Laser & Optoelectronics Progress, Volume. 55, Issue 5, 053003(2018)
Measurements of CO2 Temperature and Concentration in High Temperature Environment Based on Tunable Diode Laser Absorption Spectroscopy
Figures & Tables(11)
Fig. 1. Absorption line strength of (a) CO, (b) H2O and (c) CO2 in the wavelength range of 1-3 μm
Fig. 3. Simulated results of line pairs. (a) Line pair 1; (b) line pair 2; (c) line pair 3
Fig. 4. (a) Variations of line strength with temperature; (b) line strength ratio and their sensitivity with temperature
Fig. 6. (a) Spectral absorption signal and multi-peak fitting results using Voigt function and (b) fitting residual
Table 1. CO2 spectral absorption-line parameters
View tableTable 1. CO2 spectral absorption-line parameters
Line pair Center wavenumber ν 0 /cm-1Center wavelength λ /nmLine-intensity S 0 (T = 900 K) /(10-7 cm-2·Pa-1) Low transition energy E ″/cm-11 4990.418 2003.8402 2.81 2462.6758 4990.665 2003.7410 6.55 1276.4475 2 4995.9702 2001.6132 4.33 1702.4031 4995.9798 2001.6094 0.151 4059.1287 4995.9844 2001.6075 4.9 1586.8582 4996.1085 2001.5578 24.2 273.868 3 5001.4987 1999.4007 22.7 519.535 5001.9159 1999.2339 2.38 2193.5452 5001.9468 1999.2216 1.48 2551.011 5002.4869 1999.0057 21.8 578.0115
Table 2. Measured temperature under different operating conditions
View tableTable 2. Measured temperature under different operating conditions
Volume fraction of CO2/% Measured temperature /K 873 K 973 K 1073 K 1173 K 1273 K 10 881.6 994.4 1087.8 1160.0 1260.1 8 868.9 946.8 1055.6 1160.9 1284.6 6 890.7 996.7 1100.3 1205.7 1241.6 4 898.3 950.1 1042.1 1135.3 1228.6
Table 3. Deviation of measured temperatures with given temperature
View tableTable 3. Deviation of measured temperatures with given temperature
Volume fraction of CO2 /% Deviation /% 873 K 973 K 1073 K 1173 K 1273 K 10 0.98 2.20 1.38 -1.11 -1.01 8 -0.47 -2.70 -1.62 -1.03 0.91 6 2.03 2.44 2.55 2.79 -2.47 4 2.90 -2.35 -2.88 -3.21 -3.49
Table 4. Measured CO2 concentration under different operating conditions
View tableTable 4. Measured CO2 concentration under different operating conditions
Volume fraction of CO2/% Measured volume fraction of CO2 873 K 973 K 1073 K 1173 K 1273 K 10 9.90 9.80 9.86 10.14 10.20 8 8.12 8.15 8.09 8.17 8.14 6 6.12 6.18 6.08 6.11 5.89 4 4.12 3.87 3.89 3.85 3.87
Table 5. Deviation of measured CO2 concentration with given value under different operating conditions
View tableTable 5. Deviation of measured CO2 concentration with given value under different operating conditions
Volume fraction of CO2 /% Deviation /% 873 K 973 K 1073 K 1173 K 1273 K 10 -1.00 -2.00 -1.40 1.40 2.00 8 1.50 1.88 1.13 2.13 1.75 6 2.00 3.00 1.33 1.83 -1.83 4 3.75 -3.25 -4.75 -3.75 -3.25
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Haibin Cui, Fei Wang, Meiyi Li. Measurements of CO2 Temperature and Concentration in High Temperature Environment Based on Tunable Diode Laser Absorption Spectroscopy[J]. Laser & Optoelectronics Progress, 2018, 55(5): 053003
Paper Information
Category: Spectroscopy
Received: Oct. 13, 2017
Accepted: --
Published Online: Sep. 11, 2018
The Author Email: Haibin Cui (cuihaibin1991@zju.edu.cn)
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