Fourier Transform Infrared Analysis of Combustion Gases

Abstract

The Federal Aviation Administration (FAA) has developed a unique extractive Fourier Transform Infrared (FTIR) system to analyze rapidly changing moist fire gas concentrations as a function of time. The system was designed to eliminate numerous errors generated by state-of-the-art FTIR systems for fire gas analysis. In addition, the path length, cell volume, sample flow rate, and system temperature were optimized to provide a rapid response and a sufficient dynamic range to detect gas concentrations generated in the cone calorimeter. A nonlinear classical least squares method was developed to analyze the FTIR data and generate the concentration histories and confidence limits of the 16 fire gases. Results of the technique are presented for flaming and nonflaming combustion tests of a mix of six common plastics.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2001
Accession Number
ADA397377

Entities

People

  • Louise C. Speitel

Organizations

  • United States Department of Transportation

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Detection
  • Detectors
  • Dynamic Response
  • Flow Rate
  • Infrared Spectroscopy
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Measurement
  • Plastics
  • Reliability
  • Resins
  • Spectra
  • Spectroscopy
  • Stainless Steel
  • Thermoplastic Resins

Readers

  • Analytical Chemistry
  • Approximation Theory.
  • Fire Suppression Systems Design.