Experimental aspects of partially premixed pulsating combustion

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dc.contributor.authorFerreira, Daniel Silva [UNESP]
dc.contributor.authorLacava, Pedro Teixeira
dc.contributor.authorFerreira, Marco Aurélio
dc.contributor.authorDe Carvalho Jr., João Andrade [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSão José dos Campos
dc.contributor.institutionCachoeira Paulista
dc.contributor.institutionEnergy Department
dc.contributor.institutionPropulsion Department
dc.contributor.institutionCombustion and Propulsion Associated Laboratory
dc.date.accessioned2014-05-27T11:21:46Z
dc.date.available2014-05-27T11:21:46Z
dc.date.issued2005-12-27
dc.description.abstractThe pulsating combustion process has won interest in current research due to indications that its application in energy generation can offer several advantages, such as: fuel economy, reduced pollutants formation, increased rate of convective heat transfer and reduced investment, when compared with conventional techniques. An experimental study has been conducted with the objective of investigating the effects of combustion driven acoustic oscillations in the emission rates of combustion gases, especially carbon monoxide and nitrogen oxides. The experiments were conducted in a water-jacketed 1-m long by 25-cm internal diameter stainless steel vertical tube. The combustor operated with liquefied petroleum gas (LPG) in both oscillatory and non oscillatory conditions, under the same input conditions. Part of the reactant mixture was excited acoustically, before the burner exit, by a speaker positioned strategically. The burner was aligned with the chamber longitudinal axis and positioned at its bottom. The experiments were conducted for 0.16 g/s of LPG burning in stoichiometric equivalence ratio. The main conclusions were: a) the pulsating combustion process produces more uniform fuel/air profile than the non pulsating process, b) close to stoichiometric equivalence ratio the pulsating combustion process generates higher rates of NO x; c) the frequency has a strong influence in NO x emission, but the pressure amplitude has a weak influence; d) the presence of the acoustic field may change drastically the combustion gas emissions in diffusion flames, but in pre-mixed flames the influence is not as strong.en
dc.description.affiliationUniversidade Estadual Paulista, Guaratingueta, Sao Paulo, 12516-410
dc.description.affiliationInstituto Tecnológico de Aeronáutica São José dos Campos, São Paulo, 12228-900
dc.description.affiliationInstituto Nacional de Pesquisas Espaciais Cachoeira Paulista, São Paulo, 12630-000
dc.description.affiliationEnergy Department
dc.description.affiliationPropulsion Department
dc.description.affiliationCombustion and Propulsion Associated Laboratory
dc.description.affiliationUnespUniversidade Estadual Paulista, Guaratingueta, Sao Paulo, 12516-410
dc.format.extent411-420
dc.identifierhttp://dx.doi.org/10.2514/6.2005-5555
dc.identifier.citationCollection of Technical Papers - 3rd International Energy Conversion Engineering Conference, v. 1, p. 411-420.
dc.identifier.doi10.2514/6.2005-5555
dc.identifier.lattes1663295770796752
dc.identifier.scopus2-s2.0-29144461992
dc.identifier.urihttp://hdl.handle.net/11449/68700
dc.language.isoeng
dc.relation.ispartofCollection of Technical Papers - 3rd International Energy Conversion Engineering Conference
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAcoustic oscillations
dc.subjectConvective heat transfer
dc.subjectEmission rates
dc.subjectEnergy generation
dc.subjectLongitudinal axis
dc.subjectPulsating combustion process
dc.subjectReduced pollutants formation
dc.subjectStainless steel vertical tube
dc.subjectAcoustic fields
dc.subjectCarbon monoxide
dc.subjectEffluents
dc.subjectFuel burners
dc.subjectFuel economy
dc.subjectHeat transfer
dc.subjectLiquefied petroleum gas
dc.subjectNitrogen oxides
dc.subjectStainless steel
dc.subjectStoichiometry
dc.subjectCombustion
dc.titleExperimental aspects of partially premixed pulsating combustionen
dc.typeTrabalho apresentado em evento
unesp.advisor.lattes1663295770796752

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