Thermal conductivity of R152a, R142b and R123 refrigerants at low and moderate densities

In this research, we first focused on evaluation of translational contribution of thermal conductivity for refrigerants R152a, R142b and R123 based on collision integral calculations in conjunction with potential parameter series. At the next step, we considered the internal degrees of freedom contribution of thermal conductivity through an accurate adjustment with the available experimental data at dilute density range to present a reliable model for thermal conductivity of dilute R152a, R142b and R123 refrigerants. Finally, we applied the Rainwater-Friend theory to model the second virial thermal conductivity coefficient and then calculate thermal conductivity of moderately dense R152a, R142b and R123 refrigerants

Keywords:

Thermal conductivity , Chapman-Enskog collision integral , Rainwater-Friend theory , Second virial transport coefficients