Viscosity Measurements of Ethyl Fluoride (R161) from 243 K to 363 K at Pressures up to 30 MPa

• Published in: International journal of thermophysics Vol. 36; no. 10-11; pp. 2497 - 2506
• Main Authors: Meng, Xianyang, Gu, Xiaoyun, Wu, Jiangtao, Bi, Shengshan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-11-2015
• Subjects: Classical Mechanics; Condensed Matter Physics; Confidence intervals; Correlation; Deviation; Fluorides; Industrial Chemistry/Chemical Engineering; Ozone depletion; Physical Chemistry; Physics; Physics and Astronomy; Refrigerants; Schedules; Viscosity measurement; Viscosity; Ethyl fluoride; R161; Vibrating wire
• ISSN: 0195-928X; 1572-9567
• DOI: 10.1007/s10765-013-1546-4

The Montreal Protocol and its subsequent amendments have created a schedule to replace ozone depletion substances, such as chlorofluorocarbons and hydrochlorofluorocarbons, with chlorine-free molecules in several industrial applications. Ethyl fluoride (R161, C
2
H
5
F, 353-36-6) was found to be a potential alternative refrigerant for the replacement of controlled substances, such as R22 with excellent cycle performance. In this work, the viscosity of ethyl fluoride is reported at temperatures from 243 K to 363 K and at pressures from saturation pressure to 30 MPa. The experiment was performed with a calibrated vibrating-wire viscometer, which exhibited a combined expanded uncertainty of 2.5 % with a level of confidence of 0.95
(
k
=
2
)
for such a fluid. A scheme based on a hard-spheres model was used to correlate the experimental results. The average absolute deviation of the experimental results from the correlations for R161 is 0.88 %.