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박준홍(Jun Hong Park),전충환(Choonghwan),조주형(Juhyeong Cho),심성훈(Sunghoon Shim),김한석(Hanseok Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
The present study has experimentally investigated the hydrogen effects in syn. gas fuel (CO, H2) and oxygen on the structure of swirl-stabilized flame in a lab-scale combustor (10 kW). Different swirlers have been investigated to identify the role of swirl strength to the incoming mixture. The flame stability was examined for the effect of hydrogen in syn gas fuel with different swirl strengths. This was carried out by comparing adiabatic flame temperatures at the lean flame limit of diluted CO2 gas flow rate. The combustion characteristics of the CO2 diluted syn. gas fuel flames have been examined at constant heat load but different swirl strengths with chemiluminescence diagnostics that provided information on structure of flame zone, respectively. The results show that the lean stability limit is not depend on swirl strength but extended by hydrogen additions. The chemiluminescence intensity is increased with increase of CO concentration because of CO2 chemiluminescence of flame. OH chemiluminescence intensity is diluted with increase of swirl strength by the internal recirculation flow.
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