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TDLAS measures chemical species in methane flames, suggesting potential for Halon replacements.
Tunable diode laser absorption spectroscopy (TDLAS) is proving to be a valuable tool for monitoring chemical species in combustion environments. TDLAS is being used to characterize low pressure, premixed methane/oxygen/argon flames inhibited with candidate Halon replacement agents and Halon 1301 (CF3Br). Species concentration profiles are measured spectroscopically by either direct absorption or derivative spectroscopy. Species temperature profiles are measured spectroscopically using Two-Line Thermometry, and flame temperature is measured with fine wire thermocouples. The results of recent studies using the diode laser technique are discussed.
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Daniel et al. (1995) studied this question.
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