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

摘要/Abstract

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。

关键词: 可调谐半导体激光吸收光谱, 水汽, 温度, 平焰, 吸光度

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 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 the application 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.

Key words: tunable diode laser absorption spectroscopy, water vapor, temperature, flat flame furnace, absorbance

中图分类号:

O433.5

彭于权1,2,阚瑞峰1,许振宇1,夏晖晖1,聂伟1,2,张步强1,2, 裴晓凡1. 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.

PENG Yuquan1,2, KAN Ruifeng1, XU Zhenyu1, XIA Huihui1, NIE Wei1,2, ZHANG Buqiang1,2, PEI Xiaofan1. Temperature Measurement of CH₄/Air Premixed Flat Flame Burner Based on Tunable Diode Laser Absorption Spectroscopy[J]. Journal of Atmospheric and Environmental Optics.

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