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Enhancement of Solar Desalination Still Productivity Using Flash Evaporation (Dept.M)

A Solar desalination system with flashing chamber is experimentally investigated. It was found that the productivity and performance of the system were significantly positive dependent on both the mass flow rate of the impure water and the linear speed of the nozzle’s holder, and slightly increase with the using of a porous medium in basin of the still as a heat storage sink. There is an optimum mass flow corresponds to the holder linear speed with respect to both thermal efficiency and water production. The unit daily productivity reaches 6.7 L/m 2 .day. The average daily thermal efficiency reached 77.35%.