Influence of the Passive Flow Initial Parameters on the Efficiency of Liquid-Vapor Ejectors

摘要

The article deals with the issue of creating a vacuum in various industries and equipment using two-phase jet devices, namely liquid-vapor ejectors working on principle of stream thermal compression. The principle of stream thermal compression implies boiling of the working fluid in the expanding part of the active flow nozzle. The influence of the initial parameters of the passive flow on the efficiency of the mixing process is based on extensive literature analysis of the works of modern domestic and foreign authors. The character of the influence of temperature, relative humidity and the content of the passive flow at the entrance to the receiving chamber on the geometric and regime parameters of the mixing chamber is established. The results of numerical and experimental investigations of the influence of the passive flow initial parameters on the efficiency of liquid-vapor ejectors are presented. Exergetic analysis of the efficiency of these devices with various passive flow environments is performed.