Experimental investigation and modeling of date drying under forced convection solar dryers

Article


Seerangurayar, T., Al-Ismaili, Abdulrahim M., Jeewantha, L. H. Janitha, Jeevarathinam, G., Pandiselvam, R., Kumar, S. Dinesh, Mohanraj, M. and Singh, Punit. 2023. "Experimental investigation and modeling of date drying under forced convection solar dryers." Biomass Conversion and Biorefinery. https://doi.org/10.1007/s13399-023-04450-z
Article Title

Experimental investigation and modeling of date drying under forced convection solar dryers

ERA Journal ID211884
Article CategoryArticle
AuthorsSeerangurayar, T., Al-Ismaili, Abdulrahim M., Jeewantha, L. H. Janitha, Jeevarathinam, G., Pandiselvam, R., Kumar, S. Dinesh, Mohanraj, M. and Singh, Punit
Journal TitleBiomass Conversion and Biorefinery
Year2023
PublisherSpringer
Place of PublicationGermany
ISSN2190-6815
2190-6823
Digital Object Identifier (DOI)https://doi.org/10.1007/s13399-023-04450-z
Web Address (URL)https://link.springer.com/article/10.1007/s13399-023-04450-z
AbstractThis paper presents the drying behavior of fresh dates at three ripeness stages (khalal, rutab, and tamr) in three drying techniques, namely, direct sun drying (DSD), greenhouse-like solar drying (GSD), and indirect convective solar drying (ISD) and validated with drying models. The experimental data was fitted to 11 thin-layer drying models to identify the best model to describe the drying behavior of the dates in the three solar drying methods. The results showed that using DSD, the safe moisture level of 35% on dry basis was reached in 86 h for khalal, 103 h for rutab, and 103 h for tamr. However, GSD has the faster drying rate, reaching the final moisture content in 53 h for khalal, 64 h for rutab, and 61 h for tamr, compared to 75 h, 70 h, and 70 h in ISD for the respective stages of ripeness. The Midilli and Kucuk, Diffusion approach, Logarithmic, Two-term, and Verma models were found to be the most suitable for representing the drying process of fresh dates.
KeywordsDates drying; Direct sun drying; Greenhouse-like solar dryer; Indirect convective solar dryer; Drying characteristics
ANZSRC Field of Research 2020401609. Polymers and plastics
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Byline AffiliationsSultan Qaboos University, Oman
Hindusthan College of Engineering and Technology, India
Centre for Future Materials
Central Plantation Crops Research Institute, India
GLA University, India
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