Influence of Air-Fuel Ratio and Air Temperature on Combustion Time of Air-Methane Mixtures in Stationary and Turbulent Condition (Contributo in atti di convegno)

Type
Label
  • Influence of Air-Fuel Ratio and Air Temperature on Combustion Time of Air-Methane Mixtures in Stationary and Turbulent Condition (Contributo in atti di convegno) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • *G.Langella, **A.F. Brancelli, **C. Mongiello, ***M. de Joannon (2003)
    Influence of Air-Fuel Ratio and Air Temperature on Combustion Time of Air-Methane Mixtures in Stationary and Turbulent Condition
    in Joint Meeting of The Scandinavian-Nordic and Italian Sections of The Combustion Institute, Ischia (Napoli), September 18-21, 2003
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • *G.Langella, **A.F. Brancelli, **C. Mongiello, ***M. de Joannon (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • *Dip. di Ing. Mecc. per l'Energetica- Universit√† Federico II, Naples -ITALY **ENEA - Casaccia, Rome - ITALY ***Istituto di Ricerche sulla Combustione - C.N.R., Naples - ITALY (literal)
Titolo
  • Influence of Air-Fuel Ratio and Air Temperature on Combustion Time of Air-Methane Mixtures in Stationary and Turbulent Condition (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 88-88104-04-6 (literal)
Abstract
  • Within the sphere of combustion processes in the electric power production systems, the development of techniques and innovative procedures plays a major part in the design and the management of energetic systems oriented to the protection of environment. The development of electric power production systems and CHP (combined heat & power) plants in the range of 5 up to hundreds of MW (electric) has been growing up basing on gas turbine technology, mostly burning methane. Particularly in gas turbine air-fuel global ratio is always in lean or very lean condition so the methodological approach to the analysis of combustion process is very complex also due to random parameters involved. A critical role is played by turbulence: its influence as well as on transport phenomena, is directly connected to the reduction of airflow and on the improvement of fuel air mixing. Chemical reactions and mixing are strongly influenced by turbulence intensity ([2]...[6]): that's why it's necessary to assign the right mixing condition for air fuel mixture in order to have a good combustion process. Another critical role is played by residence time in combustion chamber which must be very small in order to minimize chamber dimension and very high to reduce pollutant formation; the lean condition combustion doesn't allow to have short residence times so the burning process has to be divided into a number of steps, starting from a richer pilot flame and going on with lean premixed ones. (literal)
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