{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/31930"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/31930","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions","abstract":"Using an open-loop wind tunnel and a full-cone water spray nuzzle, the air-side performance of a liquid-to-air heat exchanger is studied experimentally for wet-surface conditions. The test specimen is a brazed-aluminum, louvered-fin heat exchanger. The total capacity, pressure drop and water drainage behavior under various water usage rates and air face velocities are explored and compared to data from dry-surface conditions. The impact of spray orientation is also studied. The results are presented as plots against water usage rate or water spray rate per unit heat transfer area. The experimental data are used to validate a model developed for simultaneous heat and mass transfer of a wetted heat exchanger. Fouling on the fin surface is observed in the experiment, and fouling characteristics are discussed in this thesis.","abstract_html":"Using an open-loop wind tunnel and a full-cone water spray nuzzle, the air-side performance of a liquid-to-air heat exchanger is studied experimentally for wet-surface conditions. The test specimen is a brazed-aluminum, louvered-fin heat exchanger. The total capacity, pressure drop and water drainage behavior under various water usage rates and air face velocities are explored and compared to data from dry-surface conditions. The impact of spray orientation is also studied. The results are presented as plots against water usage rate or water spray rate per unit heat transfer area. The experimental data are used to validate a model developed for simultaneous heat and mass transfer of a wetted heat exchanger. Fouling on the fin surface is observed in the experiment, and fouling characteristics are discussed in this thesis.","abstract_has_math":false,"creators":["Zhang, Feini"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Jacobi, Anthony M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-06-27T21:19:55Z","date_published":"2012-06-27T21:19:55Z","updated_at":"2026-07-22T22:25:30Z","subjects":["wet surface","fouling","experiment","evaporative cooling","spray","louver-fin heat exchanger"],"languages":["en"],"rights":["Copyright 2012 Feini Zhang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/31930","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Jacobi, Anthony M."]},{"key":"dc:creator","label":"Author","values":["Zhang, Feini"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-06-27T21:19:55Z","2014-06-28T10:00:19Z","2012-05"]},{"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":["wet surface","fouling","experiment","evaporative cooling","spray","louver-fin heat exchanger"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2012 Feini Zhang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/31930"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Using an open-loop wind tunnel and a full-cone water spray nuzzle, the air-side performance of a liquid-to-air heat exchanger is studied experimentally for wet-surface conditions. The test specimen is a brazed-aluminum, louvered-fin heat exchanger. The total capacity, pressure drop and water drainage behavior under various water usage rates and air face velocities are explored and compared to data from dry-surface conditions. The impact of spray orientation is also studied. The results are presented as plots against water usage rate or water spray rate per unit heat transfer area. The experimental data are used to validate a model developed for simultaneous heat and mass transfer of a wetted heat exchanger. 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The test specimen is a brazed-aluminum, louvered-fin heat exchanger. The total capacity, pressure drop and water drainage behavior under various water usage rates and air face velocities are explored and compared to data from dry-surface conditions. The impact of spray orientation is also studied. The results are presented as plots against water usage rate or water spray rate per unit heat transfer area. The experimental data are used to validate a model developed for simultaneous heat and mass transfer of a wetted heat exchanger. 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