Abstract
In this study, numerical methods were used to assess the effects of adding hydrogen and varying the equivalence ratios on the combustion and emission properties of a non-premixed combustor. The results revealed that the additions of H2 and varying Φs significantly affected the flame configuration and emission characteristics. An elevation in the H2 vol. Promotes fuel combustion, yielding a higher flame temperature and a wider flammability region. Lower Φs and increased H2 vol. Significantly decrease CO and CO2 emissions by 87.48% and 96.63% respectively. Conversely, NOx emissions increase with higher H2 vol. and Φs due to the catalytic effect of elevated flame temperature. At Φ = 0.2 and 50 vol% of H2, outlet temperature and pattern factor were enhanced by 61.66% and 30.16% respectively. Under these conditions, NOx emission was calculated by a factor of 74.14. Investigation emphasizes hydrogen-enriched fuels’ potential for enhancing combustion and emissions control through vol. and equivalence ratios.
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