Vapour–liquid equilibrium measurements and correlation for the pentafluoroethane (R125) + n-butane (R600) system |
| |
| Institution: | 1. University of Shanghai for Science and Technology, Shanghai 200093, China;2. Chinese Academy of Science, Shanghai Institute of Technical Physics, Shanghai 200083, China;3. School of Chemistry and Chemical Engineering, Queens University Belfast, Northern Ireland, United Kingdom;1. DIISM, Università Politecnica delle Marche, via Brecce Bianche 12, 60131 Ancona, Italy;1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong Univ, 800 Dongchuan Rd, 200240 Shanghai, China;2. Mines ParisTech, PSL University, CTP – Centre of Thermodynamics of Processes 35, rue Saint Honoré, 77305 Fontainebleau, Cedex France |
| |
| Abstract: | Mixtures formed by hydrocarbons (HC) and hydrofluorocarbons (HFC) are considered promising possible substitutes for the chlorinated refrigerants and for HFC with high global warming potential (GWP). Following our studies on this kind of systems, vapour–liquid equilibria (VLE) experimental data for the R125 + R600 system were measured at temperatures 278.15 and 298.15 K by means of a static analytical method, with preliminary recirculation of the mixture to get a faster equilibrium. The composition of both phases in equilibrium was measured by a gas-chromatographic method. In the experimental temperature range, the system shows a strong positive deviation from the Raoult's law, even if it does not present an azeotropic composition. The VLE data were correlated by different equations of state involving various mixing rules, enabling a comparable analysis of their correlating ability of strongly non-ideal systems. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
