• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.2455-2462
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• 2008

Global warming has become one of the most important social responsibilities. After Kyoto protocol for greenhouse gas reduction by climatic change convention came into effect, developed countries are presenting various policies to reduce greenhouse gas that is produced in transport field. One of those policies is modal shift that change from road freight to sea, inland waterway and railway transportation that is eco-friendly. Because increase of road freight brings about road congestion and accident, logistics cost, air pollution and green house gases. Railways are superior to all other modes of transport in mass transportability, high speed, timeliness, safety and environmental-friendliness, but the railway industry has been pushed behind in competition. In developed country's government actively promoted relevant legislation, policies, and countermeasures known as modal shift policies to shift freight transport from road to large volume mode such as railway and ship. In this paper, we discuss the current situation in modal shift, compare it with cases in other countries EU and Japan, identify problems in Korea, and propose the following ways to enhance competitiveness of rail freight.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2013년도 춘계학술대회
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• pp.209-213
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• 2013

우리나라 육상물류체계는 날로 그 비용이 체화되고 있는 실정이며 특히 차량에 의한 온실가스배출에 따른 환경파괴, 그리고 날로 심화되고 있는 교통비용증가 등이 심각한 수준에 있다. 그간 정부가 펼쳐왔던 교통에너지절감과 이와 같은 환경오염을 고려한 친환경 그린물류정책은 더 이상 그 효과를 상실하고 있는 것처럼 보인다. 이에 본 연구에서는 육상물류체계를 해상으로 이전할 수 있는 가장 효과적인 물류이전수단인 카페리항로를 한반도를 중심으로 네트웍화 함으로써, 특히 부산과 수도권의 남북동서 물류망을 획기적으로 개선시키고 외와 같은 제반 물류비용을 절감할 수 있는 방안을 도출하고자 한다.

• 한국IT서비스학회지
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• 제11권4호
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• pp.123-134
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• 2012

Recently, The Bali Road Map was approved, as it demands that developing countries should also have the responsibility of greenhouse gas reduction from 2013. This suggests that the greenhouse gas and environment should be controlled across industry sectors. Accordingly, this study was conducted to identify the application and effects of the IT convergence technology to the smart farm and realize the low-carbon green industry in Korea. The smart farm technologies within and outside of Korea were comparatively analyzed for the low-carbon green industry policy. The study subjects were determined to propose the necessity of the study efficiently. First, the studies on the smart farm for low-carbon green industry policy were examined. Second, the suitable IT technology for the smart farm as well as the effect and the improvement plan of the IT technology-based smart farm system were examined. This study now aims to promote the low-carbon green industry policy and IT convergence technology and job creation. These will be achieved by providing the plan for linking the system simulator organization with the low-carbon green industry policy.

• 한국항공운항학회지
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• 제21권1호
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• pp.39-44
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• 2013

The amount of greenhouse gas (GHG) emissions has been increasing steadily over the last 4 years, averaging 6.8 percent a year, due to the growth of low cost carriers and the increased demand for air transportations. For the aviation GHG reduction, various fuel saving activities are implemented in many areas such as high-efficiency aircraft and bio-fuel development in the technical part and low carbon flight procedures, short cut route development in the operational approach. Among the various reduction technologies, we focused on low carbon flight procedures that are crucial to GHG reduciton and suggested a reduction effect according to target implementation rate using by fuel saving estimation data in each aircraft type.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.1181-1187
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• 2015

Sulfur hexafluoride (SF₆) gas is used widely in electric power equipment such as Gas Insulated Switchgear (GIS), Gas Insulation transmission Line (GIL), and Gas Circuit Breaker (GCB). But applications of SF₆ should be restricted because SF6 gas is one of the greenhouse effect gases. To reduce use of SF₆ gas, a study on eco-friendly alternative insulation medium is needed. In this paper, we investigated lightning impulse (LI) breakdown of dry-air which is attracting attention as an ecofriendly alternative gas and the LI breakdown of hybrid insulation combined with dry-air and solid insulation (Room-Temperature Vulcanizing Silicone Rubber-RTV SIR) and dry-air in inhomogeneous fields according to gap distance and pressure. The experiment results showed that the LI breakdown strength of hybrid insulation system was higher than that of dry-air insulation system. It was verified that the development of technology related to eco-friendly power apparatus compact such GIS, GCB and GIL can be used as basic research data.

