The present solar still consists of asymmetric green house type solar still coupled
with solar collector. It has a black painted
basin of 1 m
2
area filled with brackish water
supplied to it from a collector which preheats
the water to act as an enhancer to the solar
still. The evaporating basin is covered by a
sheet of clear glass (to allow sunlight to
reach the water) which is tilted at a slight
angle (35
) to let the fresh water that condenses on its underside trickle down to a collecting trough. A trough running along the
bottom side of the glass cover ensures the
collection of the distilled water towards the
collecting vessel. The glass also holds the
heat inside the still.