• 한국컴퓨터정보학회논문지
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• 제29권11호
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• pp.353-369
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• 2024

본 연구는 국내 조선산업이 디지털 전환을 넘어 인공지능(AI) 기반의 전환(AX) 시대를 맞이함에 따라, AI를 활용한 생산성 향상과 글로벌 경쟁력 강화 방안을 제시한다. 과거 노동 집약적인 산업이었던 조선업은 자동화와 디지털화를 거쳐 현재 AI 기반의 스마트 조선소로 진화하고 있으며, 친환경 규제와 친환경 연료의 중요성이 증가하고 있다. 특히, 암모니아, 액화수소 등와 같은 대체 연료의 도입이 시급한 상황이다. 그러나 글로벌 경쟁 심화와 기술 변화 속에서 새로운 도전에 직면하고 있다. 본 연구는 국내외 조선기업의 AI 전환 및 친환경 연료 채택 사례를 분석하고, AI 거버넌스를 구축하여 리스크를 관리하고 지속 가능한 성장을 위한 방안을 제시하였다. 특히, 백캐스팅 기법을 활용하여 친환경 규제를 준수하면서 단기, 중기, 장기 목표를 설정하고, 단계별 전략을 도출하여 국내 조선산업의 AI 전환을 위한 정책 수립 및 기업 전략 수립에 중요한 시사점과 의의가 있다.

• 한국컴퓨터정보학회논문지
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• 제29권4호
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• pp.183-189
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• 2024

지구온난화로 인한 IMO 친환경 규제 강화, 유럽 Fit for 55 법안 등을 배경으로 선박 친환경 연료 보급 인프라 구축 및 정책 분석이 어느 때보다 필요한 시점이다. 본 연구는 선박 친환경 연료공급에 관한 선행 연구 및 정책과 규제 및 산업 대응 동향, 친환경 연료 공급 인프라 현황 등을 종합적으로 분석하여 정채적 시사점을 도출하였다. 결과적으로, 친환경 규제 강화로 인해 친환경 선박보급 못지않게 친환경 연료 보급 인프라 구축이 중요하다. LNG는 현실적인 대안이지만, 장기적으로는 무탄소 연료로 전환이 필요하며 이와 관련된 공급 인프라 구축에는 장기적인 관점에서 국내 산업 여건을 고려하여 생산에 유리한 연료에 집중하여 지원하는 선택과 집중 전략이 필요하다. 따라서 정부는 친환경 연료 개발 및 보급 지원, 규제 개선 및 인센티브 제공, 민간 투자 유도, 해외협력 강화 등을 통해 인프라 구축을 적극 추진해야 한다. 본 연구는 친환경 해운산업으로의 전환을 위한 정책 방향을 설정하는데 기초자료로 활용될 수 있을 것으로 기대된다. 향후 친환경 연료 경제성 비교를 비롯하여 국내에 유리한 연료 선정에 관한 기초연구를 진행할 예정이다.

• STI Policy Review
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• 제6권1호
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• pp.54-69
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• 2015

Although there is progress in developing green sectors in North America and East Asia, the key challenge facing the expansion of economy-wide green innovation and structural change in these regions is the absence of relevant policy follow-up to the green stimulus enacted during the Great Recession. The boost to green sectors provided by such measures is waning quickly, given that much of the green stimulus focused on energy efficiency. The biggest obstacles to sustaining green growth in North America and East Asiaare major market disincentives, especially the under-pricing of fossil fuels and market failures that inhibit green innovation. A three-part strategy to overcome these obstacles would involve: first, removing fossil fuel subsidies; second, employing market-based instruments to further reduce the social costs of fossil fuel use; and third, allocating any resulting revenue to public support for green innovation and investments. Such a strategy would ensure that green growth is not about promoting niche green sectors but instigating economy-wide innovation and structural transformation in North America and East Asia.

• 한국태양광발전학회지
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• 제3권2호
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• pp.48-54
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• 2017

Nowadays Viet Nam's energy supply which is mainly produced by fossil fuels energy such as coal, gas, and oil. However, the operation of fossil fuel power plants is one of the major causes of environmental pollution and climate change as well. It has a serious impact on the survival of human beings in general. As can be seen, the manufacturing industry is strongly invested, the demand for energy is also increasing. As traditional fossil fuels are being depleted and to minimize environmental pollution, renewable energy is the solution widely used by many countries in the world. Therefore, renewable energy has a significant role in maintaining the sustainability of world economy. Renewable energy sources such as solar energy, wind energy, biomass energy, geothermal energy can supply clean and nature-sourced energy to replace fossil fuels. Encouraging development of renewables is a general trend in the world today, which is also a common goal of COP21 commitment on global GHG reduction. The objective of this study is to assess the opportunities and challenges for renewable energy development in Vietnam, particularly for solar power. This study also discusses policies to promote the development of solar energy in Vietnam. While solar power provides ecological, economic and social benefits, it is exploited very modestly in Vietnam, where there are many barriers to slow down the development of renewable energy.

