• Title/Summary/Keyword: New Renewable Energy Technology

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Current Status and Prospects of Ukrainian Wind Energy (우크라이나 풍력발전 현황 및 전망)

  • Kim, Hyun-Goo;Park, Hi-Chun
    • New & Renewable Energy
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    • v.7 no.1
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    • pp.8-14
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    • 2011
  • As is the case in Korea, the expansion of renewable energy dissemination is an essential matter in Ukraine when considering its energy consumption and dependence on energy import. While Korea has set about promoting the new and renewable energy industry on the back of the national policy on green growth, Ukraine expects a virtuous circle of renewable energy industry with green tariffs and the attraction of foreign capital in association with carbon emission trade. Utilizing its well-developed heavy industrial sector including the shipbuilding and automobile industries, Korea expects wind turbine manufacturing to become one of its next-generation growth engines. Ukraine is also trying to enter the wind turbine system or parts manufacturing industry based on its automobile industry and advanced aerospace technology. Although the Crimean region in Ukraine seems to have excellent wind resources, and thus shows great potential as a location for wind farm development, political instability has been a major obstacle to the attraction of foreign capital, leading to delayed investment.

Analysis of Effects of Building Energy Consumption Characteristics on the Optimization Ratio for New and Renewable Energy Systems (건물에너지사용특성이 신재생에너지시스템 최적화 비율에 미치는 영향분석)

  • Lee, Yong-Ho;Hong, Jun-Ho;Kim, Yong-Kyoung;Cho, Young-Hum;Hwang, Jung-Ha
    • Journal of the Korean Solar Energy Society
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    • v.34 no.5
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    • pp.117-126
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    • 2014
  • This study developed a KRESS program designed to find the optimization ratio for new and renewable energy systems and analyze the effects of building energy consumption characteristics on the ratio. In spite of clear differences in predicted energy consumption and energy consumption by the loads among 18 facilities, the current formula for obligatory supply ratios applies a correction coefficient according to the building purposes based on energy consumption per each unit area in medical facilities and thus reflects no energy consumption characteristics according to the building purposes. The optimization ratio for new and renewable energy systems was the same for all facilities when the correction coefficients by the building purposes and new and renewable energy sources were all applied. When the correction coefficients were not applied, however, the optimization ratio varied according to building energy consumption characteristics. The findings raise a need to test the correction coefficients in order to select new and renewable energy systems that take into account energy consumption characteristics by the building purposes and loads and reflect economy, environmental performance, and technology.

Status of Korean Photovoltaic Policy and National R&D Projects (한국의 태양광 정책 및 국가 R&D 과제 현황)

  • Kim, Hee Jung;Pang, Gi Sung;Ahn, Jong Deuk;Park, Chinho
    • Current Photovoltaic Research
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    • v.1 no.1
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    • pp.1-10
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    • 2013
  • The photovoltaic (PV) industry, which occupies about 80% share of domestic new and renewable energy (NRE) sales, has played an important role in the development of the Korean NRE industry. This was made possible by the government's implementation of the 3rd Basic New and Renewable Energy Plan, which promoted strategic PV R&D, infrastructure building, and a variety of PV deployment programs. For instance, 'One Million Green Homes', 'Feed in Tariff', and 'Renewable Portfolio Standards' programs contributed greatly to the dissemination of PV systems in the country. Furthermore, these programs were supported with more than 380 billion Won over 6 year period (2007~2012). The strategic PV R&D contributed to the fast follow-up in commercial technologies. Because of the recent, sharp decline in PV prices caused by oversupply and economic crisis in European countries, both foreign and domestic PV companies are going through painful restructuring. Under these circumstances, the Korean PV industry needs to find a new strategy for making a breakthrough, and in this sense a proactive role of the Korean government is desperately needed.

Trend Review of Solar Energy Forecasting Technique (태양에너지 예보기술 동향분석)

  • Cheon, Jae ho;Lee, Jung-Tae;Kim, Hyun-Goo;Kang, Yong-Heack;Yun, Chang-Yeol;Kim, Chang Ki;Kim, Bo-Young;Kim, Jin-Young;Park, Yu Yeon;Kim, Tae Hyun;Jo, Ha Na
    • Journal of the Korean Solar Energy Society
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    • v.39 no.4
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    • pp.41-54
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    • 2019
  • The proportion of solar photovoltaic power generation has steadily increased in the power trade market. Solar energy forecast is highly important for the stable trade of volatile solar energy in the existing power trade market, and it is necessary to identify accurately any forecast error according to the forecast lead time. This paper analyzes the latest study trend in solar energy forecast overseas and presents a consistent comparative assessment by adopting a single statistical variable (nRMSE) for forecast errors according to lead time and forecast technology.

The Analysis on Power Development Options in Remote Islands and It's Implementation (도서지역 전원개발 대안분석 및 정책 개선방향)

  • Rhee Chang-Ho;Jo In-Seung
    • New & Renewable Energy
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    • v.2 no.2 s.6
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    • pp.108-117
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    • 2006
  • This paper focus on power development options for remote islands. Recently, in accordance with progress in distributed generation technologies including renewable energy sources, many options are possible as power development option for island. At first we estimate generation cost by generation technology then recommend and suggest some countermeasures and implementation for institutional improvement.

