Exergy analysis of a Bi fuel Si engine

dc.contributor.authorRezapour, K.
dc.contributor.authorEbrahimi, M.K.
dc.contributor.authorWood, A.S.
dc.date.accessioned2014-12-15T07:51:00Z
dc.date.available2014-12-15T07:51:00Z
dc.date.issued2012
dc.description.abstractPaper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.description.abstractThis paper characterizes the exergy (availability) analysis in the bi-fuel (CNG and gasoline) spark ignition engines. The engine is modeled using a quasi-dimensional (QD) two-zone thermodynamic analysis. The differential equations relating to the compression, combustion and the expansion are solved by an approximation method. The model includes the intake, exhaust processes and a turbulent combustion model. The engine model is capable of simulating the burn rate, and compared to the computational fluid dynamic (CFD) models is it considerably faster. The developed model is based upon the second law of thermodynamics, and exergy analysis terms. These terms includes thermo-mechanical availability, chemical availability, heat transfer availability, work availability, and the irreversible processes that are the source of destroyed availability. Finally, the effect of the availability, the first law of thermodynamics (FLT) and the second law of thermodynamics (SLT) efficiency of equivalence ratio, ignition time and engine speed are presented and discussed.en_ZA
dc.description.librariandc2014en_ZA
dc.format.extent7 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationRezapour, K, Ebrahimi, MK & Wood, AS 2012, Exergy analysis of a Bi fuel Si engine, Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.identifier.isbn9781868549863
dc.identifier.urihttp://hdl.handle.net/2263/43026
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.relation.ispartofHEFAT 2012en_US
dc.rightsUniversity of Pretoriaen_ZA
dc.subjectExergyen_ZA
dc.subjectBi-fuelen_ZA
dc.subjectCNGen_ZA
dc.subjectSpark ignition enginesen_ZA
dc.subjectQuasi-dimensionalen_ZA
dc.subjectTwo-zone thermodynamic analysisen_ZA
dc.subjectTurbulent combustion modelen_ZA
dc.subjectComputational fluid dynamicsen_ZA
dc.subjectCFDen_ZA
dc.subjectThermo-mechanical availabilityen_ZA
dc.subjectIgnition timeen_ZA
dc.subjectEngine speeden_ZA
dc.titleExergy analysis of a Bi fuel Si engineen_ZA
dc.typePresentationen_ZA

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