• 제목/요약/키워드: Cone-calorimeter

검색결과 211건 처리시간 0.028초

CONE CALORIMETER STUDIES OF WOOD SPECIES

  • Grexa, Ondrej;Horvathova, Elena;Osvald, Anton
    • 한국화재소방학회:학술대회논문집
    • /
    • 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
    • /
    • pp.77-84
    • /
    • 1997
  • Cone calorimeter measurements can be used for the calculation of effective material properties, which can be used as input parameters in modeling of fire. Main parameter measured in Cone calorimeter is heat release rate. Some other parameters as time to ignition, effective heat of combustion, mass loss rate or total heat released is also measured in Cone calorimeter. Total heat released is important from the point of view of total energy available in material in Fire situation. Cone calorimeter. measurements were done on several wood species (oak, beech, spruce, poplar). Measurements were provided at external irradiances 30, 50 and 65 ㎾/$m_2$ in horizontal orientation. Heat release rate data were evaluated and compared as a function of external irradiance for various species of wood. furthermore the influence of external irradiance on effective heat of combustion and total heat release was also evaluated for the period of flame combustion.

  • PDF

Cone Calorimeter와 Furniture Calorimeter를 활용한 주거시설의 대표적 가연물 연소 특성 (A Study on the Cone Calorimeter and Furniture Calorimeter using Residential Combustible Combustion Characteristics)

  • 김동은;김봉찬;이재원;이주희;권영진
    • 한국화재소방학회:학술대회논문집
    • /
    • 한국화재소방학회 2011년도 추계학술논문발표회 논문집
    • /
    • pp.193-196
    • /
    • 2011
  • 본 연구는 주거시설의 대표적인 가연물을 고정가연물과 적재가연물로 구분하여 가연물의 연소특성을 실험결과에 대한 연구이다. 고정가연물은 7종에 대하여 Cone Calorimeter로 적재가연물은 2종 Furniture Calorimeter로 실험을 실시하였다. 고정가연물의 경우 접착성분을 지니고 있는 시트지의 경우가 HRR등이 높게 측정되었으며, 적재가연물의 경우 섬유성분과 플라스틱으로 구성되어 있는 의자가 높게 측정되는 것을 알 수 있었다.

  • PDF

콘칼로리미터를 이용한 구조용 목재의 탄화 특성 (Charring Properties of Structural Timbers using Cone Calorimeter)

  • 홍성인;안재홍;최윤정;김병일
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2023년도 가을학술발표대회논문집
    • /
    • pp.85-86
    • /
    • 2023
  • In this study, charring properties such as charring layer and mass change of wood with temperature were investigated through cone calorimeter test on douglas-fir, which is representative of various wood structures. the results showed that ignitions at 390 degrees and a charring layer is formed.

  • PDF

Cone-Calorimeter와 연기밀도챔버를 이용한 고무발포단열재의 연기밀도 비교 (Smoke Density Comparison of Rubber Foam Insulator by the test between Cone-Calorimeter and Smoke Density-Chamber)

  • 조희기;이덕희;이철규;이동우
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2005년도 추계학술대회 논문집
    • /
    • pp.941-946
    • /
    • 2005
  • Kinds of Sound & Thermal Insulator are being used for materials of railroad vehicles as a barrier of beat and noise. Glass Wool, PE foam, PP foam are such kinds of materials. In case of fire, it shows various combustion properties. In this study, we compared the Smoke Density of the Rubber Foam Insulator by test between Cone-Calorimeter and Smoke Density-Chamber. The results showed that the Rubber Foam Insulator had an important role in the insulator thickness and the test method, We forecast the smoke density by test between Cone-Calorimeter and Smoke Density-Chamber.

  • PDF

조사연구-콘칼로리메타를 이용한 화재시험에 대하여

  • 이두형
    • 방재기술
    • /
    • 통권19호
    • /
    • pp.22-28
    • /
    • 1995
  • The rate of heat release is probably the single most important measure of fire hazard. Several tech-niques were developed for the measurement of rate of heat release, but were not suitable for fire test-ing purpose. Recently the application of oxygen consumption principle made it possible to development of well-characterized heat release rate measurement apparatus, the furniture calorimeter for large-scale fire tests and the cone calorimeter for bench-scale fire tests. The cone calorimeter can be used to determine the ignitability as well as heat release rate and smoke development, mass loss rate, combustion gas production etc. from burning materials. Thus, test method using cone calorimeter, an internationally recognized and accepted for the evalua-tion of fire properties, is a very promising tool for combustion study on various kind of materials and products.

