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

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dc.contributor.authorAbuşka, Mesut
dc.contributor.authorŞefik, Seyfi
dc.contributor.authorÖzdilli, Özgür
dc.date.accessioned2023-05-30T11:40:04Z
dc.date.available2023-05-30T11:40:04Z
dc.date.issued2023en_US
dc.departmentHitit Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü
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 frontpass 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 ovaltrench 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.
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dc.identifier.citationAbuşka, M., Şevik, S., & Özdilli, Ö. (2023). A comparative experimental performance evaluation of solar air collector having absorber plate with convex oval-trench dimple. Heat and Mass Transfer, 1-24.
dc.identifier.doi10.1007/s00231-023-03377-5
dc.identifier.endpage24en_US
dc.identifier.issn0947-7411
dc.identifier.scopusqualityQ2
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1007/s00231-023-03377-5
dc.identifier.urihttps://hdl.handle.net/11491/8479
dc.identifier.wosWOS:000989376700001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.relation.ispartofHeat and Mass Transfer/Waerme- und Stoffuebertragung
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectHeat transferen_US
dc.titleA comparative experimental performance evaluation of solar air collector having absorber plate with convex oval-trench dimple
dc.typeArticle

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