A perturbed hard-sphere chain equation of state: prediction from boiling point constants

A perturbed hard sphere chain equation of state for refrigerants

“…6 shows the variation of r with the chain length for different refrigerants in this work. As it is visible and is expressed in our previous work [1], there is not such correlation between r and the number of segments. The parameter remains approximately constant and just fluctuate about 1.00.…”

“…This is the equation originally developed by Kim and Bae [7,8] and corrected by Eslami [10] and modified by Maftoon-Azad and Mohamadi-Baghmolayi [1]. To run this equation, a knowledge of the density at boiling point temperature and just one adjusting parameter, r (which is determined by fitting to a few experimental data) is sufficient.…”

“…[12] and this work. Furthermore, these two latter equations [1,11] are simpler in use in comparison to the original PHSC [2][3][4], the modified KB (Kim-Bae) PHSC and FBP equation, since a and b are obtainable by some characteristic constants of the substance and no fitting is needed to determine ε/k and σ 3 .…”

“…Hence, these two characteristic properties, T nb and ρ nb , can be used as appropriate scaling factors. In our previous work [1], we focused on this fact and correlated ε and σ 3 of many liquids to T nb (normal boiling point temperature) and ρ nb (the density at normal boiling point), respectively.…”

“…In a previous work [1], we developed a modified perturbed hardsphere-chain equation of state to predict the PVT properties of fluids.…”