Investigation of laminar combustion characteristics of ozonized methane-air mixture in a constant volume combustion bomb

Shaobo Ji, Yang Li, Guohong Tian, Minglei Shu, Guorui Jia, Shaoqing He, Xin Lan and Yong Cheng

Energy, 2021, vol. 226, issue C

Abstract: The effect of ozone on the combustion performance of methane-air mixture was studied with a constant volume combustion bomb test bench under different initial pressures and equivalence ratios. The laminar combustion characteristic parameters were obtained according to the flame propagation images. The comparison of the laminar combustion characteristic parameters showed that the O-atom decomposed from ozone can promote the reaction activity of the mixture. Based on the Markstein length, it can be concluded that ozone can increase the flame instability of the mixture, also the flame thickness decreased with ozone addition due to the acceleration of chemical reaction. Both the laminar flame speed and laminar burning velocity increased with ozone addition, and the maximum relative increment of the parameters all appeared at the equivalence ratio of 0.6, which showed the ozone had a more notable enhancement effect for lean methane-air mixture. It was feasible to enhance the combustion performance for natural gas engine using lean burn combustion in principle.

Keywords: Methane; Ozone; Laminar combustion; High-speed photography; Constant volume combustion bomb (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:226:y:2021:i:c:s0360544221005983

DOI: 10.1016/j.energy.2021.120349

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