• Title/Summary/Keyword: Low carbon energy

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The Effect of Low-Temperature Carbon Encapsulation on Si Nanoparticles for Lithium Rechargeable Batteries

  • Jung, Jaepyeong;Song, Kyeongse;Kang, Yong-Mook
    • Bulletin of the Korean Chemical Society
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    • v.34 no.7
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    • pp.2162-2166
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    • 2013
  • The tailored surface modification of electrode materials is crucial to realize the wanted electronic and electrochemical properties. In this regard, a dexterous carbon encapsulation technique can be one of the most essential preparation methods for the electrode materials for lithium rechargeable batteries. For this purpose, DL-malic acid ($C_4H_6O_5$) was here used as the carbon source enabling an amorphous carbon layer to be formed on the surface of Si nanoparticles at enough low temperature to maintain their own physical or chemical properties. Various structural characterizations proved that the bulk structure of Si doesn't undergo any discernible change except for the evolution of C-C bond attributed to the formed carbon layer on the surface of Si. The improved electrochemical performance of the carbon-encapsulated Si compared to Si can be attributed to the enhanced electrical conductivity by the surface carbon layer as well as its role as a buffering agent to absorb the volume expansion of Si during lithiation and delithiation.

A Case Study on the Low Carbon Green Housing Complex, U.K. - Focusing on the Design Elements of ZEDfactory - (영국의 저탄소 녹색 주거단지 사례에 관한 연구 - 영국 ZEDfactory의 설계요소를 중심으로 -)

  • Moon, Sun-Ki;Kim, Sei-Yong;Kim, Ji-Yun;Park, Geun-Chul
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2011.04a
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    • pp.127-132
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    • 2011
  • The purpose of this study was to search the cases of low carbon green housing complex specially focusing on the design elements of ZEDfactory in UK and find the suggestion for the low carbon green housing complex in Korea. For this purpose, we reviewed the design elements of low carbon green housing, which are created by ZEDfactory. We also analyzed the 4 cases of them focusing on the design elements and synthesized the elements. As a result of this study, we can draw some implications and ways to apply the low carbon green concepts for housing complex such as the thermal heating, cooling and microgeneration solution using available renewable energy.

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A study on the relationship between economic growth and carbon emission of logistics industry in Tumen River region (두만강지역 경제성장과 물류업탄소배출의 관계분석)

  • Chi, zehang;Li, Guangzhu;Li, Longzhen
    • Journal of the Korea Safety Management & Science
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    • v.18 no.4
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    • pp.39-46
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    • 2016
  • In this paper, the relationship between energy consumption in the logistics industry and economic growth of Tumen River region from 1995 to 2014 is empirically analyzed by using the EKC model theory. The results show that there is a turning point in the Kuznets curve of carbon emission in TumenRiverregion. And it has the characteristic sof "invertedU" curve, which conforms to the environmental Kuznets curve hypothesis. Meanwhile it is stil lintherisingstage. According to the analysis results, it is proposed to set up the concept of low carbon logistics, optimize the energy structure, strengthen the information construction, and establish low-carbon development mechanism and so on.

Analysis of the Low-Carbon Economy of China on the Emissions of Carbon (탄소 배출량에 대한 중국 저탄소 경제의 분석)

  • Chen, Si Jia;Ahn, Jong-Chang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.7
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    • pp.528-534
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    • 2019
  • This study analyzes the factors affecting China's carbon emissions from 1985 to 2016. In recent years, the whole industries of China are in the midst of industrialization and have several problems. Now, the low-carbon economy has become the main task of China's economic development. This study analyzes the factors affecting China 's carbon emissions by selecting relevant data onto the Chinese yearbook and using a time series model. The analysis shows that related industries continue to innovate and increase the use of green energy such as electricity, but coal is still the largest share of the energy consumed. As energy use efficiency increases and industrial R&D investment increases year by year, carbon emissions are increasing every year. In addition, there is a stereotype that industry is the biggest factor affecting carbon emissions. The research found that the impact of the industry on China's carbon emissions is declining gradually. While controlling industrial carbon emissions, keeping continue to improve technology development and focusing on carbon emissions from other industries are critical to reduce overall carbon emissions. Based on the empirical results, if we can change stereotypes starting from the nature of the data, we will quickly reach a low carbon sustainable development economy.

The Analysis of the Low Carbon Green Growth Education Contents in the Fisheries and Marine High School Textbooks (저탄소 녹색성장 교육 관련 수산·해운계 고등학교 교과서 분석)

  • Hwang, Jae-Ho;Park, Jong-Un
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.3
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    • pp.395-405
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    • 2012
  • This study was investigated 35 government-authorized and officially approved textbooks for the Fisheries and marine high school which were published by the 2007 Revised Curriculum at 2009 for analyzing the objective and content domains concerning school the low carbon green growth education. Prior to the grounds of analyzing for the objective and content domains were presented, the factors of the grounds were made based on the low carbon green growth standards for the nation. According to the analysis, the findings which were as follows; 18(51.4%) in 35 textbooks and 666(6.4%) in 10,406 pages were related the low carbon green growth education in the course of the Fisheries and marine high school education. There were 37 participation domains, 27 information and knowledge domains, 9 value and attitude domains and 6 skill domains in the objective domains. The content domains were consisted of 33 green growth, 23 climate change, 10 energy conservation, 6 low carbon and 6 international cooperation.

