Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition

Heat enhancement and heat removal remain important topics in engineering. Furthermore, flow in a laminar regime can reduce the cost of cooling. In the present study, flow in mini channels in a rectangular cavity is investigated with water as a circulating fluid. The height of the channel in the cavi...

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Autores principales:	M. Z. Saghir, Z. Alhajaj
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	mini channels height forced convection finite element experimental comparison Technology T
Acceso en línea:	https://doaj.org/article/be101fec5105408d9b32167bba46b78e
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spelling	oai:doaj.org-article:be101fec5105408d9b32167bba46b78e2021-11-11T15:50:23ZOptimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition10.3390/en142170201996-1073https://doaj.org/article/be101fec5105408d9b32167bba46b78e2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7020https://doaj.org/toc/1996-1073Heat enhancement and heat removal remain important topics in engineering. Furthermore, flow in a laminar regime can reduce the cost of cooling. In the present study, flow in mini channels in a rectangular cavity is investigated with water as a circulating fluid. The height of the channel in the cavity is varied and interaction of the free flow above the channel with flow through the channel has been investigated. It is shown that a combination of these two flows can provide the optimum heat removal at a Reynolds number of 750. This finding is valid if one ignores the friction effect to the wall. The best configuration is for an aspect ratio AR = 6. If the pressure drop is taken into consideration, then the performance evaluation criterion shows that the mini-channel with aspect ratio AR = 12 is the best configuration. Different correlations have been obtained between the Nusselt number, pressure drop, friction factor, performance evaluation criterion, and the Reynolds number and the height of the channels.M. Z. SaghirZ. AlhajajMDPI AGarticlemini channelsheightforced convectionfinite elementexperimental comparisonTechnologyTENEnergies, Vol 14, Iss 7020, p 7020 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mini channels height forced convection finite element experimental comparison Technology T
spellingShingle	mini channels height forced convection finite element experimental comparison Technology T M. Z. Saghir Z. Alhajaj Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
description	Heat enhancement and heat removal remain important topics in engineering. Furthermore, flow in a laminar regime can reduce the cost of cooling. In the present study, flow in mini channels in a rectangular cavity is investigated with water as a circulating fluid. The height of the channel in the cavity is varied and interaction of the free flow above the channel with flow through the channel has been investigated. It is shown that a combination of these two flows can provide the optimum heat removal at a Reynolds number of 750. This finding is valid if one ignores the friction effect to the wall. The best configuration is for an aspect ratio AR = 6. If the pressure drop is taken into consideration, then the performance evaluation criterion shows that the mini-channel with aspect ratio AR = 12 is the best configuration. Different correlations have been obtained between the Nusselt number, pressure drop, friction factor, performance evaluation criterion, and the Reynolds number and the height of the channels.
format	article
author	M. Z. Saghir Z. Alhajaj
author_facet	M. Z. Saghir Z. Alhajaj
author_sort	M. Z. Saghir
title	Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
title_short	Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
title_full	Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
title_fullStr	Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
title_full_unstemmed	Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition
title_sort	optimum multi-mini-channels height for heat enhancement under forced convection condition
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/be101fec5105408d9b32167bba46b78e
work_keys_str_mv	AT mzsaghir optimummultiminichannelsheightforheatenhancementunderforcedconvectioncondition AT zalhajaj optimummultiminichannelsheightforheatenhancementunderforcedconvectioncondition
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Optimum Multi-Mini-Channels Height for Heat Enhancement under Forced Convection Condition

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