Original title: Prediction of surface tension of binary mixtures with the parachor method
Authors: Němec, Tomáš
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Year: 2015
Language: eng
Abstract: 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.
Keywords: carbon dioxide; refrigerants; surface tension
Project no.: GAP101/10/1819 (CEP), GA13-23550S (CEP)
Funding provider: GA ČR, GA ČR
Host item entry: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0242219

Permalink: http://www.nusl.cz/ntk/nusl-180383


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