• 제목/요약/키워드: Fire Heat

검색결과 1,617건 처리시간 0.025초

화재시 방화문의 복사열에 관한 실험적 연구 (An Experimental Study on the Radiant Heat of the Firedoors in Fire)

  • 전준표;전수민;조남욱;인기호;이동호
    • 한국화재소방학회논문지
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    • 제25권3호
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    • pp.8-13
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    • 2011
  • 화재시 재산과 인명의 피해를 최소화하기 위하여 건축물의 규모 및 용도에 따라 방화구획을 설치하여 화재 확산을 방지하도록 제도화 되어 있다. 방화구획의 개구부에는 방화문이 시용되며, 이러한 방화문의 성능기준은 국토해양부 고시로 규정되어 있다. 현재 방화문에 대한 국내 기준은 비 차열성능 위주로 되어있으며 복사열로 인한 화재확산 위험성에 대한 기준은 제시되고 있지 아니하다. 이에 본 연구에서는 방화문의 구조 및 재료별 복사열을 측정하여 복사열에 의한 화재확산 위험성을 확인하고 방화문 성능기준 추가 필요성을 제시하고자 한다.

화재감지 센서 작동시간 및 열방출률에 대한 실험연구 (A Experimental Study on the Heat Release Rate to activate Fire Detection Sensor)

  • 홍성호
    • 전기학회논문지
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    • 제61권9호
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    • pp.1358-1361
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    • 2012
  • This paper presents a study on the analysis for activation time and threshold value of heat detection sensor using HRR(Heat Release Rate). And it is represented to quantity of heat to activate heat detection sensor. The experiment is conducted to measure activation time and HRR of fire detection sensor burning alcohol and n-heptane. In order to burn the alcohol and n-heptane using $43.5cm(L){\times}43.5cm(W){\times}5cm(D)$ and $33cm(L){\times}33cm(L){\times}5cm(D)$ steel pan and the quantity of alcohol and n-heptane are 2.5 L and 650 g, respectively. The results show that peak HRR are in case of alcohol 66.13 kW and in case of n-heptane 151.64 kW, respectively. Total heat releases of heat detection sensor are in case of alcohol approximately 20.7 MJ and in case of n-heptane approximately 18 MJ, respectively.

Fusible Link Type 감열체 성능시험보고 (A Report on Test Results of Fusible-Link Type Heat Responsive Links)

  • 권오승
    • 방재기술
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    • 통권10호
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    • pp.5-8
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    • 1991
  • This report is explained about test results of heat responsive links for fire protection service, such as fire dampers and fire doors, automatic fire suppression systems and so forth. The testing program was progressed divided by two testing items, external appearance test and performance test. The object of this report is present the problem which appear from the analysis of test results.

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MICROWAVE 가열 건조에 의한 내화 점토의 열에너지 분포 특성 연구 (A Study on the Characteristics of Heat Energy Distribution of Fire-Proof Clay with Microwave Heating Drying)

  • 이승준;김윤제
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2001년도 추계학술대회논문집B
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    • pp.752-757
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    • 2001
  • The characteristics of heat energy distribution on the fire-proof clay with microwave heating drying are numerically investigated using finite element method. The modelled regular hexahedron chamber$(50cm\times50cm\times50cm)$ filled with air consists of vertical heat source and sink walls, a fire-proof clay model, and adiabatic plates on the top and bottom walls. With different geometrical aspect ratios of the fire-proof clay model, the heat energy distribution is throughly investigated. The model gave a good prediction of the microwave heating characteristics of fire-proof clay. The optimal shape of the fire-proof clay for given chamber geometry and microwave power is analyzed.

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건축물의 적재가연물 특성에 관한 연구 -대형서점의 적재가연물 연소발열성상- (Characterization of Live Fire Load in Buildings - Heat Release Characteristics of Typical Live Fire Load in Bookstore -)

  • 남동군;장곡견웅이;정종진;임우섭;사공성호
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 2008년도 추계학술논문발표회 논문집
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    • pp.3-6
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    • 2008
  • Heat release characteristics of live fire load are an important parameter for performance oriented fire safety design of a building. While investigations have been carried out on the fire load and its burning behavior in office, residential and commercial buildings and so on, little effort has been paid for the rational treatment of fire load in bookstore. In this report, burning behavior of typical combustible objects in bookstore are studied by measuring heat release rates of bookshelf with book.

