基于可调谐半导体激光吸收光谱技术的甲烷/空气预混平焰炉温度测量
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摘要
燃烧场温度的测量对于燃烧诊断具有重要意义.开展了基于可调谐半导体激光吸收光谱(Tunable diode laser absorption spectroscopy, TDLAS)的在线测温方法研究,基于双光束分时扫描技术,实现了双激光器协同工作与燃烧产物水汽7154.35 cm~(-1)和7467.77 cm~(-1)两条吸收谱线的同时测量,并利用双线积分吸光度比值关系完成温度的精确反演,满足燃烧场温度在线检测应用需要.开展了针对甲烷/空气预混平焰炉火焰温度的实时检测实验研究,并与热电偶进行了测温对比分析,两种方法的测量具有较好的一致性,相对误差小于3.8%,验证了TDLAS技术对燃烧场温度非侵入式快速测量的可行性和可靠性.
Temperature measurement is significant for combustion diagnosis. An on-line temperature measurement method based on tunable diode laser absorption spectroscopy(TDLAS) has been developed, which achieves dual laser cooperative work and simultaneous measurement of two absorption lines(7154.35 cm~(-1) and 7467.77 cm~(-1)) of combustion product H_2 O by dual beam time dividing scanning strategy. The accurate inversion of the temperature is realized by two-line integral absorbance ratio, which meets theapplication needs of on-line temperature detection of the combustion field. The experimental research on real-time detection of flame temperature in CH_4/air premixed flame furnace was carried out, and the results were compared with the thermocouple measurement, which shows TDLAS and thermocouples have good consistency with relative error less than 3.8%. The feasibility and reliability of non-intrusive and rapid temperature measurement of the combustion field based TDLAS technology have been verified.
Temperature measurement is significant for combustion diagnosis. An on-line temperature measurement method based on tunable diode laser absorption spectroscopy(TDLAS) has been developed, which achieves dual laser cooperative work and simultaneous measurement of two absorption lines(7154.35 cm~(-1) and 7467.77 cm~(-1)) of combustion product H_2 O by dual beam time dividing scanning strategy. The accurate inversion of the temperature is realized by two-line integral absorbance ratio, which meets theapplication needs of on-line temperature detection of the combustion field. The experimental research on real-time detection of flame temperature in CH_4/air premixed flame furnace was carried out, and the results were compared with the thermocouple measurement, which shows TDLAS and thermocouples have good consistency with relative error less than 3.8%. The feasibility and reliability of non-intrusive and rapid temperature measurement of the combustion field based TDLAS technology have been verified.
引文
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[11] Li Fei, Yu Xilong, Chen Lihong,et al. Temperature and water vapour concentration measurements of CH4/Air premixed flat flame based on TDLAS[J]. Journal of Experiments in Fluid Mechanics, 2009, 23(2):40-44(in Chinese).李飞,余西龙,陈立红,等.TDLAS测量甲烷/空气预混平面火焰温度和H20浓度[J].实验流体力学,2009,23(2):40-44.
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[2] Xu Zhenyu, Liu Wenqing, Kan Ruifeng, et al. Temperature measurements based on tunable diode laser absorption spectroscopy[J]. Acta Physica Sinica, 2012, 61(23):234204(in Chinese).许振宇,刘文清,阚瑞峰,等.基于可调谐半导体激光器吸收光谱的温度测量方法研究[J].物理学报,2012, 61(23):234204.
[3] Ma L H,Lau L Y, Ren W. Non-uniform temperature and species concentration measurements in a laminar flame using multi-band infrared absorption spectroscopy[J]. Applied Physics B, 2017, 123(3):1-9.
[4] Gardner J L, Jones T P, Davies M R. A six-wavelength radiation pyrometer[J]. High Temperatures High Pressures,1981, 13:459-466.
[5] Dai Jingmin,Shi Yiguo, Kang Weimin, et al. Multispectral true temperature measurement for ablative materials[J]. Journal of Astronautics, 1996, 17(3):25-30(in Chinese).戴景民,石义国,康为民,等.烧蚀材料的多光谱真温测量方法[J].宇航学报,1996, 17(3):25-30.
[6] Eckbreth A C, Dobbs G M,Stufflebeam J H, et al. CARS temperature and species measurements in augmented jet engine exhausts[J]. Applied Optics, 1984, 23(9):1329-1340.
[7] Zhang Lirong, Hu Zhiyun, Zhang Zhenrong, et al. Temperature measurement in stable combustion field with one-dimensional used CARS[J]. High Power Laser and Particle Beams, 2006, 18(12):2035-2038(in Chinese).张立荣,胡志云,张振荣,等.一维非稳腔空间增强探测CARS技术对稳态燃烧场温度的测量[J].强激光与粒子束,2006, 18(12):2035-2038.
[8] Schulz C, Sick V. Tracer-LIF diagnostics:quantitative measurement of fuel concentration, temperature and fuel/air ratio in practical combustion systems[J]. Progress in Energy and Combustion Science, 2005, 31(1):75-121.
[9] Webber M E, Wang J, Sanders S T, et al. In situ combustion measurements of CO, CO_2, H_2O and temperature using diode laser absorption sensors[J]. Proceedings of the Combustion Institute, 2000, 28(1):407-413.
[10] Xu Zhenyu. Research on Temperature Measurement and 2D Distribution for Transient Combustion Process by Infrared Absorption Spectroscopy[D]. Hefei:Doctorial Dissertation of Hefei Institute of Physical Science, Chinese Academy of Sciences, 2012(in Chinese).许振宇.瞬态燃烧过程红外激光光谱温度场测量与重构方法研究[D].合肥:中国科学院合肥物质科学研究院博士论文,2012.
[11] Li Fei, Yu Xilong, Chen Lihong,et al. Temperature and water vapour concentration measurements of CH4/Air premixed flat flame based on TDLAS[J]. Journal of Experiments in Fluid Mechanics, 2009, 23(2):40-44(in Chinese).李飞,余西龙,陈立红,等.TDLAS测量甲烷/空气预混平面火焰温度和H20浓度[J].实验流体力学,2009,23(2):40-44.
[12] Gordon I E, Rothman L S, Hill C, et al. The HITRAN2016 molecular spectroscopic database[J]. Journal of Quantitative Spectroscopy and Radiative Transfer, 2017, 203:3-69.
[13] Zhou X, Jeffries J B, Hanson R K. Development of a fast temperature sensor for combustion gases using a single tunable diode laser[J]. Applied Physics B, 2005, 81(5):711-722.
[14] Zhang Guangle. Research on Measurement Method for One-Dimensional Temperature Non-Uniformity Based on Multiple-Line[D]. Hefei:Doctorial Dissertation of University of Chinese Academy of Sciences, 2016(in Chinese).张光乐.基于多吸收线TDLAS的一维温度不均匀性测量方法研究[D].合肥:中国科学院大学博士论文,2016.
[15] Shaddix C R. Correcting thermocouple measurements for radiation loss:a critical review[R]. Sandia National Labs,CA(US),1999.