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Surface tension of propane–methane solution in the temperature range of 318.15–333.15 K
- Authors: Khotienkova M.N.1, Andbaeva V.N.1
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Affiliations:
- The Institute of Thermal Physics of the Ural Branch of the Russian Academy of Sciences
- Issue: Vol 88, No 9 (2024)
- Pages: 1345–1351
- Section: Condensed Matter Physics
- URL: https://journals.rcsi.science/0367-6765/article/view/283352
- DOI: https://doi.org/10.31857/S0367676524090026
- EDN: https://elibrary.ru/OESAKR
- ID: 283352
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Abstract
We presented the results of measuring of the capillary constant of a propane-methane solution along the saturation line in the temperature range of 318.15–333.15 K at pressures from the saturation pressure of pure propane up to 4 MPa. The surface tension of the solution was determined. Equations approximating the concentration and pressure dependences of surface tension are constructed.
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About the authors
M. N. Khotienkova
The Institute of Thermal Physics of the Ural Branch of the Russian Academy of Sciences
Email: andbaeva@mail.ru
Russian Federation, Ekaterinburg
V. N. Andbaeva
The Institute of Thermal Physics of the Ural Branch of the Russian Academy of Sciences
Author for correspondence.
Email: andbaeva@mail.ru
Russian Federation, Ekaterinburg
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Fig. 1. Baric dependence of the capillary constant (a) and concentration dependence of the surface tension (b) of the propane-methane solution according to isotherms. (1 – T = 318.15 K; 2–323.15; 3–328.15; 4–333.15).
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Fig. 2. Deviations of experimental data on the surface tension of the propane-methane solution from those calculated by equation (7) (a) and deviations of experimental data on the surface tension of the propane-methane solution from those calculated by equation (8) (b). (1 – T = 318.15 K; 2 – 323.15; 3 – 328.15; 4 – 333.15.)
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4.
Fig. 3. Critical line of the propane-methane solution: 1 – [15]; 2 – [14]; 3 – [16]; 4 – [4], 5 – [17], dotted line – data calculated using equation (17).
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5.
Fig. 4. Deviation of experimental data on the capillary constant of a propane-methane solution from additive values calculated using equation (16): T = 318.15 K – solid line; 323.15 K – dashed line; 328.15 K – dotted line; 333.15 K – dashed-dotted line.
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