A greener seawater desalination method by direct-contact spray evaporation and condensation (DCSEC): Experiments
AuthorsAlrowais, Raid Naif
Shahzad, Muhammad Wakil
Ng, Kim Choon
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal 23955-690096, Saudi Arabia
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2020-06-29
Print Publication Date2020-10
Permanent link to this recordhttp://hdl.handle.net/10754/664322
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AbstractOwing to the high specific energy consumption of conventional seawater desalination methods available hitherto, there is much motivation for designing greener desalination processes. As a greener desalination process, it should consume lower top-brine temperatures for the seawater feed as well as minimum chemical use for brine treatment. In this paper, a direct-contact spray-assisted evaporation and condensation (DCSEC) is presented that addresses the above-mentioned requirements of greener desalination. We have tested both the single-stage and multi-stage configurations of DCSEC process with seawater (3.5% by weight salinity) from Red Sea. The performance of the system was investigated for a feed flow rate of 6 L/minute when the evaporator chamber temperature was varied from 38 °C to 60 °C. From the experiments, maximum distillate production of 31 L/hr m3 was recorded at 60 °C feed temperature for a single-stage configuration. To further enhance the distillate production of DCSEC, an innovative micro/nano-bubbles (M/NBs) generator device is incorporated in the feed supply system which resulted in 34% increase in potable water production at the corresponding inlet feed temperatures.
CitationAlrowais, R., Qian, C., Burhan, M., Ybyraiymkul, D., Shahzad, M. W., & Ng, K. C. (2020). A greener seawater desalination method by direct-contact spray evaporation and condensation (DCSEC): Experiments. Applied Thermal Engineering, 179, 115629. doi:10.1016/j.applthermaleng.2020.115629
SponsorsThe authors wish to thank the King Abdullah University of Science & Technology (KAUST) (URF/1/2986-01-01), and Aljouf University (JU).
JournalApplied Thermal Engineering
Except where otherwise noted, this item's license is described as This is an open access article under the CC BY-NC-ND license.