The low efficiency of solar thermal systems is a drawback that hinders the effective utilization of renewable energy. In this context, a feasibility study was conducted on a double-pass solar air heater designed for solar drying applications. Given that low efficiency often results from inefficient thermal conversion, an optimization of the V-shape absorber was performed by varying the corrugation angle. The CFD method, validated by experimental results, was employed in the current study. The meteorological station located at Mohamed First University in Morocco provided real and unstable weather conditions that were inserted into the software. The results obtained were analyzed and discussed regarding the air domain temperature, collector outlet temperature, collector efficiency, and average drying tray temperature together with its distribution. The findings show that the average air temperature and outlet temperature reach a maximum of 345.53 k and 365.5 k, respectively. For absorber corrugation angles of Φ=100°, a maximum collector efficiency of 86% was achieved. In addition, different mass flow rates (MFRs) ranging from 0.003 to 0.068 kg/s were evaluated in this study. From the results, it was noticed that the optimal MFR varies depending on the products to be dried, with values of 0.028, 0.035, 0.049, and 0.068 kg/s for sweet potato, fig, cauliflower, and orange, respectively.