• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.297-298
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• 2012

제주 강정항은 2015년까지 국부와 안보를 지키는 21세기 청해진을 수행하기 위한 해군기지로서의 기능과 세계자연유산을 보유하고 있는 제주도의 관광산업을 활성화고자 15만톤급 초대형 크루즈 선박이 이용 가능한 민군복합 항만으로 건설될 예정이다. 또한 정부 시책에 발맞춰 친환경적인 설계와 공법으로 신재생에너지 기술을 접목한 미래 지향적인 친환경 민군복항으로 추진되고 있다. 본 연구에서는 제주 민군복합항의 건설 개요를 바탕으로 항만시설의 규모와 현행 추진 현황 등에 대하여 설명하고자 한다.

• Korea Petroleum Association Journal
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• s.299
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• pp.40-43
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• 2016

• JOURNAL OF ELECTRICAL WORLD
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• s.435
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• pp.34-37
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• 2013

• 월간 기계설비
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• s.272
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• pp.52-53
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• 2013

• Korea Petroleum Association Journal
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• s.266
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• pp.60-63
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• 2008

• JOURNAL OF ELECTRICAL WORLD
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• s.439
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• pp.43-46
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• 2013

• Korea Petroleum Association Journal
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• s.307
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• pp.48-49
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• 2018

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.525-526
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• 2015

친환경 에너지 발전에 대한 관심이 높아지고 고유가 상황이 길어지면서 에너지 자립섬에 대한 많은 연구와 투자가 집중되고 있다. 본 논문에서는 에너지 자립섬 실증을 위한 준비 단계로 서해안에 위치한 Y섬의 실제 데이터 정보를 분석하여 전력 계통을 구성해 보았다. 이를 위하여 신재생에너지원 중 태양광 발전, 풍력 발전, 연료 전지 및 에너지 저장 장치에 대한 특성을 고려하였으며 최근 친환경 에너지 자립섬 조성 사업을 시작한 울릉도 사업 모델을 기초로 하였다.

• Journal of Environmental Policy
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• v.10 no.1
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• pp.93-127
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• 2011

Investment on technology to obtain green energy is prevailing all over the world. The technology development project is more likely to involve multiple sub-projects, each of which is related to develop elementary technology when the project is larger and nation-wide. However, the methodologies identifying optimal combination of elementary technologies among the candidates have been very few. Hence, the purpose of this paper is to propose a novel methodology which provides an optimal combination of green energy technologies. To do so, to-be developed technologies are clustered with multiple categories. Among the technologies, based on Delphi method, the experts select a representative technology, which is indispensible to the green energy system and has the highest connectivity with other elementary technologies. Then the methodology selects an elementary technology from each technology category based on two metrics: Relatedness with representative technology and project risk. To show the feasibility of the proposed methodology, we applied the methodology to an actual windmill development project.

• Journal of the Korean Society of Industry Convergence
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• v.25 no.6_3
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• pp.1275-1284
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• 2022

This study provides an investigating the electrolyte reaction characteristics during thermal runaway of a lithium-ion battery(LIB). Dimethyl carbonate(DMC) is known as the main substance that makes up the electrolyte. The mono-molecular decomposition characteristics of DMC were derived through numerical analysis. Cobalt oxide can release oxygen under high temperature conditions. Also, DMC is converted to CH₄, H₂, CO, and CO₂. Especially, it was found that the decomposition of the DMC begins at a temperature range of 340-350℃, which dramatically increases the internal pressure of the LIB. In the by-products gases, the molar ratio of CO and CO₂ changed according to the molecular structure of DMC and temperature conditions. The correlation of the [CO]/[CO₂] ratio according to the temperature during thermal runaway was derived, and the characteristics of the reaction temperature could be estimated using the molar ratio as an indicator. In addition, the oxidation and decomposition characteristics of DMC according to the residence time for each temperature were estimated. When DMC is exposed to low temperature for a long time, both oxidation and decomposition may occur. There is possibility of not only increasing the internal pressure of the LIB, but also promoting thermal runaway. In this study, internal environment of LIB was identified and the reaction characteristics between the active materials of the cathode and electrolyte were investigated.