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Low-cost hygienic drying technology for high-quality products The Solar Bubble Dryer (ISD) is a mobile, solar-powered drying system designed to efficiently dry freshly harvested cassava roots, reducing post-harvest losses and improving product quality. It utilizes solar energy for both thermal collection to speed up drying and electricity to power a blower for air circulation, making it independent from the power grid. The system is mobile, allowing farmers to dry produce near the harvest site, minimizing transportation costs and spoilage risks. With a drying capacity of 90-145 kg per cycle, the technology boosts food security, supports women’s empowerment, reduces carbon footprints, and promotes sustainable practices. It has a 10-year lifespan, an initial cost of $1,800, and offers a return on investment ranging from 7% to 180%. The technology contributes to multiple SDGs, including those related to hunger, gender equality, clean energy, economic growth, and climate action.