Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank

The paper presents a theoretical analysis of heat transfer in a heated tube bank, based on the Nusselt number computation as one of the basic dimensionless criteria. To compute the Nusselt number based on the heat transfer coefficient, the reference temperature must be determined. Despite the value...

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Autores principales:	Stanislav Kotšmíd, Zuzana Brodnianská
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heat transfer heat transfer coefficient tube bank forced convection Nusselt number Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ef7ed4164d2240dd95939d6219660370
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spelling	oai:doaj.org-article:ef7ed4164d2240dd95939d62196603702021-11-25T16:31:36ZDetermination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank10.3390/app1122105642076-3417https://doaj.org/article/ef7ed4164d2240dd95939d62196603702021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10564https://doaj.org/toc/2076-3417The paper presents a theoretical analysis of heat transfer in a heated tube bank, based on the Nusselt number computation as one of the basic dimensionless criteria. To compute the Nusselt number based on the heat transfer coefficient, the reference temperature must be determined. Despite the value significance, the quantity has several different formulations, which leads to discrepancies in results. This paper investigates the heat transfer of the inline and staggered tube banks, made up of 20 rows, at a constant tube diameter and longitudinal and transverse pitch. Both laminar and turbulent flows up to <i>Re</i> = 10,000 are considered, and the effect of gravity is included as well. Several locations for the reference temperature are taken into consideration on the basis of the heretofore published research, and the results in terms of the overall Nusselt number are compared with those obtained by the experimental correlations. This paper provides the most suitable variant for a unique reference temperature, in terms of a constant value for all tube angles, and the Reynolds number ranges of 100–1000 and 1000–10,000 which are in good agreement with the most frequently used correlating equations.Stanislav KotšmídZuzana BrodnianskáMDPI AGarticleheat transferheat transfer coefficienttube bankforced convectionNusselt numberTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10564, p 10564 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heat transfer heat transfer coefficient tube bank forced convection Nusselt number Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	heat transfer heat transfer coefficient tube bank forced convection Nusselt number Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Stanislav Kotšmíd Zuzana Brodnianská Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
description	The paper presents a theoretical analysis of heat transfer in a heated tube bank, based on the Nusselt number computation as one of the basic dimensionless criteria. To compute the Nusselt number based on the heat transfer coefficient, the reference temperature must be determined. Despite the value significance, the quantity has several different formulations, which leads to discrepancies in results. This paper investigates the heat transfer of the inline and staggered tube banks, made up of 20 rows, at a constant tube diameter and longitudinal and transverse pitch. Both laminar and turbulent flows up to <i>Re</i> = 10,000 are considered, and the effect of gravity is included as well. Several locations for the reference temperature are taken into consideration on the basis of the heretofore published research, and the results in terms of the overall Nusselt number are compared with those obtained by the experimental correlations. This paper provides the most suitable variant for a unique reference temperature, in terms of a constant value for all tube angles, and the Reynolds number ranges of 100–1000 and 1000–10,000 which are in good agreement with the most frequently used correlating equations.
format	article
author	Stanislav Kotšmíd Zuzana Brodnianská
author_facet	Stanislav Kotšmíd Zuzana Brodnianská
author_sort	Stanislav Kotšmíd
title	Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
title_short	Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
title_full	Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
title_fullStr	Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
title_full_unstemmed	Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank
title_sort	determination of the reference temperature for a convective heat transfer coefficient in a heated tube bank
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ef7ed4164d2240dd95939d6219660370
work_keys_str_mv	AT stanislavkotsmid determinationofthereferencetemperatureforaconvectiveheattransfercoefficientinaheatedtubebank AT zuzanabrodnianska determinationofthereferencetemperatureforaconvectiveheattransfercoefficientinaheatedtubebank
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Determination of the Reference Temperature for a Convective Heat Transfer Coefficient in a Heated Tube Bank

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