Exploring drying kinetics and energy exergy performance of Mytilus Chilensis and Dosidicus gigas undergoing microwave tr
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ORIGINAL
Exploring drying kinetics and energy exergy performance of Mytilus Chilensis and Dosidicus gigas undergoing microwave treatment Mounir Kouhila 1 & Haytem Moussaoui 1 & Younes Bahammou 1 & Zakaria Tagnamas 1 & Hamza Lamsyehe 1 & Abdelkader Lamharrar 1 & Ali Idlimam 1 Received: 21 January 2020 / Accepted: 30 June 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Drying kinetics of food materials treated under microwave irradiation is a crucial process to predict moisture content, design, and optimize the drying characteristics. In this study, the performance energy and exergy of two products of Dosidicus gigas and Mytilus Chilensis were analyzed undergoing microwave treatment. Basically fitting of five well-known empirical models was tested for the two types of seafood. Statistical and empirical modeling of the drying curves revealed that the Page model was the most suitable to fit the drying experimental curves of Mytilus and Dosidicus gigas. Various microwave power outputs at (90,160,360, 600, and 750 W) were tested to evaluate their influence on drying kinetics and moisture diffusivity of seafood samples. Specific energy consumption varied from 1.76 to 11.42 and 5.20 to 11.34 MJ/kg for Dosidicus gigas and Mytilus Chilensis respectively. The best exergy and energy aspect appears to be at 90 W microwave power for the drying products. Also, the improvement potential increased with an increase in microwave power, and its values for both products were ranging from 0.58 to 29.70 kJ/kg water. The effective moisture diffusivity increased as well as the microwave generation increased. The activation energy was determined using Arrhenius Law with values of 9.34 and 9.36 kW/kg for Dosidicus gigas and Mytilus Chilensis respectively. Keywords Activation energy . Drying kinetics . Energy exergy analysis . Food storage . Moisture diffusivity
Abbreviations a,b,c,k,n constants of drying models Cp specific heat capacity (kJ/kg.K) Df degree of the regression model Deff effective moisture diffusivity (m2/s) D0 pre-exponential factor of Arrhenius equation (m2/s) d.b dry basis DR drying rate (% d.b /min) Ea activation energy (kW/kg) Ein energy input (J) Eloss energy loss (J/kg water) Eou energy output (J) Exev specific exergy evaporated (J/kg water) Exi specific exergy input (J/kg water) Exloss specific exergy loss (J/kg water) Exo specific exergy output (J/kg water) * Ali Idlimam [email protected] 1
Team of Solar Energy and Medicinal Plants EESPAM, Cadi Ayyad University, High School of Trainee Teachers, BO 2400, Marrakech, Morocco
IP L M mev min Ms MR M Reqexp;i M Reqpred;i Mytilus N T t ηe ηx λwp
improvement potential half-thickness of layer (m) mass of the product (kg) mass evaporated (kg) initial mass of sample (kg) dry mass (g) moisture ratio (−) experimental moisture ratio (−) predicted moisture ratio (−) Mytilus chilhensis number of experimental points temperature (K) time (s) microwave drying efficiency (%) exergy efficiency (%) latent heat of product (J/kg)
1 Introduction Drying is the
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