Journal
DESALINATION
Volume 196, Issue 1-3, Pages 177-187Publisher
ELSEVIER
DOI: 10.1016/j.desal.2006.01.012
Keywords
desalination; humidification; dehumidification; mathematical model; mass transfer coefficient; heat transfer coefficient
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The humidification-dehumidification process is an interesting technique that has been adapted for water desalination. Previous works experimentally investigated desalination processes in the shell and tube columns, where the humidification and dehumidification were thermally coupled and simultaneously performed at the tube and shell sides, respectively. In this work, a comprehensive steady-state mathematical model was developed for such a humidification-dehumidification desalination process by taking into account the heat and mass balances on both sides of the desalting column, the mass transfer rate at the humidification side, and the heat transfer rate between the dehumidification side and humidification side. Meanwhile, the mass transfer coefficient at the humidification side and the total heat transfer coefficient between the dehumidification side and humidification side were discussed and correlated. The correlations could represent the experimental data very well.
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