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Speeds of Sound in Methanol at Temperatures from 233.33 to 353.21 K at Pressures up to 20 MPa

Authors
  • Scholz, Christian W.1
  • Span, Roland1
  • 1 Ruhr University Bochum, Universitätsstraße 150, Bochum, 44801, Germany , Bochum (Germany)
Type
Published Article
Journal
International Journal of Thermophysics
Publisher
Springer US
Publication Date
Mar 08, 2021
Volume
42
Issue
5
Identifiers
DOI: 10.1007/s10765-021-02811-2
Source
Springer Nature
Keywords
License
Green

Abstract

We report experimental speeds of sound in methanol. Measurements were conducted at temperatures from 233 to 353 K with pressures up to 20 MPa using the double-path length pulse-echo technique. The relative expanded combined uncertainty (k = 2) in measurement was estimated to vary from 0.012 to 0.014%, considering contributions from temperature, pressure, path length calibration, pulse timing, and purity of the sample. Experimental speeds of sound gained in the scope of this work were compared with the equation of state by de Reuck and Craven, as well as with further data from literature.

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