A comparative experimental performance evaluation of solar air collector having absorber plate with convex oval-trench dimple

Simple item page
dc.contributor.authorAbuşka M.
dc.contributor.authorŞevik S.
dc.contributor.authorÖzdilli Ö.
dc.date.accessioned2024-07-22T08:02:19Z
dc.date.available2024-07-22T08:02:19Z
dc.date.issued2023
dc.description.abstractThe purpose of this research is to examine how convex oval-trench dimples placed staggered on a solar air collector's absorber improved vortex heat transfer. At air mass flow rates of 0.013, 0.027, and 0.036 kg/s, convex oval-trench dimple absorbers with relative roughness heights, e/D=0.2 and e/D=0.4, as well as a flat plate absorber, were evaluated for back-pass and front-pass applications. The oval-trench dimpled absorber plates in the back-pass and front-pass achieved the maximum energy efficiency of 37.5% and 50.6%, respectively, with e/D=0.4 and 0.036 kg/s. The increase in the number of Nu in e/D=0.4 was 26% and 31% more than that of the flat plate for the examined parameter ranges of back-pass and front-pass, respectively. (e/D=0.4)/(flat plate) and (e/D=0.4)/(e/D=0.2) increased by an average of 28% and 24% in back-pass for (Nuotd /Nu0)/(fotd /f0), respectively. In front-pass, (e/D=0.4)/(flat plate) and (e/D=0.4)/(e/D=0.2) improved by 35% and 25%, respectively. The collector with a relative roughness height of 0.4 has the optimal structure for this examination of collectors with an oval-trench dimple. The results indicated that collectors with convex oval-trench dimples outperform flat plates in terms of surface area expansion and turbulence generation, which boosts thermal efficiency substantially. In addition, when the experiment results were compared, the front-pass implementation outperformed the back-pass approach. As a result, thermal systems may benefit from utilizing the convex oval-trench dimple. Graphical Abstract: [Figure not available: see fulltext.]. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
dc.identifier.DOI-ID10.1007/s00231-023-03377-5
dc.identifier.issn09477411
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11799
dc.language.isoEnglish
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.subjectHeat transfer
dc.subjectPlates (structural components)
dc.subjectSolar absorbers
dc.subjectStructural optimization
dc.subjectAbsorber plates
dc.subjectAir mass flow rate
dc.subjectExperimental performance evaluations
dc.subjectFlat plate
dc.subjectOptimal structures
dc.subjectParameter range
dc.subjectRoughness height
dc.subjectSolar air collector
dc.subjectSurface area
dc.subjectVortex heat transfer
dc.subjectEnergy efficiency
dc.titleA comparative experimental performance evaluation of solar air collector having absorber plate with convex oval-trench dimple
dc.typeArticle

Files

Collections

Scopus Koleksiyonu