A novel integrated thermal-/membrane-based solar energy-driven hybrid desalination system: Concept description and simulation results

Abstract
In this paper, a hybrid desalination system consisting of vacuum membrane distillation (VMD) and adsorption desalination (AD) units, designated as VMD-AD cycle, is proposed. The synergetic integration of the VMD and AD is demonstrated where a useful effect of the AD cycle is channelled to boost the operation of the VMD process, namely the low vacuum environment to maintain the high pressure gradient across the microporous hydrophobic membrane. A solar-assisted multi-stage VMD-AD hybrid desalination system with temperature modulating unit is first designed, and its performance is then examined with a mathematical model of each component in the system and compared with the VMD-only system with temperature modulating and heat recovery units. The total water production and water recovery ratio of a solar-assisted 24-stage VMD-AD hybrid system are found to be about 21% and 23% higher, respectively, as compared to the VMD-only system. For the solar-assisted 24-stage VMD-AD desalination system having 150 m2 of evacuated-tube collectors and 10 m3 seawater storage tanks, both annual collector efficiency and solar fraction are close to 60%.

Citation
A novel integrated thermal-/membrane-based solar energy-driven hybrid desalination system: Concept description and simulation results 2016 Water Research

Acknowledgements
This research reported in this paper was supported by a grant (code 13IFIP-B065893-03) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government, and King Abdullah University of Science and Technology (KAUST), Saudi Arabia.

Publisher
Elsevier BV

Journal
Water Research

DOI
10.1016/j.watres.2016.05.002

PubMed ID
27176649

Additional Links
http://linkinghub.elsevier.com/retrieve/pii/S0043135416303177

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