Desalination of salty water using vacuum spray dryer driven by solar energy

Hamawand, Ihsan and Lewis, Larry and Ghaffour, Noreddine and Bundschuh, Jochen (2017) Desalination of salty water using vacuum spray dryer driven by solar energy. Desalination, 404. pp. 182-191. ISSN 0011-9164


This paper addresses evaporation under vacuum condition with the aid from solar energy and the recovered waste heat from the vacuum pump. It is a preliminary attempt to design an innovative solar-based evaporation system under vacuum. The design details, equipment required, theoretical background and work methodology are covered in this article. Theoretically, based on the energy provided by the sun during the day, the production rate of pure water can be around 15 kg/m2/day. Assumptions were made for the worst case scenario where only 30% of the latent heat of evaporation is recycled and the ability of the dark droplet to absorb sun energy is around 50%. Both the waste heat from the pump and the heat collected from the photovoltaic (PV) panels are proposed to raise the temperature of the inlet water to the system to its boiling point at the selected reduced pressure.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Historic - National Centre for Engineering in Agriculture (NCEA) (1 Jul 2013 - 31 Jul 2018)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - No Department (1 Jul 2013 -)
Date Deposited: 07 Jun 2022 03:28
Last Modified: 07 Jun 2022 05:34
Uncontrolled Keywords: Vacuum, Evaporation, Solar energy, Waste heat, Desalination
Fields of Research (2008): 09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
05 Environmental Sciences > 0502 Environmental Science and Management > 050209 Natural Resource Management
Fields of Research (2020): 41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410406 Natural resource management
40 ENGINEERING > 4004 Chemical engineering > 400411 Water treatment processes
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