Drying of Sultana seedless (Vitis vinifera L.) grape variety in indirect drying chamber using solar air collector with conic dimpled absorber: The case of end-season drying

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dc.contributor.authorÇoban H.
dc.contributor.authorAbuşka M.
dc.date.accessioned2024-07-22T08:02:12Z
dc.date.available2024-07-22T08:02:12Z
dc.date.issued2024
dc.description.abstractThe main functions of mechanical drying are to extend the drying season, prevent reduction in dry product mass due to immature harvest, and obtain high-quality products without exposure to rainy weather conditions. A SAC with a conic dimpled absorber-assisted indirect solar dryer was designed, manufactured, and tested for the Sultana Seedless grapes under the end-season conditions. Also, the effect of medicinal chamomile oils on the color quality of raisins was investigated. While the first three days of the drying experiment were reminiscent of summer, the remaining days were characteristic of autumn. The thermal efficiency of the collector at a flow rate of 0.05 kg/s was realized as 66.33 % and 48.27 % on average during the days (between hours of 10:00–15:00), depending on the psychrometric conditions. The moisture content of the grapes (22.5 brix) decreased from 3.37 to 0.22 kgw/kgsm and lasted for 272 h/12 days. It has been revealed that the collector efficiency and drying time were significantly affected by the psychrometric conditions, and the use of medicinal chamomile oil in dipping pretreatment increased the color quality of raisins. Effective use of the SAC in the end-season drying process should be increased by techniques such as serial connection and heat storage. © 2023 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.renene.2023.119615
dc.identifier.issn09601481
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11764
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectCollector efficiency
dc.subjectHeat storage
dc.subjectSolar dryers
dc.subjectColor quality
dc.subjectCondition
dc.subjectConic-dimpled absorber
dc.subjectEnd-season drying
dc.subjectGrape variety
dc.subjectIndirect solar dryer
dc.subjectMedicinal chamomile oil
dc.subjectPsychrometric conditions
dc.subjectRaisin
dc.subjectVitis vinifera
dc.subjectautumn
dc.subjectcolor
dc.subjectfruit
dc.subjectmoisture content
dc.subjectsolar power
dc.subjectweather
dc.subjectDrying
dc.titleDrying of Sultana seedless (Vitis vinifera L.) grape variety in indirect drying chamber using solar air collector with conic dimpled absorber: The case of end-season drying
dc.typeArticle

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