Correlation and prediction of the transport properties of refrigerants using two modified rough hard-sphere models
作者： A. S. Teja , R. L. Smith, Jr. , R. K. King , T. F. Sun
关键词: Saturation (chemistry) 、 Thermal 、 Thermodynamics 、 Surface finish 、 Thermal conductivity 、 Mathematical model 、 Viscosity 、 Refrigerant 、 Hard spheres 、 Materials science
摘要: Two methods are presented for the correlation and prediction of viscosities thermal conductivities refrigerants R11, R12, R22, R32, R124, R125, R134a, R141b, R152 their mixtures. The first (termed RHS1) is a modified rough-hard-sphere method based on smooth hard-sphere correlations Assael et al. requires two or three parameters characterizing each refrigerant but able to correlate transport properties over wide ranges pressure temperature. second (RHS2) also method, an effective diameter Lennard–Jones (LJ) fluids. LJ required in this determined from knowledge density–temperature behavior fluid at saturation. Comparisons with co-workers (RHS3) shown. We show that RHS2 can be used as well predict refrigerants.
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