A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions
Emissions from thermal power plants have always been the central consideration for environmental protection. Existing optical sensors in thermal power plants usually measure the total mass concentration of the particulate matter (PM) by a single-wavelength laser, bearing intrinsic errors owing to th...
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MDPI AG
2024-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/5/1424 |
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| author | Xiao Xiao Ming Zhu Qiuyu Wang Xiaodong Yuan Mengxue Lin |
| author_facet | Xiao Xiao Ming Zhu Qiuyu Wang Xiaodong Yuan Mengxue Lin |
| author_sort | Xiao Xiao |
| collection | DOAJ |
| description | Emissions from thermal power plants have always been the central consideration for environmental protection. Existing optical sensors in thermal power plants usually measure the total mass concentration of the particulate matter (PM) by a single-wavelength laser, bearing intrinsic errors owing to the variation in particle size distribution (PSD). However, the total mass concentration alone cannot characterize all the harmful effects of the air pollution caused by the power plant. Therefore, it is necessary to measure the mass concentration and PSD simultaneously, based on which we can obtain multi-particle-size channel mass concentration. To achieve this, we designed an optical sensor based on the three-wavelength technique and tested its performance in a practical environment. Results showed that the prototype cannot only correctly measure the mass concentration of the emitted PM but also determine the mean diameter and standard deviation of the PSDs. Hence, the mass concentrations of PM<sub>10</sub>, PM<sub>2.5</sub>, and PM<sub>1</sub> are calculated, and the air pollutants emission by a thermal power plant can be estimated comprehensively. |
| first_indexed | 2024-04-25T00:19:36Z |
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| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-25T00:19:36Z |
| publishDate | 2024-02-01 |
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| spelling | doaj.art-0028249ac4b64d15bfa9d5ec9fb1e9952024-03-12T16:54:42ZengMDPI AGSensors1424-82202024-02-01245142410.3390/s24051424A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant EmissionsXiao Xiao0Ming Zhu1Qiuyu Wang2Xiaodong Yuan3Mengxue Lin4Hubei Key Laboratory of Smart Internet Technology, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, ChinaHubei Key Laboratory of Smart Internet Technology, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, ChinaHubei Key Laboratory of Smart Internet Technology, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, ChinaHubei Key Laboratory of Smart Internet Technology, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, ChinaHubei Key Laboratory of Smart Internet Technology, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, ChinaEmissions from thermal power plants have always been the central consideration for environmental protection. Existing optical sensors in thermal power plants usually measure the total mass concentration of the particulate matter (PM) by a single-wavelength laser, bearing intrinsic errors owing to the variation in particle size distribution (PSD). However, the total mass concentration alone cannot characterize all the harmful effects of the air pollution caused by the power plant. Therefore, it is necessary to measure the mass concentration and PSD simultaneously, based on which we can obtain multi-particle-size channel mass concentration. To achieve this, we designed an optical sensor based on the three-wavelength technique and tested its performance in a practical environment. Results showed that the prototype cannot only correctly measure the mass concentration of the emitted PM but also determine the mean diameter and standard deviation of the PSDs. Hence, the mass concentrations of PM<sub>10</sub>, PM<sub>2.5</sub>, and PM<sub>1</sub> are calculated, and the air pollutants emission by a thermal power plant can be estimated comprehensively.https://www.mdpi.com/1424-8220/24/5/1424three wavelengthsmass concentrationparticulate matterparticle size distributionmulti-particle-size channelsthermal power plant |
| spellingShingle | Xiao Xiao Ming Zhu Qiuyu Wang Xiaodong Yuan Mengxue Lin A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions Sensors three wavelengths mass concentration particulate matter particle size distribution multi-particle-size channels thermal power plant |
| title | A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions |
| title_full | A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions |
| title_fullStr | A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions |
| title_full_unstemmed | A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions |
| title_short | A Three-Wavelength Optical Sensor for Measuring the Multi-Particle-Size Channel Mass Concentration of Thermal Power Plant Emissions |
| title_sort | three wavelength optical sensor for measuring the multi particle size channel mass concentration of thermal power plant emissions |
| topic | three wavelengths mass concentration particulate matter particle size distribution multi-particle-size channels thermal power plant |
| url | https://www.mdpi.com/1424-8220/24/5/1424 |
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