• 제목/요약/키워드: Electric Energy

검색결과 5,293건 처리시간 0.042초

전기차 사용 후 배터리 재사용 산업 육성을 위한 정책 제안 (Policy Suggestion for Fostering the Industry of Using End of Life EV Batteries)

  • 이희동;임옥택
    • 한국수소및신에너지학회논문집
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    • 제32권4호
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    • pp.263-270
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    • 2021
  • In this study, we proposed the necessity of reusing the battery industry after domestic use, preparing legal arrangements by step for recycling, clarifying responsible materials by processing stage, and establishing infrastructure and screening diagnostic rating system. The purpose of this study is to establish a life cycle integrated management system for electric vehicle batteries and to find suitable ways for improving the lifespan of electric vehicle batteries, reuse, and recycling in stages to avoid other environmental pollution problems due to batteries after using electric vehicles used to reduce environmental pollution due to climate change.

친환경 농촌마을계획을 위한 재생에너지 활용방안 연구 - 태양에너지 자원분석 - (A Study on Application of New & Renewable Energy for Environmental-friendly Planning of Rural Villages - Analysis of Solar Energy Resources -)

  • 남상운;김대식
    • 한국농공학회논문집
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    • 제50권3호
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    • pp.105-112
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    • 2008
  • Solar energy, which is one of renewable energy, would be the most useful resources that can be applied to making energy recycling villages without using fossil energy. This study analyzed energy potential on solar energy considering weather condition in three traditional villages and compared with energy consumption surveyed. A photovoltaic system having 3.0kWp capacity of unit module can generate 182.5%, 96.1% and 170.9% of the yearly mean consumption of electric power in Makhyun, Boojang, and Soso, respectively. A flat-plate solar collector having $2.64m^2$ area of unit module can generate warm water of $142{\ell}$/day, $89{\ell}$/day, and $173{\ell}$/day, respectively in three study villages. In Makhyun and Soso, photovoltaic power and warm water produced by solar energy were sufficient to supply required amount of electric power and warm water. However, both electric power and warm water produced by unit solar module were not sufficient in Boojang area, and so it is required to increase the module area by more than 50%. According to the results of this study, the appropriate combination of energy resources can be applied to rural green-village planning if the characteristic of energy potential for each local area is considered.

수소경제 관점의 전기에너지주택 보급기반 구축에 관한 연구 (A Study on the Infrastructure of All-electric Houses in the Viewpoint of Hydrogen Economy)

  • 황성욱;이현주;김강식;나환선;김정훈
    • 한국수소및신에너지학회논문집
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    • 제23권1호
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    • pp.100-109
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    • 2012
  • In this paper, some ideas are proposed to establish the infrastructure of all-electric houses which are able to reduce primary energy consumption and $CO_2$ emission by adopting heat pump systems and induction heating cookers excluding the use of fossil fuel energy. This electrification concept is based on the consumption of only one type of energy which means electricity as secondary energy and the conventional fossil fuel energy is just consumed to generate electricity as primary energy. All-electric house is laid on the extension of the hydrogen economy in a long-term viewpoint so that the effectiveness of this new conceptual house is estimated analyzing the reduction of $CO_2$ emission. In this analysis, the balance of electricity supply and demand is considered including the construction of new power plants by renewable energy such as nuclear, IGCC and fuel cell because decarbonization is an essential element of hydrogen technology and economy and this action is accomplished in both supply and demand side of electricity. The results are able to contribute to develop various useful hydrogen policies and strategies and some detail researches are required previously to make the best application of this new conceptual house.

