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대한기계학회 대한기계학회 논문집 B권 대한기계학회논문집 B권 제31권 제6호
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    초록·키워드

    An experimental study was performed to investigate the characteristics of chemiluminescence in a radiant burner, varying the excess air ratio from 0.91 to 1.67 at firing rate 80.5 to 134.2 ㎾/m2 on OH<SUP>*</SUP>, CH<SUP>*</SUP>, C₂<SUP>*</SUP> in LNG-Air premixed flames. The signals from electronically excited states of OH*, CH<SUP>*</SUP>, C₂<SUP>*</SUP> were detected using a Intensified Couple Charged Detector (ICCD) camera. The measurements of exhausted emission were made to investigate the correlation between chemiluminescence and emissions. The chemiluminescence intensity was increased with increase of firing rate like characteristics of NOx emission. NOx also increased with increase of firing rate and excess air ratio. It is found that effect of firing rate is more dominant excess air ratio NOx emission. The maximum chemiluminescence intensity occurs near the stoichiometric excess air ratio or lean conditions in case of high firing rate and the maximum intensity occurs rather than rich conditions in case of relatively low firing rate. Amount of NOx emission is maximum at near stoichiometric excess air ratio, which is chemiluminescence intensity is maximum.

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      UCI(KEPA) : I410-ECN-0101-2009-550-016692037