Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Saturated-Liquid Viscosity of Ten Binary and Ternary Alternative Refrigerant Mixtures. Part 1: Measurements

Published

Author(s)

Arno R. Laesecke, R F. Hafer, Dylan Morris

Abstract

The saturated liquid viscosity of ten binary and ternary refrigerant mixtures composed of difluoromethane (R32, 1,1,1,2-tetrafluoroethane (R134a), pentafluoroethane (R125), and propane (R290) were measured in a sealed gravitational capillary viscometer with a straight vertical capillary from 245 to 345 K or to a maximum vapor pressure of 3 Mpa. The maximum uncertainty of the measurements is estimated to be at 2.8% for the mixtures R32 + propane. The largest contribution to the total uncertainty is that of the saturated liquid and vapor densities of the mixtures, which had to be estimated. Comparisons with viscosity data from the literature show agreement within the mutual uncertainty for all but one data set. Similar agreement is found with predicted viscosities using the extended corresponding-states model in NIST standard reference Database 23 (REFPROP), except for the mixtures of the polar fluids R32 and R134a with the nonpolar propane. Their viscosity-composition dependences are strongly nonlinear.
Citation
Journal of Chemical and Engineering Data
Volume
46
Issue
No. 2

Keywords

alternative refrigerants, binary mixtures, extended corresponding states method, propane, R125, R134a, R290, R32, sealed gravitational capillary viscomete

Citation

Laesecke, A. , Hafer, R. and Morris, D. (2001), Saturated-Liquid Viscosity of Ten Binary and Ternary Alternative Refrigerant Mixtures. Part 1: Measurements, Journal of Chemical and Engineering Data, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=831664 (Accessed April 16, 2024)
Created February 10, 2001, Updated February 17, 2017