Abstract
Landfill gas (LFG) produced from depletion of biological waste has the potential to become one of the main energy resources in the future. In this study, laminar burning velocity (ul), Markstein length, and flammability limits of different compositions of landfill gas (LFG) are measured using the Schlieren flame front visualization method in an 11 liter constant volume combustion chamber. Three common compositions of LFG with carbon dioxide (CO2) volumetric fraction of fuel ranging from 0.3 to 0.5 are examined. Pressure was changed from atmospheric pressure to 5 bar with an increment of 2 bar. The effects of equivalence ratio, pressure, and CO2 content of fuel on laminar burning velocity are investigated, and rich and lean burn limits of different compositions of fuel are obtained. Numerical investigation is also performed using the CHEMKIN package via GRI3.0 and UBC2.1 chemical kinetic mechanisms. The results indicate that increasing the pressure reduces laminar burning velocity, whereas it increases the...
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