• 제목/요약/키워드: Extinguishing Agent

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질소와 노벡 혼합가스를 이용한 청정소화약제의 소화성능에 관한 연구 (A Study on Clean Agent Fire Extinguishing Ability Using Nitrogen and Novec Mixtures Gas)

  • 임우섭;정종진;남동군;사공성호;김종원;최근주
    • 한국안전학회지
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    • 제23권6호
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    • pp.76-83
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    • 2008
  • In the course of increasing in human and material damage caused by fire, it is an important research field to develop clean extinguishing agent which does no harm to global environment as well as has a good extinguishing efficiency. This research is a basic step to develop a new clean extinguishing agent. In order to get a satisfactory result, we tested fire extinguishing ability using nitrogen and Novec mixtures gas which are inert gas and new clean extinguishing agent. We used Cup Burner Test made by international standard ISO-14520 regulations of gaseous extinguishing agent ability test, and the fuels used in the test are n-heptane, methanol, ethanol, iso-propanol and 1-butanol. The experimental results of flame extinguishing concentration are n-heptane 6.54%, methanol 8.47%, ethanol 6.98%, isopropanol 6.10% and butanol 6.54% by pure Novec agent. So the finding is that a new clean agent, Novec has an efficient extinguishing ability in a state of gas. Also, in a test as to mixtures gas of nitrogen and Novec, it has a good result for minimum oxygen concentration is under 16%.

가스계 소화설비의 제한사항 및 성능평가를 위한 배관 내 약제비율에 관한 연구 (A Study on Percent Agent in Pipe as a Criterion to Evaluate Limitations and Performance of Gaseous Fire Extinguishing Systems)

  • 손봉세;김희우
    • 한국화재소방학회논문지
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    • 제21권4호
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    • pp.1-11
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    • 2007
  • 본 연구에서는 할론 1301 및 이산화탄소를 비롯한 가스계소화설비의 성능을 시험하고 평가하기 위한 가장 중요한 핵심 요소인 배관내 약제비율, 관경비 등 소화성능에 영향을 미치는 가스계소화설비의 제한사항 및 성능확보에 필요한 요소에 대하여 연구하였다. 또한 본 연구에서는 관련 국내외 기준 분석 및 국내 가스계소화설비의 성능평가에 관한 인정기준(KFIS 002)에 따른 시스템 성능시험을 실시하고 결과를 비교 분석하였다.

증점제를 함유한 미분무수의 목재화재 소화효과 (Efficiency of Water Mist Suppression System Containing Viscosity Agent to Extinguish Wood Cribs Fire)

  • 김민형;신창섭
    • 한국안전학회지
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    • 제29권4호
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    • pp.78-84
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    • 2014
  • Viscosity agents were added to water to improve extinguishing performance of low pressure water mist suppression system on wood cribs fire, and a small scale wood cribs fire experiment was conducted to measure the extinguishing performance. CMC and agar were used for viscosity agent and as the amount of viscosity agent enlarges, it showed the increase of the viscosity of aqueous solution and the decrease of the fluidity. On wood cribs fire experiment, the extinguishing efficiency was improved with supplemental viscosity agent as it enhanced the adhesive time of aqueous solution on the wood, and therefore expanded the contact time of fire surface. The surface tension of aqueous solution was decreased with the addition of agar which to be assumed as an increase factor of extinguishing efficiency. By the extinguishing experimental result, the most effective extinguishing agent was CMC 0.6 wt.%, with the flame suppression time and the extinguishing time were reduced by 70s and 93s respectively at this concentration.

