MODELING OF THIN LAYER DRYING OF CATFISH (CLARIAS GARIEPINUS) IN CONVENTIONAL AND HYBRID SOLAR DRYERS DURING THE WET SEASON
Keywords:
conventional, hybrid, catfish, thin layer, sun dryingAbstract
Mathematical modeling and computer simulation of fish drying make it possible for insight to be gained into the comparative performance of various drying systems. Fish is a perishable food which spoils immediately after harvest, especially during the wet season. This paper, therefore, aimed at providing quantitative description of drying behaviour and to predict quality changes during catfish drying. Thin layer drying of catfish in conventional and hybrid solar dryers (CSD and HSD) was conducted with sun drying (SD) as control. The experiments were conducted in completely randomized design (CRD) with three replicates during the wet season. Eight popular thin layer models were selected and tested with the drying data obtained from the fish species. Results indicated that, in all drying methods, the Wang and Singh model was taken as the best model for predicting the moisture ratio with the lowest standard error of estimate and the highest co-efficient of determination R2 in the CSD as 0.063 and 0.994; in HSD 0.049 and 0.997 while in SD, 0.042 and 0.982, respectively. The hybrid solar dryer was the best to understand the heat and mass transfer phenomena in the drying of Clarias gariepinus during the wet season.
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