Effect of tube shape on the performance of a fin and tube heat exchanger

A numerical study is carried out to test the effect of tube shape on heat transfer and fluid flow in a finned tube heat exchanger. The effects of different shapes (circular, flat, elliptical and oval in both orientations: left and right) are analyzed. The simulations are carried out for two-dimensio...

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Main Authors: Djamel Sahel, Houari Ameur, Mustapha Mellal
Format: Article
Language:English
Published: Universiti Malaysia Pahang Publishing 2020-06-01
Series:Journal of Mechanical Engineering and Sciences
Subjects:
Online Access:https://journal.ump.edu.my/jmes/article/view/2764
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author Djamel Sahel
Houari Ameur
Mustapha Mellal
author_facet Djamel Sahel
Houari Ameur
Mustapha Mellal
author_sort Djamel Sahel
collection DOAJ
description A numerical study is carried out to test the effect of tube shape on heat transfer and fluid flow in a finned tube heat exchanger. The effects of different shapes (circular, flat, elliptical and oval in both orientations: left and right) are analyzed. The simulations are carried out for two-dimensional and external flow of an incompressible fluid with Reynolds numbers varying between 3000 and 20000. The results obtained indicate that the shape of the tube directly affects the thermal and dynamic behaviors of a fin and tube heat exchanger. Where the circular tube ensures higher heat transfer coefficient of about 18% than the flat tube, and it generate a moderate pressure drop of about 10% in the same conditions. Also, some reliable empirical correlations are proposed to predict the Nusselt number and the friction factor.
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spelling doaj.art-71dfd4b73cc4456ebd80cd060b66c7472023-09-03T11:16:52ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802020-06-011426709671810.15282/jmes.14.2.2020.13.0525Effect of tube shape on the performance of a fin and tube heat exchangerDjamel Sahel 0Houari Ameur 1Mustapha Mellal 2Department of Technical Sciences, University Amar Telidji-Laghouat, Algeria.Department of Technology, University Centre of Naama, Po. Box 66, 45000, Algeria. Faculty of Mechanical Engineering, USTO-MB, Oran, Algeria.A numerical study is carried out to test the effect of tube shape on heat transfer and fluid flow in a finned tube heat exchanger. The effects of different shapes (circular, flat, elliptical and oval in both orientations: left and right) are analyzed. The simulations are carried out for two-dimensional and external flow of an incompressible fluid with Reynolds numbers varying between 3000 and 20000. The results obtained indicate that the shape of the tube directly affects the thermal and dynamic behaviors of a fin and tube heat exchanger. Where the circular tube ensures higher heat transfer coefficient of about 18% than the flat tube, and it generate a moderate pressure drop of about 10% in the same conditions. Also, some reliable empirical correlations are proposed to predict the Nusselt number and the friction factor.https://journal.ump.edu.my/jmes/article/view/2764heat transferfin and tube heat exchangershape of the tubeturbulent flow
spellingShingle Djamel Sahel
Houari Ameur
Mustapha Mellal
Effect of tube shape on the performance of a fin and tube heat exchanger
Journal of Mechanical Engineering and Sciences
heat transfer
fin and tube heat exchanger
shape of the tube
turbulent flow
title Effect of tube shape on the performance of a fin and tube heat exchanger
title_full Effect of tube shape on the performance of a fin and tube heat exchanger
title_fullStr Effect of tube shape on the performance of a fin and tube heat exchanger
title_full_unstemmed Effect of tube shape on the performance of a fin and tube heat exchanger
title_short Effect of tube shape on the performance of a fin and tube heat exchanger
title_sort effect of tube shape on the performance of a fin and tube heat exchanger
topic heat transfer
fin and tube heat exchanger
shape of the tube
turbulent flow
url https://journal.ump.edu.my/jmes/article/view/2764
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