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학술저널
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대한기계학회 대한기계학회 논문집 B권 대한기계학회논문집 B권 제31권 제4호
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384 - 391 (8page)

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초록· 키워드

Hydrogen-blending effects in flame structure and NO emission behavior are numerically studied with detailed chemistry in methane-air counterflow diffusion flames. The composition of fuel is systematically changed from pure methane to the blending fuel of methane-hydrogen through H2 molar addition up to 30%. Flame structure, which can be described representatively as a fuel consumption layer and a H₂-CO consumption layer, is shown to be changed considerably in hydrogen-blending methane flames, compared to pure methane flames. The differences are displayed through maximum flame temperature, the overlap of fuel and oxygen, and the behaviors of the production rates of major species. Hydrogen-blending into hydrocarbon fuel can be a promising technology to reduce both the CO and CO₂ emissions supposing that NOx emission should be reduced through some technologies in industrial burners. These drastic changes of flame structure affect NO emission behavior considerably. The changes of thermal NO and prompt NO are also provided according to hydrogen-blending. Importantly contributing reaction steps to prompt NO are addressed in pure methane and hydrogen-blending methane flames.
#Chain Initiation Reaction(체인 개시 반응) #Global Strain Rate(전체신장률) #H₂-CO Consumtion Layer(H₂-CO 소모층) #Methane Consumption Layer(메탄소모층) #Prompt NO(프롬프트 NO) #Thermal NO(열적 NO)
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목차

  1. Abstract
  2. 1. 서론
  3. 2. 수치해석 기법
  4. 3. 결과 및 논의
  5. 4. 결론
  6. 후기
  7. 참고문헌

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