EXPERIMENTAL ANALYSIS AND MODELING OF MANGOES DRYING KINETICS

摘要: Abstract: In this work, the drying rate of mango slices is experimentally studied and modeled. The developed model takes into account physical transformations occurring during process. simulated rates, computed with proposed are compared a set experimental rates obtained by analyzing several trials. also used to analyze sensitivity respect its physico-chemical parameters. results show good fit between data. Keywords : drying, mango, modeling, food preservation, INTRODUCTION Fruits widely process in industry. This enables increasing significantly products shelf life reducing their volume mass (Aghbashlo quality energy consumption et al., 2009). Moreover, undesirable changes can be greatly avoided elimination most microorganisms fruits (Ochoa-Martinez 2012). Nevertheless, it still major engineering challenge because highly sensitive heat changes. properties, taste color. Several development mathematical modelstudies have been realized order improve process, regarding dried (Koua Especially, one important issue analysis modeling rate. Indeed, an accurate robust (working for wide range operating conditions) improving design optimization dryers A literature review shows that these last years. studies (Desmorieux 2008; Dissa 2009) led expressions. Gbaha al. empirical solar dryer (Gbaha 2007). Goyal models mangoes. They showed agreement reached using exponential Arrhenius type (Goyal 2006). Janjay numerical simulations finite element method slice (Janjai 2008). Most based on or semi-empirical approaches, which limit use specific rangesof conditions.These aimgenerally terms consumption,process design, products(Mujumdar, such suffers from poor control ofthe conditionsthat canlead poorproduct quality. particular, often overheated, resulting nutritional taking simultaneously transferphenomenaduring thereforeof fundamental interest efficientdryers (Nonclerq etal., 2009).This study devoted Mangoes exported fruit West Africa (Rivier Actually, without transformation large partof production wasteddue lack local, national international tradeopportunities. work has three main objectives: 1. To carry out trials rates. 2. develop original model, balances expression transfer coefficients complex porous media. leads simulate