A Study for Characteristics of Water that Penetrates Wood Flour due to Changes of Concentration of BDG

Kong, Il-Chean; Park, Il-Gyu; Lim, Kyung-Bum; Rie, Dong-Ho

doi:10.14346/jkosos.2013.28.3.074

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…심부 화재는 청도 대흥농산의 화재사례와 같이 다공성 고체가연 물질에서 발생하는 화재의 한 형태로써 가연물 내부에서 연 소하는 화재를 의미한다 (2,3) . 산소가 부족한 환경의 경우, 목 분과 왕겨 등 입도가 작은 분체형 다공성 물질들은 산화제 와 접촉하는 면적이 목재보다 넓어 훈소가 발생하기 쉽고, 목재의 경우 동일 환경에서 화재가 자연소멸하기 쉽다 (4) .…”

Section: 서 론unclassified

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire

Kim¹,

Rie²

2015

Fire Science and Engineering

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Real scale fire tests was carried out for extinguishing performance evaluation of the wetting agent. The experiment was conducted in accordance with a Class A fire extinguishing test methods specified in the 'Type Approval of the Manual System Fire Extinguisher and Technical Standards of Test'. In addition, the subjects of this experiment were the wood flour and rice husk. Fire-fighting water, the three kinds of wetting agents used in the country and this study was used, was undertaken to determine a clear discrimination of the water and wetting agent. In the experimental results, it was confirmed that the internal temperature is maintained long time in the case of water. The internal temperature were rapidly lowered in the experiment of wetting agents. Therefore, the discrimination of extinguishing ability was confirmed by the temperature distribution in accordance with time. Based on the results of this experiment, this study is expected to be used as a underlying material on presenting a method of optimized performance evaluation of wetting extinguishing agent.

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Section: 서 론unclassified

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire

Kim¹,

Rie²

2015

Fire Science and Engineering

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“…(2) . 심부 화재는 청도 대흥농산의 화재사례와 같이 다공성 물질의 심부까지 고온이 전도되어 연소분위기가 형성되지만 산소 의 접촉이 제한되어 화염연소는 발생하지 않는 훈소상태 를 의미한다 (3,4) . 해당 사고의 경우 사고 발생 시 대처에서 빠른 진화가 이루어지지 않음으로써 사고의 규모가 크게 증가하였다.…”

Section: 서 론unclassified

Experimental Study on Moisture Content According to Addition of Surfactants

Kim¹,

Rie²

2015

Fire Science and Engineering

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The fire accident is a representative type of disaster that can largely impact on business. Therefore, precautionary measures and rapid initial response is very important when a disaster occurs. The storage of porous combustibles is inevitable in coal yard, plywood processing industry, and others that are currently operating. Initial fire fighting of fire and identifying the ignition point in such a porous combustible storage space are so difficult that if the initial response is failed, being led to deep-seated fire, surface fire is likely to result in secondary damage. In addition, deep-seated fire can cause personal injuries and property damage due to a large amount of toxic gases and reignition. Therefore damage reduction measures is required around the storage space to handle a porous flammable. Improving the penetration performance of the concentration of the surfactant is carried out as underlying study, which is about an deep-seated fire extinguishing efficiency augmentation when using wetting agents. The porous materials used in the experiments is radiata pine wood flour, which occupies more than 75% of the domestic wood market. Fire fighting water is selected as Butyl Di Glycol (BDG), which is being used for infiltration extinguishing agent, and the experiment was carried out by producing a standard solution. The experiment was carried out on the basis of the Deep-Seated Fire Test of NFPA 18. The amount of watering, porous material to the internal amount of penetration, and runoff measurement out of the porous material was conducted. According to experimental results, as the surface tension is reduced, the surfactant concentration macroscopic penetration rate decreases, but infiltration to a porous material is shown to have growth characteristics.

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“…Torero and Fernandez-Pello (1995), Palmer (1957), and Kim and Rie (2013) focused on the implementation of deep-seated fires and the transfer rate. Kong et al (2013) studied the effect of the surfactant on the penetration performance, and Lazghab et al (2016) described the limitations as well as the merits and demerits of the methods of evaluating the wettability of the solid powders reported in the literature, providing the basis for obtaining appropriate data and selecting system specifications. The previous studies conducted to date have been focused on the implementation of deep-seated fires and the penetration performance in non-fires, but not many studies have been conducted on the extinguishing of deep-seated fires.…”

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A Study on Fire Risk Reduction of Porous Combustible Storage

Kim

Rie

2017

BioResources

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As biomass has become increasingly important, wood pellets are becoming more widely used, and the storage of wood flour, which is the raw material of wood pellets, has become inevitable. The purpose of this study was to reduce the economic losses from fires during storage of porous combustible materials. To achieve this purpose, the authors analyzed and compared the wood flour loss rate between the use of water and the use of wetting agents to extinguish a deep-seated fire through a scale model experiment. To do this, the authors measured the penetration amount of the water and dilute solutions of wetting agent, the weight change of the wood flour holder, and the emissions on a real time basis when that spray amount was the same. Furthermore, the authors analyzed the calorific value and combustion gas to examine the reusability of the wood flour with the added wetting agent. This study quantitatively demonstrated that the active use of wetting agents in wood flour storage fires dramatically reduced the fire loss rate of raw materials and resulted in early fire extinguishing, which minimizes companies' economic loss.

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A Study for Characteristics of Water that Penetrates Wood Flour due to Changes of Concentration of BDG

Cited by 4 publications

References 4 publications

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire

Experimental Study on Moisture Content According to Addition of Surfactants

A Study on Fire Risk Reduction of Porous Combustible Storage

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