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The Experimental Study on Simultaneous Measurements of $O_2$ Concentration and Temperature of Flue Gas Using a Single Diode Laser  

Kim, Se-Won (한국생산기술연구원 에너지시스템연구그룹)
Shin, Myoung-Chul (한국생산기술연구원 에너지시스템연구그룹)
Lee, Chang-Yeop (한국생산기술연구원 에너지시스템연구그룹)
Youn, Sung-Woon (한국생산기술연구원 에너지시스템연구그룹)
Kim, Young-Il (포항산업과학연구원 에너지자원연구본부)
Publication Information
Journal of the Korean Society of Combustion / v.17, no.1, 2012 , pp. 12-21 More about this Journal
Abstract
Simultaneous measurements of oxygen concentration and temperature using diode laser in the combustion environment are successfully accomplished. A single DFB type diode laser of 760 nm line centre frequency is used and the scanned-wavelength direct absorption spectroscopy method and wavelength modulation spectroscopy method are applied to measure absorption signals below 793 K temperature region. The experimental results show that oxygen concentration are measured within 1% accuracy and temperature are measured within 5% accuracy. This new method of simultaneous measurements of concentration and temperature with a single diode laser shows a great promise.
Keywords
Gas analyzer; Single diode laser; Direct Absorption Spectroscopy(DAS); Wavelength Modulation Spectroscopy(WMS); Oxygen concentration; Temperature;
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