Thermodynamic Properties of R1234yf and DMAC Binary Solution

Abstract

To assess the performance of potential refrigerant-absorbent pairs, it is essential to have thermodynamic properties of both the pure components and their mixtures. Since these mixtures do not behave ideally, the properties of the solutions can only be obtained through experimental means. This paper’s proposed candidate pair is the environmentally friendly refrigerant 2,3,3,3-Tetrafluoropropene (R1234yf) and the organic solvent Dimethylacetamide (DMAC). For this purpose, an experimental setup was designed to obtain data at the equilibrium point between the gas and liquid phases. The collected data was analyzed using models based on the vapor-liquid equilibrium of mixtures. Correlations were established for pressure-temperature and refrigerant concentration in the liquid phase and the solution's enthalpy. These results can facilitate further investigations into the solution’s compatibility as an alternative working pair.

Keywords

• Vapor liquid equilibrium
• binary solutions
• Tetrafluoropropene (R1234yf) and Dymethylacetamide (DMAC)
• Thermodynamic properties

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