Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study about The Effect of Solid Particle Seeding on Thermal Characteristics of Hydrogen Flame

고체 입자첨가가 수소화염의 열특성에 미치는 영향에 관한 실험적 연구

  • 김중주 (한국과학기술원 대학원 항공우주공학) ;
  • 백승욱 (한국과학기술원 항공우주공학전공) ;
  • 김한석 (한국과학기술원 항공우주공학전공) ;
  • 최준원 (한국과학기술원 대학원 항공우주공학)
  • Published : 2002.11.01
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Abstract

From the view of the environmental protection against the use of fossil fuels, a great of efforts have been exerted to find an alternative energy source. Hydrogen may become an alternative However the product species of the hydrogen flame is only $H_2O$, which emits only non-luminous radiation so the radiation from it is much smaller than that for a hydrocarbon flame. In this study, the authors designed and fabricated a laboratory scale test furnace to study thermal characteristics of hydrogen-air diffusion flame. In addition. the effects of addition of reacting as welt as non-reacting solid particles were experimentally investigated. Among the total heat flux to the wall, about 75 % was occupied by radiation while 25% by convection. When the aluminum oxide (Al$_2$O$_3$) particles were added, the radiative heat flux was reduced due to heat blockage effects. On the other hand, the total as well as the radiative heat flux was increased when the carbon particles were seeded, since the overall temperature increased. The effects of swirl and excess air ratio were also examined.

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References

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