Thermal conductivity measurements and correlations of pure R1243zf and binary mixtures of R32 + R1243zf and R32 + R1234yf

Thermal conductivity measurements of pure R1243zf and binary mixtures R32 + R1234yf were conducted in the homogeneous liquid vapour phases with a transient hot-wire technique. The mole fractions are 0.25, 0.50, 0.75 both systems. temperature range was from (264.1 to 405.6) K pressures ranging between (0.9 6.1) MPa. apparatus validated CO2 regions. relative combined expanded uncertainty (k = 2) experimental thermal approximately 2.0 %. deviations measured conductivities those calculated using extended corresponding states (ECS) model as implemented software REFPROP 10 (−13 10) % phase, (−14 1) phase. Additionally, performance new approach predicting fluid transport properties, residual entropy scaling incorporating cubic-plus-association equation state (RES-CPA model) tested for these by first determining parameter R1243zf. RES-CPA then able predict mixture generally within %, which is similar ECS model; however no additional parameters introduced describe interactions.