Development and cost estimation of natural circulating solar dryer
Himanshu Ekka, Rahul Dev Kurre, Shashikant, Yograj, Diwakar Naidu
A natural circulating solar dryer is fabricated and its cost is estimated. This solar drying system was made up of two units solar collector and drying cabinet. The solar collector is made up of rectangular wooden box (1.6 m x 0.91 m x 0.19 m) having a front face area of 1.45m2 in which black painted rocks were placed and rectangular vertical drying cabinet made up of float glass sheet was erected on angle iron frame. Rocks of an average size of 10 cm diameter and painted with blackboard paint are placed in solar collector to absorb maximum solar radiation. A rectangular cuboids shaped drying cabinet is made by adhering four float glass of rectangular shape having dimension of 0.95 m x 0.56 m x 0.39 m (l x b x t) and having a front face area of 0.532m2.This cabinet is further divided into five divisions with the help of removable shelves, made up of aluminium wire mesh.