- Author
-
Wakatsuki, K.
|
Fuss, S. P.
|
Hamins, A.
|
Nyden, M. R.
- Title
- Technique for Extrapolating Absorption Coefficient Measurements to High Temperatures.
- Coporate
- Maryland Univ., College Park
Bureau of Alcohol, Tobacco and Firearms and Explosives, Beltsville, MD
National Institute of Standards and Technology, Gaithersburg, MD
- Sponsor
- National Research Council, Washington, DC
National Aeronautics and Space Administration, Washington, DC
National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- Combustion Institute, Symposium (International) on Combustion, 30th. Proceedings. Volume 30. Part 1. July 25-30, 2004,
Combustion Institute, Pittsburgh, PA,
Chicago, IL,
Chen, J. H.; Colket, M. D.; Barlow, R. S.; Yetter, R. A., Editors,
1565-1573 p.,
2005
- Keywords
-
combustion
|
high temperature
|
absorption
|
infrared spectroscopy
|
high temperature
|
absorption coefficients
|
extrapolation
|
equations
|
experiments
|
fuels
|
FT-IR
|
carbon monoxide
|
carbon dioxide
|
water vapor
|
propane
- Identifiers
- extrapolation data processing; accuracy assessment; summary of errors in the HITEMP extrapolations; Errors in the integrated absorption coefficients for propane at 1 cm¯1 resolution
- Abstract
- An extrapolation technique that provides semi-quantitative estimates for the infrared absorption coefficients of gaseous fuels at temperatures beyond those for which measurements are generally practical (>700 K) is presented. The new method is based on a simplified expression for molecular line intensities consisting of three fitting parameters and two variables (temperature and frequency). The accuracy of the extrapolations was tested first by comparing predictions of absorption coefficients for CO, CO2, and H2O vapor to the corresponding values obtained directly from the HITEMP molecular database. Finally, to establish the practical utility of the method, the spectrum of propane at 1000 K obtained from the extrapolation technique was compared to actual experimental measurements.