Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study

Jensen, Alexander C. Ø.; Dal Maso, Miikka; Koivisto, Antti J.; Belut, Emmanuel; Meyer-Plath, Asmus; Van Tongeren, Martie; Sánchez Jiménez, Araceli; Tuinman, Ilse; Domat, Maida; Toftum, Jørn; Koponen, Ismo K.

doi:10.3390/environments5050052

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Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study

Alexander C. Ø. Jensen

^1,*

²,

⁴

⁵,

Araceli Sánchez Jiménez

⁶

Ilse Tuinman

⁷,

Maida Domat

⁸,

Jørn Toftum

⁹

and

Ismo K. Koponen

¹⁰

The National Research Centre for the Working Environment, Lersø Parkallé 105, 2100 Copenhagen, Denmark

Aerosol Physics, Laboratory of Physics, Faculty of Natural Sciences, Tampere University of Technology, Korkeakoulunkatu 10, FI-33720 Tampere, Finland

Institut National de Recherche et de Sécurité (INRS), Rue du Morvan CS 60027, 54519 Vandoeuvre CEDEX, France

⁴

Bundesanstalt für Arbeitsschutz und Arbeitsmedizin, Nöldnerstr. 40-42, 10317 Berlin, Germany

⁵

Centre for Occupational and Environmental Health, The University of Manchester, Oxford Rd., Manchester M13 9PL, UK

⁶

Institute of Occupational Medicine, Research Ave N, Currie EH14 4AP, UK

⁷

TNO, Lange Kleiweg 137, 2288 GJ Rijswijk, The Netherlands

⁸

Instituto Tecnológico del Embalaje Transporte y LOGÍSTICA, C/Albert Einstein, 1, 46980 Paterna, Spain

⁹

Department of Civil Engineering, Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, 2800 Kongens Lyngby, Denmark

¹⁰

Force Technology, Park Allé 345, 2605 Brøndbyvester, Denmark

Author to whom correspondence should be addressed.

Environments 2018, 5(5), 52; https://doi.org/10.3390/environments5050052

Received: 19 February 2018 / Revised: 16 April 2018 / Accepted: 22 April 2018 / Published: 24 April 2018

(This article belongs to the Special Issue Air Quality Assessment for Environmental Policy Support: Sources, Emissions, Exposures and Health Impacts)

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Abstract

Models are increasingly used to estimate and pre-emptively calculate the occupational exposure of airborne released particulate matter. Typical two-box models assume instant and fully mixed air volumes, which can potentially cause issues in cases with fast processes, slow air mixing, and/or large volumes. In this study, we present an aerosol dispersion model and validate it by comparing the modelled concentrations with concentrations measured during chamber experiments. We investigated whether a better estimation of concentrations was possible by using different geometrical layouts rather than a typical two-box layout. A one-box, two-box, and two three-box layouts were used. The one box model was found to underestimate the concentrations close to the source, while overestimating the concentrations in the far field. The two-box model layout performed well based on comparisons from the chamber study in systems with a steady source concentration for both slow and fast mixing. The three-box layout was found to better estimate the concentrations and the timing of the peaks for fluctuating concentrations than the one-box or two-box layouts under relatively slow mixing conditions. This finding suggests that industry-relevant scaled volumes should be tested in practice to gain more knowledge about when to use the two-box or the three-box layout schemes for multi-box models. View Full-Text

Keywords: aerosol modelling; dispersion factor; geometry; chamber study; multiple boxes; occupational exposure

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MDPI and ACS Style

Jensen, A.C.Ø.; Dal Maso, M.; Koivisto, A.J.; Belut, E.; Meyer-Plath, A.; Van Tongeren, M.; Sánchez Jiménez, A.; Tuinman, I.; Domat, M.; Toftum, J.; Koponen, I.K. Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study. Environments 2018, 5, 52. https://doi.org/10.3390/environments5050052

AMA Style

Jensen ACØ, Dal Maso M, Koivisto AJ, Belut E, Meyer-Plath A, Van Tongeren M, Sánchez Jiménez A, Tuinman I, Domat M, Toftum J, Koponen IK. Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study. Environments. 2018; 5(5):52. https://doi.org/10.3390/environments5050052

Chicago/Turabian Style

Jensen, Alexander C.Ø., Miikka Dal Maso, Antti J. Koivisto, Emmanuel Belut, Asmus Meyer-Plath, Martie Van Tongeren, Araceli Sánchez Jiménez, Ilse Tuinman, Maida Domat, Jørn Toftum, and Ismo K. Koponen. 2018. "Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study" Environments 5, no. 5: 52. https://doi.org/10.3390/environments5050052

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