Thermodynamic Analysis of a Mixed Refrigerant Ejector Refrigeration Cycle Operating with Two Vapor-liquid Separators

作     者：TAN Yingying CHEN Youming WANG Lin 

作者机构：School of Civil Engineering Hunan University Institute of Refrigeration and Air-Conditioning Henan University of Science and Technology 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2018年第27卷第3期

页      面：230-240页

核心收录：

学科分类：080705[工学-制冷及低温工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：financially supported by the National Natural Science Foundation of China(NSFC)(Grant No.51706061&50706060) 

主　　题：Ejector Refrigeration Zeotropic Refrigerant Vapor-liquid Separator Refrigeration Temperature 

摘      要：A mixed refrigerant ejector refrigeration cycle operating with two-stage vapor-liquid separators （MRERC2） is proposed to obtain refrigeration temperature at -40℃. The thermodynamic investigations on per- formance of MRERC2 using zeotropic mixture refrigerant R23/R134a are performed, and the comparisons of cycle performance between MRERC2 and MRERC1 CMRERC with one-stage vapor-liquid separator） are conducted. The results show that MRERC2 can achieve refrigeration temperature varying between -23.9℃ and -42.0℃ when ejector pressure ratio ranges from 1.6 to 2.3 at the generation temperature of 57.3-84.9℃. The parametric analysis indicates that increasing condensing temperature decreases coefficient of performance （COP） of MRERC2, and increasing ejector pressure ratio and mass fraction of the low boiling point component in the mixed refrigerant can improve COP of MRERC2. The MRERC2 shows its potential in utilizing low grade thermal energy as driving power to obtain low refrigeration temperature for the ejector refrigeration cycle.