• 유기물자원화
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• 제9권4호
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• pp.105-110
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• 2001

쓰레기의 효과적인 처리방안을 제시하고 장래 대책을 수립하는데 자료로 활용하도록 하기 위해서 순천시 생활쓰레기의 물리 화학적 특성을 조사하였다. 발생 쓰레기의 계절별, 성상별 특성을 조사 분석하여 다음의 결과를 얻었다. 생활쓰레기의 겉보기밀도는 가연성쓰레기가 $219kg/m^3$, 비가연성쓰레기는 $391kg/m^3$로 나타났다. 가연성쓰레기 중에서 음식물쓰레기의 습윤질량 중량비 가중평균은 38.1%를 차지하였으며, 음식물쓰레기를 제외한 가연성쓰레기는 49.6%를 나타내었다. 음식물쓰레기를 제외한 가연성쓰레기의 수분함량, 가연분함량 및 회분함량의 가중평균은 각각 16.9%, 68.1% 및 15.0%로 나타나 소각처리의 특성이 양호하게 나타났다. 음식물쓰레기를 제외한 가연성쓰레기의 저위발열량은 2,962kcal/kg로 나타나 소각처리의 특성이 아주 양호하게 나타났다.

• 한국화재소방학회논문지
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• 제25권5호
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• pp.62-68
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• 2011

본 연구는 고체가연물의 초기 점화 및 화재성장과정에서의 발열량을 정량적으로 측정하고 가연물에 따른 화재성장특성 파악하고자 한다. 실험에 적용된 고체가연물은 단일/이중 목재크립, 단일/이중 쿠션, 카페트/목재크립이며 화재발달 단계에서 화재성장특성을 시간 제곱 화재성장 시나리오와 비교분석하고 고체가 연물의 화재성장 계수를 정량화 하였다. 고체가연물의 연소과정에서 소모되는 연료의 질량과 방출되는 총열에너지 개념을 이용하여 가연물의 평균 유효연소율을 평가하였으며 환기 및 화재조건의 영향을 분석하여 화재해석시 화재시나리오를 설정하는데 있어서 실질적인 정보를 제공하고자 한다.

• 한국전기전자재료학회논문지
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• 제13권10호
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• pp.865-870
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• 2000

In this paper, catalytic combustible gas sensor was fabricated and tested under flammable gases such as CH$_4$and $C_4$H$_{10}$by using Pt coil as a heater and/or temperature sensing element. Fine $Al_2$O$_3$powder was used for a bead and Pt, Pd noble metal powder for a catalyst. Resistance variation of Pt wire was traced by the changes of the gas concentrations in a chamber. Output voltage was then monitored to obtain the gas concentration from the resistance variation. In this experiment, MgO was used to protect cracks in the based and TiO$_2$to increase the sensitivity of the sensors. Water glass was also added to enhance the selectivity to the combustible gases.s.

• 한국안전학회지
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• 제5권1호
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• pp.7-18
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• 1990

This study measured the smouldering temperature of dust layer for various combustible natural polymer material by practical apparatus. The dust layer was either put on the preheated plate of constant temperature, or formed with cylinderical metal sleeve of various diameters and depths at room temperature and then heated up to a pre-determined smouldering temperature. Plots of arrival times versus smouldering temperature were made to compare the smouldering characteristics with kinds of dusts. The natural polymer material was divided into theree groups by characteristics of smouldering mechanism. This groups are cellulose group, lipide group and glucose group.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 전기설비
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• pp.37-38
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• 2006

In this paper, the fire characteristics of circuit breakers for low voltage during switching arcs were analyzed according to the characteristics of combustible materials. Arc dispersion and ignition process were taken by high speed imaging system and digital camera. In this experiment, four resistors were connected as loads. To discover the fire characteristics of circuit breakers by combustible materials, ethanol and cotton were installed as combustibles near contacts respectively. In case of ethanol, fire broke out near the contacts while switch was turned on and turned off. Whereas, in case of cotton, fire broke out near deteriorated contacts while switch was turned off.

