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논문 기본 정보

자료유형
학술대회자료
저자정보
Daehee Kim (한국과학기술원) Junggoo Hong Hyundong Shin (한국과학기술원) Sangmin Choi (한국과학기술원)
저널정보
한국연소학회 KOSCO SYMPOSIUM 논문집 제38회 KOSCO SYMPOSIUM 논문집
발행연도
2009.5
수록면
213 - 219 (7page)

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초록· 키워드

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Combustion characteristics of a partially premixed flame in a dump combustor were studied to determine the effects of hydrogen enrichment in propane. A bluff-body was used for flame stabilization. Fuel mixtures of hydrogen mole fraction ranging from 0.1 to 0.5 were burnt at ambient pressure within a quartz chamber. Tests were carried out keeping the total reactants flow rate by adjusting the fuel and air flow rates. Fluctuations of pressure were measured by a piezoelectric pressure sensor. Instantaneous flame structure and OH chemiluminescence images were caprured by a High-speed Intensified Charged Coupled Device (HICCD) camera and Intensified Charged Coupled Device (ICCD) camera. It is shown that hydrogen enrichment in propane induces increase of the frequency and amplitude of pressure fluctuations. Flame existence region seems to be very alike, but instantaneous flame behavior for one cycle showed a different moving tendency according to hydrogen enrichment. Also, location of primary reaction zone was changed from the inner recirculation zone to the turbulent shear layer. The reason is that hydrogen-enriched flame has more fast chemical reaction rate compared to the propane flame so chemical aspects take precedence over flow aspects in the hydrogen-enriched flame.

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ABSTRACT
1. Introduction
2. Experimental Setup and Method
3. Results and Discussion
4. Conclusion
Acknowledgement
References

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