Jul. 2017

Article Contents

Chinese Optics> 2017> 10(4): 455-461.

ZHU Xiao-rui, LU Wei-ye, RAO Yu-zhou, LI Yue-sheng, LU Zhi-min, YAO Shun-chun. Selection of baseline method in TDLAS direct absorption CO2 measurement[J]. Chinese Optics, 2017, 10(4): 455-461. doi: 10.3788/CO.20171004.0455

Citation:

ZHU Xiao-rui, LU Wei-ye, RAO Yu-zhou, LI Yue-sheng, LU Zhi-min, YAO Shun-chun. Selection of baseline method in TDLAS direct absorption CO₂measurement[J].Chinese Optics, 2017, 10(4): 455-461.doi:10.3788/CO.20171004.0455

Citation:

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Selection of baseline method in TDLAS direct absorption CO₂measurement

doi:10.3788/CO.20171004.0455

ZHU Xiao-rui^{1, 3,},
LU Wei-ye²,
RAO Yu-zhou^{1, 3},
LI Yue-sheng²,
LU Zhi-min^{1, 3},
YAO Shun-chun^{1, 3,,}

1.
School of Electric Power, South China University of Technology, Guangzhou 510640, China
2.
Shunde Inspection Institute, Special Equipment Inspection and Research Institute of Guangdong Province, Foshan 528300, China
3.
Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Province, Guangzhou 510640, China

Funds:

Science and Technology Project of GDQTS2016ZT01

Project of "Guangdong Special Branch Plan "Science Young Talents2014TQ01N334

Guangzhou Pearl River Science and Technology Rising Star Special Project2014J2200054

More Information

Corresponding author:YAO Shun-chun, E-mail:epscyao@scut.edu.cn
Received Date:21 Feb 2017
Rev Recd Date:31 Mar 2017
Publish Date:01 Aug 2017

Abstract

Abstract

Based on the direct absorption measurement of absorption spectrum of tunable diode laser absorption spectroscopy (TDLAS) technology, the DFB laser of 1 580 nm center wavelength is chosen to detect the concentration of CO ₂in simulated flue gas at room temperature and atmospheric pressure. The concentration of CO ₂is computed by removing absorption peak fitting method and pure N ₂line fitting method, and the two computed results are compared. The results show that the maximum relative error of concentration is 2.64% for the pure N ₂line fitting method, and the mean square value is 1.69%; the maximum relative error of concentration got from the removing absorption peak fitting method is 9.81%, and the mean-square value is 7.81%. Using the method of pure N ₂line fitting method, the accuracy of concentration is greatly improved, so the method can provide baseline selection reference for CO ₂measurement.
- tunable diode laser absorption spectroscopy (TDLAS) technology,
- direct absorption,
- CO₂measurement,
- spectral analysis

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References (15)

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