Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger

Heat Exchanger are among those engineered designs in which is widely used among many industries. Thus, in this research a double pipe heat exchanger is numerically and mathematically investigated, in which the various characteristics of heat transfer are evaluated. The experiment is mainly conducted...

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Main Author:	Faleh, Mohammed
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/92008/1/MohammedFalehMSChE2020.pdf.pdf
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spelling	my-utm-ep.920082021-08-30T04:17:29Z Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger 2020 Faleh, Mohammed TP Chemical technology Heat Exchanger are among those engineered designs in which is widely used among many industries. Thus, in this research a double pipe heat exchanger is numerically and mathematically investigated, in which the various characteristics of heat transfer are evaluated. The experiment is mainly conducted using nanofluids, hence why the characteristics of the nanofluid itself is also considered a variable. Copper oxide, and aluminum oxide are the two nanoparticles used to conduct the simulation. Each of these are tested using different diameter sizes, as well as different concentrations dissolved in water. The Reynolds Number is also floating between 5000 and 20,000. The aim is to determine the effect of volume friction and diameter of nanoparticle on heat transfer and fluid flow, via the use of a double pipe heat exchanger. This is done by numerically investigating the heat exchanger by using ANSYS software system, which is able to simulate the results as well as the various characteristics involved. The results indicated that aluminum oxide is superior to copper oxide in terms of heat transfer enhancement. They also indicated that as the diameter of the nanoparticles increased, the heat transfer effectiveness decreased. The most optimal solution presented itself as the lowest diameter, and highest concentration in relation to the base fluid. When compared to the conventional fluid (water) the heat transfer coefficient was improved by 94.7% on average, and the Nusselt Number was also improved by 44.5%. Furthermore, there was a 45.37% improvement observed when comparing the best obtained results to an existing literature that uses a double pipe heat exchanger, and a 61.3% improvement for when the results are compared to an existing baseline straight tube heat exchanger. The results also indicated that there are minor differences between parallel and counter-flow regimes in the double pipe heat exchanger, with the counter-flow performing better at higher Reynolds numbers, while the parallel performs better when under 10,000 Reynolds number. This indicates that the proposed solution is practical and better to use versus water. 2020 Thesis http://eprints.utm.my/id/eprint/92008/ http://eprints.utm.my/id/eprint/92008/1/MohammedFalehMSChE2020.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:139023 masters Universiti Teknologi Malaysia 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 Faleh, Mohammed Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
description	Heat Exchanger are among those engineered designs in which is widely used among many industries. Thus, in this research a double pipe heat exchanger is numerically and mathematically investigated, in which the various characteristics of heat transfer are evaluated. The experiment is mainly conducted using nanofluids, hence why the characteristics of the nanofluid itself is also considered a variable. Copper oxide, and aluminum oxide are the two nanoparticles used to conduct the simulation. Each of these are tested using different diameter sizes, as well as different concentrations dissolved in water. The Reynolds Number is also floating between 5000 and 20,000. The aim is to determine the effect of volume friction and diameter of nanoparticle on heat transfer and fluid flow, via the use of a double pipe heat exchanger. This is done by numerically investigating the heat exchanger by using ANSYS software system, which is able to simulate the results as well as the various characteristics involved. The results indicated that aluminum oxide is superior to copper oxide in terms of heat transfer enhancement. They also indicated that as the diameter of the nanoparticles increased, the heat transfer effectiveness decreased. The most optimal solution presented itself as the lowest diameter, and highest concentration in relation to the base fluid. When compared to the conventional fluid (water) the heat transfer coefficient was improved by 94.7% on average, and the Nusselt Number was also improved by 44.5%. Furthermore, there was a 45.37% improvement observed when comparing the best obtained results to an existing literature that uses a double pipe heat exchanger, and a 61.3% improvement for when the results are compared to an existing baseline straight tube heat exchanger. The results also indicated that there are minor differences between parallel and counter-flow regimes in the double pipe heat exchanger, with the counter-flow performing better at higher Reynolds numbers, while the parallel performs better when under 10,000 Reynolds number. This indicates that the proposed solution is practical and better to use versus water.
format	Thesis
qualification_level	Master's degree
author	Faleh, Mohammed
author_facet	Faleh, Mohammed
author_sort	Faleh, Mohammed
title	Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
title_short	Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
title_full	Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
title_fullStr	Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
title_full_unstemmed	Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
title_sort	heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2020
url	http://eprints.utm.my/id/eprint/92008/1/MohammedFalehMSChE2020.pdf.pdf
_version_	1747818554915291136

Heat transfer enhancement using nanofluids in a parallel flow double pipe heat exchanger

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