Abstract

An FT-IR (Fourier transform infrared) analyzer has been configured for combustion research and allows the simultaneous quantification of CO, CO₂, CH₄, C₂H₆, C₂H₂, C₂H₄, NO, and N₂O concentrations in the flame of natural gas burners. The calibration has been carried out by the multivariate PLS1 algorithm, with calculated standard spectra. For the multivariate CO/CO₂ model, special attention has been given to nonlinear effects caused by interference in the 2210-2250 cm^-1 region. For this model, two methods of calculating mixture spectra and their influence on prediction parameters are evaluated. Furthermore, the sensitivity of the CO/CO₂ model for N₂O interference has been tested. The presented results show that conclusions drawn from statistical prediction parameters should be treated cautiously in models that have to deal with spectral interference.

Mid-IR hyperspectral imaging of laminar flames for 2-D scalar values

Michael R. Rhoby, David L. Blunck, and Kevin C. Gross
Opt. Express 22(18) 21600-21617 (2014)

Quantitative determination of combustion intermediates with cavity ring-down spectroscopy: systematic study in propene flames near the soot-formation limit

Alexander Schocker, Katharina Kohse-Höinghaus, and Andreas Brockhinke
Appl. Opt. 44(31) 6660-6672 (2005)

H₂o absorption spectroscopy for determination of temperature and H₂O mole fraction in high-temperature particle synthesis systems

Paul V. Torek, David L. Hall, Tiffany A. Miller, and Margaret S. Wooldridge
Appl. Opt. 41(12) 2274-2284 (2002)

N₂ and CO vibrational CARS and H₂ rotational CARS spectroscopy of CH₄/N₂O flames

Kenneth Aron, Leonce E. Harris, and Joanne Fendell
Appl. Opt. 22(22) 3604-3611 (1983)

Diode laser sensor for measurements of CO, CO₂, and CH₄ in combustion flows

Radu M. Mihalcea, Douglas S. Baer, and Ronald K. Hanson
Appl. Opt. 36(33) 8745-8752 (1997)