要的依据。An experimental system driven by an oil- free compressor was developed to investigate the dynamic characteristics of the mixture composition variations in the closed throttling refrigeration cycle. A typical mixed - refrigerant was used to measure its composition shift. The experimental results show the variation of mixture composition and distribution characteristics at different quantity of mixture charged in a cryocooler system. The mixture composition variations at different temperatures were also measured. The mixture composition shift features were finally obtained.

关 键 词：工程热物理 节流制冷 实验研究 浓度变化 非共沸混合物 无油压缩机 

分 类 号：TB651[一般工业技术—制冷工程]