Hydrodynamics investigation of pepper drying in a swirling fluidized bed dryer with multiple-group twisted tape swirl generators

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dc.contributor.authorChuwattanakul, V.
dc.contributor.authorEiamsa-Ard, S.
dc.date.accessioned2026-08-06T10:24:15Z
dc.date.available2026-08-06T10:24:15Z
dc.date.issued2019-03-01
dc.description.abstractThe present work aims to investigation the behavior of drying peppers in a swirling fluidized bed dryer (S-FBD) fitted with multiple twisted tape swirl generators. A multiple-group twisted tape swirl generator was located at the air inlet at the bottom of the bed. The effects of the superficial air velocity (U∗=U/U <inf>mf</inf> = 1.0, 1.1 and 1.2) on the moisture content (MC), moisture content ratio (MR) and drying rate (DR) were examined. The experimental results showed that the S-FBD can reduce the moisture content of peppers more rapidly than a conventional fluidized bed dryer (FBD). The S-FBD gave a higher DR and decreased drying time compared to that of a FBD. The results also indicated that operation at higher superficial air velocities resulted in a greater DR, especially at the beginning stage of the drying process. For the S-FBD, the reduced of MC, MR and DR at a high superficial air velocity (U∗=U/U <inf>mf</inf> = 1.2) was better than at low superficial air velocities (U∗= 1.0 and 1.1). Furthermore, five different drying models were evaluated to predict the performance of the S-FBD.
dc.identifier.citationCase Studies in Thermal Engineering, 13, 2019
dc.identifier.doi10.1016/j.csite.2018.100389
dc.identifier.issn2214157X
dc.identifier.other2-s2.0-85060085783
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/9771
dc.sourceCase Studies in Thermal Engineering
dc.subjectConventional fluidized bed dryer (FBD)
dc.subjectDrying
dc.subjectDrying rate (DR)
dc.subjectPepper
dc.subjectSwirl flow
dc.subjectSwirling fluidized bed dryer (S-FBD)
dc.titleHydrodynamics investigation of pepper drying in a swirling fluidized bed dryer with multiple-group twisted tape swirl generators
dc.typeArticle

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