A fundamental equation of state for cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z))

Ryo Akasaka, Yukihiro Higashi, Akio Miyara, Shigeru Koyama

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.

    Original languageEnglish
    Pages (from-to)168-176
    Number of pages9
    JournalInternational Journal of Refrigeration
    Volume44
    DOIs
    Publication statusPublished - Jan 1 2014

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    Equations of state
    Vapors
    Vapor pressure
    Acoustic waves
    Density of liquids
    Density of gases
    Extrapolation
    Thermodynamic properties
    Derivatives
    Temperature
    Liquids

    All Science Journal Classification (ASJC) codes

    • Building and Construction
    • Mechanical Engineering

    Cite this

    A fundamental equation of state for cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)). / Akasaka, Ryo; Higashi, Yukihiro; Miyara, Akio; Koyama, Shigeru.

    In: International Journal of Refrigeration, Vol. 44, 01.01.2014, p. 168-176.

    Research output: Contribution to journalArticle

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    AU - Koyama, Shigeru

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