• 방사선산업학회지
• /
• 제18권2호
• /
• pp.109-115
• /
• 2024

As a global effort for eco-friendly, the ship building is making great efforts to develop ships using low-carbon, eco-friendly alternative fuels. Nuclear energy, one of several eco-friendly alternative energy sources, is evaluated as an effective alternative for future ships by minimizing carbon emissions and securing economic feasibility with low power generation cost. However, although appropriate regulatory requirements are necessary for commercialization of nuclear powered ships, there are currently no regulatory requirements for nuclear powered ships in Korea. In this study, accordingly, domestic and international regulatory requirements related to nuclear powered ships were reviewed, matters to be considered in terms of safety when developing domestic marine nuclear reactor regulatory requirements were derived, and a licensing regulatory system for nuclear powered ships was derived.This study is expected to be used as basic reference data when developing regulatory requirements for nuclear powered ships.

• 한국환경과학회지
• /
• 제18권8호
• /
• pp.933-940
• /
• 2009

Recently, wind power generation is an emerging industry expanding its market rapidly thanks to the increasing need to solve the scarcity of fossil fuels and the risk of potential global warming. Wind power generation has shown to be an effective response plan to global warming, showing the most price competitiveness among the renewable energy sources by its higher efficiency. Therefore wind energy has attracted considerable attention as the industrial growth drive for the next generation. Considering Korea's high dependence of overseas energy resources, the importance of wind power is growing as the most effective alternative energy source to ensure energy security as well as becoming a key strategic industry for exports. In this study, the social and economic effects of the wind power industry is discussed and the current status and the future prospects of the wind energy market is also examined.

• 한국기술혁신학회:학술대회논문집
• /
• 한국기술혁신학회 1999년도 춘계학술대회
• /
• pp.395-408
• /
• 1999

From the dependence the primary energy of about 97% on imported energy from abroad in Korea, 1997, and the pressure by international address to the Global Climate Change and environmental problem, we should do our best efforts to develop and diffuse of energy technologies. Also, the developed countries such USA, EU, Japan, and so on, are promoting and accelerating the development of energy technologies. From those point of views, we thought that Korea now in the time to provide the new and updated strategies to develop the energy technologies more actively for enhancing national capability, The Korea Institute of Energy Research(KIER), the complex research institution for energies except nuclear energy sponsored by government, prepared the mid and long term strategies and primary research projects, must be worked in and with the KIER, for the areas related to the energy conservation and efficiency increase, the energy environment, the alternative energy, and the diffusion of developed energy technologies.

• ETRI Journal
• /
• 제37권4호
• /
• pp.804-812
• /
• 2015

Energy harvesting (EH) technology in the field of wireless sensor networks (WSNs) is gaining increasing popularity through removing the burden of having to replace/recharge depleted energy sources by energy harvester devices. EH provides an alternative source of energy from the surrounding environment; therefore, by exploiting the EH process, WSNs can achieve a perpetual lifetime. In view of this, emphasis is being placed on the design of new medium access control (MAC) protocols that aim to maximize the lifetime of WSNs by using the maximum possible amount of harvested energy instead of saving any residual energy, given that the rate of energy harvested is greater than that which is consumed. Various MAC protocols with the objective of exploiting ambient energy have been proposed for energy-harvesting WSNs (EH-WSNs). In this paper, first, the fundamental properties of EH-WSN architecture are outlined. Then, several MAC protocols proposed for EH-WSNs are presented, describing their operating principles and underlying features. To give an insight into future research directions, open research issues (key ideas) with respect to design trade-offs are discussed at the end of this paper.

• 한국지열·수열에너지학회논문집
• /
• 제10권1호
• /
• pp.7-13
• /
• 2014

This study intends to analyse the economical aspect of a GSHP(Ground Source Heat Pump) system compared to the conventional system which is consisted with a boiler and a chiller. This study has simulated four systems in Incheon. It developed and analyzed for applications in a residential and an office building which was based on the hourly EPI(Energy Performance Index, $kWh/m^2yr$). Case 1 is utilizing a boiler and a chiller to meet heating and cooling demand of a house. Case 2 is utilizing the same conventional set up as Case 1 of a office. Case 3 is summation of Case 1(house) and 2(office) systems and loads. And Case 4 is utilizing a GSHP to meet the combined loads of the house and office. The method of the economic assessment has been based on IEA ECBCS Annex 54 Subtask-C SPB(Simple Payback) method. The SPB calculated the economic balanced year of the alternative system over the reference system. The SPB of the alternative systems (GSHP) with 10%, 30% and 50% initial incentive has been calculated as 9.38, 6.72 and 4.06 year respectively while the SPB without initial incentive of systems was 10.71 year.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2009년도 공동학술대회
• /
• pp.397-401
• /
• 2009

