Viscosity of gaseous mixtures of HCFC-22 + HCFC-142b at pressures to 6.3 MPa

M. Takahashi, D. Tomida, C. Yokoyama

Research output: Contribution to journalArticlepeer-review

Abstract

The gaseous viscosity of non-azeotropic mixtures of HCFC-22 and HCFC-142b was measured by an oscillating disk viscometer of the Maxwell type from 298.15 K to 423.15 K and at pressures up to 6.3 MPa. The viscosity at approximately atmospheric pressure was predicted with a maximum deviation of 1.84 % and an average deviation of 0.61 % by the Sutherland-Thiesen equation, coefficients of which were determined by the Brokaw method. An empirical equation was developed for the viscosity as a function of composition, temperature, and density. This equation reproduced the observed viscosity with a maximum deviation of 5.61 % and an average deviation of 1.14 %.

Original languageEnglish
Pages (from-to)782-795
Number of pages14
JournalInternational Journal of Thermophysics
Volume30
Issue number3
DOIs
Publication statusPublished - 2009 Jun 1

Keywords

  • HCFC-142b
  • HCFC-22
  • Sutherland-Thiesen equation
  • Viscosity

ASJC Scopus subject areas

  • Condensed Matter Physics

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