Effects of hot air temperature on moisture reduction and drying time of turmeric in a closed-system herb dryer: kinetics and models

Simple item page
dc.contributor.authorChindaruksa, Sirinuch
dc.contributor.authorBongkaew, Haruethai
dc.contributor.authorWardkein, Paramote
dc.contributor.authorChantrawongphisal, Borisut
dc.date.accessioned2026-08-06T10:42:40Z
dc.date.available2026-08-06T10:42:40Z
dc.date.issued2023-11-01
dc.description.abstractThe primary objective of this research was to devise a model focused on the drying kinetics of turmeric, utilizing a closed-system herb dryer to facilitate energy conservation. Drying turmeric within this closed-system herb dryer involves a heat source—specifically, an electric coil heater powered at 3500 W and a humidity controller. The drying condition includes an air volume of 0.039 kg/s, the temperature at 40, 50, and 60 °C with initial moisture of the turmeric at 667.53 %db. The result of drying turmeric was analyzed using a thin-layer drying model for 8 models: Newton, Page, Logistic, Henderson and Pabis, Logarithmic, Two-Term, Approximation of Diffusion, Midill et al. The result shows that Midill et al. equation was the best model for predicting the drying behavior of turmeric. Therefore, this insinuates that the Midill model is superior to its contemporaneous counterparts in terms of accuracy. It offered the highest coefficient of determination R <sup>2</sup> (0.9998, 0.9996, 0.9999), the most root mean square error (RMSE) (3.39×10<sup>−9</sup>, 2.37×10<sup>−5</sup>, 3.10×10<sup>−5</sup>), the last chi-square χ <sup>2</sup> (3.39×10<sup>−9</sup>, 2.85×10<sup>−5</sup>, 3.99×10<sup>−5</sup>), and a temperature of 40, 50, and 60 °C, respectively. The study revealed that implementing a closed-system herb dryer could potentially manufacture high-value commodities while preserving their fundamental attributes. The closed-system herb dryer has been ingeniously designed as a proficient approach to diminish the drying time and improve the end product’s quality.
dc.identifier.citationBiomass Conversion and Biorefinery, 13(17), 16263-16272, 2023
dc.identifier.doi10.1007/s13399-023-04665-0
dc.identifier.issn21906815
dc.identifier.other2-s2.0-85168082318
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/14725
dc.sourceBiomass Conversion and Biorefinery
dc.subjectClosed-system herb dryer
dc.subjectEnergy saving
dc.subjectKinetics
dc.subjectThin-layer drying model
dc.subjectTurmeric
dc.titleEffects of hot air temperature on moisture reduction and drying time of turmeric in a closed-system herb dryer: kinetics and models
dc.typeArticle

Files

Collections

Research