Experimental investigation of two-phase ejector liquid recirculation cycles with R410A

Neal Lawrence, Stefan Elbel

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

Abstract

Two-phase ejectors have gained attention in recent years due to their ability to directly unload the compressor in vapor-compression cycles. However, ejectors can also improve cycle performance by providing liquid recirculation. In this paper, cycles using the work recovered by an ejector to provide liquid recirculation are investigated experimentally with R410A. The ejector recirculation cycle, in which the ejector is used to recirculate liquid through the evaporator but not directly unload the compressor, and the standard two-phase ejector cycle, in which the ejector can directly unload the compressor and overfeed the evaporator, are compared to each other and to a DX cycle without an ejector. The effect of evaporator geometry and ambient temperature on the performance of the cycles is also investigated. The results show that the ejector recirculation cycle is more favorable at lower ambient temperature, and the COP improvement of both cycles can be influenced by evaporator design.

Original languageEnglish (US)
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages3181-3188
Number of pages8
ISBN (Electronic)9782362150128
DOIs
StatePublished - Jan 1 2015
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: Aug 16 2015Aug 22 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Other

Other24th IIR International Congress of Refrigeration, ICR 2015
CountryJapan
CityYokohama
Period8/16/158/22/15

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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