• 무역학회지
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• 제44권1호
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• pp.45-56
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• 2019

The purpose of this study is to investigate the relationship between foreign investment and carbon emissions in the Korean electricity sector, the causal relationship between the foreign investment invested in the electric power sector in the 16 regional regions and the carbon emissions in the region, The purpose of this study is to analyze the effects of foreign investment on these sectors and the carbon footprint of these sectors using Panel Random Effect Analysis, Panel VAR and OLS models. A panel analysis of foreign investment and regional carbon emissions showed that there was a causal relationship. Based on this analysis, OLS analysis showed that 7 out of 16 metropolitan areas were foreign investment And carbon emissions were significant. In the remaining six regions except Gwangju, there was a causal relationship between foreign investment in the local power sector and the reduction of carbon emissions. After categorizing the electric power industry by device, process, purpose and number of employees, causality also appeared in relation to foreign investment in these sectors and their carbon emissions. Through this study, the authors suggest that foreign investment can be a way to solve not only the financial burden of carbon emission problem, but also the development of national economy and industry through the inflow of capital and advanced new technology.

• 한국항만경제학회지
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• 제40권2호
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• pp.39-52
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• 2024

2014년 시작한 항만 하역장비 친환경 전환 사업이 2024년 종료됨에 따라서, 기존 미세먼지 대응을 위한 '저공해' 패러다임에 더하여 항만 차원의 2050 탄소중립 이행을 위한 본격 '배출제로' 전환이 요구되는 시점이다. 이에 본 연구는 국내 주요 4대 항만(부산, 인천, 여수광양, 울산)의 컨테이너 부두 하역장비의 미래 교체수요를 산정하고, 후속 전환사업의 시작년도로 예정된 2025년부터 매년 하역장비별 교체수요를 모두 전기화한다는 시나리오를 가정하고, 이에 따른 미래 배출저감 효과를 산정, 분석하였다. 특히, 대부분의 산업 분야에서 새로운 배출 산정 기준으로 채택되고 있는 전주기적 개념(LCA)을 적용한 배출전망과 항만 내 직접 배출만을 고려하는 기존의 배출 산정 개념을 함께 적용 제시하여 비교함으로써, 후속 사업의 추진에 보다 유효한 시사점을 제공하고자 하였다. 제시된 일정에 따라서 하역장비에 대한 교체를 진행하게 되면, 2025년에는 BAU 대비 79%, 2030년에는 97.4%까지 기존의 배출 규모를 감축할 수 있을 것으로 전망되었다. 하지만 전주기적 관점을 적용하면, 2030년까지 27.6% 저감할 수 있을 것으로 나타났다. 이 과정에서 특기할만 한 점은, 크레인 장비의 경우 이미 대부분 전기전환이 완료되었음에도 상대적으로 높은 활동도와 장비 자체의 출력값으로 인해 절대적 배출값은 여전히 높은 수준을 유지하였다. 이는 항만 하역장비의 배출제로 전환과 동시에 재생 에너지 기반의 항만 내 에너지 자립체계를 구축해야함을 시사한다. 또한 야드트랙터 및 크레인 외 이송·하역장비에 대한 전기화 또는 대안 에너지를 활용하는 배출제로 전환 역시 본격적으로 추진할 필요가 있다.

• 한국자동차공학회논문집
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• 제15권2호
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• pp.58-64
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• 2007

As the concerns regarding global worming were increased, the pressure of greenhouse gas(GHG) emission reduction on mobile source was also increased. Carbon dioxides contribute over 90% of total GHG emission and the mobile source occupies about 20% of this $CO_2$ emission. Therefore automotive exhaust is suspected to be one of the major reasons of the rapid increase in greenhouse effect gases in ambient air. In this study, in order to investigate $CO_2$ emission characteristics from gasoline passenger cars(PC), which is the most dominant vehicle type in Korea, 106 vehicles were tested on the chassis dynamometer. $CO_2$ emissions and fuel efficiency were measured. The emission characteristics by displacement, gross vehicle weight, vehicle speed and CVS-75/vehicle speed mode were discussed. Test modes were vehicle speed modes and CVS-75 mode that have been used to develop emission factors and to regulate for light-duty vehicle in Korea. It was found that $CO_2$ emissions showed higher large displacement, heavy gross vehicle weight, low vehicle speed and CVS-75 mode than small displacement, light gross vehicle weight, high vehicle speed and vehicle speed mode, respectively. From these results, correlation between $CO_2$ emission and fuel efficiency was also determined. The results of this study will contribute to domestic greenhouse gas emissions calculation and making the national policy for climate change.

