A review on heat transfer enhancement techniques during natural convection in vertical annular geometry

Heat transfer enhancement caught the attention of researchers owing to the need for compact size heat exchangers. This is because of the development of micro-devices due to advancements in electronics. The heat transfer through natural convection in vertical annular geometry has many benefits and, i...

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Autores principales:	Shahid Husain, Suhail Ahmad Khan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Natural convection Thermal performance Vertical annulus Applications Optimization Renewable energy sources TJ807-830 Environmental engineering TA170-171
Acceso en línea:	https://doaj.org/article/30bfff44617449bab74204135e7ee165
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spelling	oai:doaj.org-article:30bfff44617449bab74204135e7ee1652021-11-12T04:49:00ZA review on heat transfer enhancement techniques during natural convection in vertical annular geometry2666-790810.1016/j.clet.2021.100333https://doaj.org/article/30bfff44617449bab74204135e7ee1652021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666790821002937https://doaj.org/toc/2666-7908Heat transfer enhancement caught the attention of researchers owing to the need for compact size heat exchangers. This is because of the development of micro-devices due to advancements in electronics. The heat transfer through natural convection in vertical annular geometry has many benefits and, if designed efficiently, will result in energy saving due to no/less moving parts. This paper reports the review of techniques used by researchers for heat transfer enhancement during natural convection flow in vertical annular geometry. Several techniques that have a significant impact on the design and performance are discussed here in detail viz. use of nanofluids, use of the magnetic field, use of cylinder wall rotation, use of discrete wall heating, use of porous material, use of boiling, use of rings, etc. The implementation of each technique along with its advantages and drawbacks are also discussed. The authors also suggested their recommendation of techniques to be used for heat transfer enhancement. The study highlights research gaps and weak points that have not received the researchers' attention so far. This article outlines areas that needed the most attention in the future.Shahid HusainSuhail Ahmad KhanElsevierarticleNatural convectionThermal performanceVertical annulusApplicationsOptimizationRenewable energy sourcesTJ807-830Environmental engineeringTA170-171ENCleaner Engineering and Technology, Vol 5, Iss , Pp 100333- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Natural convection Thermal performance Vertical annulus Applications Optimization Renewable energy sources TJ807-830 Environmental engineering TA170-171
spellingShingle	Natural convection Thermal performance Vertical annulus Applications Optimization Renewable energy sources TJ807-830 Environmental engineering TA170-171 Shahid Husain Suhail Ahmad Khan A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
description	Heat transfer enhancement caught the attention of researchers owing to the need for compact size heat exchangers. This is because of the development of micro-devices due to advancements in electronics. The heat transfer through natural convection in vertical annular geometry has many benefits and, if designed efficiently, will result in energy saving due to no/less moving parts. This paper reports the review of techniques used by researchers for heat transfer enhancement during natural convection flow in vertical annular geometry. Several techniques that have a significant impact on the design and performance are discussed here in detail viz. use of nanofluids, use of the magnetic field, use of cylinder wall rotation, use of discrete wall heating, use of porous material, use of boiling, use of rings, etc. The implementation of each technique along with its advantages and drawbacks are also discussed. The authors also suggested their recommendation of techniques to be used for heat transfer enhancement. The study highlights research gaps and weak points that have not received the researchers' attention so far. This article outlines areas that needed the most attention in the future.
format	article
author	Shahid Husain Suhail Ahmad Khan
author_facet	Shahid Husain Suhail Ahmad Khan
author_sort	Shahid Husain
title	A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
title_short	A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
title_full	A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
title_fullStr	A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
title_full_unstemmed	A review on heat transfer enhancement techniques during natural convection in vertical annular geometry
title_sort	review on heat transfer enhancement techniques during natural convection in vertical annular geometry
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/30bfff44617449bab74204135e7ee165
work_keys_str_mv	AT shahidhusain areviewonheattransferenhancementtechniquesduringnaturalconvectioninverticalannulargeometry AT suhailahmadkhan areviewonheattransferenhancementtechniquesduringnaturalconvectioninverticalannulargeometry AT shahidhusain reviewonheattransferenhancementtechniquesduringnaturalconvectioninverticalannulargeometry AT suhailahmadkhan reviewonheattransferenhancementtechniquesduringnaturalconvectioninverticalannulargeometry
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A review on heat transfer enhancement techniques during natural convection in vertical annular geometry

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