• 디지털융복합연구
• /
• 제17권10호
• /
• pp.103-113
• /
• 2019

본 논문은 한국에서의 석탄산업이 신기후체제의 출범 이후에도 여전히 중요하며, 일정한 물량의 석탄 비축을 통해 에너지원의 수급을 조절할 수 있는 능력을 지닐 필요성에 대한 근거를 제시하는데 있다. 최근 신재생에너지의 비중 증가는 석탄이나 석유와 같은 화석연료의 의존도를 낮출 것으로 전망된다. 그리고 이에 따라 석탄의 사용도 감소할 것으로 전망되지만, 아직 에너지원별 수요의 면에서나 전력 공급의 면에서 석탄이 에너지원으로서의 지위가 여전히 큰 것이 확인되었다. 석탄의 최적 비축 규모는 기존 연구의 연간 수요를 기준으로 추정하였다. 이러한 점에서 지속가능한 성장을 위한 산업적 정책으로서 석탄산업의 유지와 연간 최적 비축 규모의 결정은 매우 중요한 문제이다.

• Journal of Contemporary Eastern Asia
• /
• 제20권2호
• /
• pp.259-277
• /
• 2021

This article investigates the geopolitics of the energy transition era, concentrating on China's solar photovoltaic (PV) industry. Authors have noted that the rise of renewables is changing the geopolitical landscape of world energy systems, but these new energy sources carry their own technical characteristics and geopolitical implications. Bearing this in mind, this research answers the questions: What are the structural factors that facilitate China's use of renewable energy to achieve political goals, and what are their implications? In order to analyze the data, I devise an analytical framework based on the energy statecraft literature and contrast rival explanations, particularly the "prosumer theory" and the premise of less geopolitical interdependence in a renewable-centered world. I show that asymmetric interdependence in the solar PV sector is already a reality. China's solar PV industry is a case that suffices all conditions (centrality in industrial capacity, market share, and companies' compliance, but to a lesser extent in critical materials and technological endowments) in the solar PV sector to devise effective strategies aimed at reaping benefits out of its asymmetric interdependence with the rest of the world.

• 한국시스템다이내믹스연구
• /
• 제15권2호
• /
• pp.27-50
• /
• 2014

Korea government established the energy technology development plan (2011-2020) and declared to be a leader of the green energy technologies. The plan aims for 10% market share in the green energy industry, 12% energy efficiency improvement, and 15% greenhouse gas reduction. In order to achieve these goals, the government has tried to calculate the whole scale of national energy R&D investment, annual budget and specific expenditures for new technologies by computer simulation. The simulation modules include the R&D investment model, GDP model, energy consumption and $CO_2$ emission model by System Dynamics. Based on these simulation modules, I tested various scenarios for effectiveness of energy R&D investments until 2020. The results show that Korea should increase national energy R&D investment to 2.3 billion U.S. dollars, and switch the investment from electricity and nuclear power to the renewable energy.

• Ocean Systems Engineering
• /
• 제13권1호
• /
• pp.21-41
• /
• 2023

Decarbonization and energy transition can be considered as a main concern even for the oil industry. One of the initiatives to reduce emissions under studies considers the use of renewable energy as a complimentary supply of electric energy of the production platforms. Wind energy has a higher TRL (Technology Readiness Level) than other types of energy converters and has been considered in these studies. However, other types of renewable energy have potential to be used and hybrid concepts considering wind platforms can help to push the technological development of other types of energy converters and improve their efficiency. In this article, a preliminary hydrodynamic assessment of a new concept of hybrid wind and wave energy conversion platform was performed, in order to evaluate the potential of wave power extraction. A multiple OWCs (Oscillating Water Column) WEC (Wave Energy Converter) design was adopted for the analysis and some simplifications were adopted to permit using a frequency domain approach to evaluate the mean wave power estimation for the location. Other strategies were used in the OWC design to create resonance in the sea energy range to try to maximize the potential power to be extracted, with good results.

• 신재생에너지
• /
• 제17권4호
• /
• pp.28-35
• /
• 2021

It is very important to secure hydrogen acceptability to achieve the hydrogen economy. This study empirically analyzed the factors affecting acceptance by using the results of a questionnaire administered to residents of Jeonju-Wanju Hydrogen Demonstration City. The results indicated that the safety of hydrogen infrastructure and local industry and economic growth positively affected acceptance. In particular, local industry and economic growth were more effective in improving resident acceptance. As policy factors, support for government policies and disclosure of information on projects were also positive factors. As perceptual factors, the higher interest in hydrogen and less safety concerns positively affected acceptability. Therefore, as far as hydrogen safety is concerned, it seems necessary to support local industry development to improve acceptability, disclose information related to industrial development, and introduce targeted experience programs.

