DA-00-10-2 (RP-997) -- A Generalized Model for Viscosity and Thermal Conductivity of Trifluoromethane (R23) PDF

A model for the calculation of the viscosity and thermal conductivity of trifluoromethane (R-23), expressed in terms of temperature and density, is presented. The model is based on Eyring's theory of significant liquid structure. It is applicable to a wide range of thermodynamic conditions including dilute gas, liquid, saturated vapor, saturated liquid, and critical and supercritical regions. The same functional form was used to represent the viscosity and thermal conductivity. The constants for each model were determined by correlating selected experimental data. The model-calculated values for R-23 agree very well with the literature data for viscosity at temperatures from 153 to 570 K (275 to 1026 R) and for thermal conductivity at 170 to 433 K (306 to 779 R) at pressures up to 60 MPa (8700 psia). The estimated accuracy of the correlation is ±1% in viscosity and ±2% in thermal conductivity.

Units: Dual