단백포소화약제의 유동성 변화에 따른 소화 특성 (The Extinguishing Characteristics by Fluidity Variation of Protein Foam Extinguishing Agent)

  • 신창섭;정현정
    • 한국안전학회지
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    • 제29권2호
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    • pp.18-23
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    • 2014
  • Foam extinguishing agent is widely used for extinguishing combustible liquid fires. Compared to other foam type extinguishing agents, protein foam has relatively low cost and low toxicity and produces stable foam blanket which is excellent in heat resistance and sealability, despite it has weak fluidity. Therefore the study investigated foaming characteristics followed by various factors affecting the fluidity of the protein foam extinguishing agent. The extinguishing characteristics differentiated by the changes in fluidity were also experimented. Foaming performance was compared by measuring the expansion ratio and the 25% drainage time. Moreover, the 25% drainage time and the extinguishing time was compared. The results showed that the 25% drainage time and the expansion ratio were increased as the pressure of nozzle and the concentration of hydrolyzed protein liquid enlarged. However the foaming and extinguishing performance were not improved when the condition exceeded certain level of pressure and concentration. The fastest fire extinguishing condition was the nozzle pressure 4bar with the 85wt.% of concentration of hydrolyzed protein liquid.

ESS 화재전용 소화약제 및 소화시스템 개발에 관한 연구 (A Study on the Development of Fire Extinguishing Agent and Extinguishing System for ESS Fire)

  • 이연호;이주형;김수진;전성호;최병철;오승주;김시국
    • 한국화재소방학회논문지
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    • 제34권2호
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    • pp.147-155
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    • 2020
  • 본 논문은 ESS 화재전용 소화약제 및 소화시스템 개발에 관한 연구이다. ESS 화재를 진압하기 위해 제작된 소화약제는 침윤제 타입으로 주된 소화효과인 냉각작용과 더불어 질식작용과 함께 표면장력 및 점도를 낮춘 침투성이 높은 소화약제로 ESS 모듈 내부의 배터리 셀까지 소화약제가 침투 가능한 특징이 있다. 소화시스템의 경우 랙 단위로 화재를 진압하는 국소방출방식으로 설계하였고, 소화효과를 극대화하기 위해 랙에 장착되는 일반형 노즐과 ESS 모듈 후면 홀에 삽입하는 360° 회전형 노즐을 제작하고, 가스방출압력에 의해 소화약제가 강하게 방사되도록 하였다. ESS 모듈 1단위 및 모듈 3단위 화재진압성능 실험결과 소화약제 방사 후 각각 8 s 및 9 s 만에 눈에 보이는 화염이 모두 소멸되었다. 또한, 소화약제 방사종료 후 600 s 동안 재발화 여부를 확인한 결과 모든 화재진압성능 실험에서 재발화가 일어나지 않고 ESS 화재가 완벽히 진압되는 것을 확인할 수 있었다.

가스계 청정소화약제의 소화특성과 첨가제에 따른 영향 (Flame Extinguishing Characteristics of Clean Gaseous Agents and Effects of Additives)

  • 신창섭;김성민
    • 한국안전학회지
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    • 제23권6호
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    • pp.95-99
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    • 2008
  • Halon was known as a cause of the ozone layer destruction. In 1987, it was designated as one of the ozone-layer-destroying materials in the Montreal Protocol. Therefore substitutes of Halon agent has been developed including inert gas extinguish system, which is one of the most widely used fire extinguishing system. This study intended to increase the efficiency of inert gas extinguishing agent by using inert gas additives. As IG-541 shows high extinguishing power, the experiment was performed to measure the effects of gaseous additives to it. Cup-burner fire extinguishing apparatus was used with n-Heptane fuel. Among many of pure inert gaseous agents, Helium showed the most excellent extinguishing power. When Helium was added to IG-541, fire extinguishing power was increased and the concentration of oxygen in chimney also risen. By adding Helium to IG-541, the effectiveness of inert gas fire extinguishing system is able to be increased.

