Cargando…

Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium

Heat exchangers play an important role in different industrial processes; therefore, it is important to characterize these devices to improve their efficiency by guaranteeing the efficient use of energy. In this study, we carry out a numerical analysis of flow dynamics, heat transfer, and entropy ge...

Descripción completa

Detalles Bibliográficos
Autores principales: Ovando-Chacon, Guillermo Efren, Ovando-Chacon, Sandy Luz, Rodriguez-Leon, Abelardo, Diaz-Gonzalez, Mario, Hernandez-Zarate, Jorge Arturo, Servin-Martinez, Alberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516522/
https://www.ncbi.nlm.nih.gov/pubmed/33285861
http://dx.doi.org/10.3390/e22010086
_version_ 1783587021152845824
author Ovando-Chacon, Guillermo Efren
Ovando-Chacon, Sandy Luz
Rodriguez-Leon, Abelardo
Diaz-Gonzalez, Mario
Hernandez-Zarate, Jorge Arturo
Servin-Martinez, Alberto
author_facet Ovando-Chacon, Guillermo Efren
Ovando-Chacon, Sandy Luz
Rodriguez-Leon, Abelardo
Diaz-Gonzalez, Mario
Hernandez-Zarate, Jorge Arturo
Servin-Martinez, Alberto
author_sort Ovando-Chacon, Guillermo Efren
collection PubMed
description Heat exchangers play an important role in different industrial processes; therefore, it is important to characterize these devices to improve their efficiency by guaranteeing the efficient use of energy. In this study, we carry out a numerical analysis of flow dynamics, heat transfer, and entropy generation inside a heat exchanger; an aqueous medium used for oil extraction flows through the exchanger. Hot water flows on the shell side; nanoparticles have been added to the water in order to improve heat transfer toward the cold aqueous medium flowing on the tube side. The aqueous medium must reach a certain temperature in order to obtain its oil extraction properties. The analysis is performed for different Richardson numbers (Ri = 0.1–10), nanofluid volume fractions (φ = 0.00–0.06), and heat exchanger heights (H = 0.6–1.0). Results are presented in terms of Nusselt number, total entropy generation, Bejan number, and performance evaluation criterion. Results showed that heat exchanger performance increases with the increase in Ri when Ri > 1 and when reducing H.
format Online
Article
Text
id pubmed-7516522
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-75165222020-11-09 Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium Ovando-Chacon, Guillermo Efren Ovando-Chacon, Sandy Luz Rodriguez-Leon, Abelardo Diaz-Gonzalez, Mario Hernandez-Zarate, Jorge Arturo Servin-Martinez, Alberto Entropy (Basel) Article Heat exchangers play an important role in different industrial processes; therefore, it is important to characterize these devices to improve their efficiency by guaranteeing the efficient use of energy. In this study, we carry out a numerical analysis of flow dynamics, heat transfer, and entropy generation inside a heat exchanger; an aqueous medium used for oil extraction flows through the exchanger. Hot water flows on the shell side; nanoparticles have been added to the water in order to improve heat transfer toward the cold aqueous medium flowing on the tube side. The aqueous medium must reach a certain temperature in order to obtain its oil extraction properties. The analysis is performed for different Richardson numbers (Ri = 0.1–10), nanofluid volume fractions (φ = 0.00–0.06), and heat exchanger heights (H = 0.6–1.0). Results are presented in terms of Nusselt number, total entropy generation, Bejan number, and performance evaluation criterion. Results showed that heat exchanger performance increases with the increase in Ri when Ri > 1 and when reducing H. MDPI 2020-01-10 /pmc/articles/PMC7516522/ /pubmed/33285861 http://dx.doi.org/10.3390/e22010086 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ovando-Chacon, Guillermo Efren
Ovando-Chacon, Sandy Luz
Rodriguez-Leon, Abelardo
Diaz-Gonzalez, Mario
Hernandez-Zarate, Jorge Arturo
Servin-Martinez, Alberto
Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title_full Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title_fullStr Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title_full_unstemmed Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title_short Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium
title_sort numerical study of nanofluid irreversibilities in a heat exchanger used with an aqueous medium
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516522/
https://www.ncbi.nlm.nih.gov/pubmed/33285861
http://dx.doi.org/10.3390/e22010086
work_keys_str_mv AT ovandochaconguillermoefren numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium
AT ovandochaconsandyluz numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium
AT rodriguezleonabelardo numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium
AT diazgonzalezmario numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium
AT hernandezzaratejorgearturo numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium
AT servinmartinezalberto numericalstudyofnanofluidirreversibilitiesinaheatexchangerusedwithanaqueousmedium