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In our human life, food plays a predominant role followed by air and water. The main objective of introducing solar dryer arrangement is to prevent foods from high moisture content and also some insects, and dust may affects the products [1]. The moisture may be destroyed food products over a period of time without appropriate preservation made to it. In order to eliminate these challenges, solar energy is used to dry the food crops in a proper solar dryer at optimal moisture content and ensure the availability in it for the requirements [11]. Solar drying has the following benefits:

Figure 1.10 Unfired boiler [1].

 ✓ Longer period of storage

 ✓ Yield good profit

 ✓ Because of well dried product, no chance of forming fungus

 ✓ Easy handling and transportation

 ✓ Obtained better quality crops to market [1]

In a conventional system, fossil fuels are burned to generate heat [23], but in solar drying method, radiation comes into act. Solar dryers are classified into two different ways, i.e., depends on the air flow passage into systems that are natural circulation and forced circulation