Lasers, Fiber Optics, and Communications

Reconstruction of combustion temperature and gas concentration distributions using line-of-sight tunable diode laser absorption spectroscopy

[+] Author Affiliations
Zhirong Zhang, Hua Xia, Xiaojuan Cui, Bian Wu, Yu Wang

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Anhui Provincial Key Laboratory of Photonic Devices and Materials, Shushanhu Road No. 350, Hefei, Anhui, 230031, China

Pengshuai Sun, Tao Pang, Zhe Li, Luo Han, Fengzhong Dong

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Anhui Provincial Key Laboratory of Photonic Devices and Materials, Shushanhu Road No. 350, Hefei, Anhui, 230031, China

University of Science and Technology of China, School of Environment Science and Optoelectronic Technology, Jinzhai Road No. 96, Hefei, Anhui 230026, China

Markus W. Sigrist

Institute for Quantum Electronics, ETH Zurich, Schafmattstr. 16, 8093 Zurich, Switzerland

Opt. Eng. 55(7), 076107 (Jul 19, 2016). doi:10.1117/1.OE.55.7.076107
History: Received February 27, 2016; Accepted June 29, 2016
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Abstract.  Spatial temperature and gas concentration distributions are crucial for combustion studies to characterize the combustion position and to evaluate the combustion regime and the released heat quantity. Optical computer tomography (CT) enables the reconstruction of temperature and gas concentration fields in a flame on the basis of line-of-sight tunable diode laser absorption spectroscopy (LOS-TDLAS). A pair of H2O absorption lines at wavelengths 1395.51 and 1395.69 nm is selected. Temperature and H2O concentration distributions for a flat flame furnace are calculated by superimposing two absorption peaks with a discrete algebraic iterative algorithm and a mathematical fitting algorithm. By comparison, direct absorption spectroscopy measurements agree well with the thermocouple measurements and yield a good correlation. The CT reconstruction data of different air-to-fuel ratio combustion conditions (incomplete combustion and full combustion) and three different types of burners (one, two, and three flat flame furnaces) demonstrate that TDLAS has the potential of short response time and enables real-time temperature and gas concentration distribution measurements for combustion diagnosis.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Zhirong Zhang ; Pengshuai Sun ; Tao Pang ; Hua Xia ; Xiaojuan Cui, et al.
"Reconstruction of combustion temperature and gas concentration distributions using line-of-sight tunable diode laser absorption spectroscopy", Opt. Eng. 55(7), 076107 (Jul 19, 2016). ; http://dx.doi.org/10.1117/1.OE.55.7.076107


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