• 국제지역연구
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• 제21권4호
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• pp.223-245
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• 2017

본 연구의 목적은 다변량 GARCH(DCC)모형을 이용하여 탄소시장과 주식시장간 상호 영향력을 분석하는 데 있다. 탄소시장은 유럽 배출권거래제(EU ETS)의 탄소가격을, 주식시장은 에너지 소비와 탄소 배출이 상대적으로 많은 유럽의 철강 및 시멘트부문의 주식가격을 대상으로 하였다. 또한, 상관계수 분석을 통하여 시장간 상관관계 변화를 분석하였다. 이를 통해, 새로운 상품인 탄소시장의 시장성 확대(또는 배출저감 확대) 여부를 확인해 보았다. 기존 연구와 달리, (1) 배출권거래제 시작부터 2단계가 완료된 시점인 2012년까지의 자료를 모두 활용하며 (2) 전력부문에 집중된 기존연구와 달리 두 번째로 에너지 다소비 탄소 다배출부문인 철강과 시멘트부문을 대상으로 하며 (3) 수익률의 영향뿐만 아니라 변동성의 파급효과를 추가하며 (4) 시장의 동시적 상관성을 고려하여 다변량 변동성 모형인 DCC(Dynamic Conditional Correlation) 모형을 활용하였다. 분석결과, 가격 전이효과가 미미하고, 변동성 전이효과도 금융위기라는 외부충격에 의해 2단계에서 소멸하여 양 시장간에는 약한 상관관계를 유지하는 것으로 나타났다. 탄소시장과 주식시장간 상관관계는 약간 상승하는 추이를 보이지만 뚜렷한 변화를 발견하지 못하였다. 따라서, 탄소배출권은 하나의 상품으로서 금융시장으로의 시장성 확대가 미진한 것으로, 또는 배출저감이라는 본연의 역할을 수행하지 못하고 있는 것으로 해석할 수 있겠다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.117-118
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• 2011

South Korea is a ninth greenhouse gas emission nation in the world(2007) and is certainly to perform a duty to conduct reduction role by the Kyoto Protocol in 2013. waste concrete produced in the country is 45 million tons per year and these two issues are being came to the fore as major problems of society. However, if it utilizes wet carbonation system carbon using carbon dioxide and waste concrete as raw material it can expect effect of environmental protection and resource recycling. Furthermore, it can exploit another industry production.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.1343-1347
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• 2009

In order to comply with the global energy crisis and environment problem, it is necessary to research and develop the energy utilization technology with the reduction of the primary energy usage. Although the increasing rate of energy consumption started to attenuate, the entire consumption of energy as well as $CO_2$ emission rate tends to increase steadily along with an economic growth in Korea. The energy demand in Korea increases by annual 3.7% during the period from 2000 to 2006. And it is expected that we should take a charge of the greenhouse gas reduction obligation by the Climatic Change Convention(Kyoto Protocol) during the 2nd pledge period($2013{\sim}2017$). According to the IEA report in 2005, the emission amount of carbon dioxide is the 10th place in the world, and the increasing rate is 4.7% annually. Considering the economic scale of Korea, the degradation of energy usage is inevitable when the greenhouse gas reduction obligation come into effect. Therefore, effective energy usage is a very important issue to minimize baneful influence on industrial and economic activities.

