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dc.contributor.authorKim, Young-Deuk
dc.contributor.authorFrancis, Lijo
dc.contributor.authorLee, Jung Gil
dc.contributor.authorHam, Min-Gyu
dc.contributor.authorGhaffour, NorEddine
dc.date.accessioned2018-09-06T07:37:11Z
dc.date.available2018-09-06T07:37:11Z
dc.date.issued2018-07-18
dc.identifier.citationKim Y-D, Francis L, Lee J-G, Ham M-G, Ghaffour N (2018) Effect of non-woven net spacer on a direct contact membrane distillation performance: Experimental and theoretical studies. Journal of Membrane Science 564: 193–203. Available: http://dx.doi.org/10.1016/j.memsci.2018.07.019.
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2018.07.019
dc.identifier.urihttp://hdl.handle.net/10754/628522
dc.description.abstractThis study provides a comprehensive and systematic overview of the fundamental characteristics of heat and mass transfer in the direct contact membrane distillation (DCMD) process that employs different types of spacers on one or both surfaces of the membrane. Detailed theoretical investigations were carried out to demonstrate the effects of spacers adjacent to the membrane surface on heat and mass transfer enhancement in the DCMD with a PTFE/PP composite membrane, complemented with experimental data for model validation. Thus, this work aimed to propose and demonstrate the heat transfer correlation for spacer-filled channels to reliably predict the heat and mass transfer improvement by non-woven net spacers in the DCMD process. The results showed that the permeate flux enhancement by the spacers ranged between 7% and 19% only for the spacer-filled permeate channels and between 21% and 33% only for the spacer-filled feed channels even at higher flow rates, thus indicating lower flux enhancements in the spacer-filled permeate channels. This was because the influence of spacers on flux improvement became more evident at higher temperatures owing to higher temperature polarization. In this study, the maximum flux enhancement of approximately 43% over the empty channels was achieved using the thinnest and densest spacer with a hydrodynamic angle of 90°, adjacent to both membrane surfaces.
dc.description.sponsorshipThis study was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2017R1D1A1B03035821) and by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20174010201310).
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0376738818313449
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, [, , (2018-07-18)] DOI: 10.1016/j.memsci.2018.07.019 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectSpacer
dc.subjectTemperature polarization
dc.subjectHeat and mass transfer
dc.subjectFlux improvement
dc.subjectDesalination
dc.titleEffect of non-woven net spacer on a direct contact membrane distillation performance: Experimental and theoretical studies
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJournal of Membrane Science
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan Gyeonggi-do 15588, Republic of Korea
dc.contributor.institutionQatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), P.O. Box: 34110, Qatar
dc.contributor.institutionDepartment of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
kaust.personLee, Jung Gil
kaust.personGhaffour, Noreddine
refterms.dateFOA2018-09-06T07:46:13Z
dc.date.published-online2018-07-18
dc.date.published-print2018-10


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