Solar dryers are devices that use sunlight to remove moisture from food and other materials. They typically consist of a transparent cover that traps heat, allowing the temperature inside to rise. This heat helps to evaporate moisture, preserving the food and preventing spoilage. Solar dryers are often used for drying fruits, vegetables, and herbs, making them a sustainable option for food preservation. These dryers come in various designs, including solar tents and solar box dryers. They are eco-friendly and reduce reliance on electricity or fossil fuels. By harnessing the power of the sun, solar dryers provide an efficient way to extend the shelf life of perishable items.