Characterizing and predicting nvPM size distributions for aviation emission inventories and environmental impact

Durdina, Lukas, Durand, Eliot ORCID: https://orcid.org/0000-0001-7498-1129, Edebeli, Jacinta, Spirig, Curdin, Brem, Benjamin T., Elser, Miriam, Siegerist, Frithjof, Johnson, Mark, Sevcenco, Yura A. ORCID: https://orcid.org/0000-0002-6489-9903 and Crayford, Andrew ORCID: https://orcid.org/0000-0002-6921-4141 2024. Characterizing and predicting nvPM size distributions for aviation emission inventories and environmental impact. Environmental Science and Technology 58 (24) , 10548–10557. 10.1021/acs.est.4c02538

PDF - Published Version Available under License Creative Commons Attribution. Download (3MB)

Abstract

Concerns about civil aviation’s air quality and environmental impacts have led to recent regulations on nonvolatile particulate matter (nvPM) mass and number emissions. Although these regulations do not mandate measuring particle size distribution (PSD), understanding PSDs is vital for assessing the environmental impacts of aviation nvPM. This study introduces a comprehensive data set detailing PSD characteristics of 42 engines across 19 turbofan types, ranging from unregulated small business jets to regulated large commercial aircraft. Emission tests were independently performed by using the European and Swiss reference nvPM sampling and measurement systems with parallel PSD measurements. The geometric mean diameter (GMD) at the engine exit strongly correlated with the nvPM number-to-mass ratio (N/M) and thrust, varying from 7 to 52 nm. The engine-exit geometric standard deviation ranged from 1.7 to 2.5 (mean of 2.05). The study proposes empirical correlations to predict GMD from N/M data of emissions-certified engines. These predictions are expected to be effective for conventional rich-burn engines and might be extended to novel combustor technologies if additional data become available. The findings support the refinement of emission models and help in assessing the aviation non-CO2 climate and air quality impacts.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	American Chemical Society
ISSN:	0013-936X
Date of First Compliant Deposit:	17 June 2024
Date of Acceptance:	30 May 2024
Last Modified:	29 Aug 2024 11:15
URI:	https://orca.cardiff.ac.uk/id/eprint/169850

Actions (repository staff only)

Edit Item