Abstract
In this study, the thermodiffusion coefficient of n-dodecane/n-hexane binary mixture at 25 ∘C mean temperature was determined for several pressure conditions and mass fractions. The experimental technique used to determine the thermodiffusion coefficient was the thermograviational column of cylindrical configuration. In turn, thermophysical properties, such as density, thermal expansion, mass expansion and dynamic viscosity up to 10 MPa were also determined. The results obtained in this work showed a linear relation between the thermophysical properties and the pressure. Thermodiffusion coefficient values confirm a linear effect when the pressure increases. Additionally, a new correlation based on the thermodiffusion coefficient for n C12/n C6 binary mixture at 25 ∘C temperature for any mass fraction and pressures, which reproduces the data within the experimental error, was proposed.
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Acknowledgments
This work was supported by the Research Groups (IT1009-16) and MICRO4FAB from the Basque government, TERDISOMEZ (FIS2014-58950-C2-1-P) and MEZNAFLU (ESP2017-83544-C33-1-P) of the MINECO, DCMIX (AO-2009-0858/1056) and SCCO from the European Space Agency.
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This article belongs to the Topical Collection: Interdisciplinary Science Challenges for Gravity Dependent Phenomena in Physical and Biological Systems
Guest Editors: Jens Hauslage, Ruth Hemmersbach, Valentina Shevtsova
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Lizarraga, I., Bou-Ali, M.M. & Santamaría, C. Thermodiffusion Coefficient Analysis of n-Dodecane /n-Hexane Mixture at Different Mass Fractions and Pressure Conditions. Microgravity Sci. Technol. 30, 591–598 (2018). https://doi.org/10.1007/s12217-018-9604-y
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DOI: https://doi.org/10.1007/s12217-018-9604-y