• 한국산업융합학회 논문집
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• 제25권6_3호
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• pp.1199-1206
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• 2022

Fossil fuels are one of the various energy sources used by humans, and industrial development has been achieved by relying on fossil fuels for a long time in the past. In order to respond to the depletion of fossil fuels and climate change, the world is trying to build an eco-friendly energy ecosystem. Research on efficiency improvement using renewable energy and ESS in various ways for energy conversion is being promoted. In this paper, a microgrid for industrial complexes was designed, constructed, and demonstrated. It was operated in two modes: an independent mode that each plant generates and uses independently and a connected operation mode that allows energy sharing between factories. In the case of independent mode, PV and PCS were intermittently stopped and restarted according to the status change of SoC section of each site. But, in the case of the connected operation mode, stable power supply was confirmed through power transaction through the operation of the entire SoC. This paper presented and verified an algorithm to stably supply power to industrial complexes consisting of various consumers with different load characteristics.

• 한국분무공학회지
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• 제28권3호
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• pp.143-149
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• 2023

Amidst the drive towards carbon neutrality, interest in renewable synthetic e-fuels is rising rapidly. These fuels, generated through the synthesis of atmospheric carbon and green hydrogen, offer a sustainable solution, showing advantages like high energy density and compatibility with existing infrastructure. The physical properties of e-fuels can be different from those of conventional gasoline based on manufacturing methods, which requires investigations into how the physical properties of e-fuels affect the fuel injection characteristics. This study performs a comparative analysis between conventional and Fischer-Tropsch (F-T) synthetic gasoline (e-gasoline) across various fuel temperatures, including the cold start condition. The fuel properties of F-T synthetic and conventional gasoline are analyzed using a gas chromatography-mass spectrometry technique and the injection rates are measured using a Bosch-tube injection rate meter. The F-T synthetic gasoline exhibited higher density and kinematic viscosity, but lower vapor pressure compared to the conventional gasoline. Both fuels showed an increase in injection rate as the fuel temperature decreased. The F-T synthetic gasoline showed higher injection rates compared to conventional gasoline regardless of the fuel temperature.

• 오토저널
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• 제31권4호
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• pp.59-65
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• 2009

• 한국자동차공학회논문집
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• 제21권4호
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• pp.135-143
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• 2013

In this study, we suggested effective countermeasure of biodiesel oxidation problems by investigating the oxidation degradation of biodiesels derived from variable resources and the level of oxidation stability of current distributing biodiesel blended fuels (2%) in Korea, and oxidation stability change according to storage time (for 3 month) and biodiesel blending ratio (2, 5, 7, 10%). By the composition analysis results of biodiesel from various resources which are possible to distribute in Korea, the biodiesel from animal fat has poor oxidation stability and cold performance, while the biodiesel from coconut and palm kernel which are considered as future potential raw material showed good oxidation stability and cold performance. The oxidation stability level of current distributing biodiesel blended fuels in Korea was excellent with showing over 30 hours (average 68 hours) stability, but the oxidation stability of the blended fuel with animal fat biodiesel having poor oxidation property (1.22 hours) was rapidly decreased to below 32 hours by mixing only 2%. Therefore, we have to pay attention to quality control of oxidation property, because the oxidation stability problem can be caused by increasing biodiesel blending ratio and diversifying raw materials those have worse property.

• KIEAE Journal
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• 제9권5호
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• pp.39-46
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• 2009

Most Plastic Green Houses in Korea are made according the European weather condition, which lead to have very low solar energy efficiency. Moreover, the function of green houses, as well as the structure of them, has not changed for Korean weather condition. Therefore, the structure and function of them should adopt the regional weather condition in order to improve the energy efficiency. This paper investigates the current plastic green housesin Korea, and presents an alternative for improving the energy efficiency. The elements of green houses were investigated. When using a partial opaque insulation with a thermal storage body, the difference of indoor air temperature became 20C during daytime, and 5C during night, which will save massive fossil fuels.

• 한국분무공학회지
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• 제18권2호
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• pp.106-111
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• 2013

Adulterations fuel have been using in the vehicle in these days. Because gasoline, diesel prices are rising every day. so people find more cheap price fuel. Adulterations fuel caused a serious air pollution problems. Adulteration fuel were made from waste engine oil, waste paint. According to Government regulations permit to be used recycle fuel(adulteration fuel) only in industrial boiler. Unburned fuel pollutants are effected to human health. In this paper, the hazardous air pollutants characteristics in the diesel vehicles according to adulterations of vehicle fuels were carried out in the NEDC test mode in chassis dynamometer. It is revealed that the all of the regulation pollutants (THC, NOx, CO and PM) emission in the adulterations of vehicle fuels was increased also the green house gas, $CO_2$ was increased. In the hazardous air pollutants characteristics, the VOCs(Volitile Organic Compounds) BTEX(Benzene, Toluene, Ethylbenzene, Xylene) emissions in the adulterations of vehicle fuels showed higher level than these in the diesel fuels.