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| 001 | 1023023 | ||
| 005 | 20250204113803.0 | ||
| 024 | 7 | _ | |a 10.1016/j.firesaf.2024.104110 |2 doi |
| 024 | 7 | _ | |a 0378-7761 |2 ISSN |
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| 100 | 1 | _ | |a Gnendiger, Christoph |0 P:(DE-Juel1)185003 |b 0 |u fzj |
| 245 | _ | _ | |a Extinction coefficients from aerosol measurements |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2024 |b Elsevier |
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| 520 | _ | _ | |a In this contribution, we develop a model that describes light extinction in the presence of arbitrary aerosols. In doing so, we take advantage of the fact that during measurements with the ELPI+-system, aerosol particles of any shape are internally mapped to spherical surrogates. The developed model is particularly simple and depends on only a few parameters, namely on densities and refractive indices of the measured aerosol particles. As proof of principle, the model is in first applications used to determine extinction coefficients and mass-specific extinction for an infrared light source with a peak wave length of 880 nm. Detailed studies concentrate on two aerosols exemplary for characteristic values of the input parameters: a paraffin aerosol in a bench-scale setup and soot from a flaming n-heptane fire in a room-scale setup (test fire TF5 according to EN54). As main results, we find values for mass-specific extinction that are different in the considered cases. Moreover, obtained results differ in part more than a factor of three from literature values typically used in practical applications. We explicitly assess reasons for deviations found and finally propose a simple way how future light-extinction studies can be performed comparatively easily using the ELPI+-system. |
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| 700 | 1 | _ | |a Schultze, Thorsten |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Börger, Kristian |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Belt, Alexander |0 P:(DE-Juel1)138417 |b 3 |u fzj |
| 700 | 1 | _ | |a Arnold, Lukas |0 P:(DE-Juel1)132044 |b 4 |e Corresponding author |
| 773 | _ | _ | |a 10.1016/j.firesaf.2024.104110 |g p. 104110 - |0 PERI:(DE-600)1483569-1 |p 104110 - |t Fire safety journal |v 146 |y 2024 |x 0378-7761 |
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