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26 January 2016 Direct absorption spectroscopy sensor for temperature and H2O concentration of flat flame burner
Jin-hu Duan, Xing Jin, Guang-yu Wang, Dong-sheng Qu
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Proceedings Volume 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015; 979614 (2016) https://doi.org/10.1117/12.2228075
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held November 2015, 2015, Various, China
Abstract
A tunable diode laser absorption sensor, based on direct absorption spectroscopy and time division multiplexing scheme, was developed to measure H2O concentration and temperature of flat flame burner. At the height of 15mm from the furnace surface, temperature and concentration were measured at different equivalence ratios. Then the distance between the laser and the furnace surface was changed while the equivalence ratio was fixed at 1 and experiments were performed to measure temperature and H2O concentration at every height. At last flame temperatures and H2O concentrations were obtained by simulation and computational analysis and these combustion parameters were compared with the reference. The results showed that the experimental results were in accordance with the reference values. Temperature errors were less than 4% and H2O component concentration errors were less than 5%and both of them reached their maximum when the equivalent ratio was set at 1. The temperature and H2O concentration increased with the height from furnace surface to laser when it varied from 3mm to 9mm and it decreased when it varied from 9mm to 30mm and they reached their maximum at the height of 9mm. Keywords: tunable diode laser, direct absorption spectroscopy
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Jin-hu Duan, Xing Jin, Guang-yu Wang, and Dong-sheng Qu "Direct absorption spectroscopy sensor for temperature and H2O concentration of flat flame burner", Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 979614 (26 January 2016); https://doi.org/10.1117/12.2228075
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KEYWORDS
Temperature metrology
Absorption spectroscopy
Combustion
Sensors
Absorbance
Absorption
Error analysis
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