Solar drying is one of the most ancient and simplest forms of drying known to mankind. Even today, most of the agricultural product such as grains, spices, fruits and vegetables are dried under the sun. However, drying these products directly under the open sun has many drawbacks such as debris, rain, blowing wind, insect interaction, human and animal interference etc. which leads to contamination of the products. Thus, there is a need to make the solar dryers more efficient and cheaper. There are various types of solar dryers developed and are classified based on the mode of air circulation,...