• 한국환경보건학회지
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• 제28권2호
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• pp.99-108
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• 2002

This study was carried out to evaluate the Physicochemical characteristics of mined waste(separated waste and soil) and to predict environmental effect of an old landfill site located at north of Seoul. Municipal solid waster(MSW) had been disposed of at the old landfill site used in this study for about 2 years(1990-1992). The old landfill site selected for this study had accepted mainly municipal solid waste. The landfill-mined waste contained separated waste (40.9%) and soil(59.1%) by wet weight basis. The separated waste consisted of combustible(91.0%) and non-combustible(9.0%). The combustible waste was mainly non-biodegradable plastics. The low heating value of the separated combustible waste, which is calculated by Dulong's equation, was as high as 3,470kcal/kg. According to the Korean Extraction Procedure, separated waste and soil were proved to be not hazardous. The total content of heavy metal in the separated waste and soil met standard of California State, USA. Therefore the separated waste may be relandfilled at a sanitary landfill site and/or burned up at an incinerator, and the separated old soil may be used ad landfill cover-soil at a sanitary landfill site. Water quality of two streams was grade IV, of which water could be used as industrial and agricultural water. The streams near the landfill site might not be contaminated by leachate from the old landfill site. It was estimated that organic matter in the old landfill site would not be actively biodegraded within a short period of time.

• 한국농공학회지
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• 제45권1호
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• pp.45-54
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• 2003

The effects of binder content and silica sand content on the durability characteristics of lightweight polymer concretes are examined. As a result, the flame lingering times using unsaturated polyester resin and non-combustible polyester resin were 60∼120 and 0∼4 seconds respectively, and the combustion lengths were 9∼11 mm and 0∼3 mm, respectively. Thus it is believed that the lightweight polymer concrete was incombustible and the light weight polymer concrete in which non-combustible material was added was perfectly non-combustible. The percent of original mass of lightweight polymer concrete, according to the freezing-thawing experiment, was below 0.3 %, which was much less than that of cement concrete. The pluse velocity, for the case of the binder content 28 %, showed the minimum decreasing rate for the lightweight polymer concrete with silica sand content of 50 %. The higher the binder content, the greater the durability. That is much higher than other material and believed that the freezing-thawing was suppressed by a low absorption.

• 대한안전경영과학회지
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• 제15권1호
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• pp.133-140
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• 2013

Recently developed a variety of architectural interior decoration according hwadoeme type of toxic gases generated during fire also are becoming diversified, resulting in fatal casualties occurred in the trend is also being increased. During a fire, toxic gas that is generated varies depending on the combustible material occurs. However, all combustible materials, including carbon, incomplete combustion of carbon monoxide which is generated in the most common toxic gases can be seen as one. Accordingly, in this study of organic solids that are generated in case of fire toxic gases, and briefly discuss the characteristics of the risks and, by far the most common Co gas for measures to prevent human casualties, seolbijeok, the temperature dependence, divided into four aspects of administrative daechaekdeung explained.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2011년도 추계학술대회
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• pp.55-66
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• 2011

Recently developed a variety of architectural interior decoration according hwadoeme type of toxic gases generated during fire also are becoming diversified, resulting in fatal casualties occurred in the trend is also being increased. During a fire, toxic gas that is generated varies depending on the combustible material occurs. However, all combustible materials, including carbon, incomplete combustion of carbon monoxide which is generated in the most common toxic gases can be seen as one. Accordingly, in this study of organic solids that are generated in case of fire toxic gases, and briefly discuss the characteristics of the risks and, by far the most common Co gas for measures to prevent human casualties, seolbijeok, the temperature dependence, divided into four aspects of administrative daechaekdeung explained.

• 한국연초학회:학술대회논문집
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• 한국연초학회 1999년도 42회 학술발표회
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• pp.9-12
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• 1999

Up to the 60's cigarette paper commercial grades were simply described as ' non combustible ', ' combustible ' or ' extra-combustible '. It was assumed that combustibility of the paper itself was correlated with cigarette combustibility. Since then, the characteristics of cigarette paper, like natural porosity and burning additives, which influence truly cigarette combustibility, have been described by various authors and it became clear to cigarette designers that paper combustibility was not generally a significant factor governing cigarette combustibility. On the other hand, for Roll Your Own(RYO)wrapping papers, the ECPCI has proposed to the CORESTA RYO Task Force to use paper combustibility, and specially the LCT test, to classify papers between low and high smoke delivery, and a new Task Force on PAPER COMBUSTIBILITY was recently set up to develop a recommended method. The objective of this presentation Is to show results demonstrating that for paper used on cigarettes, there is NO GENERAL CORTRELATION between PAPER and CIGARETTE combustibility. We will also show results confirming that, for the specific group of RYO booklet papers containing no burning additives, there is a correlation between paper combustibility and FCSA's Combustibility/smoke delivery. This apparent discrepancy will be explained by reviewing the role played by the various characteristics of cigarette paper in governing cigarette combustibility.