不同颜色的本生灯火焰 秀 fuel rich fuel lean oereteamepetoaeanybiomegepeaios8ne8e8ngheaetahygeh 《燃烧学基础》6，层流预混火焰 陈正(z@pku.edu.cn)17 开口和闭口本生灯火焰 closed closed open (a) (b) RR。 teo 油 he9aenec 《燃烧学基础》6，层流预混火焰 陈正(a@pku.edu.cm)18 澦࢖䏝؅ׁक澧ͧࡗقஓ࡭䍡࢏ ୟࠔ I`&VQ[KJ[IT ࢏䍥䍡࣏ޯࣩЈբச৸  Different flame types of a Bunsen burner depend on oxygen supply. On the left a rich fuel with no premixed oxygen produces a yellow sooty diffusion flame; on the right a lean fully oxygen premixed flame produces no soot and the flame color is produced by molecular radicals, especially CH and C2 band emission. The purple color is an artifact of the photographic process. fuel rich fuel lean 澦࢖䏝؅ׁक澧ͧࡗقஓ࡭䍡࢏ ୟࠔ I`&VQ[KJ[IT ࢏䍥䍡࣏ޯՌ୊Ռոڏ  open closed closed open