New design of the stepped solar still

الملخص EN

-This research a stepped solar still has been constructed and its performance has been evaluated under different atmospheric circumstances of Basra city( Iraq) (Latitude 30° 33' 56.55"N, Longitude 47° 45' 5.86"E) .

The still has consists of a basin with area of (0.075 mP2P) which divided into three basins , area of each basin is(0.025 mP2P) and provide each basin by reflector (mirrors) area of each one is (0.025 mP2P), the internal reflectors help to concentrate the sun ray on the basins to increase the productivity of the distilling water(fresh water).

The stepped solar still inclined at an angle of (15PoP), The maximum efficiency of the experimental still varies from (40.6% -75%