Effects of catalyst segmentation with cavities on combustion enhancement of blended fuels in a micro channel

Effect of channel gap distance on the flame blow-off limit in mesoscale channels with cavities for premixed CH4/air flames

“…Catalytic combustion has also been demonstrated as viable in micro channels, as the catalyst can accelerate the reaction and suppress the radical depletion on the walls (Boyarko et al, 2005;Chen et al, 2007;Choi et al, 2008;Lee and Kim, 2009;Norton and Vlachos, 2004). Forming a recirculation zone or low velocity zone via structural design is another effective way to anchor the flame in small flow-reactors (Akram and Kumar, 2011;Li et al, 2012;Nehe and Kumar, 2013;Wan et al, 2012;Yang et al, 2015).…”

Development of a high-temperature and high-uniformity micro planar combustor for thermophotovoltaics application

“…Finally, the high performance operation of the PV cells could be maintained if the combustor wall temperature distribution is uniform. To date, notable numerical and experimental efforts including catalyst assisted [15][16][17][18], porous media inserted [19,20] and heat-recirculated micro-combustors [21][22][23][24][25][26] have been developed to meet the features above. Among these studies, the heat-recirculated micro-combustors are more attractive due to their relatively higher thermal efficiency and robust operation.…”

Numerical study of the behavior of methane-hydrogen/air pre-mixed flame in a micro reactor equipped with catalytic segmented bluff body

“…They asserted that the catalyst segmentation can increase performance and conversion ratio of a micro reactor by promotion of homogeneous combustion. Also, Li et al [19,20] showed that the presence of non-catalytic cavities on the wall of a catalytic micro reactor can promote the stable flame regimes in the micro reactor for a wide range of inlet velocities. Moreover, Di Benedetto et al [21] introduced a catalytic-homogeneous micro reactor.…”