Heat capacities and Joule-Thomson coefficients of HFC refrigerants

A. Yokozeki, H. Sato, K. Watanabe

Research output: Contribution to journalArticle

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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
Publication statusPublished - 1999 Jan

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norflurane
refrigerants
Refrigerants
Equations of state
Specific heat
equations of state
specific heat
virial coefficients
ideal gas
coefficients
Gases
Derivatives
Temperature

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy (miscellaneous)

Cite this

Heat capacities and Joule-Thomson coefficients of HFC refrigerants. / Yokozeki, A.; Sato, H.; Watanabe, K.

In: International Journal of Thermophysics, Vol. 20, No. 1, 01.1999, p. 141-148.

Research output: Contribution to journalArticle

Yokozeki, A, Sato, H & Watanabe, K 1999, 'Heat capacities and Joule-Thomson coefficients of HFC refrigerants', International Journal of Thermophysics, vol. 20, no. 1, pp. 141-148.
Yokozeki, A. ; Sato, H. ; Watanabe, K. / Heat capacities and Joule-Thomson coefficients of HFC refrigerants. In: International Journal of Thermophysics. 1999 ; Vol. 20, No. 1. pp. 141-148.
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