Prediction of surface tension of binary mixtures with the parachor method

0436014 - ÚT 2016 CZ eng C - Conference Paper (international conference)
Němec, Tomáš
Prediction of surface tension of binary mixtures with the parachor method.
EFM14 - EXPERIMENTAL FLUID MECHANICS 2014. Les Ulis Cedex: E D P SCIENCES, 2015 - (Dančová, P.; Vít, T.), s. 383-388. EPJ Web of Conferences. ISSN 2100-014X.
[Experimental Fluid Mechanics 2014. Český Krumlov (CZ), 18.11.2014-21.11.2014]
R&D Projects: GA ČR GAP101/10/1819; GA ČR GA13-23550S
Institutional support: RVO:61388998
Keywords : surface tension * refrigerants * carbon dioxide
Subject RIV: BJ - Thermodynamics

The parachor method for the estimation of the surface tension of binary mixtures is modified by considering temperature-dependent values of the parachor parameters. The temperature dependence is calcu- lated by a least-squares fit of pure-solvent surface tension data to the binary parachor equation utilizing the Peng-Robinson equation of state for the calculation of equilibrium densities. A very good agreement between experimental binary surface tension data and the predictions of the modified parachor method are found for the case of the mixtures of carbon dioxide and butane, benzene, and cyclohexane, respectively. The surface tension is also predicted for three refrigerant mixtures, i.e. propane, isobutane, and chlorodifluoromethane, with carbon dioxide.
Permanent Link: http://hdl.handle.net/11104/0242219