한국가스학회지 (Journal of the Korean Institute of Gas)

  • 제28권4호
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  • Pages.140-147
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  • 2024
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  • 1226-8402(pISSN)
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  • 2713-6922(eISSN)
한국가스학회 (The Korean Institute of GAS)
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밀폐공간 내 수소 폭발 피해 저감을 위한 폭발 방산구에 대한 연구

A Study on Explosion venting for Reducing Hydrogen Explosion Damage in enclosed Spaces

  • 오세현 (전남대학교 화학공학과) ;
  • 임채완 (전남대학교 화학공학과) ;
  • 백승헌 (전남대학교 화학공학과) ;
  • 마병철 (전남대학교 화학공학과)
  • Se-Hyeon Oh (Dept. of Chemical Engineering, Chonnam National University) ;
  • Chae-Wan Lim (Dept. of Chemical Engineering, Chonnam National University) ;
  • Seung-Heon Baek (Dept. of Chemical Engineering, Chonnam National University) ;
  • Byung-Chol Ma (Dept. of Chemical Engineering, Chonnam National University)
  • 투고 : 2024.07.08
  • 심사 : 2024.12.16
  • 발행 : 2024.12.31
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초록

수소는 탄소중립을 향한 세계적인 흐름에 맞춰 화석 연료를 대체할 에너지로 각광 받고 있다. 하지만, 수소는 넓은 가연성 범위와 쉽게 점화되어 누출에 의한 폭발·화재로부터 위험하다. 특히, 밀폐된 공간에서는 수소-공기 혼합가스가 폭발하면 큰 피해를 야기할 수 있어 폭발에 의한 과압 해소를 목적으로 폭발 방산구를 설치하여 안전을 확보해야한다. 국내에서는 융·복합, 패키지형 및 이동식 자동차충전소 시설기준 등에 관한 특례기준을 통해 수소충전을 위한 설비를 컨테이너와 같은 밀폐공간에 장착하고 있다. 이처럼, 밀폐된 공간에서 수소 누출 시에는 공기와 혼합되어 가연성 범위(LEL/UEL)를 형성하고 점화 시에 폭발하여 과압이 발생한다. 따라서, 본 연구에서는 컨테이너 또는 밀폐공간에서의 폭발 과압 해소를 위한 폭발 방산구의 종횡비 및 점화 위치에 따라 내부에 형성되는 폭발 과압을 분산분석(ANOVA)을 통해 분석한다. 또한, 폭발 방산구 크기 증가 및 수소-공기 혼합비에 따른 폭발 과압에 대한 영향을 분석한다. 이를 통해, 수소를 취급하는 밀폐공간에서의 폭발 방산구 설치에 도움이 될 것으로 기대한다.

Hydrogen is gaining attention as an energy source to replace fossil fuels in line with the global trend toward carbon neutrality. However, hydrogen is dangerous due to its wide range of flammable and ease of ignition, which can explosions and fires from leaks. Especially in enclosed spaces, a hydrogen-air mixture can significant damage if it explodes, so safety should be ensured by installing explosion venting to relieve the overpressure. In Korea, due to special provisions regarding the standards for facilities such as integrated, packaged, and mobile hydrogen refueling stations (HRS), these facilities are installed in enclosed spaces like containers. In this way, when hydrogen leaks in an enclosed space, it mixture to form a flammable range (LEL/UEL) and can an explosion upon ignition, resulting in overpressure. In this study, the effect of the aspect ratio and ignition location of the explosion venting on the overpressure formed internally in a container or enclosed space is analyzed by ANOVA. Additionally, the effect of increasing the size of the explosion venting and the hydrogen-air mixture ratio on the overpressure is analyzed. Through it, it is expected to assist in the installation of explosion venting in enclosed spaces where hydrogen is handled.

키워드

과제정보

본 연구는 2024년도 환경부(한국환경보전원)의 재원으로 화학물질 안전관리 특성화대학원 사업의 지원을 받아 수행되었습니다(B0080524003046)

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