A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature
Ethylene (C2H4) concentration and temperature is simultaneously measured in high temperature environments using a differential absorption scheme combined with a distributed feedback (DFB) diode laser near 1. 620 μm. Based on optimal selection criteria, two wavelength pairs with absorption peaks at 6...
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Frontiers Media S.A.
2020-03-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fphy.2020.00044/full |
| _version_ | 1819173457590484992 |
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| author | Ting Zhang Gang Zhang Xin Liu Guangzhen Gao Tingdong Cai |
| author_facet | Ting Zhang Gang Zhang Xin Liu Guangzhen Gao Tingdong Cai |
| author_sort | Ting Zhang |
| collection | DOAJ |
| description | Ethylene (C2H4) concentration and temperature is simultaneously measured in high temperature environments using a differential absorption scheme combined with a distributed feedback (DFB) diode laser near 1. 620 μm. Based on optimal selection criteria, two wavelength pairs with absorption peaks at 6,174.58 cm−1 and 6,174.98 cm−1 are selected for the measurement. Temperatures are obtained from the ratio of the absorption cross-section of the two wavelength pairs, and C2H4 concentration is inferred from the differential absorption of one of the wavelength pairs. Measurements are performed in a high temperature cell (T = 300–900 K, P = 1 atm) to verify the accuracy of the system. The accuracies for the measurement of C2H4 concentration and temperature are 1.135 and 2.215%, respectively. Continuous time series measurements indicated that the system has a good stability, and the limit of detection achieved by Allan-Werle variance analysis is 6.6 ppm at the optimal average time of 340 s. All the measurements show the scheme is helpful for improving the practicality of laser absorption spectroscopy in combustion diagnosis. |
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| id | doaj.art-a8aa5a3cd9dc40a0854d47ea6325b27e |
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| issn | 2296-424X |
| language | English |
| last_indexed | 2024-12-22T20:23:23Z |
| publishDate | 2020-03-01 |
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| spelling | doaj.art-a8aa5a3cd9dc40a0854d47ea6325b27e2022-12-21T18:13:46ZengFrontiers Media S.A.Frontiers in Physics2296-424X2020-03-01810.3389/fphy.2020.00044521474A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High TemperatureTing ZhangGang ZhangXin LiuGuangzhen GaoTingdong CaiEthylene (C2H4) concentration and temperature is simultaneously measured in high temperature environments using a differential absorption scheme combined with a distributed feedback (DFB) diode laser near 1. 620 μm. Based on optimal selection criteria, two wavelength pairs with absorption peaks at 6,174.58 cm−1 and 6,174.98 cm−1 are selected for the measurement. Temperatures are obtained from the ratio of the absorption cross-section of the two wavelength pairs, and C2H4 concentration is inferred from the differential absorption of one of the wavelength pairs. Measurements are performed in a high temperature cell (T = 300–900 K, P = 1 atm) to verify the accuracy of the system. The accuracies for the measurement of C2H4 concentration and temperature are 1.135 and 2.215%, respectively. Continuous time series measurements indicated that the system has a good stability, and the limit of detection achieved by Allan-Werle variance analysis is 6.6 ppm at the optimal average time of 340 s. All the measurements show the scheme is helpful for improving the practicality of laser absorption spectroscopy in combustion diagnosis.https://www.frontiersin.org/article/10.3389/fphy.2020.00044/fulltunable diode laser absorption spectroscopy (TDLAS)differential absorption schemetemperatureconcentrationmeasurement |
| spellingShingle | Ting Zhang Gang Zhang Xin Liu Guangzhen Gao Tingdong Cai A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature Frontiers in Physics tunable diode laser absorption spectroscopy (TDLAS) differential absorption scheme temperature concentration measurement |
| title | A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature |
| title_full | A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature |
| title_fullStr | A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature |
| title_full_unstemmed | A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature |
| title_short | A TDLAS Sensor for Simultaneous Measurement of Temperature and C2H4 Concentration Using a Differential Absorption Scheme at High Temperature |
| title_sort | tdlas sensor for simultaneous measurement of temperature and c2h4 concentration using a differential absorption scheme at high temperature |
| topic | tunable diode laser absorption spectroscopy (TDLAS) differential absorption scheme temperature concentration measurement |
| url | https://www.frontiersin.org/article/10.3389/fphy.2020.00044/full |
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