Engineers

Solar dryer is another technology to harness the solar energy that is used to dry fruits, vegetables, and crops for preservation. Solar dryers are of two types: direct and indirect. In direct solar dryers, the substance that is to be dehydrated is exposed to the sunlight in a vast field. Indirect solar dryers consist of an insulated box coated inside with a black absorption surface, an air inlet and an air outlet, and a single- or double-glazed glass.