LABORATORY REFRIGERATION UNIT WITH STEAM-JET COMPRESSOR

Abstract

A laboratory refrigeration unit with steam-jet compressor has been developed. It features implementation of steam-jet compressor for chilling of water at positive boiling temperatures. The source of energy for negative refrigeration process is by means of heat input. The unit could be used for measuring and consequent analysis of energy transformation values of present method for different temperatures of heat source, cooling media and environment. The construction allows exploring of these for different traditional and novel single-compound refrigerants due to its changeable ejector and expansion valve.The unit is a step before its industrial application.

Keywords

• Ejector,refrigeration

References

1. [1] X. Yang, X. Long, X. Yao. Numerical investigation on the mixing process in a steam ejector with different nozzle structures.Int. J. Therm. Sci., 56 (2012), pp. 95-106.
2. [2] F. Li, R. Li, X. Li, Qi Tian. Experimental investigation on a R134a ejector refrigeration system under overall modes. Applied Thermal Engineering.Volume 137, 5 June 2018, Pages 784-791.
3. [3] K.Ameur, Z. Aidoun, M. Ouzzane. Experimental performances of a two-phase R134a ejector. Experimental Thermal and Fluid Science.Volume 97, October 2018, Pages 12-20.
4. [4] G. Besagni, R. Mereu, F. Inzoli. Ejector refrigeration: a comprehensive review. Renew. Sustain. Energy Rev., 53 (2016), pp. 373-407.
5. [5] E.K.Levy, G. A. Brown. Liquid-vapor interactions in a constant-area condensing ejector.J. Basic Eng., 94 (1) (1972), pp. 169-179.
6. [6] K. Sumeru, H. Nasution, F.N. Ani. A review on two-phase ejector as an expansion device in vapor compression refrigeration cycle.Renew. Sustain. Energy Rev., 16 (7) (2012), pp. 4927-4937.\
7. [7] Yan Jia, Cai Wenjian. Area ratio effects to the performance of air-cooled ejector refrigeration cycle with R134a refrigerant. Energy Conversion and Management.Volume 53, Issue 1, January 2012, Pages 240-246.
8. [8] ZhaofengMeng, Hua Zhang, Mingjing Lei, Yanbin Qin, Jinyou Qui. Performance of low GWP R1234yf/R134a mixture as a replacement for R134a in automotive air conditioning systems. International Journal of Heat and Mass Transfer. Volume 116, January 2018, Pages 362-370.