Numerical and experimental determination of wavy fintube shape factor

This paper presents the numerical and experimental investigations of a wavy fin-tube heat exchanger aimed at correctly accounting for all factors influencing the thermal performance of the exchanger. The shape factor for the complex heat conduction path in the wavy fin is determined by using computa...

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Main Authors: Hing, Y.K., Chin, W.M., Heikal, M.R.
Format: Article
Published: Universiti Malaysia Pahang 2014
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945976292&doi=10.15282%2fjmes.6.2014.15.0085&partnerID=40&md5=39b213f9d0b45a4d0298e66142351396
http://eprints.utp.edu.my/31731/
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spelling my.utp.eprints.317312022-03-29T03:36:08Z Numerical and experimental determination of wavy fintube shape factor Hing, Y.K. Chin, W.M. Heikal, M.R. This paper presents the numerical and experimental investigations of a wavy fin-tube heat exchanger aimed at correctly accounting for all factors influencing the thermal performance of the exchanger. The shape factor for the complex heat conduction path in the wavy fin is determined by using computational analysis and validated experimentally by utilizing electrical analogy to obtain the electric resistance across the fin. This is used to back-calculate the conduction shape factor. In the experimental study, the potential difference, V and current, I, was measured using a high precision data acquisition unit. The results were used to calculate the shape resistance which was compared with that obtained from the numerical model. Grid independence tests were performed on the model and several analytically derived standard shape factor formulae were also used for comparison with the model outputs. The deviation of the numerical results from the analytical formulae for the cases studied was less than +1.2. The agreement between the experiments and the numerical model was within +3.5. The results demonstrated the adequacy of the numerical approach to modeling the wavy fintube heat transfer. Effects such as differences in fin shape, fin length and waviness of the fin design on the shape factor were determined and discussed. © Universiti Malaysia Pahang, Malaysia. Universiti Malaysia Pahang 2014 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945976292&doi=10.15282%2fjmes.6.2014.15.0085&partnerID=40&md5=39b213f9d0b45a4d0298e66142351396 Hing, Y.K. and Chin, W.M. and Heikal, M.R. (2014) Numerical and experimental determination of wavy fintube shape factor. Journal of Mechanical Engineering and Sciences, 6 . pp. 889-900. http://eprints.utp.edu.my/31731/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description This paper presents the numerical and experimental investigations of a wavy fin-tube heat exchanger aimed at correctly accounting for all factors influencing the thermal performance of the exchanger. The shape factor for the complex heat conduction path in the wavy fin is determined by using computational analysis and validated experimentally by utilizing electrical analogy to obtain the electric resistance across the fin. This is used to back-calculate the conduction shape factor. In the experimental study, the potential difference, V and current, I, was measured using a high precision data acquisition unit. The results were used to calculate the shape resistance which was compared with that obtained from the numerical model. Grid independence tests were performed on the model and several analytically derived standard shape factor formulae were also used for comparison with the model outputs. The deviation of the numerical results from the analytical formulae for the cases studied was less than +1.2. The agreement between the experiments and the numerical model was within +3.5. The results demonstrated the adequacy of the numerical approach to modeling the wavy fintube heat transfer. Effects such as differences in fin shape, fin length and waviness of the fin design on the shape factor were determined and discussed. © Universiti Malaysia Pahang, Malaysia.
format Article
author Hing, Y.K.
Chin, W.M.
Heikal, M.R.
spellingShingle Hing, Y.K.
Chin, W.M.
Heikal, M.R.
Numerical and experimental determination of wavy fintube shape factor
author_facet Hing, Y.K.
Chin, W.M.
Heikal, M.R.
author_sort Hing, Y.K.
title Numerical and experimental determination of wavy fintube shape factor
title_short Numerical and experimental determination of wavy fintube shape factor
title_full Numerical and experimental determination of wavy fintube shape factor
title_fullStr Numerical and experimental determination of wavy fintube shape factor
title_full_unstemmed Numerical and experimental determination of wavy fintube shape factor
title_sort numerical and experimental determination of wavy fintube shape factor
publisher Universiti Malaysia Pahang
publishDate 2014
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945976292&doi=10.15282%2fjmes.6.2014.15.0085&partnerID=40&md5=39b213f9d0b45a4d0298e66142351396
http://eprints.utp.edu.my/31731/
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score 13.211869