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Energy and Exergy analysis in an asphalt plant's rotary dryer

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.contributor.authorPeinado, D.
dc.contributor.authorVega Blázquez, Mercedes de
dc.contributor.authorGarcía Hernando, Néstor
dc.contributor.authorMarugán Cruz, Carolina
dc.date.accessioned2012-02-08T12:16:19Z
dc.date.available2012-02-08T12:16:19Z
dc.date.issued2011-05
dc.description.abstractIn this paper, energy and exergy analyses of a rotary dryer employed in a Hot Mix Asphalt (HMA) plant for heating and drying of the aggregates in the mixture is presented. In the analysis, the exergy method in addition to the more conventional energy analysis, is employed to identify and evaluate the ther modynamic losses. The results show that, at design conditions, the plant performs with energy and exergy efficiencies of 0.89 and 0.18, respectively. The energy losses are mainly due to the flue gases. The exergy distribution indicates that the combustion and the heat transfer at different temperatures in the burner yield the highest exergy destruction in the process. A parametric study is conducted for the plant under various operational production parameters, including different humidities of the aggregates and filler content in aggregates, working temperatures and ambient conditions, in order to determine the parameters that affect the plant performance. It is shown that the solids humidity has a great impact on energy requirements. A better and sustainable use of the heat source employed in the dryer is proposed to avoid the high irreversibilities found. Furthermore, operating corrections in the mix or in the exhaust gas temperature are proposed to optimize the performance of the plant
dc.description.sponsorshipThis work has been has been partially funded by the Spanish Government, Project DPI2009 10518 and the Fenix project Research on new concepts for more safe and sustainable roads (CENIT 2007 1014). Also, the authors aknowledge the support provided by Intrame S.A
dc.description.statusPublicado
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationApplied Thermal Engineering, 2011, vol. 31, nº 6-7, p. 1039-1049
dc.identifier.doi10.1016/j.applthermaleng.2010.11.029
dc.identifier.issn1359-4311
dc.identifier.publicationfirstpage1039
dc.identifier.publicationissue6-7
dc.identifier.publicationlastpage1049
dc.identifier.publicationtitleApplied Thermal Engineering
dc.identifier.publicationvolume31
dc.identifier.urihttps://hdl.handle.net/10016/13280
dc.language.isoeng
dc.publisherElsevier
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.applthermaleng.2010.11.029
dc.rights©Elsevier
dc.rights.accessRightsopen access
dc.subject.ecienciaIngeniería Industrial
dc.subject.ecienciaFísica
dc.subject.otherExergy
dc.subject.otherExergy analysis
dc.subject.otherAsphalt plant
dc.subject.otherDrying
dc.subject.otherRotary dryer
dc.titleEnergy and Exergy analysis in an asphalt plant's rotary dryer
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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