Development of a warning algorithm and monitoring system for preventing condensation in utility tunnels

Sang-Il Choi; Jung-Hun Kim; Suk-Min Kong; Yoseph Byun; Seong-Won Lee

doi:10.9711/KTAJ.2024.26.5.551

All Issue

2024 Vol.26, Issue 5 Preview Page

Research Paper

Development of a warning algorithm and monitoring system for preventing condensation in utility tunnels 공동구 내 결로 예방을 위한 경고 알고리즘 및 모니터링 시스템 개발

30 September 2024. pp. 551-561

PDF XML

Abstract

Underground utility tunnels are spaces densely packed with various infrastructure facilities, such as power, telecommunications, and water supply and drainage systems, making internal environment management crucial. An investigation into accident cases and on-site demands in these tunnels revealed that while fires and floods are the most common types of incidents, the demand for real-time condensation prevention and response is frequent according to on-site managers. Condensation occurs due to the difference in humidity and temperature between the inside and outside of the tunnel. Frequent or prolonged condensation can lead to metal pipe corrosion, electrical failures, and reduced equipment lifespan. Therefore, this study developed a control algorithm and monitoring system to prevent condensation in underground utility tunnels. The proposed control algorithm estimates the likelihood of condensation in real-time based on the measured temperature and humidity and suggests appropriate responses for each stage to the managers. Finally, a practical condensation prevention monitoring system was built based on the developed algorithm, verifying the feasibility and applicability of this technology in the field.

Keywords

Utility tunnel

Condensation prevention

Warning algorithm

Monitoring system

지하 공동구는 전력, 통신, 상하수도 등 다양한 인프라 시설이 밀집해 있는 공간으로, 내부 환경 관리가 매우 중요하다. 공동구에서 발생한 사고 사례 및 현장 요구를 조사한 결과, 가장 많이 발생하는 사고 형태는 화재 및 침수였지만, 실제 공동구에서 근무하는 현장 관리자들의 의견에 따르면 실시간 결로 예방 및 대응에 대한 요구가 빈번한 것으로 확인되었다. 결로 현상은 공동구 내부 습도와 내부 및 외부의 온도 차이로 인해 발생하며, 빈번하게 발생하거나 장시간 지속될 경우 금속 관로 부식, 전기적 고장, 장비 수명 단축 등의 문제를 야기할 수 있다. 따라서, 본 연구에서는 지하 공동구 내 결로 생성을 방지하기 위한 경고 알고리즘 및 모니터링 시스템을 개발하였다. 제안된 경고 알고리즘은 실시간으로 측정되는 온도와 습도를 바탕으로 결로 발생 가능성을 추정하고, 각 단계에 따른 관리자의 대응 방식을 제안한다. 마지막으로, 개발된 알고리즘을 바탕으로 실제 구동 가능한 결로 예방 모니터링 시스템을 구축하여, 해당 기술의 현장 적용 가능성과 활용성을 검증하였다.

키워드

공동구

결로 예방

경고 알고리즘

모니터링 시스템

References

Bai, Y., Zhou, R., Wu, J. (2020), "Hazard identification and analysis of urban utility tunnels in China", Tunnelling and Underground Space Technology, Vol. 106, 103584.

10.1016/j.tust.2020.103584

Chen, Y., Li, X., Wang, W., Wu, G., Wang, L. (2023), "Risk assessment and prediction of underground utility tunnels based on Bayesian network: a case study in Beijing, China", Journal of Circuits, Systems and Computers, Vol. 32, No. 6, 2350096.

10.1142/S0218126623500962

Jung, Y., Park, G.D., Yu, Y. (2021), "Development of a digital twin-based flood disaster support platform technology for underground utility tunnel", Journal of the Korean Geotechnical Society, Vol. 22, No. 4, pp. 15-22.

Kim, D.I., Lee, I.B., Jung, W.S., Lee, B.J. (2023), "Predicting internal environment of underground utility tunnel using machine learning model", Journal of Korean Institute of Architectural Sustainable Environment and Building Systems, Vol. 17, No. 4, pp. 181-192.

10.22696/jkiaebs.20230015

Ko, J. (2015), "Study on the fire risk prediction assessment due to deterioration contact of combustible cables in underground common utility tunnels", Journal of Korea Society of Disaster Information, Vol. 11, No. 1, pp. 135-147.

10.15683/kosdi.2015.11.1.135

Ma, H., Zhou, X., Huang, J. (2023), "Effect of ventilation on thermal and humidity environment of the underground utility tunnel in the plum rain season in southern China: field measurement and CFD simulation", Underground Space, Vol. 13, pp. 301-315.

10.1016/j.undsp.2023.02.016

Murray, F.W. (1967), "On the computation of saturation vapor pressure", Journal of Applied Meteorology and Climatology, Vol. 6, No. 1, pp. 203-204.

10.1175/1520-0450(1967)006<0203:OTCOSV>2.0.CO;2

Park, J.W. (2009), A study on decrease of condensation for utility-pipe conduit, Master Thesis, University of Seoul, pp. 18-20.

Park, S.J., Lee, I.B., Lee, S.Y., Kim, J.G., Cho, J.H., Decano-Valentin, C., Choi, Y.B., Lee, M.H., Jeong, H.H., Yeo, U.H., Jung, W.S., Jeong, D.Y. (2022), "Air conditioning system design to reduce condensation in an underground utility tunnel using CFD", IEEE Access, Vol. 10, pp. 116384-116401.

10.1109/ACCESS.2022.3219210

Seo, H., Choi, H., Lee, M.C., Song, C.G. (2019), "Establishing a risk assessment scenario for fire prevention and safety management in underground urban utility tunnels", Journal of the Korean Society of Hazard Mitigation, Vol. 19, No. 1, pp. 241-248.

10.9798/KOSHAM.2019.19.1.241

Tai, C., Tian, G., Lei, W. (2022), "Measurement of indoor environmental parameters and analysis of the condensation phenomenon in urban utility tunnels", Indoor and Built Environment, Vol. 31, No. 4, pp. 1091-1106.

10.1177/1420326X211056485

Yoon, D.W., Seong, N.C., Shin, D.C. (2014), "A study on determining dew condensation at the underground utility tunnel as measurement thermal condition", Journal of the Korean Society of Living Environment System, Vol. 21, No. 6, pp. 1014-1022.

10.21086/ksles.2014.12.21.6.1014

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 26
No :5
Pages :551-561
Received Date : 2024-08-21
Revised Date : 2024-09-03
Accepted Date : 2024-09-03
DOI :https://doi.org/10.9711/KTAJ.2024.26.5.551

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

All Issue