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VISCOSITY PREDICTION OF REFRIGERANTS UNDER SUBCRITICAL/SUPERCRITICAL CONDITIONS

ABSTRACT
Viscosity is an important thermophysical property of fluids. Viscosities of refrigerants were predicted based on friction theory combined with the Lemmon and Span short reference equation of state. This model is valid for the temperature up to 397 K and pressure up to 40 MPa, which cover both the subcritical and supercritical regions. Experimental data were further used to validate the model. Under all test conditions, the accuracy is better than 6%, which is acceptable in most practical applications.
KEYWORDS
PAPER SUBMITTED: 2015-01-10
PAPER REVISED: 2015-05-05
PAPER ACCEPTED: 2015-05-12
PUBLISHED ONLINE: 2015-10-25
DOI REFERENCE: https://doi.org/10.2298/TSCI1504293Y
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE 4, PAGES [1293 - 1296]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence