Table 4: Cost of constructing a unit solar dryer.

MaterialDimensionQuantityUnit cost, NTotal, NTotal, $

Mild steel0.1 × 0.2 m226,60013,20088
Angle iron0.2 m31,5004,50030
Perspex0.12 × 0.24 m21/212,0006,00040
Wire gauze0.1 × 0.2 m21/24,0002,00013.3
Wood0.02 × 0.1 m242751,50010
Sealant11,2001,2008
Paint18008005.3

Grand total29,200194.6

For exchange rate of 1 US$ = N150.00.