NITROGEN_SPECIES_MEASUREMENT.pdf (767.84 kB)
Nitrogen species measurement investigation using two different FTIR
conference contribution
posted on 2016-08-08, 10:47 authored by Nilton Li, Ashraf El-HamalawiAshraf El-Hamalawi, Richard Barrett, Andrew D. Wheatley, Jonathan RobinsonCurrent diesel engine after-treatment systems, such as Selective Catalyst Reduction (SCR), use ammonia (NH3) to
reduce the Oxides of Nitrogen (NOx) into Nitrogen (N2) and water; however, if the reaction between ammonia and NOx
unbalance this can lead either ammonia or NOx being released into the environment. Ammonia is classified as dangerous
compound for the environment; therefore, accurate measurement of ammonia is essential. Fourier Transform Infrared (FTIR)
is one of the most common method used to measure raw emissions from engine exhaust pipes, due to its capability to measure
multi-type emissions at the same time. However, not many FTIRs that can measure gas from engine exhaust, and most of them
has different characteristics and specifications. These can affect the emission measurement from exhaust pipes and lead to
uncertainties in meeting compliance demands. The work of this paper compares two FTIR that have different specifications.
These FTIRs, have been compared under well controlled laboratory conditions. The concentration of ammonia and NOx from
diesel engines has been measured under different engine load and speed. The ammonia readings from each FTIR are plotted
into a graph and analysed, the results show that one of the FTIR produces a lower reading compare to the other FTIR. A
Chemical Luminance Detector (CLD) was used to measure the NOx and then compared with both FTIRs. After analysed those
dataset, the results clearly show the FTIR specification can affect the emission measurement from diesel engines exhaust.
History
School
- Architecture, Building and Civil Engineering
Published in
18th IASTEM International ConferencePages
24 - 29Citation
Li, N. ...et al., 2016. Nitrogen species measurement investigation using two different FTIR. Presented at the 18th IASTEM International Conference, Berlin, Germany, 29 th March, pp. 24-29.Publisher
International Academy of Science, Technology, Engineering and ManagementVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2016-03-07Publication date
2016Notes
This is a conference paper.ISBN
9789385973857Language
- en