International Journal of Thermophysics

, Volume 14, Issue 1, pp 45–53 | Cite as

Liquid viscosities and densities of HFC-134a+glycol mixtures

  • A. Kumagai
  • H. Mochida
  • S. Takahashi


Liquid viscosity and density of six binary mixtures of HFC-134a with glycols [ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol (400), and polypropylene glycol (2000)] have been measured in the temperature range from 273 to 333 K. The viscosity was measured by a rolling-ball viscometer calibrated with standard liquids of viscosities and densities (JS5, JS10, JS20, and JS50). The density was measured with a glass pycnometer. The uncertainties of the measurements were estimated to be less than 3.4 % for viscosity and 0.04 % for density, respectively. An equation is given to represent the obtained viscosity values as a function of weight fraction and temperature.

Key words

density diethylene glycol ethylene glycol HFC-134a polyethylene glycol polypropylene glycol tetraethylene glycol triethylene glycol viscosity 


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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • A. Kumagai
    • 1
  • H. Mochida
    • 1
  • S. Takahashi
    • 1
  1. 1.Institute for Chemical Reaction ScienceTohoku UniversitySendaiJapan

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