Thermal conductivity of binary refrigerant mixtures of HFC-32/125 and HFC-32/134a in the liquid phase

X. Gao, Yuji Nagasaka, A. Nagashima

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The liquid thermal conductivity of mixtures of HFC-32/125 and HFC-32/134a was measured using the transient hot-wire apparatus in the temperature ranges from 213 to 293 K and from 193 to 313 K, respectively, in the pressure range from 2 to 30 MPa and with HFC-32 mass fractions of 0.249, 0.500, and 0.750 for each system. The uncertainty of the thermal conductivity was estimated to be ±0.7%. For practical applications, the thermal conductivity data for the two mixtures were represented by a polynomial in temperature, pressure, and mass fraction of HFC-32 with a standard deviation of 1.0%.

Original languageEnglish
Pages (from-to)1403-1415
Number of pages13
JournalInternational Journal of Thermophysics
Volume20
Issue number5
Publication statusPublished - 1999

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refrigerants
Refrigerants
Thermal conductivity
liquid phases
thermal conductivity
Thermal conductivity of liquids
Liquids
Polynomials
Wire
Temperature
standard deviation
polynomials
wire
temperature
liquids
pentafluoroethane
Uncertainty

ASJC Scopus subject areas

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

Cite this

Thermal conductivity of binary refrigerant mixtures of HFC-32/125 and HFC-32/134a in the liquid phase. / Gao, X.; Nagasaka, Yuji; Nagashima, A.

In: International Journal of Thermophysics, Vol. 20, No. 5, 1999, p. 1403-1415.

Research output: Contribution to journalArticle

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