The applicability of photoacoustic measurement technique for qualitative investigation of diesel emission
In our work parallel measurement of wavelength dependent optical absorption, size distribution and number-concentration were produced using multi wavelength photoacoustic spectrometer (4λ-PAS) and scanning mobility particle sizer (SMPS). For comparative study two different fuel type was tested at th...
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| Dokumentumtípus: | Könyv része |
| Megjelent: |
University of Szeged
Szeged
2021
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| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
27 |
| Kulcsszavak: | Kvantumelektronika |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/75946 |
| Tartalmi kivonat: | In our work parallel measurement of wavelength dependent optical absorption, size distribution and number-concentration were produced using multi wavelength photoacoustic spectrometer (4λ-PAS) and scanning mobility particle sizer (SMPS). For comparative study two different fuel type was tested at three different working points of the engine. The thermal evolution of the emission was also examined using thermodenuder (TD) unit. Bimodal size distribution of emissions at reference temperature was achieved using pure petroleum-based fuel (B0). The OAC values measured at the operating wavelengths of the instrument decreased with increasing rev and rated torque at all wavelengths. The wavelength dependence quantified by Aerosol Angström Exponent (AAE) can be used here for qualitative analysis of carbon emission and showed increased volatility of organic particles towards higher temperatures. |
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| Terjedelem/Fizikai jellemzők: | 134-137 |
| ISBN: | 978-963-306-835-9 |