Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of Life Cycle Carbon Emission Analysis for optimal low-carbon design of water distribution system

상수관망 저탄소 최적 설계를 위한 Life Cycle Carbon Emission Analysis의 개발

  • Ryu, Yong Min (Department of Civil Engineering, Chungbuk National University) ;
  • Lee, Eui Hoon (School of Civil Engineering, Chungbuk National University)
  • 류용민 (충북대학교 토목공학과) ;
  • 이의훈 (충북대학교 토목공학부)
  • Received : 2024.08.09
  • Accepted : 2024.10.02
  • Published : 2024.10.31
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Abstract

Water distribution systems are important large-scale social infrastructure facilities for maintaining human society. Large-scale social infrastructure facilities are increasing due to urbanization and industrialization. However, one of the problems caused by the progress of urbanization and industrialization is carbon dioxide (CO2) emissions. In this study, a Life Cycle Carbon Emission Analysis (LCCEA) model was proposed to analyze the amount of CO2 generated during the life cycle of water distribution systems, such as installation, maintenance, and repair. Based on the proposed LCCEA model, low-carbon optimal design was performed and compared with cost-optimal design. As a result of applying the LCCEA model to domestic and international water distribution systems, the low-carbon optimal design showed a decrease in total and annual CO2 emissions compared to the cost-optimal design. In addition, when CO2 emissions were converted to costs and compared, the low-carbon optimal design showed better results in terms of cost. The LCCEA model can be applied to various water distribution systems as well as domestic and international water supply networks used in this study, and it will show good results in the design and operation of water distribution systems.

상수관망은 대규모 사회기반시설물로 인간사회를 유지하기 위한 중요한 시설물이다. 도시화 및 산업화로 인해 대규모 사회기반시설물은 증가하고 있다. 그러나, 도시화 및 산업화의 진행으로 인해 발생하는 문제 중 하나는 온실가스의 배출이다. 본 연구에서는 상수관망을 설치 및 유지·보수 등 상수관망의 생애주기동안 발생하는 이산화탄소(CO2)량을 분석하기 위해 Life Cycle Carbon Emission Analysis(LCCEA) 모델을 제안하였다. 제안된 LCCEA 모델을 기반으로 저탄소 최적설계를 진행하였으며, 이를 비용 최적설계와 비교하였다. 국내외 관망에 LCCEA 모델을 적용한 결과, 저탄소 최적설계안은 비용 최적설계안 대비 전체 및 연간 CO2 발생량이 감소하였다. 또한, CO2 배출량을 비용으로 환산하여 비교한 결과, 비용의 측면에서도 저탄소 최적설계안이 좋은 결과를 나타냈다. LCCEA 모델은 본 연구에서 적용한 국내외 관망뿐만이 아닌 다양한 관망에 적용할 경우, 상수관망 설계 및 운영에 좋은 결과를 나타낼 수 있을 것이다.

Keywords

Acknowledgement

본 논문은 환경부의 재원으로 한국환경산업기술원의 도시홍수시설의 계획, 운영, 유지관리 최적화 기술개발사업의 지원을 받아 연구되었습니다(RS-2024-00398012).

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