A two phase flow nonlinear parameter estimation for capillary tube-suction line heat exchanger

dc.contributor.authorBarbazelli, Marcos Rogério [UNESP]
dc.contributor.authorSeixlack, André Luiz [UNESP]
dc.contributor.authorAparecido, João Batista [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:20:22Z
dc.date.available2014-05-27T11:20:22Z
dc.date.issued2001-12-01
dc.description.abstractHere we present two-phase flow nonlinear parameter estimation for HFC's flow through capillary tube-suction line heat exchangers, commonly used as expansion devices in small refrigeration systems. The simplifying assumptions adopted are: steady state, pure refrigerant, one-dimensional flow, negligible axial heat conduction in the fluid, capillary tube and suction line walls. Additionally, it is considered that the refrigerant is free from oil and both phases are assumed to be at the same pressure, that is, surface tension effects are neglected. Metastable flow effects are also disregarded, and the vapor is assumed to be saturated at the local pressure. The so-called homogeneous model, involving three, first order, ordinary differential equations is applied to analyze the two-phase flow region. Comparison is done with experimental measurements of the mass flow rate and temperature distribution along capillary tubes working with refrigerant HFC-134a in different operating conditions.en
dc.description.affiliationUniversidade Estadual Paulista Campus de Ilha Solteira Depto. de Engenharia Mecânica, Caixa Postal 31, 15385-000 Ilha Solteira - SP
dc.description.affiliationUnespUniversidade Estadual Paulista Campus de Ilha Solteira Depto. de Engenharia Mecânica, Caixa Postal 31, 15385-000 Ilha Solteira - SP
dc.format.extent601-605
dc.identifier.citationProceedings of the National Heat Transfer Conference, v. 1, p. 601-605.
dc.identifier.lattes8658860438651895
dc.identifier.lattes0201002648068135
dc.identifier.scopus2-s2.0-0348216473
dc.identifier.urihttp://hdl.handle.net/11449/66736
dc.language.isoeng
dc.relation.ispartofProceedings of the National Heat Transfer Conference
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCapillary tube
dc.subjectParameter estimation
dc.subjectTwo-phase flow
dc.subjectCapillary tubes
dc.subjectCondensation
dc.subjectDifferential equations
dc.subjectEnthalpy
dc.subjectEvaporators
dc.subjectGravitation
dc.subjectHeat conduction
dc.subjectRefrigeration
dc.subjectSurface tension
dc.subjectTemperature distribution
dc.subjectThermal conductivity
dc.subjectTorque
dc.subjectTwo phase flow
dc.subjectVapors
dc.subjectPressure gradients
dc.subjectThermostatic valves
dc.subjectHeat exchangers
dc.titleA two phase flow nonlinear parameter estimation for capillary tube-suction line heat exchangeren
dc.typeTrabalho apresentado em evento
unesp.author.lattes8658860438651895[2]
unesp.author.lattes0201002648068135
unesp.author.orcid0000-0003-2886-7290[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

Arquivos