Black colored metal absorber is placed inside the glass-covered and three side insulated collector. The absorber is actually a hollow box having two openings, one is for cold air inlet and the other is for hot air outlet. The absorber has been designed in such a way that air can stay inside for an optimum period of time for absorbing maximum possible heat during it’s travel from inlet to outlet and gradually become hot. A low powered blower supplies air through absorber circuit. This hot and dry air then passes through a drying chamber where something is kept for drying.