Flame stabilization between two beds of alumina balls in a porous burner

Catalytic combustion of premixed methane/air in a two-zone perovskite-based alumina pileup-pellets burner with different pellet diameters

“…The local temperature and species distributions showed that the structure of submerged flames involved a broad reaction zone and the temperature distributions revealed that the reaction zone moved upstream as the firing rate increased. Bubnovich et al [5,6] experimentally and numerically studied lean methane-air mixtures combustion in a porous media combustor formed by two beds of different sizes of alumina balls. Results concluded that the pollutants emissions increased and the stable combustion regions enlarged with increase in equivalence ratio.…”

Performance characterization of a medium-scale liquefied petroleum gas cooking stove with a two-layer porous radiant burner

“…Bubnovich et al [10] developed a porous media combustor formed by two beds of different sizes of alumina balls. They reported the stability range of flame propagation for different flow rates of air-fuel mixture.…”

The combustion mitigation of methane as a non-CO 2 greenhouse gas

“…There has been an extensive body of theoretical and experimental research on combustion using porous burners including the usage of catalysts, e.g. [28][29][30][31][32]. However, the controlling mechanisms still need to be better understood and the development of reliable models specifically for ultra-lean combustion in practical burners remains challenging.…”

“…Heat is recovered via the thermal energy of the exhaust gases or radiant heating from the porous solid [27][28][29][30][31][32] The stability of the oxidation/combustion process to fluctuations in fuel concentration and flow rate, the development of reliable models for ultra-lean combustion, as well as optimising burner performance for lean-burn applications TFRR Recuperative combustion using flow reversal to transfer the heat of combustion to the incoming air via a solid heat storage medium [15] Similar to those for porous burners, with design optimisation of the regenerative beds for heat recuperation CFRR In the context of low concentration CH 4 oxidation/combustion, the concept of moderate or intense low-oxygen dilution (MILD) combustion [37] is relevant. The interest in MILD combustion has been mainly driven by the needs for low emission and high efficiency combustion.…”