2007 Fiscal Year Final Research Report Summary
Study on a laser probe measurement for precursors of nano-PM generated in combustion fields
| Project/Area Number |
18560190
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Gunma University |
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Principal Investigator |
AMAGAI Kenji Gunma University, Graduate School of Engineering, Department of Mechanical System Engineering, Associate Professor (20221731)
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| Project Period (FY) |
2006 – 2007
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| Keywords | Combustion / Flame / Laser measurement / Polycyclic aromatic hydrocarbon / Spectroscopy / Soot particle |
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| Research Abstract |
Nano meter size particulate matter (nano-PM) and polycyclic aromatic hydrocarbons (PANS) have harmful effects for human health. Investigations of fundamental characteristic of formation behavior of PAHs in combustion process were required for the reduction of nano-PM emission. In this study, PAHs characteristics in diffusion flames of liquid and gas fuels were investigated using laser diagnostic and gas sampling methods. Methane (CH_4), propane (C_3H_8) and hexane (C_6H_<14>) were used as the test fuels. A laser induced fluorescence (LIF) method was used to obtain the spatial distributions of PAHs, which were precursor molecules of soot particles. Spatial distributions of soot were also measured by a laser induced incandescence (LII) method. A transition region from PAHS to soot was discussed from the results of LIF and LIL Further, PAH concentrations in the test flames were measured using a gas chromatography (GC). Profiles of PAHs concentrations of test flames were compared. As the results, it was found that the low carbon number fuels such as propane and methane are remained to some fuel at downstream part. And, these some fuels were changed to large PAHs at downstream part. Moreover, it was confirmed that relatively small PAHs species such as benzene and toluene existed in looting region, however, the larger PAHs such as fluorine and pyrene could not be observed in the sooting region.
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Research Products
(7 results)
