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Desalination of salty water using vacuum spray dryer driven by solar energy
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering. University of Southern Queensland, Australia.ORCID iD: 0000-0002-4900-5633
2017 (English)In: Desalination, ISSN 0011-9164, E-ISSN 1873-4464, Vol. 404, p. 182-191Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 404, p. 182-191
Keywords [en]
Desalination, Evaporation, Solar energy, Vacuum, Waste heat
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-200989DOI: 10.1016/j.desal.2016.11.015ISI: 000392165500018Scopus ID: 2-s2.0-84995957106OAI: oai:DiVA.org:kth-200989DiVA, id: diva2:1072291
Note

QC 20170207

Available from: 2017-02-07 Created: 2017-02-07 Last updated: 2017-11-29Bibliographically approved

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