Titel: Line parameters of NO and CO for laser diagnostics of novel fuels
Autoren: Seifert, Leopold, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.3, Physikalische Chemie
Agarwal, Sumit, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.3, Physikalische Chemie
Ramalingam, Ajoy, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.3, Physikalische Chemie
Fernandes, Ravi, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.3, Physikalische Chemie
Qu, Zhechao, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.3, Physikalische Chemie
Beitragende: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Seiten:1
Sprache:en
DOI:10.7795/810.20240410
Art der Ressource: Text / Poster
Herausgeber: Physikalisch-Technische Bundesanstalt (PTB)
Rechte: Download for personal/private use only, if your national copyright law allows this kind of use.
Daten: Verfügbar: 2024-04-10
Datei: Datei herunterladen (application/pdf) 494.74 kB (506616 Bytes)
MD5 Prüfsumme: e9cf2f27cc4ade0162573c298a0a20c9
SHA256 Prüfsumme: 0fb512a13ca9e35fe360754f7adb4937676780d9b39eb884d2bf79ebe105f26d
Schlagworte NO ; CO ; TDLAS ; line parameter ; renewable fuels
Zusammenfassung: The combustion behavior of novel fuels such as synthetic and biomass fuels is being heavily investigated to achieve environmental goals such as lowering carbon and NOx emissions. In order to understand the underlying chemical reaction mechanisms of such fuels it is essential to know the detailed information of reaction rates and rate constants, which require accurate and traceable measurements of concentrations of the involved chemical species, especially the short-lived intermediate/transient species (atoms, molecules, radicals).
Laser absorption spectroscopy (e.g., fixed-wavelength Tuneable Diode Laser Absorption Spectroscopy TDLAS) is one way to measure these species with high time resolution, which is utilized to capture the chemical processes in shock tubes or rapid compression machines.
Absolute concentration measurements are crucial for developing and validating comprehensive chemical mechanisms. The main objective of this work is to accurately determine spectral line parameters for reducing the uncertainties of the measurements and improve real-time diagnostics for concentration measurements in combustion processes and possibly help to improve reaction kinetic models. Mid-IR interband cascade lasers are employed to measure the NO and CO absorption profiles in a wide range of pressures, temperatures and gas mixture compositions. The N2, O2, CO2, H2, Ar, He pressure broadening coefficients of the NO and CO lines in the 1-0 band are reported. The newly measured pressure broadening coefficients provide important spectral reference data for applications in both combustion and environmental studies.