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DC Field | Value | Language |
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dc.citation.startPage | 120206 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | - |
dc.citation.volume | 160 | - |
dc.contributor.author | Lee, Junbeom | - |
dc.contributor.author | Lee, Seunghwan | - |
dc.contributor.author | Lee, Jaeseon | - |
dc.date.accessioned | 2023-12-21T16:50:31Z | - |
dc.date.available | 2023-12-21T16:50:31Z | - |
dc.date.created | 2020-10-13 | - |
dc.date.issued | 2020-10 | - |
dc.description.abstract | Even when dropwise condensation occurs on the super-hydrophobic surface, the condensed water droplets stick to the surface in the Wenzel state, resulting in lower drainage rate than the super-hydrophilic surface. Condensate that is not drained consequently degrades condensation heat transfer performance over time. In this study, it was considered that the striped patterned bi-philic surface could improve the condensation heat transfer in that droplet of the near super-hydrophobic area can be quickly removed and drained to a nearby super-hydrophilic region. Rapid drainage of condensate from the near super-hydrophobic surface can result in the renewal of new dropwise condensation, which can lead to increased heat transfer. Condensate discharges from bi-philic surfaces fabricated by material printing were measured and compared to condensate discharges from fully super-hydrophilic and near super-hydrophobic surfaces. As decreasing the stripe width of the bi-philic surface, the drainage rate is improved due to the rapid growth of the droplet nucleate on the near super-hydrophobic surface and the increment of the drainage path. The maximum condensate discharge from the bi-philic surface was measured to be 15% higher than that of the entirely super-hydrophilic surface. The amount of condensate recovery from the bi-philic surface was predicted through film and dropwise condensation combined modeling. Through this model, the amount of condensate recovered from the bi-philic surface was predicted within the 8% error range. Determination of the optimal stripe pattern to maximize the amount of condensate recovery can be made through developed modeling. The optimized stripe design of bi-philic surface resulted in a 25% increase in condensate discharge compared to the entirely super-hydrophilic surface. (C) 2020 Elsevier Ltd. All rights reserved. | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.160, pp.120206 | - |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2020.120206 | - |
dc.identifier.issn | 0017-9310 | - |
dc.identifier.scopusid | 2-s2.0-85088393478 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/48279 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0017931020331422 | - |
dc.identifier.wosid | 000571812700039 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Improved humid air condensation heat transfer through promoting condensate drainage on vertically stripe patterned bi-philic surfaces | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Thermodynamics; Engineering, Mechanical; Mechanics | - |
dc.relation.journalResearchArea | Thermodynamics; Engineering; Mechanics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Condensation | - |
dc.subject.keywordAuthor | Heat transfer | - |
dc.subject.keywordAuthor | Heat exchanger | - |
dc.subject.keywordAuthor | Bi-philic | - |
dc.subject.keywordAuthor | Super-hydrophilic | - |
dc.subject.keywordAuthor | Super-hydrophobic | - |
dc.subject.keywordAuthor | Water harvesting | - |
dc.subject.keywordPlus | DROPWISE CONDENSATION | - |
dc.subject.keywordPlus | SUPERHYDROPHOBIC SURFACES | - |
dc.subject.keywordPlus | TRANSFER ENHANCEMENT | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | WETTABILITY | - |
dc.subject.keywordPlus | DROPS | - |
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