Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis

In this work, an experimental analysis is made to predict the thermal performance of the natural-convection phenomenon from a heated vertical externally finned-tube to surrounding air through an open-ended enclosure. Two different configurations of longitudinal rectangular fin namely, contin...

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Autor principal:	Saad Najeeb Shehab
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2019
Materias:	Vertical tube, continuous, interrupted, finned, natural-convection. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/60d786039a5e4631aa5379d7c2dc9fc8
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spelling	oai:doaj.org-article:60d786039a5e4631aa5379d7c2dc9fc82021-12-02T04:33:55ZNatural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis10.22153/kej.2017.05.0041818-11712312-0789https://doaj.org/article/60d786039a5e4631aa5379d7c2dc9fc82019-03-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/408https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 In this work, an experimental analysis is made to predict the thermal performance of the natural-convection phenomenon from a heated vertical externally finned-tube to surrounding air through an open-ended enclosure. Two different configurations of longitudinal rectangular fin namely, continuous and interrupted are utilized with constant thickness, different numbers, and different heights are extended radially on the outer surface of a heated tube. The tube is heated electrically from inner surface with five varied power input magnitudes. The effect of fins configuration, fins number, fins height, and heat flux of the inner tube surface on the thermal performance of natural convection have been studied and analyzed experimentally. Obtained results show that the tube with twelve interrupted longitudinal fins gives the best natural-convection thermal performance in terms of average Nusselt number, about 20% greater than that for the tube with continuous fins. Experimental correlations to predict the average Nusselt number for the heated tubes with continuous and interrupted longitudinal fins are proposed. The present data are compared to previous study and good convergence is noticed. Saad Najeeb ShehabAl-Khwarizmi College of Engineering – University of BaghdadarticleVertical tube, continuous, interrupted, finned, natural-convection.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 13, Iss 4 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Vertical tube, continuous, interrupted, finned, natural-convection. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Vertical tube, continuous, interrupted, finned, natural-convection. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Saad Najeeb Shehab Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
description	In this work, an experimental analysis is made to predict the thermal performance of the natural-convection phenomenon from a heated vertical externally finned-tube to surrounding air through an open-ended enclosure. Two different configurations of longitudinal rectangular fin namely, continuous and interrupted are utilized with constant thickness, different numbers, and different heights are extended radially on the outer surface of a heated tube. The tube is heated electrically from inner surface with five varied power input magnitudes. The effect of fins configuration, fins number, fins height, and heat flux of the inner tube surface on the thermal performance of natural convection have been studied and analyzed experimentally. Obtained results show that the tube with twelve interrupted longitudinal fins gives the best natural-convection thermal performance in terms of average Nusselt number, about 20% greater than that for the tube with continuous fins. Experimental correlations to predict the average Nusselt number for the heated tubes with continuous and interrupted longitudinal fins are proposed. The present data are compared to previous study and good convergence is noticed.
format	article
author	Saad Najeeb Shehab
author_facet	Saad Najeeb Shehab
author_sort	Saad Najeeb Shehab
title	Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
title_short	Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
title_full	Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
title_fullStr	Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
title_full_unstemmed	Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis
title_sort	natural-convection phenomenon from a finned heated vertical tube: experimental analysis
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2019
url	https://doaj.org/article/60d786039a5e4631aa5379d7c2dc9fc8
work_keys_str_mv	AT saadnajeebshehab naturalconvectionphenomenonfromafinnedheatedverticaltubeexperimentalanalysis
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Natural-Convection Phenomenon from a Finned Heated Vertical Tube: Experimental Analysis

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