Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Combustion and Heat Transfer in Premixed Impinging Flames of Syngas(H2/CO)/Air Part I: Characteristics of Combustion

합성가스(H2/CO)/공기 예혼합 충돌화염의 연소 및 열전달 연구 Part I: 연소특성

  • Jeong, Byeonggyu (Graduate School of Sunchon National Univ.) ;
  • Lee, Yongho (School of Mechanical and Automotive Engineering of Chonnam Nat. Unv.) ;
  • Lee, Keeman (School of Mechanical and Aerospace Engineering, Sunchon Nat. Univ.)
  • Received : 2014.02.01
  • Accepted : 2014.02.28
  • Published : 2014.02.28
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Abstract

The characteristics of flame shape, laminar burning velocity, emissions and heat flux of stagnation point in premixed impinging jet flame of syngas fuel with 10% hydrogen content were experimentally investigated. Also, the adiabatic temperature and burning velocity are calculated by Chemkin package with USC-II mechanism. The equivalence ratios(0.8~5.0) and dimensionless separation distance(2.0~5.0) with fixed Reynolds number(1800) are main parameters in this work. Different flame shapes and colors were observed for different impingement conditions. The experimental results of burning velocity by flame surface area have a consistent with previous works and numerical simulation of this work. The inner flame length could be predicted with the ratio of mixture velocity and burning velocity from a simple formulation by the laminar burning velocity definition. It has been observed that the heat fluxes at stagnation point are directly affected by the flame shape including the separation distance. The emission results in impinging flame of syngas fuel show that the characteristics of $NO_x$ emission traced well with adiabatic temperature trend and CO emission due to fuel rich condition increased continuously with respect to the equivalence ratio.

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References

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Cited by

  1. /CO)/Air Part II: Heat Transfer Characteristics vol.25, pp.1, 2014, https://doi.org/10.7316/KHNES.2014.25.1.059
  2. A Study on the Lifted Flame Structure with Strain Rates in Premixed Impinging Jet Flames of Syngas (H2/CO) vol.26, pp.4, 2015, https://doi.org/10.7316/KHNES.2015.26.4.347