Viscosity prediction of pure refrigerants applying the residual entropy scaling theory coupled with a “Generalized Chart” parametrization method for the Statistical Associating Fluid Theory

Multiscale Design of Ionic Liquid Solvents and CO2 Capture Processes for High-Pressure Point Sources

“…For general fluids, component-specific parameters or relations are necessary. Recent studies have extended this theory by proposing different structures of entropy scaling terms (e.g., refs – ). Motivated by these studies, we propose a combined entropy scaling and Vogel–Fulcher–Tammann (VFT) model that represents viscosity as a function of density, molar weight, temperature, and an entropy scaling term, with the addition of the VFT equation term to account for the temperature dependency of viscosity of ILs ln nobreak0em0.25em⁡ μ normalE normalS = A 0 + A 1 .25em ln nobreak0em0.25em⁡ ρ + A 2 .25em ln nobreak0em0.25em⁡ M + A 3 .25em ln nobreak0em0.25em⁡ T + A 4 ( − s ) + A 5 ( − s ) − 1 ln nobreak0em0.25em⁡ μ normalV normalF normalT = A 6 1 false( T − 170 .25em normalK false) ln nobreak0em0.25em⁡ μ = ln nobreak0em0.25em⁡ μ normalE normalS + ln nobreak0em0.25em⁡ μ normalV normalF normalT where ln μ ES is the entropy scaling term, s represents the reduced residual entropy given by S res / N A k , ln μ VFT is the VFT equation term, and the ideal glass transition temperature is set at a fixed value of 170 K. The regression results and the relevant parameter values are presented in Figure S3 and Table S6.…”

Modelling of viscosity equation for liquid-phase HCFO-1233zd(E)

“…Otherwise, the EES model proposed by Fouad and Vega [16] was applied to HFC and HFO. Residual entropy scaling theory coupled with a generalized chart parametrization method proposed by Li et al [17]. They applied the method for HFC, HFO, CO2, dan natural gas.…”