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 language | English |
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Pages (from-to) | 782-795 |
Number of pages | 14 |
Journal | International Journal of Thermophysics |
Volume | 30 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2009 Jun 1 |
Keywords
- HCFC-142b
- HCFC-22
- Sutherland-Thiesen equation
- Viscosity
ASJC Scopus subject areas
- Condensed Matter Physics