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Comprehensive experimental and theoretical investigations on the effect of microbubble two-phase flow on the performance of direct-contact membrane distillation

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dc.contributor.authorKim, Y.-B.-
dc.contributor.authorLee, H.-S.-
dc.contributor.authorGil, G.-W.-
dc.contributor.authorJi, H.-
dc.contributor.authorKim, Y.-D.-
dc.date.accessioned2023-12-22T10:01:05Z-
dc.date.available2023-12-22T10:01:05Z-
dc.date.issued2023-02-
dc.identifier.issn1879-2448-
dc.identifier.issn1879-2448-
dc.identifier.urihttps://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9427-
dc.description.abstractThis study provides a comprehensive and systematic overview of the application of gas-liquid two-phase flow with microbubbles in the feed stream to improve heat and mass transfer in direct-contact membrane distillation (DCMD) processes for seawater desalination. A swirl-flow-type microbubble generator (MBG) was installed at the feed-side inlet of the DCMD module to investigate its effect on transmembrane flux. The maximum improvement in the MBG-assisted DCMD permeation flux was found to be approximately 18% at a lower feed temperature (40 °C) and optimal air flow rate (50 cc/min), and an optimal MBG geometry comprising a swirler, a nozzle tip of diameter 2?mm, and a diffuser at an angle of 30°. The results were observed to be related to the number density of microbubbles less than 100??m in size, which plays an important role in improving heat and mass transfer in two-phase flow. In addition, the simulation results based on conventional heat transfer correlations of bubbly flow underestimated the experimental results. Therefore, this study also aims to propose and verify a new two-phase flow heat transfer correlation. The proposed correlation considers the effects of bubble size distribution to accurately predict the performance of MBG-assisted DCMD processes. Copyright ? 2022 Elsevier Ltd. All rights reserved.-
dc.language영어-
dc.language.isoENG-
dc.publisherNLM (Medline)-
dc.titleComprehensive experimental and theoretical investigations on the effect of microbubble two-phase flow on the performance of direct-contact membrane distillation-
dc.typeArticle-
dc.identifier.doi10.1016/j.watres.2022.119407-
dc.identifier.scopusid2-s2.0-85145491691-
dc.identifier.wosid000904130600001-
dc.identifier.bibliographicCitationWater research, v.229, pp 119407-
dc.citation.titleWater research-
dc.citation.volume229-
dc.citation.startPage119407-
dc.type.docTypeArticle-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaEngineering-
dc.relation.journalResearchAreaEnvironmental Sciences & Ecology-
dc.relation.journalResearchAreaWater Resources-
dc.relation.journalWebOfScienceCategoryEngineering, Environmental-
dc.relation.journalWebOfScienceCategoryEnvironmental Sciences-
dc.relation.journalWebOfScienceCategoryWater Resources-
dc.subject.keywordPlusHEAT-TRANSFER-
dc.subject.keywordPlusDESALINATION PROCESS-
dc.subject.keywordPlusMASS-TRANSFER-
dc.subject.keywordPlusTEMPERATURE POLARIZATION-
dc.subject.keywordPlusSEAWATER DESALINATION-
dc.subject.keywordPlusSIMULATION-
dc.subject.keywordPlusSYSTEM-
dc.subject.keywordPlusDIESEL-
dc.subject.keywordPlusMODEL-
dc.subject.keywordPlusWATER-
dc.subject.keywordAuthorMembrane distillation-
dc.subject.keywordAuthorMicrobubble generator-
dc.subject.keywordAuthorPermeation flux enhancement-
dc.subject.keywordAuthorSeawater desalination-
dc.subject.keywordAuthorTwo-phase flow-
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