Share

IIR document

Critical properties and vapor-liquid equilibrium of two near-azeotropic mixtures containing HFOs.

Author(s) : YANG Z., VALTZ A., COQUELET C., WU J., LU J.

Type of article: IJR article

Summary

This work studies two binary mixtures of R1243zf + R1234yf and R1243zf + R245cb which can be possibly used as a long-term alternative refrigerant for heat pumps. We present critical property (critical temperature, pressure, density) and vapor liquid equilibrium (VLE) of R1243zf + R1234yf and R1243zf + R245cb two binaries. The maximum extended uncertainties (k=2) are estimated as U(T) = 0.21 K, U(p) = 0.048 MPa, and U(ρ) = 6.4 kg/m3 for critical property measurement, and U(T) = 0.06 K and U(p) = 0.015 MPa for bubble point measurement. The uncertainty of liquid-phase mole fraction is estimated less than 1.8 × 10−4. The critical property is investigated by a novel method that determines the critical point via modeling vapor-liquid coexistence points to the combined equations of the scaling law and rectilinear diameters law. The VLE of R1243zf + R1234yf and R1243zf + R245cb binary mixtures in the range of 293.45 to 353.55 K are studied by the static-synthetic method which determines the bubble point via the variable volume cell technique. The experimental bubble points are correlated by the Peng-Robinson (PR) equation of state (EoS) with vdW and MHV2 mixing rules. The modeling results are in good agreement with the measured data. The high temperature VLE of the two binary systems is predicted up to the critical point line by PR-MC-MHV2 model with the optimal binary parameters.

Available documents

Format PDF

Pages: 133-147

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Critical properties and vapor-liquid equilibrium of two near-azeotropic mixtures containing HFOs.
  • Record ID : 30029618
  • Languages: English
  • Subject: HFCs alternatives
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 138
  • Publication date: 2022/06
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2022.03.027
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (20)
See the source

Indexing