Viscosity and thermal conductivity of halogenated methane and ethane refrigerants

Viscosity and thermal conductivity of liquid halogenated methane and ethane refrigerants from about 200 K to near the critical temperature, at saturation and also at pressures up to 50 MPa, are shown to be satisfactorily correlated on the basis of a scheme developed by Dymond and Assael from consideration of hard-sphere theory. For the 31 refrigerants considered here, from the 1445 viscosity and 1226 thermal conductivity measurements examined only 5.2% were found to deviate by more than 5% from the proposed scheme. (C) 1999 Elsevier Science Ltd and IIR. All rights reserved.