Research Information System
International Journal of Hydrogen Energy, 2025 (SCI-Expanded)
This paper presents the theoretical investigation of the combustion of syngas and hydrogen fuel mixture in the combustion chamber. Syngas and hydrogen were mixed as H0, H5, H10 and H15 at 0%, 5%, 10%, 15% and 20% by volume, respectively. The effect of the composition of the syngas and hydrogen fuel mixture on the emissions and thermodynamic variables was realized with equilibrium constants method. Comparative evaluations of the combustion products have been conducted in relation to variable hydrogen-enriched syngas and equivalence ratio. This study prefers municipal sewage sludge as the source of obtained syngas. The species and thermodynamic properties of syngas and hydrogen fuel mixture combustion are solved numerically by linearisation of the nonlinear equations of chemical kinetics. As a result of the study, it was determined that the highest CO2 formation occurred at equivalence ratio of 1.0. The amount of CO2 formed in H20 decreased by approximately 20% compared to H0. The adiabatic flame temperature varies between 1667 K and 2303 K for different hydrogen additions. The highest adiabatic flame temperature is reached under the condition that the equivalence ratio of 1.0 and H20. It was observed that CO2 emissions were reduced and NOX emissions increased with combustion temperature.