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dc.contributor.authorSilva Huerta, Alex Alberto
dc.contributor.authorSanzovo Fiorelli, Flávio Augusto
dc.contributor.authorde Mattos Silvares, Otávio
dc.date.accessioned2024-10-15T21:07:36Z
dc.date.available2024-10-15T21:07:36Z
dc.date.issued2007
dc.identifier.issn0894-1777
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-34447534239&doi=10.1016%2fj.expthermflusci.2006.10.002&partnerID=40&md5=27857b617b4808285d9d10f4163203cd
dc.identifier.urihttps://repositorio.maua.br/handle/MAUA/1175
dc.description.abstractThis work presents the results of an experimental study with pure refrigerants R-134a and R-600a and refrigerant-oil mixtures flowing through capillary tubes in order to analyse the metastable flow. A large number of experiments were carried out to verify the influence of several variables on the underpressure of vaporization, mainly the inlet subcooling, internal diameter and inlet pressure. Capillary tubes with internal diameter of 0.69 mm and 0.82 mm were tested for condensation temperatures between 40 °C and 50 °C and subcooling degrees between 3 °C and 12 °C. Measurements for oil concentrations of 1% and 3% were conducted and compared with those for pure refrigerant R-134a. The oil influence on the metastable flow was tested and the effect on the underpressure of vaporization is addressed for lower oil concentrations. © 2006 Elsevier Inc. All rights reserved.en
dc.description.sponsorshipFAPESP
dc.languageInglêspt_BR
dc.relation.ispartofExperimental Thermal and Fluid Science
dc.rightsAcesso Restrito
dc.sourceScopusen
dc.subjectCapillary tubesen
dc.subjectExperimental analysisen
dc.subjectMetastable flowen
dc.subjectRefrigerationen
dc.subjectCondensationen
dc.subjectFlow of fluidsen
dc.subjectPressure effectsen
dc.subjectRefrigerantsen
dc.subjectVaporizationen
dc.subjectInlet pressureen
dc.subjectOil concentrationsen
dc.titleMetastable flow in capillary tubes: An experimental evaluationen
dc.typeArtigo de Periódicopt_BR
dc.identifier.doi10.1016/j.expthermflusci.2006.10.002
dc.description.affiliationMauá Institute of Technology, 09580-900 Sao Caetano do Sul, SP, Praça Mauá no. 1, Brazil
dc.description.affiliationIMENSU - Mairiporã Institute of Technology, 076000-000 - Mairiporã (SP), Rodovia Fernão Dias Km 67, Brazil
dc.description.affiliationUniversity of São Paulo, Mechanical Engineering Department, Cidade Universitária, 05508-900 São Paulo, SP, Av. Prof. Mello Moraes, 2231, Brazil
dc.identifier.scopus2-s2.0-34447534239
dc.citation.issue8
dc.citation.epage966
dc.citation.spage957
dc.citation.volume31


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