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Experimental investigation on the viscosity of [Hmim][Tf2N] saturated with R1234ze(E) or R1234yf

Author(s) : ZHANG Y., JIA X., WANG X.

Type of article: IJR article


The working pairs of refrigerant/ionic liquids have been proposed and considered as good candidates to substitute the traditional H2O/LiBr and NH3/H2O in the absorption refrigeration cycle. The viscosities of refrigerant/ionic liquid mixtures have greatly influence on the heat transfer and the flow behavior of the fluids and the performance of the absorption refrigeration system. In this work, the liquid viscosity of the mixtures of 1-hexyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)amide ([Hmim][Tf2N]) saturated with trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) were reported at the temperatures from 283.15 K to 343.15 K and pressures up to 1.4 MPa. The viscosity was measured based on the dual-capillary method, and the experimental system was developed in our laboratory. Results showed that the viscosities of the mixtures decrease sharply with increasing the mole fraction of refrigerant. The viscosity data obtained in this work were correlated using the modified Setchenow-type equation, Eyring-MTSM model, Eyring-NRTL model, and improved Eyring-NRTL model, and the calculated results of the models were compared.

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Pages: 338-345


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  • Original title: Experimental investigation on the viscosity of [Hmim][Tf2N] saturated with R1234ze(E) or R1234yf
  • Record ID : 30027534
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 117
  • Publication date: 2020/09
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.04.018
  • Available in the IIR library


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