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Vapor–liquid equilibria and inter-diffusion coefficients for working pairs for absorption refrigeration systems composed of [HMIM][BF 4 ] and fluorinated propanes.

Author(s) : LIU X., NGUYEN M. Q., XUE S., et al.

Type of article: Article, IJR article

Summary

Hydrofluorocarbon + Ionic liquid is a promising working pair for the absorption refrigeration system. The vapor–liquid equilibrium and inter-diffusion coefficient of hydrofluorocarbon + ionic liquid are two key parameters used to evaluate the performance of the working pair. In this work, the vapor–liquid equi- librium and inter-diffusion coefficients of 1-hexyl-3-methylimidazolium tetrafluoroborate and fluorinated propanes including R227ea, R236fa and R245fa were measured from 303 K to 343 K and up to 332 kPa. The mole fractions of the three fluorinated propanes in liquid phase at vapor–liquid equilibrium were found to increase in the order: R227ea < R236fa < R245fa; they also increased with decreasing temperature and increasing pressure, while the inter-diffusion coefficients were found to increase with increasing temperature. The non-random two-liquid (NRTL) model was used to correlate vapor–liquid equilibrium data, while the Arrhenius, Litovitz, and Vogel -Fulcher -Tammann equations were used to correlate the inter-diffusion coefficient data.

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Pages: 34-41

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Details

  • Original title: Vapor–liquid equilibria and inter-diffusion coefficients for working pairs for absorption refrigeration systems composed of [HMIM][BF 4 ] and fluorinated propanes.
  • Record ID : 30026561
  • Languages: English
  • Subject: HFCs alternatives
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Publication date: 2019/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.04.023

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