From the presented experimental results of a solar desalination
system based on humidification and dehumidification, HDH, the
following conclusions can be drawn:
Condenser with cylindrical shell and corrugated fins led to in crease the rate of heat transfer and as a result of that the air
humidity ratio at the condenser outlet doesn’t exceed 0.03 for
natural and forced down.
Maximum productivity is obtained when the ratio of cold water
at dehumidifier inlet to hot water at humidifier inlet (C/H) is
twice.
Forced down air circulation gives higher performance than
forced up, forced up-down and natural air circulation.
Forced up-down air circulation gives approximately the same
productivity as natural air circulation.
Cellulose 5 mm gives higher productivity than using cellulose
7 mm under both natural and forced flow circulation.
Wet surface area is the main parameter for HDH desalination
system and affects the performance of the unit.