Propagation Speed and Characteristic Analysis of Flame in Compartment Fires of Flammable Liquids

Joe, Hi-Su; Lee, Jae-Ou; Choi, Chung-Seog

doi:10.7731/kifse.2015.29.3.031

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…명시되어 있고, 실내 바닥재에 대한 명확한 기준이 마련되 어 있지 않다. 일부의 연구자들은 구획 화재의 흘림 실험에 의한 인화성 액체의 화염 전파 속도 (3) , 담유 실험에 의한 인화성 액체의 연소 패턴 (4) , PVC 용기에 담유된 인화성 액 체의 화염 패턴 (5) , 인화성 혼합유의 구획 화재에 의한 화염 의 전파 속도 및 특성 (6) , 유리 용기에 담은 휘발유가 연소 될 때의 연소 거동 (7) , 비닐바닥재 위에 휘발유를 뿌린 후 연소될 때의 특성 (8) , 비닐장판 위에서 연소된 인화성 액체 의 성장 특성과 탄화 패턴 (9) , 실내용 비닐장판의 유리전이 온도 및 중량 감소 (10) 구성요소는 충격과 차음기능의 효과를 결정하는 발포층, 치수 안정화와 내구성에 영향을 주는 보강층, 디자인적 요 소를 반영하는 인쇄층, 표면 보호와 청소가 용이하도록 코 팅처리 된 UV 코팅층 등으로 구성된다 (11,12) . Figure 1은 PVC 장판의 구조 및 명칭을 나타낸 것이다.…”

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Analysis of Vertical Combustion and Carbonization Patterns of Floor Materials When Using a Needle Flame

Park¹,

Choi²

2020

Fire Sci. Eng.

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This study analyzed flame growth characteristics and carbonization patterns when floor materials were burned vertically using a needle flame produced for this study. It was found that PVC flooring was fire retardant and the area under direct flame contracted inward. Vertical combustion causes solidification in the form of a lump at the bottom and also generates soot in a pattern that progresses upwards. This study found that laminated flooring exhibited no fire retarding characteristics and that the laminated layer of its upper surface was destroyed by fire, causing irregular delamination. The carbonization ranges at the left and right sides were determined to be symmetrical. A vertical combustion test of a sample carpet showed that it exhibited no fire-retarding characteristics. It was observed that if heat accumulated in the carpet, the flame formed an ascending air current, and that when flammable materials were present around the flame, they further accelerated the diffusion of the flame. The carbonization pattern at the carpet surface exposed to direct flame revealed that the carpet surface had melted and had flown downwards and that many tiny holes formed on it.

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Analysis of Vertical Combustion and Carbonization Patterns of Floor Materials When Using a Needle Flame

Park¹,

Choi²

2020

Fire Sci. Eng.

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“…기존의 연 구는 대부분 인화성 액체의 발화 패턴과 발화 가능성에 대 한 내용이다. 그런데 동물성 식품의 종류, 조리 용기의 재 질 및 후드의 작동 상태 등에 따른 발화 특성에 대한 연구 는 미진한 상태이다 (6)(7)(8)(9)(10)(11) .…”

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Flame and Carbonization Patterns of Animal-Origin Foods Ignited by Overheating

Lee¹,

Choi²

2019

Fire Sci. Eng

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Real-scale fire tests were performed on animal-origin foods using a gas stove with no overheating prevention device. When the animal-origin foods were ignited, a large quantity of white smoke and steam was generated from them; however, when they became dry and began to carbonize, a dark smoke was generated. Even after the gas stove was overheated for more than 5400 s, mackerel, pollack, chicken, etc., did not ignite. However, pork, beef, and tuna caught fire after 2643 s, 2819 s, and 6492 s of heating, respectively. The flame patterns of animal-origin foods were in the forms of a mixed laminar flow and a turbulent flow, and a halo pattern was produced. A sand glass form of the flame pattern was generated when a kitchen hood was operated, but a triangular flame pattern was produced when the kitchen hood was not operated. When the tuna in the pot was overheated, it spontaneously ignited after 6492 s, with the surface temperature of the kitchen hood rapidly rising to 464.5 ℃. Moreover, the temperature at the back of the pot, which was 6 cm away from the outer surface of the upper part of the pot, was 869 ℃ after 6660 s because of the radiant heat. The flame formed a sand glass pattern on the kitchen wall. When the kitchen hood was not operated, or when the flame grew lower than the height of the ceiling, a triangular pattern was formed.

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“…Figure 9(b)는 탄화된 단면 을 나타낸 것으로 비닐장판의 상부는 화열에 의해 코팅층이 탄화층으로 변형되었고, 경계층은 흰색을 나타낸다. 그리고 보이드층은 정상 제품과 차이가 없는 것을 알 수 있다 (10)(11)(12)(13)(14) . 료된 후 소손된 표면의 실체 사진이다.…”

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A Study on the Analysis of the Combustion Behavior and Carbonization Pattern of Vinyl Flooring on Which a Real-Scale Combustion Test Was Performed

Joe¹,

Choi²

2019

Fire Sci. Eng

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A real-scale combustion test was conducted on a vinyl flooring in a divided space, with 50 mL of an inflammable liquid sprayed on it. The combustion behavior of the vinyl flooring was studied in real time, and the carbonization patterns of the surface and cross-sections of the carbonized vinyl floor were analyzed. When the flame ignited by gasoline reached its peak, a continuously flaming region, intermittent flaming region, plume region, etc., were formed. The combustion of 50 mL gasoline on vinyl flooring took 26 s, and a halo pattern was observed. This test involved spraying kerosene evenly on the vinyl flooring and attempting to ignite the flooring using a gas torch, which failed. After the combustion of the vinyl flooring was complete, its carbonized range was measured to be 600 mm in length and 380 mm in width, and the carbonized area was 1000 mm 2. Heat transformed the coated layer of surface of the carbonized vinyl flooring into a carbonized layer, which became harder. The analysis of cross-section of the boundary surface of the carbonized vinyl flooring using a stereoscopic microscope showed that the vinyl flooring was bubbling, and that the white boundary layer at the bottom of the coated layer had disappeared.

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Propagation Speed and Characteristic Analysis of Flame in Compartment Fires of Flammable Liquids

Cited by 3 publications

References 4 publications

Analysis of Vertical Combustion and Carbonization Patterns of Floor Materials When Using a Needle Flame

Analysis of Vertical Combustion and Carbonization Patterns of Floor Materials When Using a Needle Flame

Flame and Carbonization Patterns of Animal-Origin Foods Ignited by Overheating

A Study on the Analysis of the Combustion Behavior and Carbonization Pattern of Vinyl Flooring on Which a Real-Scale Combustion Test Was Performed

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