Reductions of PAH and Soot by Center Air Injection
Abstract
:1. Introduction
2. Experimental Section
2.1. Triple Port Burner
2.2. Measurement System
3. Results
3.1. Appearance of Flame
3.2. PAH and Soot Profiles
3.3. PAH and Soot Amounts
4. Discussion
5. Conclusions
- (1)
- In the triple port burner, two different blue flames are observed near the burner rim, followed by the bright luminous flames with soot. The flame length determined by the luminous flame zone is longer when the fuel flow velocity is increased. On the other hand, the flame length is decreased with an increase in the internal air flow velocity;
- (2)
- Two separate PAH and soot regions are observed. PAH exists between two soot regions, because PAH is a precursor substance of soot. Amounts of PAH and soot of the triple port burner are much smaller than those of the double port burner. Based on the correlation between PAH and soot, the exponential factor turns to be 1.6;
- (3)
- Since the fuel is consumed only in one diffusion flame, the fuel consumption rate of the double port burner is relatively lower. On the other hand, in the case of the tripe port burner, the fuel consumption is largely promoted, because two air flows are supplied to form inner and outer flames. Moreover, even at the same external air flow velocity, the fuel consumption is promoted by increasing the internal air flow velocity, resulting in the shorter flame length. Hence, the center air jet plays an important role for the promotion of fuel consumption. As a result, in comparison with the double port burner, amounts of PAH and soot are largely reduced.
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Yamamoto, K.; Takemoto, M. Reductions of PAH and Soot by Center Air Injection. Environments 2014, 1, 42-53. https://doi.org/10.3390/environments1010042
Yamamoto K, Takemoto M. Reductions of PAH and Soot by Center Air Injection. Environments. 2014; 1(1):42-53. https://doi.org/10.3390/environments1010042
Chicago/Turabian StyleYamamoto, Kazuhiro, and Masahiro Takemoto. 2014. "Reductions of PAH and Soot by Center Air Injection" Environments 1, no. 1: 42-53. https://doi.org/10.3390/environments1010042
APA StyleYamamoto, K., & Takemoto, M. (2014). Reductions of PAH and Soot by Center Air Injection. Environments, 1(1), 42-53. https://doi.org/10.3390/environments1010042