Performance analysis of R1234yf/ionic liquid working fluids for single-effect and compression-assisted absorption refrigeration systems

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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  • Yanjun Sun
  • Gaolei Di
  • Jian Wang
  • Xiaopo Wang
  • Wei Wu

Related Research Unit(s)


Original languageEnglish
Pages (from-to)25-36
Journal / PublicationInternational Journal of Refrigeration
Online published16 Oct 2019
Publication statusPublished - Jan 2020


Due to the disadvantages of conventional working pairs (NH3/H2O and H2O/LiBr) in the absorption-refrigeration cycles, 2,3,3,3-Tetrafluoroprop-1-ene(R1234yf)/ionic liquid (IL), which possessed of remarkable properties, has received more and more attention. In this work, the thermodynamic performance of single-effect and compression-assisted absorption refrigeration cycles were analyzed using R1234yf as refrigerant and ILs (including [emim][BF4], [hmim][BF4], [omim][BF4], [hmim][Tf2N], [hmim][PF6] and [hmim][TfO]) as absorbent, the thermodynamic properties of working pairs was estimated by the NRTL model. The effects of generation, evaporation, condensation and absorption temperature as well as compression ratio on the cooling performance and circulation ratio were studied in various working conditions. Compared to the single-effect cycle, the compression-assisted cycle effectively improves the cooling performance, reduces the circulation ratio and extends the operation range of generation, evaporation and absorption temperatures. At the same working condition, [hmim][Tf2N] performs the best while [emim][BF4] has the lowest COP, the cooling performance of [hmim][BF4], [omim][BF4], [hmim][TfO] and [hmim][PF6] is similar.

Research Area(s)

  • Absorption refrigeration, Compression-assisted cycle, Hydrofluoroolefins, Ionic liquid, Single-effect cycle

Citation Format(s)