{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/97780"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/97780","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Condensation heat flux measurements in ambient conditions on superhydrophobic nanostructured surfaces","abstract":"Water vapor condensation is a natural phenomenon experienced in everyday life which can be combined with non-wetting surfaces to enhance heat transfer, desalination, anti-icing and self-cleaning. Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on different materials, a need has developed for heat transfer measurements through these superhydrophobic coatings as typical heat transfer calculations have been known to underestimate the total heat transfer. Here, I propose to measure the heat flux of a superhydrophobic, nanostructured surface without the need for a controlled vacuum environment. By measuring heat flux within an individual droplet and multiple droplets within a surface, we show that it is possible to measure heat flux of a surface without the need for expensive equipment. As a means of validating these results, experiments within a vacuum chamber will be repeated; hence, the author has provided notes regarding the vacuum chamber building process. This work demonstrates the ability for other researchers to know the heat flux density of a newly fabricated surface to perform initial calculations. Further experiments will involve a vacuum chamber in which similar experiments will be run to be able to compare data and see the effect of atmospheric conditions and non-condensable gasses.","abstract_html":"Water vapor condensation is a natural phenomenon experienced in everyday life which can be combined with non-wetting surfaces to enhance heat transfer, desalination, anti-icing and self-cleaning. Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on different materials, a need has developed for heat transfer measurements through these superhydrophobic coatings as typical heat transfer calculations have been known to underestimate the total heat transfer. Here, I propose to measure the heat flux of a superhydrophobic, nanostructured surface without the need for a controlled vacuum environment. By measuring heat flux within an individual droplet and multiple droplets within a surface, we show that it is possible to measure heat flux of a surface without the need for expensive equipment. As a means of validating these results, experiments within a vacuum chamber will be repeated; hence, the author has provided notes regarding the vacuum chamber building process. This work demonstrates the ability for other researchers to know the heat flux density of a newly fabricated surface to perform initial calculations. Further experiments will involve a vacuum chamber in which similar experiments will be run to be able to compare data and see the effect of atmospheric conditions and non-condensable gasses.","abstract_has_math":false,"creators":["Sotelo, Jesus A"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Miljkovic, Nenad"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08-10T20:33:24Z","date_published":"2017-08-10T20:33:24Z","updated_at":"2026-07-22T22:24:34Z","subjects":["Heat flux measurement","Condensation","Superhydrophobic"],"languages":["en"],"rights":["Copyright 2017 Jesus Alfredo Sotelo"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/97780","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Miljkovic, Nenad"]},{"key":"dc:creator","label":"Author","values":["Sotelo, Jesus A"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-08-10T20:33:24Z","2019-08-11T09:15:35Z","2017-04-26","2017-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Heat flux measurement","Condensation","Superhydrophobic"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Jesus Alfredo Sotelo"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/97780"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Water vapor condensation is a natural phenomenon experienced in everyday life which can be combined with non-wetting surfaces to enhance heat transfer, desalination, anti-icing and self-cleaning. Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on different materials, a need has developed for heat transfer measurements through these superhydrophobic coatings as typical heat transfer calculations have been known to underestimate the total heat transfer. Here, I propose to measure the heat flux of a superhydrophobic, nanostructured surface without the need for a controlled vacuum environment. By measuring heat flux within an individual droplet and multiple droplets within a surface, we show that it is possible to measure heat flux of a surface without the need for expensive equipment. As a means of validating these results, experiments within a vacuum chamber will be repeated; hence, the author has provided notes regarding the vacuum chamber building process. This work demonstrates the ability for other researchers to know the heat flux density of a newly fabricated surface to perform initial calculations. Further experiments will involve a vacuum chamber in which similar experiments will be run to be able to compare data and see the effect of atmospheric conditions and non-condensable gasses.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Jesus Sotelo, accepted the attached license on 2017-04-25 at 12:13.","The student, Jesus Sotelo, submitted this Thesis for approval on 2017-04-25 at 12:20.","This Thesis was approved for publication on 2017-04-26 at 18:05.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11042 on 2017-08-10 at 15:06:59","Made available in DSpace on 2017-08-10T20:33:24Z (GMT). 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Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on different materials, a need has developed for heat transfer measurements through these superhydrophobic coatings as typical heat transfer calculations have been known to underestimate the total heat transfer. Here, I propose to measure the heat flux of a superhydrophobic, nanostructured surface without the need for a controlled vacuum environment. By measuring heat flux within an individual droplet and multiple droplets within a surface, we show that it is possible to measure heat flux of a surface without the need for expensive equipment. As a means of validating these results, experiments within a vacuum chamber will be repeated; hence, the author has provided notes regarding the vacuum chamber building process. This work demonstrates the ability for other researchers to know the heat flux density of a newly fabricated surface to perform initial calculations. Further experiments will involve a vacuum chamber in which similar experiments will be run to be able to compare data and see the effect of atmospheric conditions and non-condensable gasses.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Jesus Sotelo, accepted the attached license on 2017-04-25 at 12:13.","The student, Jesus Sotelo, submitted this Thesis for approval on 2017-04-25 at 12:20.","This Thesis was approved for publication on 2017-04-26 at 18:05.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11042 on 2017-08-10 at 15:06:59","Made available in DSpace on 2017-08-10T20:33:24Z (GMT). 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