• Title/Summary/Keyword: 연기성상

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A Study on the Response Characteristics of the Residential Smoke Detector Depending on Controlled Fire Tests (화재실험을 통한 주택용 연기감지기 응답특성에 관한 연구)

  • SaKong, Seong-Ho;Kim, Shi-Kuk;Lee, Chun-Ha;Jung, Jong-Jin
    • Fire Science and Engineering
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    • v.23 no.4
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    • pp.98-103
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    • 2009
  • In this paper, in order to analyze the response characteristics of the smoke detectors which is suitable with the residential fire detector, the paper fire and flammable liquid fire experiment came to be accomplished according to UL Standard for safety for smoke detector for fire alarm signaling systems, UL 268. Also Photoelectric smoke detector, the Analog smoke detector and the single station alarm device came to be used with the specimen and the response characteristics of the smoke detectors which follows in these two types(paper, flammable liquid) test fire came to be analyzed. As a result, according to test fire there was some difference to response characteristics of the smoke detectors.

A Study on the Management of Evacuation Safety Zone through the Prediction of Smoke Movement (재난약자시설의 연기성상 예측을 통한 피난안전구획 관리에 관한 연구)

  • Jin, Seung-Hyeon;Kim, Hye-Won;Han, Ji Woo;Lee, Byeong-Heun;Kwon, Young-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.11a
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    • pp.100-101
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    • 2019
  • For buildings where a large number of the evacuees who are restricted to evacuation behavior compared to normal people, evacuation safety zones should be secured against fire. In order to form a safe haven safety zone, we are going to predict the performance of the building and describe the plan to secure a safe haven zone accordingly.

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연기성상에 따른 감도특성 시험보고

  • Jeong, Yang-Heon;Lee, Bok-Yeong;Yu, In-Ho
    • Fire Protection Technology
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    • s.17
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    • pp.10-14
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    • 1994
  • Since it is extremely of importance that the automatic fire detection systems are reliable and able to operate properly in case of fire, they are subjucted to test on the variety of combustibles.

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An analytical Study on the Smoke Behavior using BRI 2002 in Japan (일본의 BRI2002를 활용한 건물의 연기성상에 대한 해석적 연구)

  • Kim, Dong-Eun;Seo, Dong-Goo;Hong, Hae-Ri;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2010.10a
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    • pp.287-290
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    • 2010
  • 최근 건축물은 초고층화 대형화 지하심층화 등으로 변모하고, 더나아가 복합화가 진행되고 있다. 이러한 건축물은 화재 발생 시 기존의 건축물보다 큰 인재로서 다가오며, 특히 연기로 인한 피해가 주를 이루고 있다. 하지만 국내의 경우 연기의 피해에 따른 피난용량설정 및 계획 등에 관한 연구가 미흡한 실정이다. 따라서 본 연구는 기존 개발된 일본의 연기 거동 해석모델인 BRI2002의 메커니즘를 이용하여, 가상의 건축물에서의 Case Study를 통한 연기거동을 분석함으로서 향후 연기거동에 대한 연구의 방향성 및 기초적인 자료를 구축하는데 그 목적이 있다.

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퇴적 목분의 훈소성 영향인자에 관한 연구

  • 염민선;강민호;정국삼
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • 1997.11a
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    • pp.109-114
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    • 1997
  • 훈소 또는 무염연소는 출화까지의 화재 초기의 성상을 특정지울 뿐만 아니라, 화재의 성장기에서도 일어나는데, 이에 따라 다량의 연기와 함께 고체 가연물의 낮은 온도에서 표면반응이 계속되므로, 유기질 고분자 분체의 다량의 가연성분 및 유독성을 갖게 되어 인적ㆍ물적 피해를 초래 할 수 있다. (중략)

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A Study of Smoke Movement in Tunnel Fires (터널내에서 화재 발생시 연기 거동에 대한 연구)

  • 김상훈;김성찬;김충익;유홍선
    • Fire Science and Engineering
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    • v.14 no.2
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    • pp.21-32
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    • 2000
  • In this study, reduced-scale experiments as the alternative to a real-scale fire test were conducted to understand fire properties in tunnel, and their results were compared with those of numerical simulation. The 1/20 scale experiments were conducted under the Froude scaling since smoke movement in tunnel is governed by buoyancy farce. A numerical simulations were on performed 3D unstructured meshes with PISO algorithm and buoyant plume models. Results showed that data was in reasonable agreement with the numerical data of smoke velocity, temperature distribution, and clear height.

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Modeling of the Velocity of the Ceiling Jet Front (연기선단의 전파속도 모델에 관한 연구)

  • 김명배;한용식
    • Fire Science and Engineering
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    • v.15 no.2
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    • pp.91-95
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    • 2001
  • Decays of the ceiling jet front velocity under a circular ceiling are investigated. To simulate the ceiling jet in fires He and $N_2$gas were injected from a nozzle to the center of the ceiling. The jet fronts in the form of turbulent eddies were traced by a high-speed camera system. The instantaneous locations of the front were obtained from visual readings of visualized front, and the radial velocity was calculated from the information of the time and the location with respect to the front. The similarity and dimensional analysis were also carried out to reveal the relationship between the velocity decay and the radial distance. It was shown that the radial velocity of the front was inversely proportional to the radial distance in the fully developed region from the experimental results and the theoretical analysis.

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Distribution of Heat and Smoke Related to Openings in Hise-Rise Apartment Building Fires (고층 공동주택의 개구특성에 따른 화재시 열.연기유동에 관한 연구)

  • 이지희
    • Fire Science and Engineering
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    • v.15 no.2
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    • pp.59-79
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    • 2001
  • The paper proposes alternatives for fire safety in architectural planning through heat-smoke distribution related to openings so that we decrease casualty and property loss by fire and lay a great emphasis on building high-rise apartments with consideration of fire safety in Korea. An analysis program(HFA-Heat Fluid Analysis) is built to perform simultaneously numerical analysis and experimental analysis on rooms, units and buildings. In consequence, on the first, fire prevention methods are required to be set up related to openings for design rooms since the flow of heat and smoke is influenced by the type of openings in high-rise apartments. Second, the numerical analysis showed that different planning types cause to show differences in the spreading time of heat and smoke to design the units of high-rise apartments. On the third, each unit building showed different fire behavior depending on openings by numerical analysis and small scaled experiment on heat and smoke flow.

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