• Journal of Energy Engineering
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• v.24 no.4
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• pp.146-158
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• 2015

A bottom-up approach has been conducted to estimate greenhouse gas (GHG) emission and to analyze the marginal abatement cost for the Korean horticulture energy sector. With the systematically derived activity and energy balance data, the BAUs have been estimated, along with the marginal abatement cost over the period 2010 through 2030. The result from the marginal abatement cost analysis may provide general guidelines and procedures for the establishment of GHG abatement polices.

• Journal of the Economic Geographical Society of Korea
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• v.16 no.1
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• pp.135-148
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• 2013

This paper attempts to explain the energy policy to respond to climate change that is debated in recent years. Especially by the case of Germany among developed countries, the study investigates the direction, strategy and measure of energy policy which are implemented at the national level. The Energy policy of Germany revealed through this study will provide implications for the establishment and propulsion of the energy policy trying to overcome the crisis of energy resources and reduce greenhouse gas emissions. Firstly, this study reviews Germany's supply and consumption of energy and trends of greenhouse gas emission, and secondly discusses the process of the historical development of Germany's energy policy.

• Journal of Environmental Impact Assessment
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• v.13 no.4
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• pp.187-196
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• 2004

매립지에서 배출되는 메탄가스는 이산화탄소에 이어 두 번째로 많이 배출되는 지구온난화 가스이지만 열을 흡수하는 능력에 있어서는 이산화탄소 보다 25에서 35배 정도 더 크기 때문에 지구 온난화 현상에 대한 메탄가스의 영향은 중요하다고 할 수 있다. 매립지로부터 배출되는 메탄가스는 호기성 상태의 매립지 복토층을 통과 할 때 산화될 수 있으므로 매립지 복토층은 메탄가스의 배출을 저감시키는 바이오필터의 역할을 할 수 있다. 본 연구에서는 batch 실험을 통하여 매립지 복토층에서의 메탄산화속도에 대한 토양수분과 온도의 영향을 연구하였다. 최대 산화속도는 토양수분 15%(w/w), 배양온도 $35^{\circ}C$의 환경조건에서 $1.03{\mu}mol\;CH_4g^{-1}soil\;h^{-1}$으로 나타났다. 이러한 실험결과를 이용하여 토양수분과 온도를 함수로 하는 회귀모형을 개발하였다. 또한 전국에 4 군데 지역을 선발하여 각 지역의 토양수분과 온도 데이타를 수집하고 개발된 모형을 이용하여 각 지역에 위치하고 있는 매립장에서의 월 평균 메탄산화량을 예측하였다. 예측 결과 환경조건이 양호한 지역의 매립지 복토는 메탄의 배출량을 저감시킬 수 있는 효율적인 바이오필터의 효과를 가지지만 환경조건이 불리한 지역의 매립지 복토에서는 바이오필터의 효과가 크지 않는다고 할 수 있다.

• Journal of Navigation and Port Research
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• v.36 no.5
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• pp.349-355
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• 2012

In this study, for the purpose of reduction of $CO_2$ gas emission and to increase recovery of waste heat from ships, the ORC(Organic Rankine Cycle) is investigated and offered for the conversion of temperature heat to electricity from waste heat energy from ships. Simulation is performed with waste heat from the exhaust gasse which is relatively high temperature and cooling sea water which is relatively low temperature from ships. The result shows that 1,000kW power generation is available from exhaust gas and 600kW power generation is available from sea water cooling system. Different fluid is used for simulation of the ORC system with variable temperature and flow condition and efficiency of system and output power is compared.

• Journal of the Korean Society of Marine Environment & Safety
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• v.16 no.2
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• pp.229-234
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• 2010

Recently, nations around the world are putting various efforts in many aspects to decrease greenhouse gases and international cooperation is urgently required. As part of these efforts, the shipping industry is working towords establishing "green parts" that reduce the carbon content of the greenhouse gases emitted in ports and can also decrease the operating costs. This study has tried to look for how to supply shore power instead of suppling ship's own generated power as a basic researches for reduction of carbon emissions and construction of "green parts" system. And in this paper, the training ship 'SAENURI' of Mokpo Maritime University under actual operation was selected to investigate for environmental and expense effects. The results of this study showed that $CO_2$ emissions Mere reduced 34% and operating costs Mere reduced approximately 31% in case of using the shore paper.

