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Verification of heat transfer enhancement in tube with spiral corrugation

Demand of high performance heat exchanger in industrial application is increasing since the depletion of energy resources such as in food processing plant, air-conditioning system and power plant. One of the ways of saving energy is by enhancing heat transfer performance, which in return will give a...

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Main Authors:	Nadila, N. I., Lazim, T. M., Mat, S.
Format:	Conference or Workshop Item
Language:	English
Published:	2019
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/89128/1/NurulIzzwaNadila2019_VerificationofHeatTransferEnhancement.pdf http://eprints.utm.my/id/eprint/89128/ https://dx.doi.org/10.1063/1.5086579
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spelling	my.utm.891282021-01-26T08:44:53Z http://eprints.utm.my/id/eprint/89128/ Verification of heat transfer enhancement in tube with spiral corrugation Nadila, N. I. Lazim, T. M. Mat, S. TJ Mechanical engineering and machinery Demand of high performance heat exchanger in industrial application is increasing since the depletion of energy resources such as in food processing plant, air-conditioning system and power plant. One of the ways of saving energy is by enhancing heat transfer performance, which in return will give a high performance heat exchanger. Existing enhancing techniques can be classified into three different categories which are active method, passive method and compound method. Spirally corrugated tube is one of the passive heat transfer enhancement method which involve surface extensions. The type of surface extension used in heat transfer performance will contribute to heat transfer coefficient and pressure drop, and directly affected the heat transfer performance. Traditionally, experimental studies were carried out to get the desired results but with the help of technology, numerical simulation is one of the promising alternatives in predicting reliable results for real application. For reliable numerical results, experimental studies are still necessary for the validation process and the verification process which comes before it is also mandatory. Thus, this paper focus on verification the numerical simulation of flow in a double-pipe heat exchanger with spirally corrugated internal tube. It was done for laminar flow with Reynolds number of 1000. Numerical simulation model using commercial CFD software were run with different mesh sizes to determine the grid independent solution and to choose which mesh is suitable to use for the whole simulation process. Minimizing and choosing the right mesh were done through Grid Convergence Index (GCI). Solutions of three different grids with their residuals convergence are also presented to fulfil the verification steps. The level of grid independence is evaluated using a form of Richardson extrapolation and the study shows that the finest grid solution has a GCI of less than 5%. 2019 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/89128/1/NurulIzzwaNadila2019_VerificationofHeatTransferEnhancement.pdf Nadila, N. I. and Lazim, T. M. and Mat, S. (2019) Verification of heat transfer enhancement in tube with spiral corrugation. In: 10th International Meeting of Advances in Thermofluids - Smart City: Advances in Thermofluid Technology in Tropical Urban Development, IMAT 2018, 16-18 Nov 2018, Grand Inna Hotel Kuta, Bali, Indonesia. https://dx.doi.org/10.1063/1.5086579
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Nadila, N. I. Lazim, T. M. Mat, S. Verification of heat transfer enhancement in tube with spiral corrugation
description	Demand of high performance heat exchanger in industrial application is increasing since the depletion of energy resources such as in food processing plant, air-conditioning system and power plant. One of the ways of saving energy is by enhancing heat transfer performance, which in return will give a high performance heat exchanger. Existing enhancing techniques can be classified into three different categories which are active method, passive method and compound method. Spirally corrugated tube is one of the passive heat transfer enhancement method which involve surface extensions. The type of surface extension used in heat transfer performance will contribute to heat transfer coefficient and pressure drop, and directly affected the heat transfer performance. Traditionally, experimental studies were carried out to get the desired results but with the help of technology, numerical simulation is one of the promising alternatives in predicting reliable results for real application. For reliable numerical results, experimental studies are still necessary for the validation process and the verification process which comes before it is also mandatory. Thus, this paper focus on verification the numerical simulation of flow in a double-pipe heat exchanger with spirally corrugated internal tube. It was done for laminar flow with Reynolds number of 1000. Numerical simulation model using commercial CFD software were run with different mesh sizes to determine the grid independent solution and to choose which mesh is suitable to use for the whole simulation process. Minimizing and choosing the right mesh were done through Grid Convergence Index (GCI). Solutions of three different grids with their residuals convergence are also presented to fulfil the verification steps. The level of grid independence is evaluated using a form of Richardson extrapolation and the study shows that the finest grid solution has a GCI of less than 5%.
format	Conference or Workshop Item
author	Nadila, N. I. Lazim, T. M. Mat, S.
author_facet	Nadila, N. I. Lazim, T. M. Mat, S.
author_sort	Nadila, N. I.
title	Verification of heat transfer enhancement in tube with spiral corrugation
title_short	Verification of heat transfer enhancement in tube with spiral corrugation
title_full	Verification of heat transfer enhancement in tube with spiral corrugation
title_fullStr	Verification of heat transfer enhancement in tube with spiral corrugation
title_full_unstemmed	Verification of heat transfer enhancement in tube with spiral corrugation
title_sort	verification of heat transfer enhancement in tube with spiral corrugation
publishDate	2019
url	http://eprints.utm.my/id/eprint/89128/1/NurulIzzwaNadila2019_VerificationofHeatTransferEnhancement.pdf http://eprints.utm.my/id/eprint/89128/ https://dx.doi.org/10.1063/1.5086579
_version_	1690370974540627968
score	13.211869

Verification of heat transfer enhancement in tube with spiral corrugation

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