Number of the records: 1  

Density measurements of squalane using single-sinker and vibrating-tube densimeters

  1. 1.
    SYSNO ASEP0588171
    Document TypeA - Abstract
    R&D Document TypeThe record was not marked in the RIV
    R&D Document TypeNení vybrán druh dokumentu
    TitleDensity measurements of squalane using single-sinker and vibrating-tube densimeters
    Author(s) Blahut, Aleš (UT-L) RID, ORCID
    Prokopová, Olga (UT-L) ORCID
    Vinš, Václav (UT-L) RID, ORCID
    Soba, L. (DE)
    Thol, M. (DE)
    Span, R. (DE)
    Number of authors6
    Year of issue2024
    Source TitleTwenty-Second Symposium on Thermophysical Properties and Eighteenth International Conference on the Properties of Water and Steam. - Boulder, 2024
    Number of pages1 s.
    Publication formOnline - E
    ActionSymposium on Thermophysical Properties /22./ and International Conference on the Properties of Water and Steam /18./
    Event date23.06.2024 - 28.06.2024
    VEvent locationColorado
    CountryUS - United States
    Event typeWRD
    Languageeng - English
    CountryUS - United States
    Keywordssqualane ; density ; single-sinker densimeter ; vibrating tube densimeter
    OECD categoryThermodynamics
    R&D ProjectsEF18_053/0017555 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportUT-L - RVO:61388998
    AnnotationSqualane, an oily long-chain alkane (C30H62), has been identified as a promising reference material for viscosity measurements of petroleum fluids under typical reservoir conditions covering high temperatures and pressures. To meet the need for a reliable reference equation, several correlations for the viscosity and density of squalane have been developed over the last decade, incorporating numerous recent experimental data. In the case of liquid densities, a significant amount of the underlying data has been obtained using the vibrating tube method, which however has certain accuracy limitations when measuring viscous liquids such as squalane. Typically, an instrument automatic built-in correction or some semi-empirical formulas are used to account for the effect of viscosity on the resulting density. This contribution presents new accurate liquid density data for squalane from 293 K to 453 K and from near ambient pressure up to 20 MPa, measured with a single-sinker magnetic-suspension densimeter, which are considered to be insensitive to sample viscosity. Simultaneously, new data acquired with a commercially available vibrating tube densimeter (VTD) on the same batch of squalane are presented. The performance of the VTD calibrated with dry air and water using automatic instrument correction for the sample viscosity can thus be evaluated.
    New results successfully correlated with the Tait equation within an experimental uncertainty of less than 0.01 % are also compared with selected literature data.
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2025
Number of the records: 1  

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