• 한국수소및신에너지학회논문집
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• 제30권2호
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• pp.111-118
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• 2019

Greenhouse gas emissions have a profound effect on global warming. Various environmental regulations have been introduced to reduce the emissions. The largest amount of greenhouse gases, including carbon dioxide, is produced in the steel industry. To decrease carbon dioxide emission, hydrogen-based iron oxide reduction, which can replace carbon-based reduction has received a great attention. Iron production generates various by-product gases, such as cokes oven gas (COG), blast furnace gas (BFG), and Linz-Donawitz gas (LDG). In particular, COG, due to its high concentrations of hydrogen and methane, can be reformed to become a major source of hydrogen for reducing iron oxide. Nevertheless, continuous COG cannot be supplied under actual operation condition of steel industry. To solve this problem, this study proposed to use two alternative COG-based fuel mixtures; one with natural gas and the other with biogas. Reforming study on two types of mixed gas were carried out to evaluate catalyst performance under a variety of operating conditions. In addition, methane conversion and product composition were investigated both theoretically and experimentally.

• 한국연소학회지
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• 제14권4호
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• pp.25-32
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• 2009

In commercial combustion systems, heavy oil is one of main hydrocarbon fuel because of its economical efficiency. Regarding heavy oil combustion, due to increasing concerns over environmental pollutants such as carbon monoxide, unburned hydrocarbon and nitrogen oxides, development of low pollutant emission methods has become an imminent issue for practical application to numerous combustion devices. Also a great amount of effort has been tried to developed effective methods for practical using of biomass. It is also an important issue to reduce carbon tax. In this paper, an experimental study has been conducted to evaluate the effect of biomass reburning on NOx formation in a heavy oil flamed combustion furnace. Experiments were performed in flames stabilized by a multi-staged burner, which was mounted at the front of the furnace. Experimental tests were conducted using air-carried rice husk powder and LNG as the reburn fuel and heavy oil as the main fuel. The paper reports data on flue gas emissions and temperature distribution in the furnace for several kinds of experimental conditions. NOx concentration in the exhaust has decreased considerably due to effect of reburning. The maximum NOx reduction rate was 62% when the rice husk was used by reburn fuel, however it was 59% when the LNG was used by reburn fuel. The result shows the positive possibility of biomass reburning system for optimal NOx reduction.

• 동력기계공학회지
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• 제17권6호
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• pp.149-155
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• 2013

Since bio-diesel oil has a merit that it satisfies both demand of substitution for fossil fuel and reduction in carbon dioxide emission, it is widely used in diesel engines by blending in gas oil in small quantity. It is needed to reduce in NOx emission in some way or others if blending ratio of bio-diesel oil is going to increase, because it is demerit that bio-diesel oil emits more NOx emission than gas oil. In this study, it was accomplished to optimize 3 factors what effect on NOx emission as blending ratio of bio-diesel oil, injection timing and common rail pressure with an introduction of a design of experiments, in order to minimize a number of tests. It was cleared that to introduce the design of experiments was very available in NOx optimization.

• 유기물자원화
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• 제20권2호
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• pp.44-52
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• 2012

본 연구에서는 고유가 시대의 대안으로 정부에서 추진하고 있는 농촌형 녹색마을에 재생에너지를 도입하는 경우 $CO_2$ 저감효과를 분석하고, 재생에너지의 보급 활성화 방안을 제시하고자 하였다. 전라북도 G시에 조성하고 있는 소규모 농촌형 녹색마을의 에너지 잠재량을 조사한 결과 태양에너지를 이용하면 연간 6.73 GWh의 전력생산이 가능하고, 바이오매스로는 연간 134.06 GWh의 전략생산이 가능한 것으로 분석되었다. 따라서 전체 전력생산량은 연간 233.19 GWh로서 대상지역에서 연간 사용하고 있는 총 에너지 소비량 705.80 GWh의 33%를 부담할 수 있는 것으로 판단되었다. 한편 이산화탄소 감축잠재량을 산정한 결과 농산부산물은 1,891 ton_$CO_2$, 축산폐기물은 43,635 ton_$CO_2$, 도시폐기물은 395 ton_$CO_2$, 임산부산물은 50,324 ton_$CO_2$로 분석되었으며, 바이오매스로 인한 효과는 연간 총 96,245 ton_$CO_2$ 으로 나타났다. 또한 태양광에너지 2,251 ton_$CO_2$, 태양열에너지 1,383.3 ton_$CO_2$로 태양에너지로 인한 효과는 3,634 ton_$CO_2$이었으며, 총 99,879 ton_$CO_2$의 배출을 감축할 수 있는 것으로 나타났다.