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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Laminar Burning Velocity Measurement of SNG/Air Flames - A Comparison of Bunsen and Spherical Flame Method -

SNG/공기 화염의 층류 연소속도 측정 - 분젠과 구형 화염법 비교 -

  • KIM, DONGCHAN (Department of Aerospace Engineering, Sunchon National University) ;
  • LEE, KEEMAN (School of Mechanical and Aerospace Engineering, Sunchon National University)
  • 김동찬 (순천대학교(원) 우주항공공학과) ;
  • 이기만 (순천대학교 기계.우주항공공학부)
  • Received : 2016.12.04
  • Accepted : 2016.12.30
  • Published : 2016.12.30
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Abstract

This article describes a comparison on laminar burning velocity measured by Bunsen and spherical flame methods of synthetic natural gas (SNG) with various composition of hydrogen. In this study, the laminar burning velocity measurements were employed by Bunsen burner and cylindrical constant combustor at which flame images were captured by Schlieren system. These results were also compared with numerical based on CHEMKIN package with GRI 3.0, USC-II and UC Sandiego mechanism. In case of spherical flames, the suitable flame radius range and theoretical models were verified using the well-known previous results in methane/air flames. As an experimental condition, hydrogen content of SNG was adjusted 0% to 11%. Equivalence ratios of Bunsen flames were adjusted from 0.8 to 1.6. On the other hand, those of spherical flames were adjusted from 0.6 to 1.4, relatively. From results of this study, the both laminar burning velocities measured in Bunsen and spherical flame methods were resulted in similar tendency. As the hydrogen content increased, the laminar burning velocity also increased collectively. Laminar burning velocity of measured SNG-air flames was best coincided with GRI 3.0 mechanism by comparison of reaction mechanisms.

Keywords

References

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