• 산업경영시스템학회지
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• 제37권4호
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• pp.269-273
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• 2014

The objective of this study is to safety assessment for human body on the guided missile combustion products. This study is to verify the safety assessment when operating the interior missile ejection take on verify the safety of the human body. During the missile ejection of combustion products, this study is analyzed combustion products. Result are accepted NIOSH and KOSHA of the safe guideline, and 6 exposure gas to the specified values 42% (CO), 22% ($CO_2$), not detected (others) are within minimal exposures criteria of the reference value respectively. Contribution of these results supported that interior missile ejection during combustion products may have been ensured human safely. Therefore, the future for improving the environmental safety of the shooting projectile steel plate round, dust collector, ventilation and other facilities is to improve environmental safety and efficient renovated design needed by target focused areas.

• 한국가스학회지
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• 제21권1호
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• pp.52-58
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• 2017

2015 국민안전처 통계에 따르면, 화재 피해 중 연소생성물에 의한 피해가 가장 많은 사상자를 내는 것으로 나타났다. 이러한 이유로 최근 연소생성물에 관한 연구는 국내외에서 활발하게 이루어지고 있다. 국내에서는 연소 생성물이 사람에게 미치는 영향과, 화염의 전파속도에 미치는 영향이라는 관점에서 연구가 진행되고 있고, 해외에서는 연소생성물이 사람에게 미치는 독성 뿐만 아니라 offshore 대피소에 미치는 영향까지 연구되고 있다. 연소생성물은 독성을 가지고 있고, 시야를 가려 탈출을 방해하기 때문에 많은 연구에서 실험과 CFD시뮬레이션을 이용하여 연소 생성물 제거 설비의 최적화에 관한 연구를 진행하고 있다. 본 연구에서는 연소를 통한 독성가스 발생 모델과, 그 가스의 제거 시설에 대한 연구 동향을 분석하여, 추후 연소생성물 연구의 기준이 될 것으로 판단된다.

• 한국자동차공학회논문집
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• 제2권3호
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• pp.113-122
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• 1994

This paper describes the effects of combustion parameters on the characteristics of combustion products in swirling flow furnace. The concentration of combustion products and temperature distribution of flow field in the furnace have been investigated by numerical method. The fuel was injected into the furnace and the swirling device was constructed with three kinds of vane swirler at inlet port of furnace. The results of this study showed that the effect of combustion parameters on the concentration characteristics of carbon monoxide and nitrogen monoxide of combustion products. It was found that the pollutant formation wad dependent on the equivalence ratio and swirl intensity level.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2012년도 제45회 KOSCO SYMPOSIUM 초록집
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• pp.341-344
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• 2012

The prediction performance of the chemical kinetics for the numerical simulation of MILD combustion was investigated. A wall-confined turbulent methane jet combustor was adopted as a configuration. Four chemical kinetics, such as a global 3-step, WD4, Skeletal, and DRM-19, were investigated, The air stream of the wall-confined MILD jet combustor was diluted with combustion products. It was found that the DRM-19 was optimal for the numerical simulation of the MILD combustion.

• 한국초등과학교육학회지:초등과학교육
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• 제33권4호
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• pp.736-750
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• 2014

The purposes of this study were to investigate concepts of Korean and American elementary school pre-service teachers on combustion, and to compare the concepts of Korean pre-service teachers with those of American pre-service teachers. For this study, concept test on combustion was administered to 23 Korean and 18 American elementary school pre-service teachers. The test composed of 6 items: 'Definition of combustion', 'The reason why a candle in a glass bottle is blown out when the bottle was closed', 'The change of gases in the bottle when a candle burns in it', 'The combustion products of a candle', 'The combustion products of steel wool', and 'The combustion products of a substance'. The results showed that the rates of elementary school pre-service teachers who had scientific concepts on combustion were very low in both Korean and American pre-service teachers' groups, although they were a little different from items. However the rates of pre-service teachers who had partial concepts and misconceptions on combustion were high in two groups. The levels of Korean elementary school pre-service teachers' concepts were a little higher than those of American elementary school pre-service teachers' concepts. The contents and activities on combustion which are in Korean and American science textbooks seem to affect building up their concepts on combustion.

