Correlation and prediction of the transport properties of refrigerants using two modified rough hard-sphere models

A. S. Teja, R. L. Smith, R. K. King, T. F. Sun

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

Two methods are presented for the correlation and prediction of the viscosities and thermal conductivities of refrigerants R11, R12, R22, R32, R124, R125, R134a, R141b, and R152 and their mixtures. The first (termed RHS1) is a modified rough-hard-sphere method based on the smooth hard-sphere correlations of Assael et al. The method requires two or three parameters for characterizing each refrigerant but is able to correlate transport properties over wide ranges of pressure and temperature. The second method (RHS2) is also a modified rough-hard-sphere method, but based on an effective hard-sphere diameter for Lennard-Jones (LJ) fluids. The LJ parameters and the effective hard-sphere diameter required in this method are determined from a knowledge of the density-temperature behavior of the fluid at saturation. Comparisons with the rough-hard-sphere method of Assael and co-workers (RHS3) are shown. We also show that the RHS2 method can be used to correlate as well as predict the transport properties of refrigerants.

Original languageEnglish
Pages (from-to)149-161
Number of pages13
JournalInternational Journal of Thermophysics
Volume20
Issue number1
DOIs
Publication statusPublished - 1999 Jan 1
EventProceedings of 1997 13th Symposium on Thermophysical Properties - Boulder, CO, USA
Duration: 1997 Jun 221997 Jun 27

ASJC Scopus subject areas

  • Condensed Matter Physics

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