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- 저자 : 윤두영(Yun, Doo-Young) (검색결과 4 건)
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건물적용 태양광 발전시설 실태 조사·분석에 관한 연구 : 제천지역을 중심으로
윤두영(Yun Doo-Young),김준희(Kim Jun-He),유동철(Yoo Dong-Cheol),이응직(Lee Eung-Jik) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.3
With the long-term use of fossil fuel, the whole world is suffering from serious abnormal changes in weather caused by global warming. For this reason, many countries are reducing greenhouse gas emissions out of obligation and the allowable emissions are assigned to each country. Korea is also putting much effort into reducing greenhouse gas emissions by 30 percent against BAU(Business As Usual) by 2020, and is pushing ahead with several projects such as 'Million Green Home' and 'Hatsal Gaduk Home' to expand the use of new renewable energy in house as part of its policy. This study was designed to come up with improvements and help to expand photovoltaic facilities, by investigating and analyzing the current state of photovoltaic facilities in the country and problems in installing them through an in-site reconnaissance and a survey in Jecheon area. As the result, it was found that residents in the area were inadequate to operate and install photovoltaic facilities, lacked awareness of them and felt burdened economically by managing and installing them, although they had a high awareness of solar energy and photovoltaic facilities are constantly increasing with governmental support. In conclusion, it is considered that as improvements, operational effects should be increased through development of techniques, factors to reduce the effects in operating them due to insufficient management and installation should be removed and awareness of residents need to be improved through long-term plans, political support and education of the government.
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평지붕 PV거치 시스템의 형태에 따른 풍압영향에 관한 기초연구
윤두영(Yun Doo-Young),이응직(Lee Eung-Jik) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.5
The new renewable energy became popular as a clean and sustainable alternative energy under the circumstances that the entire world is facing severe abnormal climate due to the use of fossil fuel, and among which, solar energy can be obtained anywhere and is not difficult to apply it into the existing buildings, which makes it possible to be widely distributed. However, as PV module is installed into a single plate system, it shows structural weaknesses which are vulnerable to wind load and give loss to design elements in external appearance. Accordingly, this study planned one-step parallel system to complement the problems occurring from a single plate system and used STAR-CCM+V.8 made by CD-Adapco, a computational fluid dynamics(CFD) simulation tool to measure wind load stability and support based on the design standards for a single plate system and one-step parallel system. Building height was limited to less than 10m and wind speed was given when increasing from 35㎧ to 50㎧ by 5㎧ on PV system installed into the flat roof. In this case, our analysis suggested that step-one parallel system was inclass7-9 according to Beaufort’s wind power classification, which did not have an impact on the fixed PV system, and the single plate system is considered to cause risks in designing wind speed in central districts because it is more than wind power class12.
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유동철(Yoo, Dong-Cheol),김준희(Kim, Jun-Hi),윤두영(Yun, Doo-Young),이응직(Lee, Eung-Jik) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.11
With rapid modernization and industrialization, many urban areas are becoming overcrowded at a rapid pace and such urban ecological problems as heat island effect are becoming serious due to the reduced green zones resulted from the indiscriminate development. To solve this problem, ecological park, constructed wetlands, and greening on the elevation, balcony, and roof of a building that have the structure and function very close to the state of nature are currently being promoted at the urban or regional level. Especially green roof will be able to not only provide the center of a city with a significant portion of green area but also help to relive heat island effect and improve micro climate by preventing concrete of a building from absorbing heat. According to a recent study, the temperature of green roof in the summer season shows a lower temperature than the outdoor temperature, but inversely the concrete surface shows a higher temperature. Accordingly, this study measured the surface temperature of buildings with green roof in Daejeon area in order to determine how the green roof system would have an impact on the distribution of surface temperature and did a comparative analysis of the distribution of the surface temperature of green roof vs non-green roof based on these theoretical considerations. As a result, it was found that the surface temperature of green roof was lower by 4∼7℃ than that of non-green roof. This is expected to contribute to the mitigation of urban heat island effects.
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