Análisis de los fenómenos de transporte en mezclas multicomponentes en condiciones terrestres mediante técnicas convectivas y no convectivas
In this thesis, Soret, thermodiffusion and diffusion coefficients of several binary and ternary mixtures have been determined. In addition, thermophysical and optical properties such as density, thermal expansion, mass expansion, dynamic viscosity, refractive index and contrast factor such as deriva...
| Idioma: | Spanish |
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| Publicación: |
Mondragon Unibertsitatea. Goi Eskola Politeknikoa
2019
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| Materia: | |
| Acceso electrónico SOLREBILTEGIA: |
https://hdl.handle.net/20.500.11984/1205 https://doi.org/10.48764/pzmb-tk06 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=148134 |
| Resumen: |
In this thesis, Soret, thermodiffusion and diffusion coefficients of several binary and ternary mixtures have been determined. In addition, thermophysical and optical properties such as density, thermal expansion, mass expansion, dynamic viscosity, refractive index and contrast factor such as derivatives of the refractive index as a function of temperature and concentration have been obtained.
One of the mixtures that has been analyzed is composed by Toluene‐Methanol‐Cyclohexane.
These mixtures correspond to the second phase of DCMIX project. We have studied 26 binary mixtures of this system. This analysis has been carried out by Prof. Köhler’s group of Universität Bayreuth from Germany and Prof. Shevtsova’s group of Université Libre de Bruxelles from Belgium.
This work, has allowed to frame the ternary parameter space by thoroughly investigating the boundaries along the binary composition lines. Correlations for the thermophysical properties have been included in this study. By means of Thermogravitational Column, Slidding Symmetric Tubes, Optical Beam Deflection and Optical Digital Interferometry techniques, it has also been obtained Soret, thermodiffusion and diffusion. Additionally, we have determined the diffusion coefficients of Toluene‐Methanol‐Cyclohexane of a ternary mixture by Slidding Symmetric Tubes technique.
In the third phase of DCMIX project, the thermodiffusion coefficient of Triethylene Glycol‐Water‐Ethanol system has been determined. In total, 12 binary mixtures and 2 ternary mixtures have been analyzed.
Moreover, we have determined the Soret coefficient of ternary mixtures composed by Methylnaphthalene‐Toluene‐nDecane. The diffusion coefficients have been measured by Slidding Symmetric Tubes technique and the thermodiffusion coefficients were measured previously in Fluid Mechanic groups.
Lastly, we have applied the Digital Interferometry analysis method to the thermogravitational micro‐column. By this method, the entire concentration distribution in the height of the column has been determined. Besides, the installation is equipped by two different wavelength laser in order to ternary mixtures under the hermogravitational effect using optical analysis method. |
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