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Vapor-Liquid Equilibria of Carbon Dioxide and Propane Mixtures  

Kim, Ju-Hyok (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Min-Soo (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Man-Hoe (Department of Mechanical Engineering, KAIST)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.11, 2006 , pp. 859-866 More about this Journal
Abstract
This paper presents the vapor-liquid equilibrium (VLE) data measured for carbon dioxide and propane mixtures. Their mixtures were considered as promising alternative refrigerants due to good thermophysical properties and negligible environmental impact. The isothermal VLE data were measured at eight temperatures ranging from 253.15 to 323.15 K in the circulation type equipment with a view cell. The binary system was found to be a zeotropic mixture in the tested temperature range and could be correlated with sufficient accuracy by using the Peng-Robinson equation of state (PR EoS) with the van der Waals one fluid mixing rule. A comparison with published experimental VLE data has been carried out by means of the PR equation of state. In addition, the phase behaviors of carbon dioxide and propane mixtures were analyzed based on the measured VLE data.
Keywords
Vapor-liquid equilibria; Alternative refrigerant; Carbon dioxide; Propane; Peng-Robinson equation of state; Concentration shift;
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