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Some thermodynamic properties of SF6 on the binodal in the vicinity of the critical point

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Thermophysics and Aeromechanics Aims and scope

Abstract

The presented paper considers a number of problems, with the first of them concerning the analysis of experimental (ρl, ρg, T)-data of SF6 at relative temperatures (1.5·10−8 < τ < 0.3). The second task is to develop combined models (ρl (D, C, τ), ρg (D, C, τ), …) that agree with a number of boundary conditions, including the requirements of the scale theory of critical phenomena. The third task deals with the calculation of (D, C)-parameters included in the combined models; at this stage, a basic array of (ρl, ρg, T)-data is formed. It contains: a) experimental results obtained in the laboratory of Prof. Funke (Germany) and b) (ρl, ρg, T)-data obtained by recalculating some values in the laboratory of Prof. Garrabos (France). The models ρl (D, C, τ) and ρg (D, C, τ) serve as the basis for computing some thermodynamic functions of SF6 in the critical region; among them there are complexes, which consist of several properties (the average diameter of a binodal, the order parameter etc.).

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Authors and Affiliations

  1. Scientific Research University “MEI”, Moscow, Russia

    E. E. Ustyuzhanin & V. F. Ochkov

  2. ITMO University, Saint Petersburg, Russia

    V. A. Rykov, S. V. Rykov & I. V. Kudryavtseva

  3. Military Institute (Engineering and Technical) of Military Academy of Logistical Support named after A.V. Khrulev, St. Petersburg, Russia

    S. V. Rykov

Authors
  1. E. E. Ustyuzhanin
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  2. V. F. Ochkov
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  3. V. A. Rykov
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  4. S. V. Rykov
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  5. I. V. Kudryavtseva
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Correspondence to E. E. Ustyuzhanin.

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Ustyuzhanin, E.E., Ochkov, V.F., Rykov, V.A. et al. Some thermodynamic properties of SF6 on the binodal in the vicinity of the critical point. Thermophys. Aeromech. 30, 557–573 (2023). https://doi.org/10.1134/S0869864323030149

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  • DOI: https://doi.org/10.1134/S0869864323030149

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