Moisture transfer models for slabs drying |
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| Affiliation: | 1. Mechanical Engineering Department, Firat University, Elazig, Turkey;2. School of Manufacturing Engineering, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario, Canada L1H 7K4;1. Laboratoire de Physique des Gaz et des Plasmas, CNRS-Université Paris-Sud, 91405 Orsay, France;2. Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden;3. Service des Photons, Atomes et Molécules, CEA Saclay, 91191 Gif-sur-Yvette, France;1. University of La Rochelle, Laboratory of Engineering Science for Environment LaSIE UMR 7356 CNRS, La Rochelle, France;2. Materials and Renewable Energies Research Unit, Faculty of Sciences, University of Abou Bekr Belkaid-Tlemcen, BP: 119 Tlemcen, 13000, Algeria;3. Unité de Recherche Appliquée en Energies Renouvelables, URAER, Centre de Développement des Energies Renouvelables, CDER, 47133, Ghardaïa, Algeria;4. Laboratory of Nutrition and Food Technology (LNTA: Laboratoire de Nutrition et de Technologie Alimentaire), Institut de la Nutrition, de l’Alimentation et des Technologies Agro-alimentaires (I.N.A.T.A-A) Université Mentouri Constantine, 1-Algérie, Algeria;1. Centre for Disaster Mitigation and Management, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India;2. School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India;3. Research Centre for Nano-Materials and Energy Technology (RCNMET) Level 3, School of Engineering and Technology, Sunway University No. 5, Jalan Universiti, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia;4. Institute of Energy Engineering, Dhaka University of Engineering & Technology, Gazipur 1707, Bangladesh;1. Equipe de Matériaux et Energies Renouvelables, LP2MS, URAC08, Faculté des Sciences, UMI, B.P 11201, Zitoune, Meknès, Morocco;2. Equipe de l’Energie Solaire et Plantes Aromatiques et Médicinales, Ecole Normale Supérieure, UCAM, B.P 2400, Marrakech, Morocco;3. ICARE, CNRS – 1C avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France;4. LM2PI, ENSET, UM5, Avenue de l’Armée Royale, Madinat Al Irfane, B.P 6207 Rabat, Morocco;5. Equipe de Matériaux et Catalyse Appliqués, Faculté des Sciences, UMI, B.P 11201 Zitoune, Meknès, Morocco;6. Equipe Chimie Moléculaires et Molécules Bioactives, Faculté des Sciences, UMI, B.P 11201 Zitoune, Meknès, Morocco |
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| Abstract: | This paper deals with an experimental and theoretical investigation of drying of moist slabs. Experimental part includes the measurement of the moisture content distributions of eggplant slices with 5 mm thickness and 35 mm diameter during drying at the temperatures of 55 °C, 65 °C, and 75 °C and the velocities of 1.0 and 1.5 m/s, respectively. Four drying models are used to determine drying process parameters (e.g., drying coefficient, lag factor, and half-drying time) and moisture transfer parameters (e.g., moisture diffusivity and moisture transfer coefficient), and to calculate moisture content distributions. The calculated values are then compared with the experimental moisture data during the drying of eggplant slices at different drying air temperatures and flow velocities. An excellent agreement is obtained between the calculations and experimental measurements for the cases considered. Also, the experimental drying times are determined and compared with the ones obtained through four different drying models. The results show that all four models are capable of estimating the drying parameters and moisture content distributions. The experimental drying data and model findings are expected to be useful to drying industry. |
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