% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Gnendiger:1023023, author = {Gnendiger, Christoph and Schultze, Thorsten and Börger, Kristian and Belt, Alexander and Arnold, Lukas}, title = {{E}xtinction coefficients from aerosol measurements}, journal = {Fire safety journal}, volume = {146}, issn = {0378-7761}, address = {New York, NY [u.a.]}, publisher = {Elsevier}, reportid = {FZJ-2024-01606}, pages = {104110 -}, year = {2024}, abstract = {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.}, cin = {IAS-7}, ddc = {690}, cid = {I:(DE-Juel1)IAS-7-20180321}, pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs (SDLs) and Research Groups (POF4-511)}, pid = {G:(DE-HGF)POF4-5111}, typ = {PUB:(DE-HGF)16}, UT = {WOS:001199438400001}, doi = {10.1016/j.firesaf.2024.104110}, url = {https://juser.fz-juelich.de/record/1023023}, }