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Falling-film heat exchangers used in desalination systems: A review...

by Zhengshu Dai, Anthony Jacobi, Xiaofei Wang, Yuheng Zhang, Kashif Nawaz
Publication Type
Journal
Journal Name
International Journal of Heat and Mass Transfer
Publication Date
Page Numbers
122407 to 122407
Volume
185
Issue
185

With growing demand for fresh water, there has been an increasing interest in energy-efficient desalination technologies. Falling-film-based, multi-effect distillation (MED) systems have been extensively deployed world-wide. The performance of such systems heavily depends on the efficiency of the evaporation process. In the current paper, research on falling-film heat exchangers used in desalination systems, especially MED systems, is critically reviewed to assess the state of the technology. The review includes falling-film evaporation mechanisms, system operation, and scaling issues. Finally, opportunities for further application and areas where more research is needed are identified.