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Development Strategy of Clean Hydrogen Production by Renewable Energy-based Water Electrolysis in Korea (국내 재생에너지 연계 수전해 청정수소 생산 발전 전략: 국내외 관련 연구의 비교, 분석을 중심으로)

  • YOUNG YIEL CHOI;IN SUNG JUNG;TAE JIN KIM
    • Transactions of the Korean hydrogen and new energy society
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    • v.34 no.5
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    • pp.389-397
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    • 2023
  • This study compares domestic and foreign research on renewable energy-based water electrolysis clean hydrogen. Domestic studies from 2010 to 2023 focused on technological efficiency, energy efficiency, and system efficiency, with few analyzing infrastructure and technology trends. Overseas research initially focused on technological efficiency and stability, but has since shifted to economic and environmental impact, policy effectiveness, industry-university-research cooperation, and sustainability. To improve water electrolysis technology production, this study suggests prioritizing technology stability over efficiency, resolving government regulations and resident acceptance issues, promoting industry-university-institute cooperation for rapid commercialization of research results, and developing a strategy for sustainable development of renewable energy-based water electrolysis technology.

Index Evaluation to Define the Bioenergy as a Renewable Energy Resource (바이오에너지를 정의하는 지표들에 대한 고찰)

  • Soh, Jin-Young;Kim, Hyun-Jong;Lee, Jae-Sung;Oh, Kyeong-Seok
    • Journal of the Korean Applied Science and Technology
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    • v.30 no.3
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    • pp.480-487
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    • 2013
  • Bioenergy is classified to one of the renewable energy resources such as solar, wind, hydro and tidal energies. It should be noted that all the renewable energies contribute to the reduction of greenhouse gases emission. In some cases, energy from wastes was also categorized as a renewable energy in our country even though it has only negligible effect on the emission reduction. In this paper, we tried to identify the bioenergy in order to follow the global indices of the renewable energy. The indices evaluated here were whether a resource is renewable, biogenic, biodegradable, combustible and organic. Biogenic and combustible were selected as the indices to identify the bioenergy. It was also suggested that combustible as an index can be exchangeable to organic.

Review of Wind Energy Publications in Korea Citation Index using Latent Dirichlet Allocation (잠재디리클레할당을 이용한 한국학술지인용색인의 풍력에너지 문헌검토)

  • Kim, Hyun-Goo;Lee, Jehyun;Oh, Myeongchan
    • New & Renewable Energy
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    • v.16 no.4
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    • pp.33-40
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    • 2020
  • The research topics of more than 1,900 wind energy papers registered in the Korean Journal Citation Index (KCI) were modeled into 25 topics using latent directory allocation (LDA), and their consistency was cross-validated through principal component analysis (PCA) of the document word matrix. Key research topics in the wind energy field were identified as "offshore, wind farm," "blade, design," "generator, voltage, control," 'dynamic, load, noise," and "performance test." As a new method to determine the similarity between research topics in journals, a systematic evaluation method was proposed to analyze the correlation between topics by constructing a journal-topic matrix (JTM) and clustering them based on topic similarity between journals. By evaluating 24 journals that published more than 20 wind energy papers, it was confirmed that they were classified into meaningful clusters of mechanical engineering, electrical engineering, marine engineering, and renewable energy. It is expected that the proposed systematic method can be applied to the evaluation of the specificity of subsequent journals.

Activating needle coke to develop anode catalyst for direct methanol fuel cell

  • Park, Young Hun;Im, Ui-Su;Lee, Byung-Rok;Peck, Dong-Hyun;Kim, Sang-Kyung;Rhee, Young Woo;Jung, Doo-Hwan
    • Carbon letters
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    • v.20
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    • pp.47-52
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    • 2016
  • Physical and electrochemical qualities were analyzed after KOH activation of a direct methanol fuel cell using needle coke as anode supporter. The results of research on support loaded with platinum-ruthenium suggest that an activated KOH needle coke container has the lowest onset potential and the highest degree of catalyst activity among all commercial catalysts. Through an analysis of the CO stripping voltammetry, we found that KOH activated catalysis showed a 21% higher electrochemical active surface area (ECSA), with a value of 31.37 m2 /g, than the ECSA of deactivated catalyst (25.82 m2 /g). The latter figure was 15% higher than the value of one specific commercial catalyst (TEC86E86).

A Study on the Effects of prevention of the Urban Heat Island by Using New & Renewable Energy (신재생에너지 사용이 도시열섬방지에 미치는 영향에 대한 연구)

  • Son, Won-Tug;Choi, Young-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.12 no.3
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    • pp.157-162
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    • 2009
  • Significant air temperature increases in urban areas are known as the heat island phenomenon in a global scale. Therefore, we use numerical model in order to analyze quantitative effects by using new & renewable energy on the heat island phenomenon in urban area. The present study quantitatively analyzes the Urban Heat Island Effects, Energy-Saving Effects, and Environmental Load Decrease Effect along New and Renewable Energy Application which is 10% of the Building Energy Consumption.

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