Using the power of the sun to preserve food and other agriculture products has been practiced for centuries. In the traditional way crops are dried directly in the sun under the open sky. The major disadvantage of this traditional method is that the goods are exposed to dust, animals, insects, wind and moisture. In addition, the results depend on good weather conditions.
Modern solar dryers are more efficient, hygienic and keep the crops safe from damage and insects. The most advanced designs allow for controlling drying parameters such as moisture content, air temperature, humidity and airflow rate. Adequate drying helps to preserve the flavour, texture,and color of the food which leads to a better quality product.