• 한국응용과학기술학회지
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• 제29권4호
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• pp.545-551
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• 2012

고분자물질의 사용으로 인한 건축 재료의 다변화에 따라 화재 시 발생되는 연소가스 또한 다양해지고 있다. 그중 HBr은 NES 713과 BS 6853, FTP Code Part 2에서 연소 가스의 독성 평가 시 측정되는 독성가스이다. 특히 산업안전물질보건자료(MSDS)에서는 HBr가스를 흡입할 경우 화상을 일으키며 호흡부전, 두통 등을 유발시킬 수 있고 50ppm의 HBr가스에 노출된 사람은 생명과 건강에 즉시 영향을 받을 수 있는 매우 유독한 연소가스이다. 본 논문에서는 HBr 표준가스에 노출된 동물의 운동성 측정실험인 가스유해성 시험 및 HBr가스에 노출된 마우스의 생물학적 검사 결과를 비교 분석하여 HBr의 연소 독성에 관한 연구를 수행하였다.

• 대한기계학회논문집
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• 제11권1호
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• pp.177-188
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• 1987

본 논문에서는 연소기체의 열력학적 평형조성 계산을 위한 수식을 Gibbs의 자 유에너지 최소화법에 의하여 유도하고 이를 컴퓨터 프로그램화하여, Table 1의 특성을 지닌 연료에 대하여 ⅰ) 연소공기량에 따른 평형조성 및 단열불꽃온도, ⅱ) 연소온도 변화에 따른 평형조성의 변화를 계산함으로써 연소기체의 생성기구를 열력학적으로 해 석하였다.

• 한국기후변화학회지
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• 제7권4호
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• pp.477-484
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• 2016

In general, $CH_4$ concentrations generated in combustion facilities are known to be ppm units. In most cases, $CH_4$ samples are collected in Tedlar bags and transported to laboratories for analysis. Considering this fact, in the present study, an attempt was made to find out how long samples can be stored in cases where they are kept in bags and transported as a preliminary study for sampling. According to the results of the experiment using simulated gases (1 ppm, 5 ppm, 10 ppm) in Tedlar bag, $CH_4$ was safe up to 240 hr which is the full time. In the case of simulated gases are containing 4 kind gases ($N_2$, $CO_2$, $CH_4$, and $N_2O$). Field samples (samples of obtained by collecting combustion facilities' exhaust gases) are known to contain highly reactive substances (for example NOx, SOx, and VOCs) and may affect each other. In the present study, one site sample was secured from each of a bituminous coal combustion facility and an LNG combustion facility and whether the concentrations of $CH_4$ gas would change over time (24 hr, 96 hr, 144 hr, 192 hr) was checked. Since site samples could not be analyzed on the day of collection, an experiment was started 24 hr after the time point of sampling to analyze the samples. As with the results of analysis of the simulated gas (240 hr), the results of analysis using the site sample indicated that it could be stored for the full study period 192 hr. Therefore, it was judged that if 192 hr would be taken after sampling before the sample would be analyzed, the concentration value should be reliable.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2014년도 제49회 KOSCO SYMPOSIUM 초록집
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• pp.315-316
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• 2014

Combustion gases emit various radiation signals by chemical reaction and excited molecules in combustion system. Since temperature measurement of combustion system is very difficult, non-contact temperature measuring methods are being researched. In this paper, we propose optical system of simple structure and implement technique for measuring temperature partially in furnace using radiation wavelength signals of high temperature $CO_2$ gas generated during combustion.

• 한국화재소방학회논문지
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• 제27권5호
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• pp.44-56
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• 2013

한국기준 표준화된 A급 목재 및 B급 유류 화재 시험에서 룸코너시험기(RCT)를 사용하여 연소유독가스의 생성을 정량적으로 알아보고, 시험자들에게 미치는 인체유해성을 확인하였다. 그 결과 A급의 경우 유독가스가 시험자들에 직접적으로 노출되는 초기 3분 동안, 분당호흡량(RMV) 2단계에서 40% 카복시헤모글로빈(COHb)가 넘어가는 경우는 A급 9, 10단위에 해당하며, RMV 3단계에서 A급 5~10 단위까지가 모두 40% COHb을 초과함을 확인하였다. 한편 B급의 경우 유독가스가 시험자에게 직접 노출되는 초기 1분 동안은 A급에 비해 다소 안전하나 총 연소시간에는 RMV 3단계에서 B급 16~20 단위까지가 모두 20% COHb을 초과한 수치가 나옴을 확인하였다. 따라서 이 연구에서는 시험자들은 소화시험의 단위수를 고려하여 자급 호흡보조기나 그와 동일한 기능의 장치를 착용하는 규정을 제안한다.

