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Measurements of solubility and kinematic viscosity data of refrigerants-lubricants oil mixtures.

Number: pap. n. 251

Author(s) : BROCUS J., VALTZ A., THEVENEAU P., et al.

Summary

Thermophysical properties of refrigerant-lubricant oil mixtures are of fundamental importance in heat pump systems. In particular, the knowledge of phase diagram of these mixtures as well as kinematic viscosity is very important for the design of the heat pump. Such information can be gathered in data sheets called Daniel plots. In this work, solubility at saturation of two hydrofluoroolefins (HFO) type refrigerants has been measured in a polyolester type lubricant oil, along with density and viscosity measurements of the liquid phase around room temperature. P-T-x measurements were carried out by an isothermal isochoric synthetic method at two temperatures, 333 K and 383 K. Two models are also proposed: a cubic equation of state to correlate solubility data and an Eyring type model for the modeling of the kinematic viscosity. HFOs studied include trans-1-chloro-3,3,3-trifluoroprop-1-ene (R1233zd(E)) and cis-1,1,1,4,4,4hexafluoro-2-butene (R1336mzz(Z)).

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Details

  • Original title: Measurements of solubility and kinematic viscosity data of refrigerants-lubricants oil mixtures.
  • Record ID : 30025973
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0251

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