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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.8
- 수록면
- 660 - 669 (10page)
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초록· 키워드
오류제보하기
Tele monitoring system (TMS) has been widely used to monitor air pollutants emitted from stationary sources in Korea. Sulfur dioxide (SO₂) emitted from an industrial stack can be analyzed using the NDIR technique. The amount of energy absorbed in the infrared wavelength band varies with the concentration of gas molecules. In this study, physical influencing factors were investigated including: the effect of signal detection according to the temperature of the detector, the flow rate of the gas cell, and the change of the optical path inside the gas cell. A LiTaO₃-based pyroelectric detector was applied to the NDIR analyzer. The physical parameters consisted of temperatures (35, 40, 45, 50°C), flow rates (100, 500, 1000, 2000, 5000, 10000 mL/min), and optical path lengths (5.6, 7.2, 10.4 m). As a result, when the temperature increased, the magnitude of the basic signal tended to decrease. In contrast, variations of flow rates did not show a significant effect on the detector signal. In addition, the longer optical path shown the lower signal. It was found that the signal resolution of pyroelectric detector was improved with respect to low concentrations of SO₂ (<50 ppm).
목차
Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
References
참고문헌 (18)
참고문헌 신청
Akram, M. -M. / 2020 / Low Cost and Miniaturized NDIR System for CO2 Detection Applications / Sensor Review 40(6):637~646
Batra, A. -K. / 2009 / Dielectric and Pyroelectric Properties of LiTaO3 : P(VDF-TrFE)Composite Films / Organic Photonic Materials and Devices XI 7213(721313):1~9
Dinh, T. -V. / 2021 / Moisture Removal Techniques for a Continuous Emission Monitoring System: A Review / Atmosphere 12(1)
Feng, C. / 1999 / The Detection Mechanism of LiTaO3 Type II Pyroelectric Detectors / Infrared Physics & Technology 40(2):61~70
Frodl, R. / 2006 / A High-Precision NDIR CO2 Gas Sensor for Automotive Applications / IEEE Sensors Journal 6(6):1697~1704
Batra, A. -K. / 2009 / Dielectric and Pyroelectric Properties of LiTaO3 : P(VDF-TrFE)Composite Films / Organic Photonic Materials and Devices XI 7213(721313):1~9
Dinh, T. -V. / 2021 / Moisture Removal Techniques for a Continuous Emission Monitoring System: A Review / Atmosphere 12(1)
Feng, C. / 1999 / The Detection Mechanism of LiTaO3 Type II Pyroelectric Detectors / Infrared Physics & Technology 40(2):61~70
Frodl, R. / 2006 / A High-Precision NDIR CO2 Gas Sensor for Automotive Applications / IEEE Sensors Journal 6(6):1697~1704
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