Experimental investigation on vapor liquid equilibrium and azeotropic behavior for the 1,1,1,2-tetrafluoroethane (R134a) + propane (R290) system at temperatures from 253.15 to 303.15 K
| Autor: | Zilong Wang, Hua Zhang, Yanbin Qin, Chunfei Wu, Nanxi Li, Baolin Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Vapor pressure Mechanical Engineering Vapor phase Thermodynamics 02 engineering and technology Building and Construction 010402 general chemistry Mole fraction 01 natural sciences 1 1 1 2-Tetrafluoroethane 0104 chemical sciences Absolute deviation Point data chemistry.chemical_compound 020401 chemical engineering chemistry Propane Vapor–liquid equilibrium 0204 chemical engineering |
| Zdroj: | International Journal of Refrigeration. 120:209-220 |
| ISSN: | 0140-7007 |
| DOI: | 10.1016/j.ijrefrig.2020.09.004 |
| Popis: | This study reports a set of new vapor liquid equilibrium (VLE) data for the binary mixture of 1,1,1,2-tetrafluoroethane (R134a) + propane (R290) at temperatures from 253.15 to 303.15 K, and the saturated vapor pressures of R290 and R134a at temperatures ranging from 253.15 to 323.15 K using a recirculation apparatus with view windows. The VLE data were correlated with the well-known NRTL-RK, Wilson-RK, and UNIQ-RK models. The results indicated that all the models showed good agreement with the experimental data. The average absolute relative deviations of pressure (AARDp) were between 0.01% and 0.02%, while the average absolute deviations of vapor phase mole fraction (AADy) were between 0.0035 and 0.0041. Positive azeotropic behavior could be observed for the R134a + R290 system, and the azeotropic point data at six temperatures from 253.15 to 303.15 K were presented. |
| Databáze: | OpenAIRE |
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