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Characteristics of Thermal and Fluid Flows for Different Fire Locations in Underground Combined Cycle Power Plant

화원 위치에 따른 지하 복합 발전 플랜트 내 열유동 특성 연구

  • Sung, Kun Hyuk (School of Mechanical Engineering, Chung-Ang University) ;
  • Bang, Joo Won (School of Mechanical System Engineering, Chung-Ang University) ;
  • Lee, Soyeong (School of Mechanical Engineering, Chung-Ang University) ;
  • Ryou, Hong Sun (School of Mechanical Engineering, Chung-Ang University) ;
  • Lee, Seong Hyuk (School of Mechanical Engineering, Chung-Ang University)
  • 성건혁 (중앙대학교 기계공학과) ;
  • 방주원 (중앙대학교 기계시스템엔지니어링학과) ;
  • 이소영 (중앙대학교 기계공학과) ;
  • 유홍선 (중앙대학교 기계공학과) ;
  • 이성혁 (중앙대학교 기계공학과)
  • Received : 2017.03.23
  • Accepted : 2017.05.12
  • Published : 2017.05.31

Abstract

The present study numerically investigates the effect of obstacles located in the trajectory of fire plume flow on heat flow characteristics by using Fire Dynamics Simulation (FDS) software in an underground combined cycle power plant (CCPP). Fire size is taken as 10 MW and two different locations of fire source are selected depending on the presence of an obstacle. As the results, when the obstacle is in the trajectory of fire plume, hot plume arrives at the ceiling about 5 times slower in the upper of the fire in comparison to the results without obstacle. In addition, the average propagation time of ceiling jet increases by about 70 % with the distance from the ceiling in the upper of the fire, and it increases mainly about 4 times at the distance of 10 m. Consequently, it is noted that the analysis of heat flow characteristics in the underground CCPP considering fire scenarios is essential to develop the fire detection system for initial response on evacuation and disaster management.

Keywords

Ceiling jet;FDS;Fire scenario;Hot plume;Underground Combined Cycle Power Plant

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)

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