• Title/Summary/Keyword: energy

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Study on the Renewable Energy Technology Market; based on Photovoltaics, Fuel cell, and Wind (신재생 에너지기술 시장 평가 (태평광, 연료전지, 풍력을 중심으로))

  • Park Soo-uk;Lee Deokki;Choi Sangjin
    • 한국신재생에너지학회:학술대회논문집
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    • 2005.06a
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    • pp.577-584
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    • 2005
  • There are many activities involved in promoting renewable energy technologies. These include governments, the renewable energy manufacturing and service industries, energy supply companies, investors, researchers, non-government organizations and customers. For a sustainable renewable energy market, finding a promising industry is essential. The industry has made significant progress in recent years, considering the fact that today's renewable energy market is relatively small. This paper analyses the technology market of renewable energy, focusing on photovoltaic system, fuel cell, wind system. It appears that there has been remarkable progress in renewable energy systems. Besides, developed countries are effectively increasing the share of niche market and promoting renewable energy worldwide.

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A Comparative Study on Heating Energy Consumption of Multi-Family Apartment using EnergyPlus and eQUEST (EnergyPlus와 eQUEST를 이용한 공동주택의 난방에너지소비량 비교분석에 관한 연구)

  • Park, Doo-Yong;Yoon, Kap-Chun;Kim, Kang-So
    • Journal of the Korean Solar Energy Society
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    • v.33 no.1
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    • pp.48-56
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    • 2013
  • Energy consumption analysis of multi-family apartment is an important area of research for the design of energy-saving housing. In this study, we selected a universal type of Flat-type apartments and analyzed the heating energy consumption of variables such as U-value, G-value, infiltration rate, heating setpoint and boiler efficiency with EnergyPlus and eQUEST. With these results, we identify the characteristics of EnergyPlus and eQUEST and provided base data for the design of energy-saving housing. The results indicate that infiltration rate is the most important factors to consider. And eQUEST heating energy consumption is approximately 10% higher compared to the EnergyPlus under same condition.

Energy self-sufficiency of office buildings in four Asian cities

  • Kim, Jong-Jin
    • Advances in Energy Research
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    • v.2 no.1
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    • pp.11-20
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    • 2014
  • This paper examines the climatic and technical feasibilities of zero energy buildings in Seoul, Shanghai, Singapore and Riyadh. Annual and seasonal energy demands of office buildings of various scales in the above cities were compared. Using optimally tilted rooftop PV panels, solar energy production potentials of the buildings were estimated. Based on the estimates of onsite renewable energy production and building energy consumption, the energy self-sufficiencies of the test buildings were assessed. The economic feasibilities of the PV systems in the four locations were analyzed. Strategies for achieving zero energy buildings are suggested.

Analysis of Energy Performance & Energy Saving with Geothermal Heat Pump System Using TRNSYS Program in a Large Scale Shopping Store (TRNSYS 프로그램을 이용한 대형쇼핑매장 에너지성능해석 및 지열시스템을 도입하는 경우 에너지절약 특성분석)

  • Hong, Won-Pyo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.29 no.1
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    • pp.47-56
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    • 2015
  • Energy consumption in buildings is currently a real problem. That is why both assessment of energy performance and effective energy management including renewable energy system are essential. Thus, this paper focuses on a case study to analyze the energy performance and cooling & heating energy saving of a large scale shopping store in Daejeon city. The reference building is simulated by using TRNSYS dynamic simulation tool to examine its annual energy consumption. For annual energy analysis of building, one year energy consumption is surveyed in the field. The related study is carried out in large scale shopping store to investigate the energy consumption and energy use trend of heating, cooling, hot water, lighting, ventilation, equipments and other. The evaluation of energy performance of the geothermal heat pump system installed in a large scale shopping store is also analyzed by TRNSYS tool. From simulation results, it evaluated that the geothermal heat pump system is effective energy savings method in large scale shopping store.