Impact of Tube Bundle Placement on the Thermal Charging of a Latent Heat Storage Unit

Ghalambaz, M; Eisapour, AH; Mohammed, HI; Islam, MS; Younis, O; Sardari, PT; Yaïci, W

Impact of Tube Bundle Placement on the Thermal Charging of a Latent Heat Storage Unit

Ghalambaz, M Eisapour, AH Mohammed, HI Islam, MS Younis, O Sardari, PT Yaïci, W

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Publisher:: MDPI AG
Publication Type:: Journal Article
Citation:: Energies, 2021, 14, (5), pp. 1289-1289
Issue Date:: 2021-02-26

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Field	Value	Language
dc.contributor.author	Ghalambaz, M
dc.contributor.author	Eisapour, AH
dc.contributor.author	Mohammed, HI
dc.contributor.author	Islam, MS
dc.contributor.author	Younis, O
dc.contributor.author	Sardari, PT
dc.contributor.author	Yaïci, W
dc.date.accessioned	2021-03-05T04:36:48Z
dc.date.available	2021-03-05T04:36:48Z
dc.date.issued	2021-02-26
dc.identifier.citation	Energies, 2021, 14, (5), pp. 1289-1289
dc.identifier.issn	1996-1073
dc.identifier.issn	1996-1073
dc.identifier.uri	http://hdl.handle.net/10453/146815
dc.description.abstract	<jats:p>The melting process of a multi-tube’s thermal energy storage system in the existence of free convection effects is a non-linear and important problem. The placement of heated tubes could change the convective thermal circulation. In the present study, the impact of the position of seven heat exchanger tubes was systematically investigated. The energy charging process was numerically studied utilizing liquid fraction and stored energy with exhaustive temperature outlines. The tubes of heat transfer fluid were presumed in the unit with different locations. The unit’s heat transfer behavior was assessed by studying the liquid fraction graphs, streamlines, and isotherm contours. Each of the design factors was divided into four levels. To better investigate the design space for the accounted five variables and four levels, an L16 orthogonal table was considered. Changing the location of tubes could change the melting rate by 28%. The best melting rate was 94% after four hours of charging. It was found that the tubes with close distance could overheat each other and reduce the total heat transfer. The study of isotherms and streamlines showed the general circulation of natural convection flows at the final stage of melting was the most crucial factor in the melting of top regions of the unit and reduces the charging time. Thus, particular attention to the tubes’ placement should be made so that the phase change material could be quickly melted at both ends of a unit.</jats:p>
dc.language	en
dc.publisher	MDPI AG
dc.relation.ispartof	Energies
dc.relation.isbasedon	10.3390/en14051289
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	02 Physical Sciences, 09 Engineering
dc.title	Impact of Tube Bundle Placement on the Thermal Charging of a Latent Heat Storage Unit
dc.type	Journal Article
utslib.citation.volume	14
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
dc.date.updated	2021-03-05T04:36:34Z
pubs.issue	5
pubs.publication-status	Published online
pubs.volume	14
utslib.citation.issue	5

Abstract:

The melting process of a multi-tube’s thermal energy storage system in the existence of free convection effects is a non-linear and important problem. The placement of heated tubes could change the convective thermal circulation. In the present study, the impact of the position of seven heat exchanger tubes was systematically investigated. The energy charging process was numerically studied utilizing liquid fraction and stored energy with exhaustive temperature outlines. The tubes of heat transfer fluid were presumed in the unit with different locations. The unit’s heat transfer behavior was assessed by studying the liquid fraction graphs, streamlines, and isotherm contours. Each of the design factors was divided into four levels. To better investigate the design space for the accounted five variables and four levels, an L16 orthogonal table was considered. Changing the location of tubes could change the melting rate by 28%. The best melting rate was 94% after four hours of charging. It was found that the tubes with close distance could overheat each other and reduce the total heat transfer. The study of isotherms and streamlines showed the general circulation of natural convection flows at the final stage of melting was the most crucial factor in the melting of top regions of the unit and reduces the charging time. Thus, particular attention to the tubes’ placement should be made so that the phase change material could be quickly melted at both ends of a unit.

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http://hdl.handle.net/10453/146815