Viscosity and thermal conductivity of methane, ethane and propane halogenated refrigerants

Viscosity of Saturated Liquid Dimethyl Ether from (227 to 343) K

“…The viscosities of HFC152a are listed in Table . The dynamic viscosity and density data were cited from refs and . To check the feasibility of the assumption k = 1.0, both results ( k = 1.0 and ( ρ L − ρ g )/ρ L ) were given.…”

Prediction of the Thermal Conductivity for Liquid Hydrocarbons and Halogenated Hydrocarbons

“…The theoretical or semitheoretical models for thermal conductivity can be traced back to the earliest hard-sphere model, which can predict the thermal conductivity of dilute gas. Many correlation models that can predict the thermal conductivity under other temperature and pressure conditions beyond the experimental data have also recently been developed related to hard-sphere models such as the ECS model, , the hard-sphere model applicable to dense fluids, − the residual entropy scaling (RES) model, , etc. The accuracy of the correlation model is generally higher than that of the prediction model.…”

“…However, the high-accuracy results of correlation models are based on adequate high-precision experimental data. Unfortunately, the experimental data on alkanes, alkenes, and halogenated hydrocarbons are insufficient . In the absence of experimental data, the thermal conductivity can be calculated by the prediction models.…”