배기가스 조건에 따른 코로나 방전 현상 시뮬레이션 (Simulation Study of Corona Discharge According to Flue Gas Conditions)

  • 정재우;조무현
    • 한국대기환경학회지
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    • 제17권2호
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    • pp.223-231
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    • 2001
  • In order to provide some insights into the influence of electric field, gas composition, and gas temperature on electron energy distribution and electron transport characteristics, the Boltzmann equation was solved by using cross section data for electron collisions, Critical electric fields for the corona development in dry air and flue gas are 150 and 80 Td, respectively. It was seen that the decrease of critical electric field in flue gas is mainly caused by the $H_2O$ addition through the comparison of ionization and attachment coefficients of gas components. Increase of $O_2$, $H_2O$, and $CO_2$ contents in gas affected discharge characteristics according to their reciprocal characteristics between lowering the ionization threshold and increasing the electro-negativity. As electric field increases, electrons with higher energies in the electron energy distribution also increase. The mean and characteristic electron energies also linearly increase with electric field. The variation of flue gas temperature did rarely affect on the electron energy distribution function and electron transport characteristics, because the gas temperature is several hundreds or thousands times lower than the electron temperature.

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환경변화에 따른 전기이륜차의 에너지소비효율에 관한 연구 (Study of Energy Consumption Efficiency of Electric Two-wheeled Vehicle by Change of Environment Variation)

  • 길범수;김강출
    • 한국자동차공학회논문집
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    • 제20권2호
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    • pp.56-63
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    • 2012
  • Environment has become a main issue nowadays. People began to show big interest in "futuristic means of transportation", which is an efficient method in $CO_2$ emissions reduction and decreasing use of oil. Due to the noise and emissions of two-wheel vehicle of internal combustion engine, electric two-wheeled vehicles have been supplied in downtown. The electric two-wheeled vehicles use battery as power source. The performance of lithium-ion battery changes as the ambient temperature changes. In this paper, analysis of performance variance of electric two-wheeled vehicles influenced by the temperature using the chassis dynamometer and the environmental chamber was carried out.

플라이휠 에너지 저장시스템의 회전 설계 (Rotational Design of the Superconductor Flywheel Energy Storage System)

  • 낭긍현;최효상;성태현;한영희;이정필;한상철
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 B
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    • pp.907-908
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    • 2006
  • The energy storage systems are being widely researched for the electric power. The operations running in a vacuum chamber mainly consists of a composite flywheel rotor, superconductor bearings, a motor/generator and its controller. Among composed the apparatus, the floating magnet bearing consists of the ring-type permanent magnets with epoxy resin impregnation for reinforcement and surface protection. In order to storage as much energy as possible, the flywheel is supposed to be rotated with very high speed. The magnetic field is analyzed by using the Maxwell 2D/3D for the simulations.

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안전성 확보를 위한 전기안전관리기준의 재설정에 관한 연구 (A Study on the Reconfiguration in the Regulation of Electric Safety Management for the Guarantee of Safety)

  • 정재희
    • 한국안전학회지
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    • 제24권6호
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    • pp.45-49
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    • 2009
  • This study is to prepare a reasonable basis for the improvement of the electrical safety management regulation. The standards in domestic and foreign countries for the application of new and renewable energy facilities and other devices are analyzed. Other regulations excluding the electrical safety fields and wide surveys are also carried out. Consequently, it is asked that the classification between normal and self electrical facilities should be clear and deregulation for small businesses has to be followed. This study is showed that standards investigates of receiving equipment below 600V above 75kW, eletrical safety manager employment of manufacturing industry and Mid-night electric power. And, it is showed that consignment permission and Consignment inspection periodic relaxation about wind development equipment below 1,000kW, consignment of Technical Development equipment for new and renewable energy below 250kW.

전력수급계획 및 운용해석 종합시스템 개발 (Development of the Integrated System for Power System Operational Planning an)

  • 박시우;윤용범;남재현;안양근
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 C
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    • pp.1042-1045
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    • 1998
  • The main purpose of HITES(Highly Integrate Total Energy System) is to build and develop an integrated energy system for power system operational planning and analysis which consists of load forecast, economic generation schedule, stability analysis and relational database system. The integrated energy system can be utilized to supply a stable electric power and operate KEPCO power system facilities economically. This system will be put into operation in 1999. This paper describes the main feature of the HITES, system main functions, numerical methods adopted this system, and network configuration.

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