Investigation of an experimental ejector refrigeration machine operating with refrigerant R245fa at design and off-design working conditions. Part 1. Theoretical analysis

K.O. Shestopalov, B.J. Huang, V.O. Petrenko, O.S. Volovyk

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

© 2015 Elsevier Ltd and IIR.All rights reserved. The ejector refrigeration machine (ERM) offers several advantages over other heat-driven refrigeration machine, including simplicity in design and operation, high reliability and low installation cost, which enable its wide application in the production of cooling. In this paper the theoretical analysis of ejector design and ejector refrigeration cycle performance is presented. It is shown that ERM performance characteristics depend strongly on the operating conditions, the efficiency of the ejector used, and the thermodynamic properties of the refrigerant used. A 1-D model for the prediction of the entrainment ratio ω, and an optimal design for ejectors with cylindrical and conical-cylindrical mixing chambers are presented in this paper. In order to increase ERM performance values, it is necessary first of all to improve the performance of the ejector.
Original languageEnglish (US)
Pages (from-to)201-211
Number of pages11
JournalInternational Journal of Refrigeration
Volume55
DOIs
StatePublished - Jul 2015
Externally publishedYes

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