Abstract

Water challenge in arid countries is considered one of most critical challenges facing agriculture and food systems, and is expected to grow with time. This is due mainly to the scarcity and rapid depletion of freshwater resources, and the increasing groundwater salinity. Nevertheless, these countries have generally a great solar energy potential. This potential can be best developed by solar desalination concepts and methods specifically suited for rural water supply, including small-scale irrigation, and also the protection of available water resources against overuse and pollution. The present study is concerned with the performance review of solar desalination systems that could be applied for agriculture applications in rural arid areas. Direct and indirect solar desalination technologies of solar energy based system concepts for irrigation water desalination are described and analyzed. Attempts are reported to propose precepts upon which a strategy can be formulated for introducing desalination technology for irrigation.

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