Effect of new design of elongated jet hole on thermal efficiency of solar air heater

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dc.authoridTekir, Mutlu/0000-0003-2289-7034
dc.authoridARSLAN, Kamil/0000-0002-1216-6812
dc.contributor.authorPazarlioglu, Hayati Kadir
dc.contributor.authorTepe, Ahmet Umit
dc.contributor.authorTekir, Mutlu
dc.contributor.authorArslan, Kamil
dc.date.accessioned2025-03-23T19:37:42Z
dc.date.available2025-03-23T19:37:42Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractEffect of new design of elongated jet hole on the thermal efficiency (eta th) of a solar air heater (SAH) has been numerically studied in this paper. Jet impingement technique, which is one of the important active techniques, has been implemented on the absorber plate of the SAH surface to increase the convective heat transfer per-formance. Several designs of elongated jet hole (EJH) technique (gradually increasing, gradually decreasing along the crossflow direction, and equally extended), which is highly effective application to get rid of cross-flow, has been inserted to the jet plate. The main interest of this paper is to investigate the effect of different EJH configurations on convective heat transfer performance and eta th of the SAH. 15 x 7 array of jets have been mounted on the confinement plate. Results have been compared with the conventional SAH, which has the jet impingement Case1. Numerical computations have been conducted using RNG k -epsilon turbulence model. Average Nusselt number (Nu) on the absorber plate surface, eta th of the SAH, and performance evaluation criteria (PEC) have been quantitatively investigated comprehensively. As a result of calculations, the Nu and eta th of SAH can be enhanced by 31.80 % and 2.46 %, respectively, using Case4 instead of Case1 at Re = 25000. Besides, the pressure drop of SAH dramatically rises by 10.26 %, when Case4 and Case1 compared with each other at Re = 25000. Despite increment in pressure drop, the PEC value achieves to 1.28. Finally, it is concluded that the equally extended EJH presents well performance compared to gradually increasing and decreasing EJH.
dc.identifier.doi10.1016/j.tsep.2022.101483
dc.identifier.issn2451-9049
dc.identifier.scopus2-s2.0-85139337926
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.tsep.2022.101483
dc.identifier.urihttps://hdl.handle.net/11486/5986
dc.identifier.volume36
dc.identifier.wosWOS:000867654600002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofThermal Science and Engineering Progress
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectSolar air heater
dc.subjectImpinging jet
dc.subjectNozzle
dc.subjectCFD
dc.subjectConvective heat transfer
dc.subjectThermal efficiency
dc.titleEffect of new design of elongated jet hole on thermal efficiency of solar air heater
dc.typeArticle

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