A greener seawater desalination method by direct-contact spray evaporation and condensation (DCSEC): Experiments

Raid Alrowais, Chen Qian, Muhammad Burhan, Doskhan Ybyraiymkul, Muhammad Wakil Shahzad, Kim Choon Ng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)
26 Downloads (Pure)

Abstract

Owing 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.

Original languageEnglish
Article number115629
JournalApplied Thermal Engineering
Volume179
Early online date29 Jun 2020
DOIs
Publication statusPublished - 1 Oct 2020

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