A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels
In order to demonstrate the feasibility of the tunable diode laser absorption spectroscopy (TDLAS) technology for monitoring NO<sub>x</sub> emissions from inland vessels, an equipment is designed to monitor emissions for inland vessels. The equipment was installed at the Jianbi locks, wh...
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MDPI AG
2025-01-01
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| author | Mengtao Deng Jianbo Hu Zhaoyu Qi Shitao Peng |
| author_facet | Mengtao Deng Jianbo Hu Zhaoyu Qi Shitao Peng |
| author_sort | Mengtao Deng |
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| description | In order to demonstrate the feasibility of the tunable diode laser absorption spectroscopy (TDLAS) technology for monitoring NO<sub>x</sub> emissions from inland vessels, an equipment is designed to monitor emissions for inland vessels. The equipment was installed at the Jianbi locks, where experimental measurements were conducted on vessels passing through the locks, with a total of 330 vessels being measured. The detection rate for vessels was 50.3%, with a detection rate of 72.4% for fully loaded vessels and 24.7% for unloaded vessels. In addition, the exhaust emission patterns of inland vessels, the NO<sub>x</sub> emission patterns and detection rate of fully loaded and unloaded vessels, and the key parameter of the NO<sub>x</sub> emission factor of inland vessels were comprehensively analyzed. The experimental results show that CO<sub>2</sub> and NO<sub>x</sub> in the exhaust gas of inland vessels have high signal intensity and good synchronization and can be applied to the regulatory monitoring of NO<sub>x</sub> emissions from inland vessels. Furthermore, the ratios of NO/CO<sub>2</sub> and NO<sub>2</sub>/CO<sub>2</sub> from fully loaded and unloaded vessels were significantly different. indicating that the NO<sub>2</sub> indicator must be included in the remote monitoring indicators for inland vessel exhaust gases. Otherwise, the remote monitoring results for NO<sub>x</sub> may be significantly underestimated. |
| format | Article |
| id | doaj-art-26371e06b0094b8aa8e7bb0ef93041f1 |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Remote Sensing |
| spelling | doaj-art-26371e06b0094b8aa8e7bb0ef93041f12025-01-10T13:20:27ZengMDPI AGRemote Sensing2072-42922025-01-0117116810.3390/rs17010168A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland VesselsMengtao Deng0Jianbo Hu1Zhaoyu Qi2Shitao Peng3Key Laboratory of Environmental Protection Technology on Water Transport, Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, ChinaNational Engineering Research Center of Port Hydraulic Construction Technology, Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, ChinaNational Engineering Research Center of Port Hydraulic Construction Technology, Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, ChinaNational Engineering Research Center of Port Hydraulic Construction Technology, Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, ChinaIn order to demonstrate the feasibility of the tunable diode laser absorption spectroscopy (TDLAS) technology for monitoring NO<sub>x</sub> emissions from inland vessels, an equipment is designed to monitor emissions for inland vessels. The equipment was installed at the Jianbi locks, where experimental measurements were conducted on vessels passing through the locks, with a total of 330 vessels being measured. The detection rate for vessels was 50.3%, with a detection rate of 72.4% for fully loaded vessels and 24.7% for unloaded vessels. In addition, the exhaust emission patterns of inland vessels, the NO<sub>x</sub> emission patterns and detection rate of fully loaded and unloaded vessels, and the key parameter of the NO<sub>x</sub> emission factor of inland vessels were comprehensively analyzed. The experimental results show that CO<sub>2</sub> and NO<sub>x</sub> in the exhaust gas of inland vessels have high signal intensity and good synchronization and can be applied to the regulatory monitoring of NO<sub>x</sub> emissions from inland vessels. Furthermore, the ratios of NO/CO<sub>2</sub> and NO<sub>2</sub>/CO<sub>2</sub> from fully loaded and unloaded vessels were significantly different. indicating that the NO<sub>2</sub> indicator must be included in the remote monitoring indicators for inland vessel exhaust gases. Otherwise, the remote monitoring results for NO<sub>x</sub> may be significantly underestimated.https://www.mdpi.com/2072-4292/17/1/168TDLASinland vesselNO<sub>x</sub>detection rateemission patterns |
| spellingShingle | Mengtao Deng Jianbo Hu Zhaoyu Qi Shitao Peng A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels Remote Sensing TDLAS inland vessel NO<sub>x</sub> detection rate emission patterns |
| title | A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels |
| title_full | A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels |
| title_fullStr | A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels |
| title_full_unstemmed | A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels |
| title_short | A Study on Remote Monitoring of NO<sub>x</sub> Emissions from Inland Vessels |
| title_sort | study on remote monitoring of no sub x sub emissions from inland vessels |
| topic | TDLAS inland vessel NO<sub>x</sub> detection rate emission patterns |
| url | https://www.mdpi.com/2072-4292/17/1/168 |
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