• 한국대기환경학회지
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• 제29권5호
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• pp.668-681
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• 2013

The Korean government announced a national mid-term target to reduce 30% of greenhouse gas (GHG) emissions from business-as usual (BAU) level by 2020 in a voluntary and independent manner. In this study, we examined the $CO_2$ mitigation potential and conducted an economic effect analysis of green living actions in households in Korea. We also proposed some ways to implement green life to achieve the national target. If green lifestyle takes root in households nationwide, $CO_2$ emission would be reduced to 27.3% of the emission in 2007. This would save the country about 4.93 trillion won per year and each household could save about 300,000 won per year, which accounts for about 0.5% of GDP (as of 2007). Considering the five-year plan for green growth to invest 2% of GDP in green growth every year, this would not only reduce the economic burden on households, industries and the country but also increase economic growth potential by reinvesting the saved resources into green growth. Heating and lighting would be the greatest contributor to GHG mitigation of green life in the residential sector. It means we could achieve the national goal by reducing unnecessary heating and lighting and using energy-saving electric home appliances. The implementation of green living actions would reduce a significant amount of greenhouse gas emissions, ultimately relieving the burden on businesses to reduce GHG emissions. And it is one of the most cost-effective mitigation tools in order to achieve the mid-term GHG mitigation goal.

• KEPCO Journal on Electric Power and Energy
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• 제3권1호
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• pp.35-39
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• 2017

Recently, the public opinion is growing that the main cause of greenhouse gas, fine dust and nitrogen oxide, sulfuric acid emission is coal-fired power plant, and now the decommission or conversion to other clean fuel is being demanded. However, it is a huge national loss to decommission coal-fired power plant with remaining life, and also simple fuel converting to natural gas will lead to drastic rise on power generating cost. Therefore, this study aims to provide the analysis result about the reduction effect of $CO_2$, environment emission, and to influence to power plant performance and facilities when repowering with adding gas turbine is applied to domestic aged coal-fired power plant.

• 에너지공학
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• 제24권3호
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• pp.34-39
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• 2015

Recently, Air pollution is gradually increasing which are coming from the exhaust of the ICE vehicles in the world. ICE vehicle exhaust gas and $CO_2$ are widely suspected of contributing to the called greenhouse effect, fueling fears of global warming. Therefore, many countries are striving to decrease the vehicle exhaust gas and have developed a variety of policies as air pollution regulation plans. To comply with the regulations, automotive industry has developed hybrid vehicles, which have features of both ICE vehicles and electric vehicles. Hybrid car is eco-friendly and has lowered exhausting gases and improved fuel efficiency. This research has been written to show that break down cases with EGR valve in hybrid cars, steadily increasing in use, and to help with on-site maintenance.

• 한국주조공학회지
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• 제27권3호
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• pp.131-134
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• 2007

[ $SF_6$ ] gas that is used as a protective cover gas for Mg and Mg alloys during melting and casting has extremely high greenhouse effect. CaO added Mg alloys could maintain their original mechanical properties and original abilities such as fluidity and hot tearing susceptibility. The ignition temperature increased with increasing CaO addition under ambient atmosphere and nitrogen atmosphere. The minimum amount of $SF_6$ gas decreased by 0.13 wt%CaO added AZ91D Mg alloy in the sealed condition.

• 한국산학기술학회논문지
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• 제21권2호
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• pp.182-188
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• 2020

최근에 딸기, 파프리카 등 시설과채류 재배에서 수확량 증대를 위하여 탄산가스를 시비하는 추세로 변화하고 있다. 본 연구에서는 석유화학, 주정공장 등에서 부산물로 발생되는 이산화탄소를 포집하여 정제한 후 작물재배온실에 이용하는 것이 목표이다. 이 목표를 달성하기 위한 방법으로는 드라이아이스 저장 및 탄산가스 공급이 주요하게 적용되고 있다. 드라이아이스 특성은 삼중점 이하의 온도와 압력에서 CO₂는 고체나 기체가 되며 고체는 -78.5℃와 대기압에서는 액체 상태를 거치지 않고 바로 기체로 승화되며 강력한 냉각효과를 볼 수 있다. 온도에 따른 드라이아이스의 소비량은 온도가 5℃, 10℃, 15℃, 20℃일 때 각각 0.983kg/일, 2.358kg/일, 5.102kg/일, 7.035kg/일 소비가 되었고 CO2의 농도는 1,102ppm, 1,481ppm, 1,677ppm, 1,855ppm으로 나타났다. 시험온실에서의 드라이아이스 소모량은 시간당 약 0.9kg이 감소하는 것으로 나타났고 드라이아이스를 공급하기 전 9시에 온실내부의 CO₂농도는 517ppm이었으며, 공급 후 10시 1,519ppm, 11시 1,651ppm, 12시 1,690ppm으로 증가한 후 일정한 수준을 유지하였다. 향후, 본 연구결과를 기반으로 작물에 필요한 탄산가스 공급 영역을 확장하여 공급조건을 도출하여 농가소득을 높이는데 기여하고자 하였다.