Mid-Infrared Polarization Spectroscopy Measurements of Species Concentrations and Temperature in a Low-Pressure Flame

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Mid-Infrared Polarization Spectroscopy Measurements of Species Concentrations and Temperature in a Low-Pressure Flame. / Sahlberg, Anna-Lena; Hot, Dina; Lyngbye Pedersen, Rasmus; Zhou, Jianfeng; Aldén, Marcus; Li, Zhongshan.

I: Applied Spectroscopy, Vol. 73, Nr. 6, 2019, s. 653-664.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Mid-Infrared Polarization Spectroscopy Measurements of Species Concentrations and Temperature in a Low-Pressure Flame

AU - Sahlberg, Anna-Lena

AU - Hot, Dina

AU - Lyngbye Pedersen, Rasmus

AU - Zhou, Jianfeng

AU - Aldén, Marcus

AU - Li, Zhongshan

PY - 2019

Y1 - 2019

N2 - Quantitative measurements of CH4 mole fractions at different HAB in the flame were realized by a calibration measurement in a low pressure gas flow of N2 with a small admixture of known amount of CH4. A comprehensive study of the collision effects on the IRPS signal was performed in order to quantify the flame measurement. The concentration and temperature measurements were found to agree reasonably well with simulations using Chemkin. These measurements We demonstrate quantitative measurements of CH4 mole fractions in a low pressure fuel-rich premixed dimethyl ether/oxygen/argon flat flame (Φ =1.87, 37 mbar) using mid-infrared polarization spectroscopy (IRPS). Non-intrusive in situ detection of CH4, C2H2 and C2H6 in the flame was realized by probing the fundamental asymmetric C-H stretching vibration bands in the respective molecules in the spectral range 2970-3340 cm-1. The flame was stabilized on a McKenna-type porous plug burner hosted in a low pressure chamber. The temperature at different heights above the burner (HAB) was measured from the line ratio of temperature sensitive H2O spectral lines recorded using IRPS. prove the potential of IRPS as a sensitive, non-intrusive, in situ technique in low pressure flames.

AB - Quantitative measurements of CH4 mole fractions at different HAB in the flame were realized by a calibration measurement in a low pressure gas flow of N2 with a small admixture of known amount of CH4. A comprehensive study of the collision effects on the IRPS signal was performed in order to quantify the flame measurement. The concentration and temperature measurements were found to agree reasonably well with simulations using Chemkin. These measurements We demonstrate quantitative measurements of CH4 mole fractions in a low pressure fuel-rich premixed dimethyl ether/oxygen/argon flat flame (Φ =1.87, 37 mbar) using mid-infrared polarization spectroscopy (IRPS). Non-intrusive in situ detection of CH4, C2H2 and C2H6 in the flame was realized by probing the fundamental asymmetric C-H stretching vibration bands in the respective molecules in the spectral range 2970-3340 cm-1. The flame was stabilized on a McKenna-type porous plug burner hosted in a low pressure chamber. The temperature at different heights above the burner (HAB) was measured from the line ratio of temperature sensitive H2O spectral lines recorded using IRPS. prove the potential of IRPS as a sensitive, non-intrusive, in situ technique in low pressure flames.

U2 - 10.1177/0003702818823239

DO - 10.1177/0003702818823239

M3 - Article

VL - 73

SP - 653

EP - 664

JO - Applied Spectroscopy

T2 - Applied Spectroscopy

JF - Applied Spectroscopy

SN - 1943-3530

IS - 6

ER -