• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.193-194
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• 2022

본 연구에서는 특별피난계단의 전실에 설치되는 부속실제연설비가 화재 시 발생한 연기가 부속실 내로 역류하지 않는 급기댐퍼의 적정한 설치위치를 알아보고자 하였으며, 이를 확인하기 위하여 FDS(Fire Dynamics Simulator)을 사용 하였다. 시뮬레이션 Case 총 15가지로 구분하고, 방연풍속은 총 64개의 지점에서 측정하는 시뮬레이션을 수행하였다. 시뮬레이션 결과 출입문 상부 및 하부에서 역 기류가 발행하는 Case가 있었으며, 대부분 출입문 하부에서의 연기 유입이 예상되는 경우가 많았다. 방연풍속은 측정 포인트 64점에서 관련기준에 단 한 곳도 미달하지 않고 만족하는 경우는 총 단 4가지 Case로서 매우 제한적인 것을 알 수 있었다. 그만큼 급기댐퍼의 위치 및 급기방향에 따라 부속실 제연설비의 성능이 다양하게 나타날 수 있다는 것이다. 본 연구를 바탕으로 앞으로 실물실험을 통하여 구체적인 자료가 입증되길 바라고, 더불어 부속실 제연설비의 성능을 개선하는 데 있어 도움이 되었으면 한다.

• Fire Science and Engineering
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• v.24 no.5
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• pp.87-93
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• 2010

The fact that the smoke hinders evacuation and fire-fighting activities as well as becomes the major cause of life casualty emphasizes the importance of smoke control system. As one of the fire safety standards designed to secure the smoke safety, NFSC501A (Design Guide for Smoke Control System of Special Evacuation Stairwell and Lobby) has been proposed, preventing smoke from penetrating into the smoke-free escape route by raising the pressure of the smoke control zone higher than fire area. For model building of 20 stories, pressurization system was designed according to standard and pressure field of compartments in whole building induced by pressurization system was analyzed using the network model.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.303-310
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• 2010

기존 건축물은 현행 소방법 및 건축법을 소급해 적용할 수 없다는 이유로 비상용승강기와 제연설비가 설치되어 있지 않는 경우가 상당수 존재한다. 이렇듯 화재에 취약할 수밖에 없는 기존 건축물에서 화재가 발생했을 때 소방대 진입 및 구조활동이 가능한 통로를 확보하는 것이 매우 중요하다. 본 연구는 이러한 관점에서 기존 건축물의 화재안전성능 개선에 따른 부담을 최소화하는 방안으로 승강로 급기가압 방식을 제시한다. 먼저, 수직통로를 통한 연기 확산에 무방비 상태인 기존의 고층 건축물의 문제점 및 화재사례를 분석하고, 국내외 비상용승강기 및 제연설비 관련 법규 현황을 비교분석하였다. 그리고 NIST의 Contam을 이용한 시뮬레이션을 통하여 승강로 급기가압 전과 후의 층별 차압을 비교함으로써 승강로 가압이 연돌효과에 미치는 영향을 분석하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.468-473
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• 2016

The aim of this study was to measure the opening force of an access door of a pressurized smoke control zone and verify the reliability of the opening force. For the access door opening force, the opening load of the access door was measured before and after pressurized air had entered the smoke control zone. The reliability of the measured values was verified using the Anderson Darling's statistical analysis method of the Minitab Program. Because the analyzed P values were greater than 0.05 except for some floors before and after the operation of the smoke control equipment, the opening force was found to have 95% reliability. The normal distribution of the measured values showed no relationship with the operation of the smoke control equipment and the precision of the force gauge was believed to be reliable. The major factors for the optimal design of the pressurized smoke control equipment include the precision and reliability of the force gauge, the correct posture of the measuring person, and the same conditions for access doors. Therefore, a digital force gauge is believed to be suitable for measuring the opening force of the access door of a pressurized smoke control zone. In addition, standardization of the posture of a measuring person, the setup of the initial opening force of an access door, etc., are major variables for effective measurements of the door opening force of an access door.

• Fire Science and Engineering
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• v.31 no.4
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• pp.52-58
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• 2017

This study investigated the pressure difference distribution and the flow characteristics among room, ancillary room, and stair case by carrying out the numerical simulations on the air flow inside the pressurized air supply smoke control system. Numerical simulations were conducted to analyze pressure and velocity distribution of compartments by pressurized air supply for the air-leakage test facility which was built to measure the effective leakage area. In this study, the leakage of air was considered by locating the narrow slit onto fire door and window of room. Simulated results using this method precisely followed the previous experimental results for the pressure differences between the stair case and ancillary room. Predicted results showed that the local leakage of air rarely affected the overall flow pattern and pressure distribution. Although the average velocity over the door between room and ancillary room satisfied the regulation for fire safety, it was certified the unsafe outflow to ancillary room could be occurred in the local position such as the upper part of the door.

• 방재와보험
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• s.79
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• pp.40-43
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• 1998

• 방재와보험
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• s.80
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• pp.35-39
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• 1999

• 방재와보험
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• s.75
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• pp.23-29
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• 1997

• 방재와보험
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• s.77
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• pp.16-23
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• 1998

• 방재와보험
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• s.74
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• pp.30-32
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• 1997