  • PDF

LSC를 이용한 생활용품의 발열량 특성에 관한 연구 (A Study on the Heat Release Characteristic of Household Items using LSC(Large Scale Cone Calorimeter))

  • 박영주;백창선;이해평;홍이표
    • 한국안전학회지
    • /
    • 제30권3호
    • /
    • pp.38-44
    • /
    • 2015
  • For this study, fire tests were performed targeting household items (Sofa, Drawer, Refrigerator, Washing machine) using a large cone calorimeter (Large Scale Cone Calorimeter, LSC). The data were obtained focusing on the fire characteristic of the data when the actual fire occurs. The study results showed the following mean HRR of the household items; drawer 2843 KW, sofa 2939 KW, washing machine 719 KW, refrigerator 2907 KW, and THR is found in sofa 2202 MJ, drawer 1559 MJ, refrigerator 1193 MJ, washing machine 627 MJ. From the result, it could be found that the sofa can cause significant heat generation when the fire occurs, and the flashover tendency was found relatively high in compartment fire. In addition, a weight of the four our household items was reduced sharply in a similar time (20min before and after) degree after ignition. The drawer and sofa which has a high heat release can be considered to speed up the fire spread as their weight decrease rapidly and showed relatively weak to the fire compared to the refrigerator and washing machine.

콘 칼로리미터를 이용한 바이오매스의 연소특성에 관한 연구(I) - 단풍잎, 은행잎, 덤불, 솔잎에 대해서 - (A Study on the Combustion Characteristics of Biomass using Cone- calorimeter (I) : the Case of Maple Leaves, Gingko Leaves, Bush, Pine Needles)

  • 박병현;박덕신;조영민;박은영;이철규
    • 한국대기환경학회지
    • /
    • 제21권4호
    • /
    • pp.459-469
    • /
    • 2005
  • In recent years, concerns have been growing globally regarding greenhouse gases. Open burning of biomass causes emission of a number of greenhouse and other gases and substances. This paper studied an analysis on the characteristics of four types of biomass using duel type cone calorimeter. Cone calorimeter is widely used for assessing combustibility of materials in Europe. As a result, we evaluated several characteristics of biomass, such as heat released rate, smoke production rate, CO, $CO_2$ production and mass loss rate, and so on. $CO_2$ is currently responsible for over $60\%$ of the enhanced greenhouse effect, and may be the most important contributor to future. $CO_2$ production for biomass in the range of $1.74\~1.99kg/kg$ is similar to previous research conducted by Bhattacharya et al. (2002a).

화재연구를 위한 대형 콘 칼로리미터의 설계 (Design of Large Cone Calorimeter for the Fire Study)

  • 이의주
    • 한국화재소방학회논문지
    • /
    • 제20권4호
    • /
    • pp.65-71
    • /
    • 2006
  • 최근에 화재연구가 활발해짐에 따라 화재특성을 평가하기 위해 중요한 물리량인 발열량 등을 측정하여 모델의 검증과 화재현상의 이해를 도모하고 있다. 이전의 화재연구에서는 실험공간이나 재정적 여건 때문에 축소모형 실험을 주로 수행하였지만, 다양한 화재의 특성을 축소모형에서 모두 도출할 수 없으므로 실제 규모의 화재에서 특성을 조사하는 것이 필요하다. 그러므로 보통 5MW 이상의 열량을 측정할 수 있는 대형 콘 칼로리미터를 20년 전부터 외국에서는 개발하였으며, 새로운 관련기술과 화재에 관한 지식을 바탕으로 개선되고 발전되어 왔다. 본 연구에서는 대형 콘 칼로리미터를 설계할 때 고려하여야 할 방법들을 각 요소별로 설명하고, 이를 통해 향후 개선을 위해 요구되는 지식이나 기술들을 제안하였다.

콘칼로리미터 연소가스 FT-IR 분석을 위한 국제표준 초안의 비교시험 결과분석 (Results of a Round-Robin Test for the Draft International Standard on FT-IR Gas Analysis of Fire Effluents from a Cone Calorimeter)

  • 최정민;박계원;정재군
    • 한국화재소방학회논문지
    • /
    • 제33권3호
    • /
    • pp.1-8
    • /
    • 2019
  • ISO TC 92에서는 콘칼로리미터의 연소가스를 FT-IR 방식의 가스분석기로 분석하기 위한 표준을 개발하고 있다. 2018년에는 표준 초안(WD 21397)의 절차에 따라 6개 기관이 참여하여 표준 초안의 반복성 및 재현성을 평가하였다. 시험대상 시료는 polymethyl methacrylate (PMMA), 경질 폴리우레탄 보드 및 PVC 장판이었고 콘칼로리미터 시험결과 중 착화시간(s), 최대 열방출률(kW·m-2), 총 방출열량(MJ·m-2) 및 유효연소열(MJ·m-2·kg-1)을, 그리고 FT-IR 가스분석결과 중 독성가스의 최대 농도(µL·L-1), 가스 발생량(g) 및 가스 수율(g·g-1)을 ISO 5725-2에 따라 통계 분석하여 정밀도를 평가하였다. 이상치(outlier)는 발견되지 않았으며 콘칼로리미터 시험의 반복성(sr/m)은 1.5%, 재현성(sR/m)은 9.8%로 나타났고 FT-IR 가스분석의 반복성은 12.9%, 재현성은 27.9%로 나타났다.