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dc.contributor.authorBudaklı, Mete
dc.contributor.authorSalem, Thamer Khalif
dc.contributor.authorArık, Mehmet
dc.date.accessioned2021-01-08T21:51:19Z
dc.date.available2021-01-08T21:51:19Z
dc.date.issued2020
dc.identifier.issn1359-4311
dc.identifier.urihttp://doi.org/10.1016/j.applthermaleng.2020.115382
dc.identifier.urihttps://hdl.handle.net/20.500.12846/136
dc.descriptionBUDAKLI, Mete/0000-0003-1721-1245en_US
dc.descriptionWOS:000552131100002en_US
dc.description.abstractIn this work, an experimental and a theoretical study was carried out on condensation heat transfer on vertically aligned bare unstructured, micro V-grooved and square-grooved copper substrates. During the experiments, dropwise condensation and drop-film-wise condensation modes were achieved. The surface wettability was recorded by using a high-speed camera, while the overall thermal performance has been evaluated through determining heat flux and heat transfer coefficients. Experimental results show that although the condensation surface area increased by 50% utilizing micro-grooves, the thermal performance is approximately 30% lower than the unstructured surface. Additionally, experimentally measured data has been compared with two correlations for filmwise condensation and one correlation proposed for dropwise condensation as classical benchmarks found in open literature. The comparison for the unstructured surface on which dropwise condensation has been visually monitored reveals that the benchmark for dropwise condensation agrees well for the subcooling ranging between 7.5-10 K and 35-40 K. Beyond this range, the correlation either overestimates or underpredicts the heat flux values. Two other correlations show similar trend but exhibit weak agreement with the experimental data. In case of microstructured surfaces, predictions of correlations for filmwise condensation are found to be the best for square-grooved surface than for V-grooved surface. Furthermore, new correlations have been proposed for all three surfaces based on the experimental data obtained in the present study. The proposed correlations show rather a good agreement for the unstructured surface over the full range of sub-cooling, while for those developed for microstructured surfaces, accordance up to 93-95% has been reached.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Marie-Curie Actions (FP7)European Union (EU) [116C027]en_US
dc.description.sponsorshipThe authors wish to thank the Scientific and Technological Research Council of Turkey (TUBITAK) and Marie-Curie Actions (FP7) for the research Grant No. 116C027. The authors also thank the EVATEG Center at Ozyegin University for use of the infrastructure during testing and computations.en_US
dc.language.isoengen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCondensationen_US
dc.subjectPhase Changeen_US
dc.subjectMicrostructureen_US
dc.subjectThermal Managementen_US
dc.subjectElectronics Coolingen_US
dc.titleAn experimental and theoretical analysis of vapor-to-liquid phase change on microstructured surfacesen_US
dc.typearticleen_US
dc.relation.journalApplied Thermal Engineeringen_US
dc.identifier.volume178en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.departmentTAÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.contributor.institutionauthorBudaklı, Mete
dc.identifier.doi10.1016/j.applthermaleng.2020.115382


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