Development of the equation of state for HFCO-1224yd(Z): detailed and extensive evaluation of the current equation and outlook for a new equation.

The first fundamental equation of state for HCFO-1224yd(Z) was published in 2017. This equation shows reasonable accuracies in the density and vapor pressure at moderate temperatures and pressures. In addition, this equation is designed to exhibit physically correct behavior in extrapolated regions. At high temperatures and pressures, however, uncertainties in calculated properties would be higher, because at this time available experimental data are limited to restricted ranges. This paper demonstrates comparisons of the current equation to some available experimental data and evaluates behavior of the equation in the extrapolated regions.