Speeds of Sound in n-Pentane at Temperatures from 233.50 to 473.15 K at Pressures up to 390 MPa

Scholz, Christian W., Sanchez Vicente, Yolanda, Tananilgul, Tana, Thol, Monika, Trusler, J. P. Martin and Richter, Markus (2020) Speeds of Sound in n-Pentane at Temperatures from 233.50 to 473.15 K at Pressures up to 390 MPa. Journal of Chemical & Engineering Data, 65 (7). pp. 3679-3689. ISSN 0021-9568

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Official URL: https://doi.org/10.1021/acs.jced.0c00299


We report speeds of sound in n-pentane measured using two similar apparatus, located at Ruhr University Bochum (RUB) and Imperial College London (ICL), covering different ranges of temperature and pressure. At RUB, measurements were conducted at temperatures from 233.50 to 353.20 K with pressures up to 20 MPa, while temperatures from 263.15 to 473.15 K with pressures up to 390 MPa were covered at ICL. Accounting for the uncertainties in temperature, pressure, path-length calibration, and pulse timing, the relative expanded combined uncertainty (k = 2) in the speed of sound varied from 0.015 to 0.18% over the whole region investigated. Nevertheless, small differences averaging at 0.13% are found between the two data sets in the region of overlap. The experimental data reported in this work have been partly used in the development of a new fundamental equation of state for n-pentane.

Item Type: Article
Uncontrolled Keywords: impurities, liquids, sound velocity, calibration, equation of state
Subjects: F200 Materials Science
F300 Physics
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 14 Jan 2021 15:45
Last Modified: 14 Jan 2021 15:45
URI: http://nrl.northumbria.ac.uk/id/eprint/45224

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