基于吸收光谱原理的高温水汽浓度测量方法研究

Translated title of the contribution: Study of high temperature water vapor concentration measurement method based on absorption spectroscopy

Jiu-ying Chen, Jian-guo Liu, Jun-feng He, Ya-bai He, Guang-le Zhang, Zhen-yu Xu, Qiang Gang, Liao Wang, Lu Yao, Song Yuan, Jun Ruan, Yun-hai Dai, Rui-feng Kan

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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 concentration 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 absorption 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 temperature is in accordance with theoretical reasoning, concentration measurement standard error is less than 0.2%, and the relative error is less than 6%. The feasibility of this measuring method is verified by experiment.

Original languageChinese
Pages (from-to)3174-3177
Number of pages4
JournalGuang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Volume34
Issue number12
DOIs
Publication statusPublished - 1 Dec 2014
Externally publishedYes

Bibliographical note

Title in Pinyin: jī yú xī shōu guāng pǔ yuán lǐ dí gāo wēn shuǐ qì nóng dù cè liáng fāng fǎ yán jiū

Keywords

  • Model method
  • Tunable diode laser absorption spectroscopy
  • Water vapor concentration

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