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Proceedings Paper

Hot exhaust gases with passive FTIR emission spectroscopy
Author(s): Joerg Heland; Klaus Schaefer; Rainer Haus
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Paper Abstract

Passive FTIR emission spectroscopy using a commercial medium resolution instrument with a telescope has been applied to analyze the hot exhaust gases of various combustion sources, such as industrial and building smoke stacks, aircraft engines, flares, and forest fires. To interpret the remotely measured spectra a multi-layer, line-by-line spectra retrieval software using the molecular spectral databases HITRAN and HITEMP has been developed, validated and successfully used to determine the exhaust gas temperatures and the concentrations of CO2, H2O, CO, N2O, CH4, NO, NO2, SO2, and HCl for different combustion conditions of the sources. In this paper the feasibility and the setup of passive IR measurements, the basic theory of radiative transfer and special features of the commercially available spectra analysis code are described. In addition, the results of the different measurement applications are summarized.

Paper Details

Date Published: 15 December 1998
PDF: 9 pages
Proc. SPIE 3493, Spectroscopic Atmospheric Environmental Monitoring Techniques, (15 December 1998); doi: 10.1117/12.332637
Show Author Affiliations
Joerg Heland, Fraunhofer-Institut fuer Atmosphaerische Umweltforschung (Germany)
Klaus Schaefer, Fraunhofer-Institut fuer Atmosphaerische Umweltforschung (Germany)
Rainer Haus, DLR Institute of Planetary Exploration (Germany)


Published in SPIE Proceedings Vol. 3493:
Spectroscopic Atmospheric Environmental Monitoring Techniques
Klaus Schaefer, Editor(s)

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