Application of jet thermal compression for increasing the efficiency of vacuum systems

15th International Scientific and Engineering Conference Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery HERVICON+PUMPS-2017

机械制造;生态环境科学

Sharapov, S.O.^1 ; Arsenyev, V.M.^1 ; Kozin, V.M.^1

Sumy State University, 2, Rimsky-Korsakov, Sumy

40007, Ukraine^1

关键词: Exergetic efficiency;    Experimental investigations;    Steam jet ejectors;    Steam-air mixture;    Superheated steam;    Thermal compressions;    Thermo dynamic analysis;    Working process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/233/1/012028/pdf
DOI  :  10.1088/1757-899X/233/1/012028

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The article describes the principle of jet thermal compression with reference to vacuum systems. We consider liquid-vapor ejectors, the working process of which is based on this principle, as an alternative to existing steam jet ejectors. The results of a theoretical and experimental investigations of the liquid-vapor ejector of a vacuum unit are presented. With the help of thermodynamic analysis of exergetic efficiency, the range of operation of the liquid-vapor ejector and the vacuum unit on its base is determined, at which its performance is at the maximum level. The efficiency of vacuum creation by such units is estimated by the example of various pumped media, such as saturated, superheated steam and steam-air mixture.