Table 1: Design conditions and assumptions for design of the dryer.

ItemsCondition or assumptions

Location Udaipur (27°42′ N, 75°33′ E)
OrientationE-W direction
Product driedDi-basic calcium phosphate
Loading capacity1500 kg per batch
Initial moisture content62.87% (db)
Final moisture content10.62% (db)
Sunshine hour 10 h
Drying period required18 h
Global solar radiation (I) for Udaipur region5.5 kWh/m2
Dryer efficiency (g) 30%
Collector material (cover)UV polythene 200 micron sheet
Density of air at ambient (kg/m3)1.252
North wall Glass wool sandwich in metallic cover
Height of chimney (H)3.75