지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.11
- 수록면
- 928 - 934 (7page)
- DOI
- 10.7782/JKSR.2024.27.11.928
이용수
초록· 키워드
오류제보하기
This study investigates the effectiveness of the tap water method in reducing nano-sized wear particles (mass concentration) from wheel-rail contact for air quality improvement, by using a small-sized twin-disk rig at train speeds of 45 and 80 km/h. A diffusion dryer is used to eliminate the water vapor expected to be generated due to frictional heat in tap water application. To verify the effectiveness of tap water application, the experiment was repeated twice for each rotational speed under dry and wet conditions. A Fast Mobility Particle Sizer (FMPS) was used to measure the mass concentration of particles in the 5.6 to 560 nm range, and mean values were used to calculate particle size mass distribution and PM0.035, PM0.1, and PM0.56 to analyze air quality improvement. The results showed that mass concentrations of particles below 35 nm in size were reduced at both train speeds, and this is deemed to be the effect of water vapor elimination using the diffusion dryer. The reduction rates were 50% or higher at most particle sizes, and over 95% for PM0.56, higher than results from earlier studies. Therefore, the tap water method is deemed to be effective in improving air quality through the actual reduction of nano-sized wear particles generated in wheel-rail contact.
목차
Abstract
1. Introduction
2. Body
3. Results
4. Conclusion
References
참고문헌 (13)
참고문헌 신청
S. Abbasi, L. Olander, C. Larsson, U. Olofsson et al. (2012) A field test study of airborne wear particles from a running regional train, IMechE Part F: Journal of Rail and Rapid Transit, 226, pp. 95-109.
S. Abbasi, J. Wahlström, L. Olander, C. Larsson (2011) A study of airborne wear particles generated from organic railway brake pads and brake discs, Wear, 273, pp. 93-99.
H. Lee, H.G. Namgung, S.B. Kwon (2018) Effect of train velocity on the amount of airborne wear particles generated from wheel-rail contacts, Wear, 414-415, pp. 296-302.
H. Lee (2019) Generation of airborne wear particles from wheel-rail contact during rolling/sliding and pure sliding contact, Wear, 426-427, pp. 1797-1806.
T. Moreno, N. Pérez, C. Reche, V. Martins et al. (2014) Subway platform air quality: Assessing the influences of tunnel ventilation, train piston effect and station design, Atmospheric Environment, 92, pp. 461-468.
S. Abbasi, J. Wahlström, L. Olander, C. Larsson (2011) A study of airborne wear particles generated from organic railway brake pads and brake discs, Wear, 273, pp. 93-99.
H. Lee, H.G. Namgung, S.B. Kwon (2018) Effect of train velocity on the amount of airborne wear particles generated from wheel-rail contacts, Wear, 414-415, pp. 296-302.
H. Lee (2019) Generation of airborne wear particles from wheel-rail contact during rolling/sliding and pure sliding contact, Wear, 426-427, pp. 1797-1806.
T. Moreno, N. Pérez, C. Reche, V. Martins et al. (2014) Subway platform air quality: Assessing the influences of tunnel ventilation, train piston effect and station design, Atmospheric Environment, 92, pp. 461-468.
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