Experimental Investigation on Premixed Combustion Characteristics with Suction & Blow Fans

Suction과 blow fan을 이용한 연소기내의 부분 예혼합화염 연소 특성에 관한 실험적 연구

  • 강기발 (부산대학교 기계공학과 대학원) ;
  • 김동일 (부산대학교 기계공학과) ;
  • 오상헌 (부산대학교 기계기술연구소)
  • Published : 2002.06.30


We measured emission indices for $NO_x$, CO, temperature and radical characteristics for partially premixied flames formed by suction & blow fans air condition. At sufficiently high levels of partial premixing a double flame structure consisting of a rich premixed inner flame and outer diffusion flame was established similar to that previously observed in premixed flames. $NO_x$, Temperature. CO concentration were experimented with approximately constant air flow rate and decreasing equivalence ratios. The reduction in $NO_x$, and temperature at suction condition as compared with that for blow condition was approximately 20%, but on the contrary, CO emission was increased. In addition, We measured temperature distributions and found that temperature increased continuously with increasing partial premixing. We also estimated CH, $C_2$ radical intensity. CH and $C_2$ radicals provide evidence that, for the present measurement, CH and $C_2$ radicals intensity was associsated with their premixed component. And we observed stronger $C_2$, CH radicals intensity at suction conditions than blow conditions.