3.5.2 Cost analysis of solar dryer
Solar dryer consists of two main components, collector and the drying chamber.
Collector:
The roof of the collector should admit short wave radiations components of the solar radiation spectrum and
block the long-wave radiations emitted by the heated absorber. The temperatures reached are up to 800C to 900C, and
the materials should withstand them. Three choices are glass, acrylic and transparent polycarbonate sheets