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알루미늄 호일 부착 발포 폴리스티렌 단열재의 열전도율, 열방출시험 및 가스 유해성 시험 (Heat Transfer Coefficient, Heat Release and Gas Hazard Tests for Expanded Polystyrene Heat Insulating Materials with Aluminum Foil)

  • 공하성
    • 대한안전경영과학회지
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    • 제20권4호
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    • pp.15-19
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    • 2018
  • The purpose of this study is to enhance heat insulation effect and to decrease fire hazard by attaching aluminum foil to expanded polystyrene, which is mainly used for insulating materials, to have fire retardant. The result of the test confirmed that the insulating materials, expanded polystyrene of $10kg/m^3$ and $14kg/m^3$ of density attached aluminum foil on both sides, showed 12%, 14% of improved heat transfer coefficient respectively compared to existing expanded polystyrene of the same density. Besides, they met all the standards for the testing of heat release and gas hazard. On the other hand, the one made of general expanded polystyrene could not meet the standards of the heat release test and the gas hazard test.

RISK EVALUATION OF CARBON MONOXIDE IN COMPARTMENT FIRE

  • Kim, Kwang Il
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
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    • pp.66-76
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    • 1997
  • In order to investigate the generation of carbon monoxide and heat loss of incomplete combustion in compartment fires, an experiment was conducted in a small scale compartment by using methanol as a fuel. The concentration of carbon monoxide and the toxicity parameter showed high values when the mass air - to - fuel stoichiometric ratio is under 1.0. The constitution of the combustion gas was showed to estimate it from the . The heat loss due to incompleteness of combustion is about one third of heat of combustion in case of under 1.0.

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열방출률을 이용한 열감지기의 오동작 경계값 분석 (An Analysis of False Alarm Threshold Value by Heat Detector Using Heat Release Rate)

  • 홍성호;김두현
    • 한국화재소방학회논문지
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    • 제17권3호
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    • pp.26-30
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    • 2003
  • 본 논문은 화재발생시 열감지기가 오동작하는 특성을 열방출률(Heat Release Rate : HRR)을 이용하여 경계값을 정량적으로 나타내고 그 경계값을 기준으로 감지기의 오동작 영역을 분석하였다. Crib 형태의 목재를 가지고 small-scale의 화재실험을 통하여 화재감지기의 동작시간 등을 측정하였고 이를 이용하여 화재감지기가 동작하는 순간의 HRR을 계산하였다. 화재실험으로부터 얻은 변수를 가지고 화재감지기가 오동작하는 HRR의 경계값을 계산한 결과 정온식 감지기는 20.24 kW 차동식 감지기는 13.59 kW로 나타났다.

주거용 컨테이너 화재 특성에 관한 실험적 고찰 (An Experimental Study on Characteristics of the Residential Container Building Fire)

  • 이정윤;정기창;김홍
    • 한국안전학회지
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    • 제23권1호
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    • pp.24-27
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    • 2008
  • The recent fire incident in an elementary school of Chonan city causes the media focus on the fire safety of residential container buildings. In this study, real fire tests were conducted in this kind of buildings. Fire temperature and radiant heat flux were measured, in order to investigate the hazard-reduction effects during the fire emergency of residential container buildings. According to the test results, flash over occur in 10 minutes, peak fire temperature was $935.5^{\circ}C$, peak radiant heat flux was $24.99kW/m^2$ at 8minutes after residential container building fire.

룸코너 시험기의 발열량 측정에 대한 불확도 산정 (Calculation of Uncertainty in Measuring Heat Release Rate in Room Corner Test)

  • 노광철;김치훈;이승철;이덕희
    • 한국화재소방학회논문지
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    • 제26권1호
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    • pp.16-22
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    • 2012
  • 화재시험에 있어서 정확한 발열량의 측정은 시험체의 화재 안정성을 결정하기 위한 중요한 정보이다. 발열량 측정값은 측정 인자들의 오차에 기인하여 영향을 받는다. 본 연구에서는 한국철도기술연구원에 설치된 룸코너 시험기에 대한 불확도의 인자를 분석하였고 이를 이용하여 KTX 내장재 화재시험의 발열량 측정 불확도를 계산하였다. 화재 발열량 불확도 계산 결과, 화재시작단계에서 불확도가 매우 높은 값으로 나타났고 화재가 성장하면서 불확도는 점차적으로 감소하였다. 불확도 인자들 중 산소 농도가 발열량 측정 불확도에 가장 크게 기여하는 것으로 나타냈다.