The document presents an experimental analysis comparing the performance of an open, simple, and modified greenhouse dryer for drying potato flakes under forced convection. Total weight reduction of potato flakes was 80.1% in the modified greenhouse dryer with an inclined roof in just 5 hours, compared to 6 hours in the simple greenhouse dryer to achieve similar results. The modified dryer maintained a higher average temperature and lower average relative humidity than the simple dryer, improving the drying rate. Visual appearance of flakes dried in the greenhouse dryers was also improved compared to open sun drying.