New Thermodynamic Equation of State for Refrigerant HFO-1243zf

R-1243zf is a new refrigerant that could replace R-134a. Its thermodynamic properties represented in the equation of state (EOS) play an essential role analyzing and designing thermal systems. The EOS exists without including caloric property data due to unavailable during development time. New was developed explicitly Helmholtz free energy optimized represent experimental accurately maintain consistency. optimization process undergoes using genetic algorithm weighted-least squares regression. used have range 233–430 K 0.106–34.6 MPa were validated from extrapolation consistency confirm reliability. average absolute deviation 0.48% for ideal gas isobaric specific heat, 1.7% isochoric 0.33% speed sound, 0.22% liquid density single-phase, 0.49% vapor 0.96% pressure, 2.2% saturated density, 3.2% density. has reasonable behavior triple point up 700 100 MPa.