• E2M - 전기 전자와 첨단 소재
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• 제10권8호
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• pp.830-835
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• 1997

In this study an experimental investigation has been conducted to remove NOx and SO$_2$simultaneously from a combustion flue gases were consisted of NO-SO$_2$-$CO_2$-$N_2$-O$_2$([NO]o:200ppm and [SO$_2$]o:800ppm) and the injection gases used as radical source gases were NH$_3$-Ar-air and CH$_4$-Ar-air. NOx and SO$_2$removal efficiency and the other by-products were measured by Fourier Transform Infrared(FTIR) as well as SO$_2$, NOx and NO$_2$gas detectors. and SEM images after sampling. The results showed that a significant Nucleating Particle Counter(CNPC) and SEM images after sampling. The results showed that a significant aerosol particle formation was observed during a simultaneous NOx and SO$_2$removal operation in corona radical shower systems. The diameter of aerosol particles was in the range of 0.18 to 3.6${\mu}{\textrm}{m}$ with a maximum fraction of particles at particles diameter of 1${\mu}{\textrm}{m}$. The NOx removal efficiency significantly increased with increasing applied voltage and NH$_3$molecule ratio. The SO$_2$removal efficiency was not significantly effected by applied voltage and slightly increased with increasing NH$_3$molecule ratio. It could be found that it is possible to use CH$_4$for NOx and SO$_2$removal by corona radical shower systems.

• 환경위생공학
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• 제9권2호
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• pp.88-100
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• 1994

A study on the recovery of useful components from waste tire. This study was carried out investigate the recovery of fuel oil condensed from gases formed in the pyrolysis of waste tire. Energy to require the pyrolysis of waste tire was used the heat that was produced by the combustion of the gases from the pyrolysis of waste tire itself. The results are as follows; 1. Energy to require forming the fuel oil by the pyrolysis of waste tire was used only 1/6 quantities of waste tire for forming fuel oil. 2. The formed fuel oil were light oil, Kerosene and gasoline 3. The pollutants of combustion gas of patronizable gases was lower than standard Value.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.2213-2217
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• 2008

The important factor is keeping the temperature condition in quantifying several toxic components in combustion gases. In case of not keeping the temperature as it was in combustion, the change of component and concentration of smoke gases was inevitable. To solve this problem, FT-IR spectroscopy with gas cell was applied. But, there is also a difficulty in quantitative analysis of specific toxic component because of water vapor. Thus, in this study, water vapor FT-IR spectra with different concentrations were obtained and applied them to quantitative analysis.

• 한국안전학회지
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• 제19권4호
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• pp.48-54
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• 2004

The recent Ire incident in an elementary school of Chonan city causes the media focus on the fire safety of residential container buildings. In this study, real fire tests were conducted in this kind of buildings. Combustion products including $O_2,\; CO_2,\;CO,\;NOx,\;SOx,\;HCI,\;HCN$ were measured, and blood samples of lab rats were analyzed in terms of Co-Hb, Glucose, AST(GOT), ALT(GPT), in order to investigate the hazard-reduction effects of employing gas mask protected with filter during the fire emergency of residential container buildings. According to the test results, whether or not employing the filter showed a sheer difference in the toxicity of the fire-induced gases, and then the importance of wearing a gas mask was evidently demonstrated.

• International Journal of Automotive Technology
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• 제4권3호
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• pp.125-133
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• 2003

Several models for the evaluation of Gross Heat Release from the internel combustion engine (ICE) are often used in literature. One of these is the First Law - Single Zone Model (FL-SZM), derived from the First Law of Thermodynamic. This model present a twice advantage: first it describes with accuracy the physic of the phenomenon (charge heat release during the combustion stroke and heat exchange between gas and cylinder wall); second it hat a great simplicity in the mathematical formulation. The evaluation of Heat Release with the FL-SZM is based on pressure experimental measurements inside the cylinder, and ell the assumption of several parameters as the specific heat ratio, wall temperature, polytropic exponent for the motored cycle evaluation, and many others. In this paper the influence of gases thermodynamic properties on Cross Heat Release has been esteemed. In particular the influence of an appropriate equation for k=k(T) (specific heat ratio vs. temperature) which describes the variations of gases thermodynamic properties with the mean temperature inside the cylinder has been evaluated. This equation has been calculated by new V order Logarithmic Polynomials (VoLP), fitting experimental gases properties through the least square methods.