Low Carbonization Technology & Traceability for Sustainable Textile Materials (지속가능 섬유 소재 추적성과 저탄소화 공정)

  • Min-ki Choi;Won-jun Kim;Myoung-hee Shim
    • Fashion & Textile Research Journal
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    • v.25 no.6
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    • pp.673-689
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    • 2023
  • To realize the traceability of sustainable textile products, this study presents a low-carbon process through energy savings in the textile material manufacturing process. Traceability is becoming an important element of Life Cycle Assessment (LCA), which confirms the eco-friendliness of textile products as well as supply chain information. Textile products with complex manufacturing processes require traceability of each step of the process to calculate carbon emissions and power usage. Additionally, an understanding of the characteristics of the product planning-manufacturing-distribution process and an overall understanding of carbon emissions sources are required. Energy use in the textile material manufacturing stage produces the largest amount of carbon dioxide, and the amount of carbon emitted from processes such as dyeing, weaving and knitting can be calculated. Energy saving methods include efficiency improvement and energy recycling, and carbon dioxide emissions can be reduced through waste heat recovery, sensor-based smart systems, and replacement of old facilities. In the dyeing process, which uses a considerable amount of heat energy, LNG, steam can be saved by using "heat exchangers," "condensate management traps," and "tenter exhaust fan controllers." In weaving and knitting processes, which use a considerable amount of electrical energy, about 10- 20% of energy can be saved by using old compressors and motors.

What Drives Residents Low Carbon Transportation Commuting? Evidence from China

  • Li, Liang;Tan, Meixuen;Sun, Huaping;Sanitnuan, Nuttida
    • Asia Pacific Journal of Business Review
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    • v.6 no.1
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    • pp.21-48
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    • 2021
  • Promoting low carbon transportation adoption is important for energy saving. Some prior studies have discussed on environmental values affect low carbon transportation commuting is inconclusive. This study has constructed the environmental values, utility value, and social influence-based low-carbon transportation adoption model through the theory of the technology acceptance model and VBN model and the IS success model. Through the SEM model and stepwise regression analysis, we have found that environmental values positively affect utility value, and utility value also positively affects the behavior adoption of low carbon transportation. The utility value as mediating effect in the relationship between environmental values and low carbon transportation commuting behavior. Besides, we also have found that social influence positively impacts the behavior adoption of low carbon transportation. It better enhances the level of household residents' environmental values and utility values, and social influence for promoting the adoption of low carbon transportation. This present research provides theoretical guidance and suggestions for promoting the development of low-carbon transportation innovation.

Effect of economic growth, industrial structure, efficiency improvement, decarbonization of power sector and fuel substitution for the transition to low carbon society by 2050 (2050년 저탄소 사회로의 전환을 위한 경제성장, 산업구조, 효율개선, 전력 탈탄소화와 연료 대체의 효과)

  • Park, Nyun-Bae;Hong, Sungjun;Park, Sang Yong
    • Journal of Energy Engineering
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    • v.23 no.4
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    • pp.61-72
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    • 2014
  • This paper analyzed transition pathways toward a low carbon society in Korea to meet global $2^{\circ}C$ climate target. Lower economic growth, industrial structure change, enhance of energy demand management, decarbonization of power sector, and replacement of low carbon fuel could reduce greenhouse gas (GHG) emission from fuel combustion in 2050 by 67% against in 2011, or by 74% against in BAU (Business-As-Usual). Lower economic growth contributes to 13% of cumulative emission reduction relative to BAU, industrial structure change 9%, enhance of energy demand management 72%, decarbonization of power sector 5% and replacement of low carbon fuel 1% respectively. Final energy consumption in 2050 needs to be reduced to 50% relative to 2011, or to 41% relative to BAU. Nuclear, coal and renewable energy represent 31%, 40%, 2% respectively among electricity generation in 2011, but 38%, 2%, 32% in 2050. CCS represents 23% of total generation in 2050. Emission intensity of electricity in 2050 was decreased to 19% relative to 2011, or to 24% relative to BAU. Primary energy in 2050 was decreased to 64% compared to 2011, or to 44% compared to BAU. Final energy consumption, primary energy supply and GHG emission from fuel combustion from 1990 to 2011 increased by 176%, 197%, 146%. Radical change from historical trend is required to transit toward a low carbon society by 2050. Appropriate economic growth, structural change to non-energy intensive industries, energy technology research, development and deployment (RD&D) in terms of enhancement of energy efficiency and low carbon energy supply technologies, and fuel change to electricity and renewable energy are key instruments.

System dynamic modeling and scenario simulation on Beijing industrial carbon emissions

  • Wen, Lei;Bai, Lu;Zhang, Ernv
    • Environmental Engineering Research
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    • v.21 no.4
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    • pp.355-364
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    • 2016
  • Beijing, as a cradle of modern industry and the third largest metropolitan area in China, faces more responsibilities to adjust industrial structure and mitigate carbon emissions. The purpose of this study is aimed at predicting and comparing industrial carbon emissions of Beijing in ten scenarios under different policy focus, and then providing emission-cutting recommendations. In views of various scenarios issues, system dynamics has been applied to predict and simulate. To begin with, the model has been established following the step of causal loop diagram and stock flow diagram. This paper decomposes scenarios factors into energy structure, high energy consumption enterprises and growth rate of industrial output. The prediction and scenario simulation results shows that energy structure, carbon intensity and heavy energy consumption enterprises are key factors, and multiple factors has more significant impact on industrial carbon emissions. Hence, some recommendations about low-carbon mode of Beijing industrial carbon emission have been proposed according to simulation results.