NDLI: Combustion of Hydrogen Enriched Hydrocarbon Fuels in Vortex Trapped Combustor

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ghenai, Chaouki Zbeeb, Khaled
Copyright Year	2010
Abstract	Trapped vortex combustor represents an efficient and compact combustor for flame stability. Combustion stability is achieved through the use of cavities in which recirculation zones of hot products generated by the direct injection of fuel and air are created and acting as a continuous source of ignition for the incoming main fuel-air stream. Computational Fluid Dynamics analysis was performed in this study to test the combustion performance and emissions from the vortex trapped combustor when natural gas fuel (methane) is replaced with renewable and alternative fuels such as hydrogen and synthesis gas. The flame temperature, the flow field, and species concentrations inside the Vortex Trapped Combustor were obtained. The results show that hydrogen enriched hydrocarbon fuels combustion will result in more energy, higher temperature (14% increase when methane is replaced with hydrogen fuels) and NOX emissions, and lower CO2 emissions (50% decrease when methane is replaced with methane/hydrogen mixture with 75% hydrogen fraction). The NOX emission increases when the fraction of hydrogen increases for methane/hydrogen fuel mixture. The results also show that the flame for methane combustion fuel is located in the primary vortex region but it is shifted to the secondary vortex region for hydrogen combustion.
Starting Page	997
Ending Page	1003
Page Count	7
File Format	PDF
ISBN	9780791844441
DOI	10.1115/IMECE2010-39641
Volume Number	Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B
Conference Proceedings	ASME 2010 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2010-11-12
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Methane Hydrogen fuels Temperature Stability Computational fluid dynamics Hydrogen Carbon dioxide Ignition Combustion Fuels Flow (dynamics) Emissions Syngas Cavities Flames Vortices Nitrogen oxides Combustion chambers Natural gas
Content Type	Text
Resource Type	Article

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