• Environmental and Resource Economics Review
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• v.31 no.4
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• pp.733-753
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• 2022

Korean government established the Nationally Determined Contribution (NDC) in 2015. After revising in 2019, the government updated an enhanced target at the end of last year. When the NDC is addressed, the emission targets of each sector, such as power generation, industry, and buildings, are also set. This paper analyzes the emission target of each sector by applying a claims problem or bankruptcy problem developed from cooperative game theory. The five allocation rules from a claims problem are introduced and the properties of each rule are considered axiomatically. This study applies the five rules on allocating carbon emission by sector under the NDC target and compares the results with the announced government target. For the power generation sector, the government target is set lower than the emissions allocated by the five rules. On the other hand, the government target for the industry sector is higher than the results of the five rules. In other sectors, the government's targets are similar to the results of the rule that allocates emissions in proportion to each claim.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.316.1-316.1
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• 2016

지구 온난화로 인한 기후변화 현상이 점차 가시화 되고 있는 가운데 탄산가스를 비롯한 온실가스의 배출을 저감하기 위한 연구개발 노력과 관심이 고조되고 있다. 지구 대기층이 가지는 이러한 온실효과는 산업화 경향이 두드러지면서 화석에너지의 사용 증대 등 인위적 요인들에 의해 많이 증가하게 되었다. 온실가스 중에서 산화이질소(N2O)는 이산화탄소(CO2)와 메탄(CH4) 다음으로 많이 배출되는 성분이며 지구온난화 효과는 이산화탄소 분자의 310배에 달한다. 본 연구에서는 반도체 미세 패터닝(Pattering)에 게이트 산화막의 두께가 점차 얇아짐에 따라 발생하는 문제점을 해결하고 특성을 향상시키기 위해 사용되는 질화산화막(SiON)을 증착 시, 기존 산화이질소(N2O) 대신 산화질소(NO)를 사용하여 대체 가능 여부를 평가하고자 하였다. 본 연구에서는 산화질소(NO) 사용량의 변화를 통하여 FT-IR 및 Refractive Index 측정하면서 기존 산화이질소(N2O)를 이용하여 구현된 질화산화막 막질과 결과를 비교하였고, 질화산화막 증착율 및 파티클 발생 수준을 비교하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.112-113
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• 2023

전세계적으로 기후변화 위기에 대응하기 위해 온실가스 감축을 위한 조치를 강화함에 따라 항만의 온실가스 감축 또한 중요성이 커지고 있다. 이에 세계 주요 선진항만은 항만 탄소중립을 목표로 로드맵, 계획 등을 수립하여 추진하고 있다. 반면, 우리나라는 항만 부문의 온실가스 감축을 위한 목표와 구체적인 실현 방안이 마련되어 있지 않으며, LED 조명 교체, AMP 구축 등의 파편적인 계획 추진이 이루어지고 있다. 또한 온실가스 관리를 위해서는 가장 기초적으로 에너지 사용량 등이 수집되어야 하나, 자료 수집을 위한 근거 및 체계 등이 부족하여 기초자료의 수집 단계부터 어려움이 있다. 따라서 본 연구의 목적은 항만 탄소중립의 필요성과 중요성을 강조하고 탄소중립 실현을 위한 관리체계 개선방안을 마련하는 것이다. 이를 위해 국내 탄소중립 관리체계와 해외 주요 선진항만의 탄소중립 관리체계를 면밀히 분석하여 현재 항만분야 탄소중립 관리체계의 문제점을 식별하고, 이를 개선하기 위한 방안을 제시하였다.

• Resources Recycling
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• v.30 no.3
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• pp.47-54
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• 2021

Palladium present in colloidal-type plated spent catalyst solution that is used in electroless plating process has not been recovered but discharged as wastewater so far. Recyclig of paladium in colloidal-type plated spent catalyst solution is achieved with this study. This study presents the estimation of resource consumption and GHG emissions during the recycling and disposal of palladium in the plated spent catalyst solution using life cycle assessment. The reduction of resources and GHG are also estimated. Based on the palladium amount of 1 kg during disposal, the GHG emission amount was estimated to be 9.67E+03 kgCO₂eq., and the amount of resource consumption was 3.94E+01 kgSb-eq. However, GHG emission was 1.96E+03 kgCO₂eq., and the amount of resource consumption was 1.54E+01 kgSb-eq. during recycling. Considering the major substances affecting GHG emissions and amount of resource consumption, CO₂ was found to significantly affect GHG emissions, accounting for 91.42% in disposal and 98.37% in recycling. The major substance affecting the amount of resource consumption was hard coal, which accounted for 40.63% in disposal and 60.73% in recycling. Upon recycling 1 kg palladium, 8,967.17 kgCO₂eq. of greenhouse gas emission was reduced, while the resource consumption was reduced to 10.10 kg Sb-eq. In addition, the direct palladium resource reduction rate due to palladium recycling was 50%.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.5
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• pp.503-508
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• 2012

Recently green house gas emission problem has been issued because $CO_2$ emission is known to cause global warming. Hence, introduces more stringent emission and fuel economy requirements in various countries, including Korea. In this research, $CO_2$ emission factor characteristics of in-use cars, which are the most dominant vehicle type in Korea, were studied, and 129 gasoline vehicles, 100 diesel vehicles, and 34 LPG vehicles were tested on a chassis dynamometer. In the tests, CO and $CO_2$ emissions as well as fuel reduction rates weremeasured. The tests were conducted in the CVS-75 mode, which has been considered for developing emission factors for regulating emissions from light-duty vehicles in Korea. Through experiments, correlations among displacement, fuel consumption efficiency, fuel type, mileage, driving pattern, and $CO_2$ emission were investigated.