date: 14.09.2022

category: Sporočila za javnost


Researchers from Laboratory for Internal Combustion Engines (LICeM) published a paper in Journal of Environmental Management (IF=8.9) where they presented a novel concept for control of mixture reactivity in continuous combustion systems (burners, gas turbines). Innovative approach confirms the hypothesis that direct and spatially selective injection of inert and partially inert (CO2) gasses in regions with high heat release rates allows a precise control of temperature and concentration field in combustion chamber.

The presented concept of Spatially selective dilution control (SSDC) in combination with external exhaust gas recirculation has an undisputed impact on reduction of nitrous oxides (NOx) and particulate matter (PM) emissions. With targeted dilution of the combustible mixture, the adjustments of its reactivity are possible, which allows real-time adaptations and precise positioning of reactive zone by delaying or promoting the ignition process. The latter is a key functionality, which opens up a way to circumvent challenges associated with variable fuel composition, which is becoming progressively important particularly in the light of foreseen injection of hydrogen and synthetic methane in the gas grid. This is well known to impact the fuel reactivity in a much wider interval than with pure natural gas. The SSDC concept thus opens a way to widen the interval of allowable gas composition changes when feed to continuous combustion systems and by this ensuring higher uptake of renewables to industries and applications where defossilization is difficult to achieve.


Paper is a result of project ARRS Z2-1862 – Zero footprint combustion for green power generation (leader – assist. prof. Tine Seljak) and programme ARRS P2-0401 Energy engineering.

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