Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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The Influence of Zoning at Shafts of Super-tall Buildings on the Stack Effect and Stairwell Pressurization

초고층건물 샤프트의 수직구획이 연돌효과 및 급기가압 성능에 미치는 영향

  • Kim, Beom-Kyue (Dept. of Fire Protection and Disaster Prevention Engineering, Hoseo Univ.) ;
  • Kim, Hak-Jung (Dept. of Fire Protection and Disaster Prevention Engineering, Hoseo Univ.) ;
  • Yeo, Yong-Ju (Dept. of Fire Protection and Disaster Prevention Engineering, Hoseo Univ.) ;
  • Leem, Chae-Hyun (Dept. of Fire Protection and Disaster Prevention Engineering, Hoseo Univ.) ;
  • Park, Yong-Hwan (Dept. of Fire Protection and Disaster Prevention Engineering, Hoseo Univ.)
  • 김범규 (호서대학교 소방방재학과) ;
  • 김학중 (호서대학교 소방방재학과) ;
  • 여용주 (호서대학교 소방방재학과) ;
  • 임채현 (호서대학교 소방방재학과) ;
  • 박용환 (호서대학교 소방방재학과)
  • Received : 2012.09.05
  • Accepted : 2012.10.12
  • Published : 2012.10.31
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Abstract

This study analyzed the effect of zoning on the distribution of pressure differentials caused by stack effect and air pressurization in a center core type of 80 story super-tall building. The results showed that maximum pressure difference more than 250 Pa can be generated by stack effect without zoning. Zoning of stairwell only resulted in 10 Pa reduction of maximum pressure difference, however, zoning of both stairwell and EV shaft especially at the same floor revealed 50 % reduction in stack effect. It was also analysed that the minimum required air flow rate occurred when the stairwell temperature reached 50 % of temperature difference between indoor and outdoor.

최근 개정된 초고층건물 특별법에서는 피난안전구역을 최소 30개층 마다 설정함과 동시에 계단실을 수직구획 하도록 규정하고 있다. 이에 본 연구에서는 중앙코아 방식의 80층 초고층건물 계단실 수직구획이 연돌효과 및 계단실 급기가압 성능에 미치는 영향을 시뮬레이션 해석을 통해 분석하였다. 해석결과, 계단실 수직구획이 없는 경우 연돌효과로 인해 최대 차압 250 Pa 이상이 발생하였으며, 계단실만 수직구획한 경우에는 10 Pa 정도만 감소하였으나 계단실과 승강기의 승강로를 동시에 수직구획한 경우 최대차압이 약 125 Pa로 낮아져 연돌효과가 약 50 % 감소하였다. 또한, 계단실을 급기가압 할 경우 계단실온도가 실내온도와 외기온도 차이의 약 1/2일 때가 소요급기풍량 측면에서 가장 효율적인 것으로 예측되었다.

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References

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