Abstract
In this work, the phase behavior of several binary systems, each containing an IL and a refrigerant, was determined using the quasi-chemical PC-SAFT equation of state (QC-PC-SAFT EoS). A total of 578 bubble and dew point data of a number of IL + refrigerant binary systems were used for modeling. For the comparison of the QC-PC-SAFT with other models, the PC-SAFT EoS and the Peng-Robinson EoS with the Wong-Sandler mixing rules using the NRTL activity coefficient model (PR + WS) were used to study the phase behavior of the same systems. It was observed that the QC-PC-SAFT gives the best results, with an average absolute relative deviation (AARD%) of 3.11%, in comparison with the PC-SAFT and the PR + WS models with AARD% values of 6.28% and 6.01%, respectively.
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