Non-availability of drinking water is one of the major problems faced
by both the underdeveloped and developing countries all over the world.
Vinothkuumar and Kasturibai [1] stated that around 97% of the water in
theworld is in the ocean, approximately 2% is stored as ice in polar region
and 1% is fresh water available for the need of the plants, animals and
human life. Alarms have recently been sounded about Egypt's limited
water resources. Surface water resources originating from the Nile are
fixed at 55.5 billion m3 a year and are being completely used, whereas
non-renewable ground water sources in the western desert are being
brought into full production. The situation is worsening by growing
water requirements, demanded by a population boom, which needs
more agricultural areas to produce more food. As natural fresh water
resources are limited, seawater plays an important part as a source for
drinking water as well. In order to use this water, it has to be desalinated.
It is therefore beneficial to exploit solar energy directly by installing solar
stills. Great efforts have been carried out by some researches, to improve
the production capacity of the solar stills by adapting different techniques
Non-availability of drinking water is one of the major problems facedby both the underdeveloped and developing countries all over the world.Vinothkuumar and Kasturibai [1] stated that around 97% of the water intheworld is in the ocean, approximately 2% is stored as ice in polar regionand 1% is fresh water available for the need of the plants, animals andhuman life. Alarms have recently been sounded about Egypt's limitedwater resources. Surface water resources originating from the Nile arefixed at 55.5 billion m3 a year and are being completely used, whereasnon-renewable ground water sources in the western desert are beingbrought into full production. The situation is worsening by growingwater requirements, demanded by a population boom, which needsmore agricultural areas to produce more food. As natural fresh waterresources are limited, seawater plays an important part as a source fordrinking water as well. In order to use this water, it has to be desalinated.It is therefore beneficial to exploit solar energy directly by installing solarstills. Great efforts have been carried out by some researches, to improvethe production capacity of the solar stills by adapting different techniques
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