This article analyzes the energy, exergy, and economic performances of a mixed forced convection solar tunnel dryer designed for drying fishery products. This system integrates an air collector equipped with fans and a drying cabin. Tested by Coly et al. Under empty and loaded conditions under different climatic conditions (clear, cloudy, or rainy skies), the dryer has thermal efficiencies of 17% to 60% for the collector and 0% to 5.7% for the cabin, depending on the sunlight. This work performs an exergy analysis to identify energy losses and propose ways to optimize the overall efficiency of the system. Economically, the study highlights benefits in terms of hygiene, product quality and profitability, with an estimated payback period of 0.6 years for oily fish, 1.1 years for lean fish, 1.5 years for shrimp, and an average of 0.7 years for these three products, over an operating period of 150 days per year.
solar dryer; exergy; collector; drying cabin, economy.
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