Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger

Heat exchangers are an important system used for heat transference. These systems are present in many devices and utilities. These devices can be big such as in oil refineries, or small, such as in fridges and air-conditioners. However, there are several types of heat exchangers, each with their own...

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Main Author:	Siham, Hamid Kadhim
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/92185/1/HamidKadhimSihamMSChE2020.pdf
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spelling	my-utm-ep.921852021-08-30T05:10:05Z Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger 2020 Siham, Hamid Kadhim TP Chemical technology Heat exchangers are an important system used for heat transference. These systems are present in many devices and utilities. These devices can be big such as in oil refineries, or small, such as in fridges and air-conditioners. However, there are several types of heat exchangers, each with their own benefit and advantage. In this study, two types of passive heat transfer solutions are used to numerically investigate the relationship between nanofluid particle diameter and fluid volume fraction concentration. The first is a double pipe with an elliptical cross-section that has a counter-fluid flow mechanic. This is then combined with another passive technique, which is the use of nanoparticles in combination with water, which creates nanofluids. ANSYS was used as a tool to numerically simulate the various scenarios using different nanoparticles. The boundary conditions and geometry, as well as the governing equations and the mesh of the heat exchanger are numerically simulated. The experiment was conducted under a laminar flow regime in an elliptical tube double pipe heat exchanger. The results of the simulation indicated that nanofluids such as silicon oxide, enhance heat transfer when compared to water. However, for the nanofluid characteristics itself, it was observed that as the diameter decreased and the concentration increased, the heat transfer values also improved. The ideal values identified in this research indicated that at 7 % volume fraction, and 15 nm particle size the results are most optimal. There is also an indication that as the Reynolds Number increased, the heat transfer enhancement values such as Nusselt Number and heat transfer coefficient also improve. 2020 Thesis http://eprints.utm.my/id/eprint/92185/ http://eprints.utm.my/id/eprint/92185/1/HamidKadhimSihamMSChE2020.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:139159 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Siham, Hamid Kadhim Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
description	Heat exchangers are an important system used for heat transference. These systems are present in many devices and utilities. These devices can be big such as in oil refineries, or small, such as in fridges and air-conditioners. However, there are several types of heat exchangers, each with their own benefit and advantage. In this study, two types of passive heat transfer solutions are used to numerically investigate the relationship between nanofluid particle diameter and fluid volume fraction concentration. The first is a double pipe with an elliptical cross-section that has a counter-fluid flow mechanic. This is then combined with another passive technique, which is the use of nanoparticles in combination with water, which creates nanofluids. ANSYS was used as a tool to numerically simulate the various scenarios using different nanoparticles. The boundary conditions and geometry, as well as the governing equations and the mesh of the heat exchanger are numerically simulated. The experiment was conducted under a laminar flow regime in an elliptical tube double pipe heat exchanger. The results of the simulation indicated that nanofluids such as silicon oxide, enhance heat transfer when compared to water. However, for the nanofluid characteristics itself, it was observed that as the diameter decreased and the concentration increased, the heat transfer values also improved. The ideal values identified in this research indicated that at 7 % volume fraction, and 15 nm particle size the results are most optimal. There is also an indication that as the Reynolds Number increased, the heat transfer enhancement values such as Nusselt Number and heat transfer coefficient also improve.
format	Thesis
qualification_level	Master's degree
author	Siham, Hamid Kadhim
author_facet	Siham, Hamid Kadhim
author_sort	Siham, Hamid Kadhim
title	Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
title_short	Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
title_full	Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
title_fullStr	Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
title_full_unstemmed	Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
title_sort	numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2020
url	http://eprints.utm.my/id/eprint/92185/1/HamidKadhimSihamMSChE2020.pdf
_version_	1747818576234938368

Numerical investigation of heat transfer enhancement for metal oxide nanofluid in elliptical tube heat exchanger

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