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dc.contributor.authorYang, Chun-Hsiangen_US
dc.contributor.authorWu, Di-Hanen_US
dc.contributor.authorChen, Chiun-Hsunen_US
dc.date.accessioned2014-12-08T15:07:49Z-
dc.date.available2014-12-08T15:07:49Z-
dc.date.issued2010en_US
dc.identifier.issn0961-5539en_US
dc.identifier.urihttp://hdl.handle.net/11536/6144-
dc.identifier.urihttp://dx.doi.org/10.1108/09615531011065575en_US
dc.description.abstractPurpose - Utilizing renewable energy and developing new energy sources are practical responses to the shortage of fossil fuels and environmental regulations for carbon dioxide emissions. The purpose of this paper is to assess the practicability of using low heating value (LHV) fuel on an annular miniature gas turbine (MGT) via numerical simulations. Design/methodology/approach - The MGT used in this study is MW-44 Mark I, whose original fuel is liquid (Jet A1). Its fuel supply system is re-designed to use biogas fuel with LHV. The simulations, aided by the commercial code CFD-ACE+, were carried out to investigate the cooling effect in a perforated combustion chamber and combustion behavior in an annular MGT when using LHV gas. In this study, four parameters of rotational speeds are considered. At each specific speed, various mixture ratios of methane (CH(4)) to carbon dioxide (CO(2)) including 90, 80, 70, and 60 percent were taken into consideration as simulated LHV fuels. Findings - The simulation results show the chamber design can create a proper recirculation zone to concentrate the flame at the center of the chamber, and prevent the flame from expanding to cause hot spot. Furthermore, the hot gas exhausted from combustor outlet is cooled down effectively by jet flow discharged from dilution holes, which prevent turbine blade from heat damage. Originality/value - Simulation results demonstrate that CFD-ACE+ can simulate flow field performance and combustion behavior in an annular MGT precisely. The results of these CFD analyses confirm that the methane fuel can be used in such small volume of MGT and still have high performance. With the aid of the constructed combustor model, the performance of a methane-used MGT can be realized before the experiment procedure starts.en_US
dc.language.isoen_USen_US
dc.subjectNatural gasen_US
dc.subjectTurbinesen_US
dc.subjectFuelsen_US
dc.subjectCombustion chambersen_US
dc.titleNumerical performance analysis of an annular miniature gas turbine power system using fuels with low heating valuesen_US
dc.typeArticleen_US
dc.identifier.doi10.1108/09615531011065575en_US
dc.identifier.journalINTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOWen_US
dc.citation.volume20en_US
dc.citation.issue6-7en_US
dc.citation.spage794en_US
dc.citation.epage810en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000283698100010-
dc.citation.woscount1-
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