CAJ | 학술논문

基于吸收光谱原理的高温水汽浓度测量方法研究
기우흡수광보원리적고온수기농도측량방법연구
Study of High Temperature Water Vapor Concentration Measurement Method Based on Absorption Spectroscopy

万方数据

光谱学与光谱分析光譜學與光譜分析 광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年 12期 3174-3177 ,共4页

陈玖英%刘建国%何俊峰%何亚柏%张光乐%许振宇%王强%王辽%姚路%袁松%阮俊%戴云海%阚瑞峰

진구영%류건국%하준봉%하아백%장광악%허진우%왕강%왕료%요로%원송%원준%대운해%감서봉

可调谐半导体激光吸收光谱%水汽浓度%模型求解法可調諧半導體激光吸收光譜%水汽濃度%模型求解法
가조해반도체격광흡수광보%수기농도%모형구해법
Tunable diode laser absorption spectroscopy%Water vapor concentration%Model method

可调谐半导体激光吸收光谱（tunable diode laser absorption spectroscopy ，简称为TDLAS）技术具有高灵敏度、快速响应、非接触式、环境适应性强等优点，能够实现燃烧温度、组分浓度、速度等参量的实时动态在线测量。为准确测量高温下的水汽浓度，采用窄带半导体激光器作为光源，结合实验室的高温测量系统，记录了常压下1.39μm附近水汽在773～1273 K温度范围内的吸收光谱，利用多线组合非线性最小二乘法拟合得到高温吸收光谱的吸光度，找出了两条适合高温水汽浓度测量的吸收线7154.35和7157.73 cm －1，首次提出高温水汽浓度测量的模型求解方法，该方法测得的高温下水汽浓度符合理论推理，浓度测量的标准误差低于0.2％，相对误差低于6％。通过实验验证了该测量方法的可行性。
가조해반도체격광흡수광보（tunable diode laser absorption spectroscopy ，간칭위TDLAS）기술구유고령민도、쾌속향응、비접촉식、배경괄응성강등우점，능구실현연소온도、조분농도、속도등삼량적실시동태재선측량。위준학측량고온하적수기농도，채용착대반도체격광기작위광원，결합실험실적고온측량계통，기록료상압하1.39μm부근수기재773～1273 K온도범위내적흡수광보，이용다선조합비선성최소이승법의합득도고온흡수광보적흡광도，조출료량조괄합고온수기농도측량적흡수선7154.35화7157.73 cm －1，수차제출고온수기농도측량적모형구해방법，해방법측득적고온하수기농도부합이론추리，농도측량적표준오차저우0.2％，상대오차저우6％。통과실험험증료해측량방법적가행성。
Tunable diode laser absorption spectroscopy (TDLAS ) has been developed to realize the real-time and dynamic measurement of the combustion temperature ,gas component concentration ,velocity and other flow parameters ,owing to its high sensitivity ,fast time response ,non-invasive character and robust nature .In order to obtain accurate water vapor concentra-tion at high temperature ,several absorption spectra of water vapor near 1.39 μm from 773 to 1 273 K under ordinary pressure were recorded in a high temperature experiment setup using a narrow band diode laser .The absorbance of high temperature ab-sorption spectra was calculated by combined multi-line nonlinear least squares fitting method .Two water vapor absorption lines near 7 154.35 and 7 157.73 cm -1 were selected for measurement of water vapor at high temperature .A model method for high temperature water vapor concentration was first proposed .Water vapor concentration from the model method at high tempera-ture is in accordance with theoretical reasoning ,concentration measurement standard error is less than 0.2% ,and the relative er-ror is less than 6% .The feasibility of this measuring method is verified by experiment .