The solar greenhouse dryer built in this studywas the feature on
conventional greenhouse type tunnel, see Fig. 1. The dimensions
and views are described in Fig. 2, where the length (East-West) and
width (North-South) are 14.85 m 8.30 m respectively, with a
useful height of 3.70 m. The metallic structure was made by 9
arches of 3.70 mwith radius covered with thermal plastic film with
a thickness of 200 103 mm (800 G). The soil was covered by
black plastic film, which was useful for the isolation of wood chips
from the soil and it also helps to capture heat from the sun. The
solar greenhouse dryer has two inspection doors, Fig. 2A. The
middle the roof has a vent with dimensions of 14.85 m 0.50 m,
see Fig. 2C and D.