A new method for liquid viscosity measurements: Inclined-tube viscometry

Y. Zhang, M. G. He, R. Xue, X. F. Wang, Q. Zhong, X. X. Zhang

Research output: Contribution to journalArticle

Abstract

In this article, a method which can be used to measure the viscosity of liquids with an inclined tube at high pressures and for low-boiling substances is described. The measurement equation was established. The measuring methods for two unknown parameters which are in the measurement equation are presented, and a viscosity measurement system was designed and constructed, which consists of an experimental cell, an inclination-angle control subsystem, a constant temperature subsystem, and a data collection and process subsystem. At atmospheric pressure, the kinematic viscosity of pure water was measured at temperatures from 273.15 K to 333.15 K to demonstrate the performance of the apparatus. The results show that the absolute average relative deviation is 0.84% in comparison with reliable literature values. The kinematic viscosity of saturated liquid R134a and R600a were also measured at temperatures from 273.15 K to 295.15 K and 273.15 K to 300.15 K, respectively, and the corresponding absolute average relative deviations are 1.04% and 1.02% in comparison with reliable literature values. These experimental results demonstrate the performance of the apparatus, while providing estimates of the uncertainty and reliability of the experimental system.

Original languageEnglish (US)
Pages (from-to)483-504
Number of pages22
JournalInternational Journal of Thermophysics
Volume29
Issue number2
DOIs
StatePublished - Apr 1 2008
Externally publishedYes

Keywords

  • Inclined tube
  • Pure water
  • R134a
  • R600a
  • Viscosity

ASJC Scopus subject areas

  • Condensed Matter Physics

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