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Towards a two-part train traffic emissions factor model for airborne wear particles
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).ORCID iD: 0000-0002-8000-0013
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi.ORCID iD: 0000-0003-1291-8778
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).ORCID iD: 0000-0003-0696-7506
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0003-2489-0688
2019 (English)In: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 67, p. 67-76Article in journal (Refereed) Published
Abstract [en]

In 2017 a new railway tunnel containing two stations opened in Stockholm, Sweden. A series of field measurements were carried out on the platforms in this tunnel before and after it was opened for normal traffic. These measurements were used to investigate the contribution of airborne particle emissions from wear processes to total train emissions. This field data was used to develop a two-part train traffic emission factor model for PM10. The two parts are the accumulative effect term (relating to operating distance such as wheel-rail contact and overhead electric line sliding contact) and a brake effect term (relating to the number of braking operations such as brake disc and brake pad contact). The results show that operating a single trial train at a higher than normal frequency on an otherwise empty platform increases the platform particulate concentration until the concentration reaches a steady value. The model suggests that brake emissions account for about 50% of the total emissions measured in the tunnels.

Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 67, p. 67-76
Keywords [en]
Airborne particle, Emission factor, Railway tunnel, Wear particle emission, Brakes, Electric lines, Railroads, Rails, Wear of materials, Emission factors, Field measurement, Overhead electric lines, Railway tunnels, Stockholm, Sweden, Wear particles, Wheel-rail contacts, Railroad tunnels, atmospheric pollution, concentration (composition), emission inventory, particulate matter, quantitative analysis, railway transport, traffic emission, wear, Stockholm [Stockholm (CNT)], Stockholm [Sweden], Sweden
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-248230DOI: 10.1016/j.trd.2018.11.006ISI: 000464890900005Scopus ID: 2-s2.0-85056898654OAI: oai:DiVA.org:kth-248230DiVA, id: diva2:1304318
Note

QC 20190411

Available from: 2019-04-12 Created: 2019-04-12 Last updated: 2019-05-13Bibliographically approved

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Tu, MinghuiCha, YingyingWahlström, JensOlofsson, Ulf

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Machine Design (Div.)TribologiMachine Design (Dept.)
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