미분무수 소화설비의 소화특성 실험 (Experimental Study on the Fire Extinguishing Characteristics of Water Mist System)

  • 황원준;김황진;오규형;이성은
    • 한국화재소방학회논문지
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    • 제23권2호
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    • pp.78-84
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    • 2009
  • 본 연구에서는 형식이 각기 다른 3종류의 미분무수 노즐을 사용하여 방사높이와 화염의 위치 변화에 따른 소화성능 실험과 포 소화약제를 혼합한 소화성능 실험을 수행했다. 소화성능 실험에서는 미분무수 노즐의 높이를 4m, 3.5m, 3m로 변화를 주었으며 연료 팬을 노즐 중심으로부터 0m, 0.5m, 1m의 변화를 주었다. 포 소화약제는 3%형 AFFF(Aqueous Film Forming Foam)를 사용하였다. 실험결과 개구부의 유무는 소화에 미치는 영향이 적었으며, 포 소화약제를 혼합한 미분무수의 소화성능은 약제를 혼합하지 않은 경우에 비하여 우수하였다.

노벡을 이용한 유기물의 소화농도 측정에 관한 연구 (A Study on Measuring of Fire Extinguishing Concentration for Organic Material Using Novec)

  • 임우섭;사공성호;정종진;남동군;최근주;안상수;김종원
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 2008년도 추계학술논문발표회 논문집
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    • pp.456-460
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    • 2008
  • This study was on basic step to develop a good clean extinguishing agent. In order to get a satisfactory result, we tested fire extinguishing ability using Novec which is inert gas. In study used to Cup Burner Test its made by international standard ISO-14520 regulations of gaseous extinguishing agent ability test. The finding is that a new clean agent, Novec has a very efficient extinguishing ability in a state of gas.

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최적설계법을 응용한 가스계 소화설비의 약제방출량 산출 (Application of Optimal Design Method to Agent Discharge Flow Calculation of Gaseous Fire Extinguishing Systems)

  • 이동명
    • 한국화재소방학회논문지
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    • 제29권5호
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    • pp.51-56
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    • 2015
  • 본 연구에서는 설계프로그램의 공학적 분석의 수단 또는 가치공학 측면에서 원가절감 등의 목적으로 최적설계 이론과 공학적 이론을 접목시킨 최적설계법을 가스계 소화설비 중 청정소화약제 소화설비의 약제방출량 산출에 응용하였다. 청정소화약제 소화설비의 설계이론과 최적설계 이론을 바탕으로 약제방출량을 최적화시킬 수 있는 최적설계인자를 도출하였고, 이를 설계인자로 구축된 소화설비의 소화성능시험으로 최적설계법의 적합성 여부를 검증함으로써 다른 소화설비에도 최적설계법을 접목할 수 있는 기틀을 마련하였다. 방출헤드의 약제방출량 최적화는 방출헤드 및 배관의 내경, 약제도달시간, 유량과 압력변화 등의 소화약제 유동특성에 대한 제한조건에 의해 결정됨을 확인하였고, 방출헤드의 방출압력과 약제도달시간의 편차는 배관의 압력변화만큼 발생되고 상관관계가 있음을 알 수 있었다.

불활성계와 할로카본계 복합 소화약제 및 소화시스템 개발 (Inert and Halogenated compounds Fire Fighting Agent And Fire Fighting System Research)

  • 최근주;안상수;김종원;정종진
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 2009년도 춘계학술논문발표회 논문집
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    • pp.165-171
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    • 2009
  • A compound agent that mixes inert gas agents and halocarbon agents and a complex fire suppression system using the compound agent have been developed. The ultimate goal of this study is to develop the extinguishing agent which doesn't destroy the ozone layer and has low GWP and to develop the fire suppression system. As a result of the test and research for inert gas agents and halocarbon agents, nitrogen and FK-5-1-12 were selected finally and have been tested and studies for three years. Thus, the optimal extinguishing agent and fire suppression system have been accomplished. The performance of the agent and system was tested according to KFI performance test technical standards for gas fire extinguishing system and the fitness of the agent and system for a fire was certified by Korea Fire Industry Technology Institute (KFI).

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