Review and analysis of the effect of ejector geometry on the performance of two-phase CO2 ejectors

Neal Lawrence, Stefan Elbel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The use of two-phase ejectors with CO2as the working fluid has received significant attention in recent years due to the fluid's large potential for expansion work recovery. These two-phase ejector studies commonly focus on the performance of the ejector cycle, but less attention is generally given to the performance of the ejector itself. The geometry of the ejector has been found to have a significant impact on the performance of the ejector and the ejector cycle. This paper summarizes available literature on CO2 ejector geometries that have been found to offer favorable ejector performance and draws conclusions about what relations between various dimensions may lead to more favorable ejector performance. In order to gain further insight into how fluid properties affect the optimum geometry of an ejector, comparison is also made between the geometry of CO2 ejectors and the geometry of ejectorsdesigned to work with other refrigerants.

Original languageEnglish (US)
Title of host publication11th IIR Gustav Lorentzen Conference on Natural Refrigerants
Subtitle of host publicationNatural Refrigerants and Environmental Protection, GL 2014
EditorsWangyang Hu, Guojun Zhao
PublisherInternational Institute of Refrigeration
Pages775-782
Number of pages8
ISBN (Electronic)9782362150043
StatePublished - Jan 1 2014
Event11th IIR Gustav Lorentzen Conference on Natural Refrigerants, GL 2014 - Hangzhou, China
Duration: Aug 31 2014Sep 2 2014

Publication series

Name11th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerants and Environmental Protection, GL 2014

Other

Other11th IIR Gustav Lorentzen Conference on Natural Refrigerants, GL 2014
CountryChina
CityHangzhou
Period8/31/149/2/14

Keywords

  • Carbon dioxide
  • Ejector performance
  • Two-phase ejector

ASJC Scopus subject areas

  • Environmental Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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