<div class="csl-bib-body">
<div class="csl-entry">Pfaller, C. (2018). <i>Nitrogen oxides and ammonia in a traffic tunnel - determination of emission factors</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2018.48845</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2018.48845
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/1796
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dc.description.abstract
Since the diesel affaire became popular in 2015 vehicular exhaust emissions of nitrogen oxides have gained considerable attention. Especially emission factors for nitrogen oxides provided in the “Handbook Emission Factors for Road Transport” (HBEFA) are questioned. The aim of this master thesis was to determine real-world emission factors for nitrogen oxides for the Austrian vehicular fleet and to compare them with values given in HBEFA and other literature. In addition, emission factors for ammonia were determined. Ammonia is used in latest diesel exhaust after-treatment systems, i.e. the selective catalytic reduction via aqueous urea. Ammonia plays an important role in the formation of secondary particulate matter and has influence on ecosystems due to its nitrogen input. For the determination of vehicular emission factors, a measurement campaign in tunnel Kaisermühlen was conducted. Concentration measurements of nitrogen oxides and ammonia inside as well as outside the tunnel were performed. The longitudinal air velocity was measured directly in the tunnel with an impeller anemometer. Traffic data included number and velocity of passenger cars and heavy-duty vehicles (HDVs) and was provided by ASFINAG. Concentrations of nitrogen oxides inside the tunnel show a diurnal trend with maxima during rush hours, the longitudinal air velocity also correlates well with traffic density. Regarding ammonia, no relation between concentration and traffic number is observable. Calculated emission factors for nitrogen oxides agree well with data given in HBEFA. Therefore, the HBEFA adequately reflects real-world vehicular emissions for the entire Austrian vehicular fleet as well as for passenger cars and HDVs separately. Lower emission factors for ammonia were found compared to the HBEFA as well as other emission factors given in literature. It has to be mentioned that the vehicular fleet in other tunnel studies are mainly powered with gasoline, whereas in Austria diesel is the most fuel used. Thus, indicating lower ammonia emissions of diesel-driven vehicles. However, further investigations are needed for proving this assumption.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Umweltanalytik
de
dc.subject
Emissionsmessung
de
dc.subject
Gasanalytik
de
dc.subject
environmental analysis
en
dc.subject
emission measurements
en
dc.subject
gas analyses
en
dc.title
Nitrogen oxides and ammonia in a traffic tunnel - determination of emission factors
en
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2018.48845
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Cornelia Pfaller
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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tuw.publication.orgunit
E164 - Institut für Chemische Technologien und Analytik
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dc.type.qualificationlevel
Diploma
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dc.identifier.libraryid
AC15044228
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dc.description.numberOfPages
73
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dc.identifier.urn
urn:nbn:at:at-ubtuw:1-113716
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dc.thesistype
Diplomarbeit
de
dc.thesistype
Diploma Thesis
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
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tuw.advisor.orcid
0000-0003-2736-2880
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item.languageiso639-1
en
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item.fulltext
with Fulltext
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item.openaccessfulltext
Open Access
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item.mimetype
application/pdf
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item.openairetype
master thesis
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item.grantfulltext
open
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item.openairecristype
http://purl.org/coar/resource_type/c_bdcc
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item.cerifentitytype
Publications
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crisitem.author.dept
E164 - Institut für Chemische Technologien und Analytik