Heat capacities and Joule-Thomson coefficients of HFC refrigerants

A. Yokozeki, H. Sato, K. Watanabe

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

In this report, we have examined the behavior of heat capacities and Joule-Thomson coefficients in low- and moderate-density regions based on recent theoretical studies of the ideal-gas heat capacity and virial coefficients of R-32, R-125, R-134a, R-143a, and R-152a. The results have been compared with those derived from empirical equations of state which have been recently developed, based on a large quantity of experimental data for these refrigerants. Both results are in good agreement. Proper behaviors for these second-derivative properties justify the use of the empirical equations of state in low-temperature and low-density regions where no experimental data are available.

Original languageEnglish
Pages (from-to)141-148
Number of pages8
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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