Numerical study of heat and mass transfer in a desalination system

In today’s world the demand for freshwater, to meet needs of human activities is growing exponentially. As a result, manufacturers are continuing make progress in design and production efficient desalination cooling units optimize reduce overall cost production. this work, we study numerical evaporation thin liquid film dripping by gravity with constant feed rates closed rectangular cavity formed two parallel flat plates. The wall which supports heated temperature heating, while other kept at uniform condense vapor. results obtained show that heat transfer distillation cell dominated latent associated evaporation. also increases slightly heating zone then decreases over most plate