An Experimental Study on the $CH_4{\;}/{\;}Air{\;}/{\;}CO_2$ Counterflow Diffusion Flame

$CH_4{\;}/{\;}Air{\;}/{\;}CO_2$ 대향류 확산화염에 대한 실험적 연구

The effect of adding carbon dioxide to methane-air flame was investigated experimentally. Measurements included extinction limits, flame temperature and photographic investigation of flame. A diffusion flame was stabilized between counterflowing streams of methane diluted with carbon dioxide and air diluted with carbon dioxide. Extinction limits and temperature for such flames were measured over a wide parametric range and were compared with those for other flames that fuel or oxidant was diluted with nitrogen or argon. The experimental results indicate that extinction phenomena can be explained by thermal effect and as an amount of carbon dioxide in fuel or oxidant increases, greatly as compared with other flames flame-temperature falls and flame-thickness is reduced.