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| Titel |
Particle Loss Calculator – a new software tool for the assessment of the performance of aerosol inlet systems |
| VerfasserIn |
S.-L. Weiden, F. Drewnick, S. Borrmann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 2, no. 2 ; Nr. 2, no. 2 (2009-09-03), S.479-494 |
| Datensatznummer |
250000563
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| Publikation (Nr.) |
 copernicus.org/amt-2-479-2009.pdf |
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| Zusammenfassung |
| Most aerosol measurements require an inlet system to transport aerosols from
a select sampling location to a suitable measurement device through some
length of tubing. Such inlet systems must be optimized to minimize aerosol
sampling artifacts and maximize sampling efficiency. In this study we
introduce a new multifunctional software tool (Particle Loss
Calculator, PLC) that can be used to quickly determine aerosol sampling
efficiency and particle transport losses due to passage through arbitrary
tubing systems. The software employs relevant empirical and theoretical
relationships found in established literature and accounts for the most
important sampling and transport effects that might be encountered during
deployment of typical, ground-based ambient aerosol measurements through a
constant-diameter sampling probe. The software treats non-isoaxial and
non-isokinetic aerosol sampling, aerosol diffusion and sedimentation as well
as turbulent inertial deposition and inertial deposition in bends and
contractions of tubing. This software was validated through comparison with
experimentally determined particle losses for several tubing systems bent to
create various diffusion, sedimentation and inertial deposition properties.
As long as the tube geometries are not "too extreme", agreement is
satisfactory. We discuss the conclusions of these experiments, the
limitations of the software and present three examples of the use of the
Particle Loss Calculator in the field. |
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