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- EFFECT OF ETHANOL IMMERSION AND ULTRASOUND PRETREATMENTS ON THE KINETICS OF CONVECTIVE DRYING OF QUI...
EFFECT OF ETHANOL IMMERSION AND ULTRASOUND PRETREATMENTS ON THE KINETICS OF CONVECTIVE DRYING OF QUINCE
Authors : Nasim KİAN-POUR
Pages : 1099-1108
Doi:10.15237/gida.GD23082
View : 49 | Download : 71
Publication Date : 2023-10-15
Article Type : Research
Abstract :This work studied the impact of ethanol immersion (E), ultrasound (U), and ultrasound-ethanol immersion (UE) for 10, and 20 min on the drying characteristics of quince. After pretreatments, the samples were dried at a hot dryer at 90℃ and air velocity of 2 m/s. Drying time was reduced by 50% for samples pretreated in Ultrasonic-Ethanol (UE20) for 20 min. Moisture diffusion coefficient varied from 1.880 to 2.933×10-9 m2/s. The friction drag force, convective heat transfer coefficient, and convective mass transfer coefficient were 6.110×10-6 N, 24.077 W/m2K, and 0.020 m/s, respectively. The thermal conductivity, the specific heat, and the density of quince samples ranged from 0.5278 to 0.5876 W/m. K, 3554.00 to 3908.00 J/kg. K, and 814.95 to 904.60 kg/m3, respectively. Among all pretreatments, UE20 could prefer for significant decreases in the drying time and improve drying characteristics of quince at the industrial extent.Keywords : Etanole daldırma, ultrason, ön işlem, kurutma kinetiği, difüzyon katsayısı, ayva