High-resolution transmission measurements of CO2 at high temperatures for industrial applications

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High-resolution transmission spectra of CO2 in the 2.7,4.3 and 15 μm regions at temperatures up to 1773 K and at approximately atmospheric pressure (1.00 ± 0.01atm) are measured and compared with line-by-line calculations based on the HITEMP-1995, HITEMP-2010, CDSD-HITEMP and CDSD-4000 databases. The spectra have been recorded in a high-temperature flow gas cell and using a Fourier transform infrared (FTIR) spectrometer at a nominal resolution of 0.125 cm-1. The volume fractions of CO2 in the measurements were 1,10 and 100%. The measurements have been validated by comparison with medium-resolution data obtained by Bharadwaj and Modest [6]. The deviations between the experimental spectra and the calculations at 1773 K and the vibrational energy exchange and thermal dissociation of CO2 at high temperatures are discussed.

Original languageEnglish
JournalJournal of Quantitative Spectroscopy & Radiative Transfer
Pages (from-to)2222–2233
Publication statusPublished - 2012


  • High temperature
  • Carbon dioxide
  • Transmittance
  • FTIR spectroscopy
  • High-temperature flowgascell
  • CDSD


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