大气与环境光学学报, 2019, 14 (3): 228, 网络出版: 2019-07-20
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
Temperature Measurement of CH4/Air Premixed Flat Flame Burner Based on Tunable Diode Laser Absorption Spectroscopy
可调谐半导体激光吸收光谱 水汽 温度 平焰炉 吸光度 tunable diode laser absorption spectroscopy water vapor temperature flat flame furnace absorbance
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。
Abstract
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 H2O by dual beam time dividing scanning strategy. The accurate inversion of the temperature is realized by two-line integral absorbance ratio, which meets the application needs of on-line temperature detection of the combustion field. The experimental research on real-time detection of flame temperature in CH4/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.
彭于权, 阚瑞峰, 许振宇, 夏晖晖, 聂伟, 张步强, 裴晓凡. 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[J]. 大气与环境光学学报, 2019, 14(3): 228. PENGYuquan, KAN Ruifeng, XU Zhenyu, XIA Huihui, NIE Wei, ZHANGBuqiang, PEI Xiaofan. Temperature Measurement of CH4/Air Premixed Flat Flame Burner Based on Tunable Diode Laser Absorption Spectroscopy[J]. Journal of Atmospheric and Environmental Optics, 2019, 14(3): 228.