• 한국전자통신학회논문지
• /
• 제16권5호
• /
• pp.851-858
• /
• 2021

재생에너지 및 분산자원의 증가로 에너지신산업에서는 전통적인 데이터뿐만 아니라 다양한 에너지 관련 데이터들이 생성되고 있다. 즉 다양한 재생에너지 설비와 발전 데이터, 계통 운영 데이터, 계량 및 요금 관련 데이터뿐만 아니라 새로운 서비스와 분석을 위해 필요한 기상 및 에너지 효율화 데이터 등이 있다. 에너지 빅데이터 처리 기술은 분산자원, 계통, AMI(: Advanced Metering Infrastructure)를 포함한 전력 생산·소비 인프라의 전반기에서 발생하는 데이터를 체계적으로 분석 ·진단할 수 있다. 이를 통해 ICT(: Information and Communications Technology)산업과 에너지 산업 간 융복합의 새로운 비즈니스 창출을 지원하는 기술이 될 수 있을 것이다. 이를 위해서 수집된 데이터의 항목별 특성 분석 및 연관관계 표본 추출과 각 특징들의 범주화 및 요소 정의 등 데이터 분석 시스템에 대한 연구가 필요하다. 또한 데이터의 손실 및 이상 상태 처리를 위한 데이터 정제 기술에 대한 연구가 이루어져야 한다. 그리고 에너지 데이터를 실시간으로 저장 및 관리할 수 있도록 Apache NIFI, Spark, HDFS(: Hadoop Distributed File System)에 대한 개발 및 구축이 필요하다. 본 연구에서는 위와 같은 다양한 전력거래를 위한 전반적인 에너지 데이터 처리 기술과 시스템를 제안하였다.

• The International Journal of Costume Culture
• /
• 제13권1호
• /
• pp.62-66
• /
• 2010

Of all the ways that energy is consumed within textile industry, few are as high energy-expending as dyeing process. The energy consumption in dyeing process amounts to 77% of total fuel consumption, 54% of total electricity use. A technical development in terms of efficient saving energy and time as well is required in the process of dyeing textiles. Recently, dyeing experts are investigating new technologies can conserve energy grafting into microwaves, radio waves, infrared lights, etc. Dyeing industry in Korea, however, the research related to energy conservation has been rarely conducted. Accordingly, this study aims to examine the possibility where especially microwaves could be applied to reduce the energy use and enhance dyeing process skill. This study performs the experiment in which microwave is employed as heating condition in dyeing and figures out as color yield being promoted, bathochromic effect would be achieved. Applying microwaves in dyeing process is expected to lower the carbon emission, energy and time wasted, ultimately exalt economic efficiency.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2003년도 ICCAS
• /
• pp.2524-2528
• /
• 2003

High-precision position system is widely used in lots of fields such as semiconductor industry, biotechnology, display and other up-to-date industry field. One of the main issues is to have a long traveling range with precision. There are a few solutions. For instance, there are inchworm methods, lever principle. In this study, we use lever principle to amplify output displacement with a new mechanical amplification structure. We designed new type 3DOF stage with PZT actuator and capacitive sensor. Non-monolithic structure is suggested to obtain the convenience of assembly and modification. Driving parts are designed as modules that generate displacement amplification of each axis. Designed motion module consists of 3 flexure hinges and a PZT actuator with double L lever structure.

• 한국수소및신에너지학회논문집
• /
• 제33권6호
• /
• pp.795-802
• /
• 2022

Korea is showing its appearance as a leading country in the hydrogen economy by establishing policies for revitalizing the hydrogen economy and enacting the 「Hydrogen Economy Promotion and Hydrogen Safety Management Act」 for the first time in the world. In addition, domestic hydrogen facilities are using hydrogen energy safely through world-class safety management compared to overseas advanced countries. However, in order to enhance the safety of the rapidly diversifying hydrogen industry and rapid technology development, such as the introduction of liquefied hydrogen, some institutional improvements are needed. In this regard, this paper intends to analyze the results of safety inspections on 13 representative facilities and prepare safety improvement plans to establish preemptive safety measures.

• 한국연소학회:학술대회논문집
• /
• 한국연소학회 2015년도 제51회 KOSCO SYMPOSIUM 초록집
• /
• pp.279-282
• /
• 2015

Energy Technology Perspectives (ETP) has provided the current status of energy system, technology developments and external events that have changed ETP scenario since 2006. The three scenarios are presented in four different fields (power generation, transport, industry, building). Energy efficiency improvement of energy system and the new system that can solve the increasing energy demand and the emissions are introduced. The activities on IEA/ECERC delegation of Korea will be also reported in this presentation.