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Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin

Heat transport augmentation in closed chambers can be achieved using nanofluids and extended heat transfer surfaces. This research is devoted to the computational analysis of natural convection energy transport and entropy emission within a closed region, with isothermal vertical borders and a heat-...

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Autores principales: Le, Xuan Hoang Khoa, Oztop, Hakan F., Selimefendigil, Fatih, Sheremet, Mikhail A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030578/
https://www.ncbi.nlm.nih.gov/pubmed/35455186
http://dx.doi.org/10.3390/e24040523
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author Le, Xuan Hoang Khoa
Oztop, Hakan F.
Selimefendigil, Fatih
Sheremet, Mikhail A.
author_facet Le, Xuan Hoang Khoa
Oztop, Hakan F.
Selimefendigil, Fatih
Sheremet, Mikhail A.
author_sort Le, Xuan Hoang Khoa
collection PubMed
description Heat transport augmentation in closed chambers can be achieved using nanofluids and extended heat transfer surfaces. This research is devoted to the computational analysis of natural convection energy transport and entropy emission within a closed region, with isothermal vertical borders and a heat-conducting solid fin placed on the hot border. Horizontal walls were assumed to be adiabatic. Control relations written using non-primitive variables with experimentally based correlations for nanofluid properties were computed by the finite difference technique. The impacts of the fin size, fin position, and nanoadditive concentration on energy transfer performance and entropy production were studied. It was found that location of the long fin near the bottom wall allowed for the intensification of convective heat transfer within the chamber. Moreover, this position was characterized by high entropy generation. Therefore, the minimization of the entropy generation can define the optimal location of the heat-conducting fin using the obtained results. An addition of nanoparticles reduced the heat transfer strength and minimized the entropy generation.
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spelling pubmed-90305782022-04-23 Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin Le, Xuan Hoang Khoa Oztop, Hakan F. Selimefendigil, Fatih Sheremet, Mikhail A. Entropy (Basel) Article Heat transport augmentation in closed chambers can be achieved using nanofluids and extended heat transfer surfaces. This research is devoted to the computational analysis of natural convection energy transport and entropy emission within a closed region, with isothermal vertical borders and a heat-conducting solid fin placed on the hot border. Horizontal walls were assumed to be adiabatic. Control relations written using non-primitive variables with experimentally based correlations for nanofluid properties were computed by the finite difference technique. The impacts of the fin size, fin position, and nanoadditive concentration on energy transfer performance and entropy production were studied. It was found that location of the long fin near the bottom wall allowed for the intensification of convective heat transfer within the chamber. Moreover, this position was characterized by high entropy generation. Therefore, the minimization of the entropy generation can define the optimal location of the heat-conducting fin using the obtained results. An addition of nanoparticles reduced the heat transfer strength and minimized the entropy generation. MDPI 2022-04-07 /pmc/articles/PMC9030578/ /pubmed/35455186 http://dx.doi.org/10.3390/e24040523 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Le, Xuan Hoang Khoa
Oztop, Hakan F.
Selimefendigil, Fatih
Sheremet, Mikhail A.
Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title_full Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title_fullStr Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title_full_unstemmed Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title_short Entropy Analysis of the Thermal Convection of Nanosuspension within a Chamber with a Heat-Conducting Solid Fin
title_sort entropy analysis of the thermal convection of nanosuspension within a chamber with a heat-conducting solid fin
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030578/
https://www.ncbi.nlm.nih.gov/pubmed/35455186
http://dx.doi.org/10.3390/e24040523
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