Reducing Heat Loss From Solar Hot Water Storage Tanks Using Passive Baffles

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aut.filerelease.date2024-08-01
aut.relation.articlenumber104807en_NZ
aut.relation.endpage104807
aut.relation.journalJournal of Energy Storageen_NZ
aut.relation.startpage104807
aut.relation.volume52en_NZ
aut.researcherAnderson, Timothy
dc.contributor.authorPaing, STen_NZ
dc.contributor.authorAnderson, TNen_NZ
dc.contributor.authorNates, RJen_NZ
dc.date.accessioned2022-05-12T03:55:43Z
dc.date.available2022-05-12T03:55:43Z
dc.date.copyright2022-08en_NZ
dc.date.issued2022-08en_NZ
dc.description.abstractSolar water heating systems with thermal storage are one of the simplest ways of reducing energy demand for domestic water heating. Over the years, researchers have attempted to improve the thermal performance of storage tanks using various means, including baffle-type devices to control mixing during charging and discharging of the tank. However, one modification that has been overlooked is the use of passive baffles that suppress the natural convection inside the tank with a view to reducing their standing heat loss. Considering this, this study examined the use of concentric vertically mounted baffles on the natural convection inside a vertical cylindrical storage tank. To this end, a numerical model of a tank with a baffle was developed using computational fluid dynamics (CFD) and validated using experimental data. The results showed that a simple concentrically mounted baffle could reduce the natural convection heat transfer coefficient by up to 40%.
dc.identifier.citationJournal of Energy Storage, Volume 52, Part A, 1 August 2022, 104807
dc.identifier.doi10.1016/j.est.2022.104807en_NZ
dc.identifier.issn2352-152Xen_NZ
dc.identifier.urihttps://hdl.handle.net/10292/15130
dc.languageenen_NZ
dc.publisherElsevier BVen_NZ
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S2352152X22008167
dc.rightsCopyright © 2022 Elsevier Ltd. All rights reserved. This is the author’s version of a work that was accepted for publication in (see Citation). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. The definitive version was published in (see Citation). The original publication is available at (see Publisher's Version).
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectThermal storage; Heat loss; Natural convection; Convection suppression
dc.titleReducing Heat Loss From Solar Hot Water Storage Tanks Using Passive Bafflesen_NZ
dc.typeJournal Article
pubs.elements-id454158
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Faculty of Design & Creative Technologies
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