Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics

Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics

A thermo-hydraulic performance and entropy generation comparison of an evacuated tube solar collector using water and titanium dioxide (TiO2) water-based nanofluid as working fluids is carried out by means of Computational Fluid Dynamics. It is considered a complete 3D geometry under meteorological...

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Egile Nagusiak: López Núñez, Oscar Alejandro, Lara Chávez, Fernando, Cardenas Robles, Arilí, Gónzalez Ángeles, Álvaro
Formatua: Online
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Argitaratua: Universidad Autónoma de Baja California 2023
Sarrera elektronikoa:https://recit.uabc.mx/index.php/revista/article/view/260
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spelling recit-article-2602024-02-13T02:50:36Z Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics Estudio numérico de un colector solar utilizando agua y nanofluido de dióxido de titanio base agua como fluidos de trabajo mediante la dinámica de fluidos computacional López Núñez, Oscar Alejandro Lara Chávez, Fernando Cardenas Robles, Arilí Gónzalez Ángeles, Álvaro Solar collector Nanofluid Computational fluid dynamics Entropy generation Colector solar Nanofluido Dinámica de fluidos computacional Generación de entropía A thermo-hydraulic performance and entropy generation comparison of an evacuated tube solar collector using water and titanium dioxide (TiO2) water-based nanofluid as working fluids is carried out by means of Computational Fluid Dynamics. It is considered a complete 3D geometry under meteorological conditions of the city of Mexicali, Mexico under an operation time of 9 hours. It was found that, throughout the operation time, the evacuated tube solar collector had a better performance in terms of outlet temperature and velocity inside the solar collector using the nanofluid than using only water as a working fluid. The phenomena of viscous effects, heat transfer, and heat loss in a global and local form are considered in the formulation of the entropy generation. The local entropy generation formulation also allows us to illustrate the exact location of the irreversibilities. It was found that, using TiO2 water-based nanofluid as a working fluid leads to a reduction of the entropy generation in all the evacuated tube solar collectors. Finally, this type of analysis by obtaining the global and local entropy generation can be helpful to improve their performance through entropy minimization. El presente trabajo se centra en el estudio numérico comparativo del desempeño térmico, hidráulico y de generación de entropía de un colector solar de tubos evacuados utilizando agua y nanofluido de dióxido de titanio (TiO2) de base agua como fluidos de trabajo por medio de la Dinámica de Fluidos Computacional. El estudio consideró una geometría completa en 3D bajo las condiciones meteorológicas de la ciudad de Mexicali, México, en una operación de 9 horas. De acuerdo con los resultados, en todo el periodo de operación, el colector solar de tubos evacuados tuvo un mejor rendimiento en términos de su temperatura de salida, así como en la velocidad dentro de éste al utilizar el nanofluido en lugar de usar solo agua como fluido de trabajo. Además, para la formulación de la generación de entropía se tomaron en cuenta las irreversibilidades generadas por los fenómenos de efectos viscosos, transferencia de calor y pérdida de calor, tanto de manera global como de manera local. La formulación de la generación de entropía local permite mostrar la localización exacta de las diferentes irreversibilidades. Así mismo, se encontró que al utilizar el nanofluido, se obtiene una reducción significativa de la generación de entropía en todo el colector solar. Finalmente, la obtención de la generación de entropía por medio de este tipo de análisis puede ayudar a mejorar el rendimiento de los colectores solares a través de la minimización de entropía. Universidad Autónoma de Baja California 2023-09-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html text/xml https://recit.uabc.mx/index.php/revista/article/view/260 10.37636/recit.v6n3e260 REVISTA DE CIENCIAS TECNOLÓGICAS; Vol. 6 No. 3 (2023): July-September; e260 REVISTA DE CIENCIAS TECNOLÓGICAS; Vol. 6 Núm. 3 (2023): Julio-Septiembre; e260 2594-1925 spa https://recit.uabc.mx/index.php/revista/article/view/260/466 https://recit.uabc.mx/index.php/revista/article/view/260/467 https://recit.uabc.mx/index.php/revista/article/view/260/468 Copyright (c) 2023 Oscar Alejandro López Núñez, Fernando Lara Chávez, Arilí Cardenas-Robles, Álvaro Gónzalez Ángeles https://creativecommons.org/licenses/by/4.0
institution RECIT
collection OJS
language spa
format Online
author López Núñez, Oscar Alejandro
Lara Chávez, Fernando
Cardenas Robles, Arilí
Gónzalez Ángeles, Álvaro
spellingShingle López Núñez, Oscar Alejandro
Lara Chávez, Fernando
Cardenas Robles, Arilí
Gónzalez Ángeles, Álvaro
Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
author_facet López Núñez, Oscar Alejandro
Lara Chávez, Fernando
Cardenas Robles, Arilí
Gónzalez Ángeles, Álvaro
author_sort López Núñez, Oscar Alejandro
title Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
title_short Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
title_full Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
title_fullStr Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
title_full_unstemmed Numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
title_sort numerical study of a solar collector using water and titanium dioxide water-based nanofluid as working fluids by means of computational fluid dynamics
description A thermo-hydraulic performance and entropy generation comparison of an evacuated tube solar collector using water and titanium dioxide (TiO2) water-based nanofluid as working fluids is carried out by means of Computational Fluid Dynamics. It is considered a complete 3D geometry under meteorological conditions of the city of Mexicali, Mexico under an operation time of 9 hours. It was found that, throughout the operation time, the evacuated tube solar collector had a better performance in terms of outlet temperature and velocity inside the solar collector using the nanofluid than using only water as a working fluid. The phenomena of viscous effects, heat transfer, and heat loss in a global and local form are considered in the formulation of the entropy generation. The local entropy generation formulation also allows us to illustrate the exact location of the irreversibilities. It was found that, using TiO2 water-based nanofluid as a working fluid leads to a reduction of the entropy generation in all the evacuated tube solar collectors. Finally, this type of analysis by obtaining the global and local entropy generation can be helpful to improve their performance through entropy minimization.
publisher Universidad Autónoma de Baja California
publishDate 2023
url https://recit.uabc.mx/index.php/revista/article/view/260
_version_ 1792095382302359552

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