Design and experimental study of a steam ejector refrigeration system

More and more attention has been paid to ejector refrigeration system using low grade thermal for cooling. Ejector is the most important part of this system, its operating condition structure are two parameters affecting performance, especially NXP value a hot research topic at present. The optimal was found by many experimental or numerical studies, but theory about how design an optimum nozzle position rare. In order verify whether calculated with free beam suitable designed thermodynamic method, steam facility were investigation model real fluid properties. values compared theoretical exit studied in experiment, then effect on critical performance researched NXP. results indicate that acquired COP 0.17 Tg=70℃, Te=15℃and Tc=28℃, entrainment ratio matched satisfactorily well, so did back pressure. cooling under superior those ±10mm change.