• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1545-1546
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• 2015

본 연구에서는 아직은 우리 주변에서 생소하지만 향후 사용 빈도가 높아질 중앙 집진식 청소기의 발생 가능한 화재원인을 연구하여 어떤 조건하에서 발화가능성이 있는지, 발화요인 제거와 화재조사시 과학적으로 명확하게 판단하여 원인불명의 화재가 발생하지 않도록 중앙 집진식 청소기의 화재 감식기법과 예방을 위한 개선방향을 제시하고자 한다.

• Transactions of the Korean Society of Mechanical Engineers
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• v.19 no.9
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• pp.2271-2282
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• 1995

Numerical simulations for the effects of secondary flow and turbulence diffusion on the particle concentration distributions have been carried out for the single stage electrostatic precipitator. The electrohydrodynamic secondary flow, particle concentration distribution and collection efficiency have been evaluated as a function of dimensionless parameters such as Re, $N_{end}$, $P_{e}$ x. The results of simulations show that for increasing secondary flow intensity the concentration distribution is drastically deformed and collection efficiency is decreased which is more than due to turbulent diffusion.n.n.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.448-453
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• 2006

Electrical resistivity is an important property for the collection efficiency in the electrostatic precipitator. In this paper, electrical resistivities of tobacco dusts, yellow sand dusts and pine pollens are measured using a high voltage conductivity cell based on JIS B 9915. The resistivities of three kinds of indoor dusts are about $1{\times}10^7\;{\Omega}{\cdot}cm^2$ in the normal range and dust collection efficiency using an electrostatic precipitator at to face velocity of 1.0 m/s shows over 99% for the three kinds of indoor dusts.

• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.6
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• pp.706-714
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• 2020

Currently, 90 % of the world's population breathes air with a fine dust content exceeding the World Health Organization's annual average exposure limit (10 ㎍/㎥). Global efforts have been devoted toward reducing secondary pollutants and ultra-fine dust through regulations on nitrogen oxides released over land and sea. Domestic efforts have also aimed at creating clean marine environments by reducing sulfur emissions, which are the primary cause of dust accumulation in ships, through developing and distributing environment-friendly ships. Among the technologies for reducing harmful emissions from diesel engines, electrostatic precipitator offer several advantages such as a low pressure loss, high dust collection efficiency, and NOx removal and maintenance. This study aims to increase the durability of a ship by improving equipment quality through failure mode effects analysis for the preventive maintenance of an electrostatic precipitator that was developed for reducing fine dust particles emitted from the 2,427 kW marine diesel engines in ships with a gross tonnage of 999 tons. With regard to risk priority, failure mode 241 (poor dust capture efficiency) was the highest, with an RPN of 180. It was necessary to determine the high-risk failure mode in the collecting electrode and manage it intensively. This was caused by clearance defects, owing to vibrations and consequent pin loosening. Given that pin loosening is mainly caused by vibrations generated in the hull or equipment, it is necessary to manage the position of pin loosening.

• Korean Chemical Engineering Research
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• v.48 no.1
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• pp.116-120
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• 2010

$CO_2$ is regarded as one of the greenhouse gases(GHG), which is the main reason of climate change. In order to achieve lower $CO_2$ emissions, several efforts have been conducted worldwide. $CO_2$ capture & storage(CCS) technology development is needed for a coal-fired combustion power plant because of huge $CO_2$emission. Oxy fuel combustion, one of the CCS technologies has been considered as a primary concern, nowadays. Oxy-fuel combustion needs flue gas recirculation(FGR) for stable operation and enrichment of $CO_2$ concentration in the flue gas. FGR adoption for oxy-fuel combustion requires development of effective desulfurization and dust removal technology. In this study, desulfurization characteristics of lime and dust removal technology have been researched in the laboratory scale coal combustor.

• Cement Symposium
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• no.19
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• pp.49-53
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• 1991

• Cement Symposium
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• s.37
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• pp.96-103
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• 2010

• KIPE Magazine
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• v.18 no.3
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• pp.44-49
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• 2013

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1994.04a
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• pp.95-102
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• 1994

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1998.04a
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• pp.213-214
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• 1998