Influence of R290/CO2 blended media on the performance of an ejector in an ejector refrigeration system
TIAN Guoji
ZHANG Xinyu
ZENG Shuang
ZHENG Huifan
ZHAO Menghao
WANG Jiabin
TIAN Yibo
Abstract：To address the low efficiency and narrow operation range of the traditional single-component solar injection refrigeration system,this paper takes the optimization of the performance of the injector in the solar injection refrigeration system as the target,completes the calculation of the structural parameters of the injector through the principle of gas dynamics and EES software,constructs a three-dimensional numerical model of the mixed refrigerant of R290/CO2,and analyzes the mass fraction of R290 on the performance of the injector.The influence of R290 mass fraction on the performance of the injector was analyzed.The results show that when the mass fraction of R290 is reduced from 1.0 to 0.7,the injection coefficient is increased from 0.255 to 0.303,which is 19％higher than that of the single R290 system;the mixed R290/CO2 workpiece can improve the working performance of the injector effectively,which provides theoretical references for the optimization of workpiece ratios of solar energy refrigeration injection system.
Keywords：solar refrigerationejectorblended refrigerantratio
Publication Date：2025-04-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 55-59 )