{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/3668"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/3668","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Tubo de calor de água, um estudo teórico-experimental","abstract":"The aim of this work was to develop methodologies for the project, manufacturing and experimental thermal evaluation of heat pipes. The model suggested by SUN and TIEN for theoretical steady-state heat pipe performance was solved for a new condition of cooling fluid and used for predicting the wall temperature profile and saturated vapor temperature. A water heat pipe for a 400 watts heat removal was projected and manufacture. The prototype consists of a copper tube 1.000 mm long, with an outside diameter of 25,4 mm and a wall thickness of 0,79 mm. The wick structure is a composite phosphor bronze wrapped-screen wick with meshes 50 and 250 fitted against the inner wall of the tube to leave a vapor space diameter of 17 mm. The prototype was instrumented and monitored. The measured wall temperature profiles for several heat-input levels are compared and discussed with the theoretical predictions. The methodology for the project of heat pipes was discussed and compared with other procedures suggested by DUNN and CHI.","abstract_html":"The aim of this work was to develop methodologies for the project, manufacturing and experimental thermal evaluation of heat pipes. The model suggested by SUN and TIEN for theoretical steady-state heat pipe performance was solved for a new condition of cooling fluid and used for predicting the wall temperature profile and saturated vapor temperature. A water heat pipe for a 400 watts heat removal was projected and manufacture. The prototype consists of a copper tube 1.000 mm long, with an outside diameter of 25,4 mm and a wall thickness of 0,79 mm. The wick structure is a composite phosphor bronze wrapped-screen wick with meshes 50 and 250 fitted against the inner wall of the tube to leave a vapor space diameter of 17 mm. The prototype was instrumented and monitored. The measured wall temperature profiles for several heat-input levels are compared and discussed with the theoretical predictions. The methodology for the project of heat pipes was discussed and compared with other procedures suggested by DUNN and CHI.","abstract_has_math":false,"creators":["Cavalcanti, Evandro Sérgio Camelo"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Bastos, Leopoldo Eurico Gonçalves"],"committee_chairs":[],"committee_members":[],"year":1983,"date_issued":"1983-05","date_published":"1983-05","updated_at":"2026-07-24T01:16:07Z","subjects":["Transferência da calor","Tubos","Mecânica dos líquidos"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/3668","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Bastos, Leopoldo Eurico Gonçalves"]},{"key":"dc:creator","label":"Author","values":["Cavalcanti, Evandro Sérgio Camelo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-02-28T18:00:14Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:05:25Z"]},{"key":"dc:date.issued","label":"Date","values":["1983-05"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Transferência da calor","Tubos","Mecânica dos líquidos"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/3668"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The aim of this work was to develop methodologies for the project, manufacturing and experimental thermal evaluation of heat pipes. The model suggested by SUN and TIEN for theoretical steady-state heat pipe performance was solved for a new condition of cooling fluid and used for predicting the wall temperature profile and saturated vapor temperature. A water heat pipe for a 400 watts heat removal was projected and manufacture. The prototype consists of a copper tube 1.000 mm long, with an outside diameter of 25,4 mm and a wall thickness of 0,79 mm. The wick structure is a composite phosphor bronze wrapped-screen wick with meshes 50 and 250 fitted against the inner wall of the tube to leave a vapor space diameter of 17 mm. The prototype was instrumented and monitored. The measured wall temperature profiles for several heat-input levels are compared and discussed with the theoretical predictions. The methodology for the project of heat pipes was discussed and compared with other procedures suggested by DUNN and CHI."]},{"key":"dc:title","label":"Title","values":["Tubo de calor de água, um estudo teórico-experimental"]}]}],"canonical_facts":{"dc:contributor.advisor":["Bastos, Leopoldo Eurico Gonçalves"],"dc:creator":["Cavalcanti, Evandro Sérgio Camelo"],"dc:date.accessioned":["2018-02-28T18:00:14Z"],"dc:date.available":["2026-05-16T03:05:25Z"],"dc:date.issued":["1983-05"],"dc:description.abstract":["The aim of this work was to develop methodologies for the project, manufacturing and experimental thermal evaluation of heat pipes. The model suggested by SUN and TIEN for theoretical steady-state heat pipe performance was solved for a new condition of cooling fluid and used for predicting the wall temperature profile and saturated vapor temperature. A water heat pipe for a 400 watts heat removal was projected and manufacture. The prototype consists of a copper tube 1.000 mm long, with an outside diameter of 25,4 mm and a wall thickness of 0,79 mm. The wick structure is a composite phosphor bronze wrapped-screen wick with meshes 50 and 250 fitted against the inner wall of the tube to leave a vapor space diameter of 17 mm. The prototype was instrumented and monitored. The measured wall temperature profiles for several heat-input levels are compared and discussed with the theoretical predictions. 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