Viscosity and density measurements on liquid n-heptadecane at high pressures

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Autor(es): dc.creatorSequeira, Maria Carolina-
Autor(es): dc.creatorAvelino, Helena Maria da Nóbrega Teixeira-
Autor(es): dc.creatorCaetano, Fernando J. P.-
Autor(es): dc.creatorFareleira, João M. N. A.-
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Descrição: dc.descriptionThis article reports novel measurements of the viscosity, η, of liquid n-heptadecane at pressures up to 70 MPa, along six isotherms between 303 and 358 K. The experiments were carried out using a vibrating wire viscometer operated in the forced mode. The 303 and 313 K isotherms have a restricted range of pressures to avoid eventual solidification. The present measurements have an uncertainty less than U(η) = 0.015·η with a confidence level of 0.95. Complementary measurements of the density, ρ, were performed with the same ranges of temperature and pressure, using a DMA HP Anton Paar U-tube densimeter, with a DMA 5000 instrument as a reading unit. The overall maximum uncertainty is U(ρ) = 0.002·ρ with a confidence level of 0.95. The article provides a correlation of the viscosity of compressed liquid n-heptadecane with the molar volume, constructed by means of a scheme based on a modified hard-sphere theory, which describes the experimental data within ca. 1%. A program is provided in the Supporting Information to promptly perform interpolation of the viscosity as a function of temperature and pressure. The isothermal compressibility and the isobaric thermal expansivity were calculated from the density. Viscosity–pressure coefficients have also been determined from the viscosity.-
Descrição: dc.descriptionThis work was supported by the Project UID/QUI/00100/2013 and Project UID/QUI/00100/2019 funded by Fundação para a Ciencia e a Tecnologia (FCT), Portugal. The authors ̂are grateful to FCT, Portugal, for its support.-
Descrição: dc.descriptioninfo:eu-repo/semantics/publishedVersion-
Idioma: dc.languageen-
Relação: dc.relationUID/QUI/00100/ 2013-
Relação: dc.relationUID/QUI/00100/2019-
Direitos: dc.rightsrestrictedAccess-
Palavras-chave: dc.subjectCompressibility-
Palavras-chave: dc.subjectViscosity-
Palavras-chave: dc.subjectAtmospheric pressure-
Palavras-chave: dc.subjectVibrating wire-
Palavras-chave: dc.subjectODS::09:Indústria, Inovação e Infraestruturas-
Título: dc.titleViscosity and density measurements on liquid n-heptadecane at high pressures-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Aberto - Universidade Aberta (Portugal)

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