• 한국세라믹학회지
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• 제35권10호
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• pp.1078-1084
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• 1998

금속 질산염과 urea를 사용하여 연소합성법에 의해 LaCrO3 분말을 제조하고, 용액의 pH를 HNO3와 NH4OH로 조절한 후, 용매의 가열방법에 따른 연소 생성물인 LaCrO3의 형상을 고찰하였다. 연소생성물의 수율은 용액의 pH에 의해 크게 좌우되었다. 용액의 pH가 0.7~4 사이에서는 90% 이상의 수율이 얻어졌으나, 5 이상 또는 0.5 이하의 pH에서는 수율이 크게 감소하였다. 한편, 연소생성물의 형상은 용액의 pH에 무관하였고 용액의 가열방법에 좌우되었다. 용액을 저항가열법으로 가열하여 연소반응시킨 경우의 분말은 미세한 일차입자들이 2차원적으로 연결된 응집체를 형성하고 있었으나, 마이크로파를 인가하여 가열한 경우에는 용액의 pH에 관계없이 미세한 LaCrO3 분말이 얻어졌다. BET 분석 결과, 마이크로파 가열에 의해 얻어진 입자의 비표면적은 25~32m2/g으로 저항가열법으로 가열한 경우의 10-14m2/g에 비해 더 큰 값을 보였다. 이러한 결과는 마이크로파에 의한 연소반응물의 균일한 가열이 연소생성물의 2차원적인 강항 응집체 형성을 억제할 수 있음을 보여 주었다.

• 한국연소학회지
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• 제3권1호
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• pp.21-29
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• 1998

Mathematical modeling of combustion characteristics in HVOF thermal spray processes was carried out on the basis of equilibrium chemistry. The main objective of this work was the development of a computation code which allows to determine chemical composition of combustion products, adiabatic flame temperature, thermodynamic and transport properties. The free energy minimization method was employed with the descent Newton-Raphson technique for numerical solution of systems of nonlinear thermochemical equations. Adiabatic flame temperature was calculated by using a Newton#s iterative method incorporating the computation module of chemical composition. The performance of this code was verified by comparing computational results with data obtained by ChemKin code and in the literature. Comparisons between the calculated and measured flame temperatures showed a deviation less than 2%. It was observed that adiabatic flame temperature augments with increase in combustion pressure; the influence was significant in the region of low pressure but becomes weaker and weaker with increase in pressure. Relationships of adiabatic flame temperature, dissociation ratio and combustion pressure were also analyzed.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 추계학술대회
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• pp.368-372
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• 2003

There arc two methods to evaluate the combustion product, that is analysis method and measurement method. Properties of the combustion products, constituents, and quanties, can be used to calculate boiler efficiency and beat losses. Using combustion evaluation methods combustion calculation were performed at certain condition and analyze the results. In this paper by comparing the results between two methods, deviation, correction and possibility of site application were confirmed

• 동굴
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• 제73호
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• pp.9-14
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• 2006

• 펄프종이기술
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• 제45권1호
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• pp.13-20
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• 2013

In this study, oil palm biomass such as empty fruit bunch (EFP) and palm kernel shell (PKS) was used as raw materials for making pellets. EFB and PKS are valuable lignocellulosic biomass that can be used for various purposes. If EFB and PKS are used as alternative raw materials for making pellets instead of wood, wood could be saved for making pulps or other value-added products. In order to explore their combustion characteristics, EFB and PKS were analyzed using thermal gravimetric analyzer (TGA) with ultimate and proximate analyses. From the TGA results, thermal decomposition of EFB and PKS occurred in the range of 280 to $400^{\circ}C$ through devolatilization and combustion of fixed carbon. After $400^{\circ}C$, their combustion were stabilized with combustion of residual lignin and char. PKS contained more fixed carbons and less ash contents than EFB, which indicated that PKS could be more active in combustion than EFB.