Abstract

The authors gratefully acknowledge the generous funding from the (1) Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology (KAUST); (2) the National Research Foundation Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program; and (3) the China Scholarship Council (CSC).

Highlights

  • By 2030, the world water deficit is expected to reach 2700 billion m3/year [4], and the population that will suffer from water shortage will exceed 1.6 billion [5]

  • Humidification-dehumidification (HDH) processes and membrane distillation (MD) are two emerging technologies that are suitable for smallscale operation

  • The freshwater productivity is proportional to the top brine temperature due to more heat source available

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Summary

Introduction

Freshwater is the key resource for the continuation of human society. With the growth of world population, the world water consumption has been increasing exponentially in the past decades [1, 2]. Humidification-dehumidification (HDH) processes and membrane distillation (MD) are two emerging technologies that are suitable for smallscale operation Both processes are facing key challenges that should be overcome before wider application is possible. MD are facing the issues of small distillate flux, membrane degradation due to scaling and fouling, and relatively low thermal efficiency. The spray-assisted low-temperature desalination (SLTD) technology is a recently proposed method that mitigates the issues faced by conventional thermal processes. It employs direct-contact evaporation/condensation method, eliminating metallic surfaces inside the system. A cost analysis will be conducted to evaluate the economic viability of the proposed configuration

System description and mathematical modeling
Performance analysis
System optimization
Findings
Conclusions

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Topics from this Paper

  • King Abdullah University Of Science And Technology
  • National Research Foundation Singapore
  • China Scholarship Council
  • Technological Enterprise
  • Water Desalination
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