세계적인 경제위기 시기를 맞아 최근 정부는 경제위기 극복은 물론 저탄소 녹색성장을 통하여 경제의 성장동력을 찾고자 노력하고 있다. 그리고 2008년 초에 불어닥친 초고유가 사태는 해양교통시설업무를 추진함에 있어 관련 운영시설의 비효율적인 에너지 낭비 요소를 적극 발굴하고 친환경적인 대체에너지 체계를 적극 도입하는 계기가 되었다. 이에 따라 예산절감 등 정부의 '초 고유가 대응 에너지절약대책'에 부응하기 위하여 추진되었던 태양광발전시스템 확충 등의 자체 개선사례 분석을 통하여 해양교통시설의 친환경 에너지시스템 적용가능성에 관하여 논하고자 한다.

• 에너지공학
• /
• 제17권4호
• /
• pp.182-188
• /
• 2008

본 연구에서는 탄소 균형 및 1차식에 의한 공연비 산정방법을 대체연료에 적용하여 그 결과를 비교하였다. 이전의 연구에서는 Eltinge 차트의 확장, 미연탄화수소의 보상 및 다양한 방법으로부터 계산한 결과를 비교하였다. 또한 Eltinge 방법은 현재 공연비를 산정하는 방법 중 가장 일반적인 식이라는 것을 확인하였다. 그러나 최근 지구온난화 방지를 포함하여 환경 보호와 에너지보존에 대한 요구가 증가하면서 내연기관에 대체연료를 사용이 도입되기 시작하면서 이러한 대체연료들에 대한 공연비의 정확한 산정이 필요하게 되었다. 특히, 산소를 포함하는 연료에서는 Eltigne방법을 제외하고 모든 공연비 산정법들이 다시 유도되어야한다. 이 연구에서는 이미 그 정확성이 확인된 탄소균형식을 이용하여 대체연료의 공연비를 산정하기 위해 다시 유도하였고, 각 대체 연료에 실제로 적용이 가능한 1차식을 새로이 제시하였다. 평가 결과, 탄소균형식으로 계산한 공연비는 가솔린 연료와 비교하여 다소 오차가 증가하였지만, 그 정확도는 다양한 대체 연료들에 적용하기에 충분하다는 결론을 얻었다. 또한, 제시된 1차식은 $\lambda=1.2$이하에서는 그 정확도가 매우 높았다.

• 한국관개배수논문집
• /
• 제21권1호
• /
• pp.17-31
• /
• 2014

Excessive emission of greenhouse gases from fossil fuels usage has become a major cause of climate change. As an alternative to reduce the greenhouse gas emission, renewable energy has been highlighted around the world and UK government also established the Climate Change Act 2008 and policies for response the climate change. Those of them has been supporting many practical actions for reducing greenhouse gas emission and community energy projects is representative program to supporting security of energy supply and helping the country to reduce its carbon footprint. Rural Community Energy Fund (RCEF) which is one of community energy projects supports rural communities to develop renewable energy projects which provide economic and social benefits to the community. The review of UK's renewable energy policies and action plan can be useful to promote in Korea policies for becoming low-carbon society.

• 한국주거학회:학술대회논문집
• /
• 한국주거학회 2009년 춘계학술발표대회 논문집
• /
• pp.187-192
• /
• 2009

Nowadays, global warming and high oil prices were a threat to the survival of the whole human race. One of a solution to respond to these problems is to reduce energy consumption of building. By adopting energy-saving design, the dissemination of low energy building is required. Therefore, to improve energy efficiency while reducing the usage of the design method is necessary to study actively. BIM-based systems applied to buildings, scheduled to be built by reducing the amount of energy reduction technologies can be analyzed. Depending on various design and equipment to set energy savings goals, you can select an alternative. If it is possible to predict the energy efficiency from the initial stage of design and support designing low energy building, we would be able to expect improvement in the economics of housing due to the reduction of energy consumption.

• 한국해안·해양공학회논문집
• /
• 제25권6호
• /
• pp.433-438
• /
• 2013

에너지 자원의 부족이 점진적으로 증가할 것이라는 전망과 함께 재생가능한 대체 에너지에 대한 관심이 증가하고 있다. 잠재적인 재생가능에너지의 보고인 대양으로부터 에너지를 추출하는 방법을 고안하는 노력이 증가하고 있다. 본 논문은 해양 파랑, 조석, 온도차, 해류 등의 해양 신재생에너지 자원의 추출 및 변환의 연구동향을 요약 검토하였다. 각각의 에너지 추출과 변환 기술을 사례별로 논의하였다.