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발코니 이중창호와 슈퍼윈도우의 열성능에 따른 공동주택에서의 건물에너지효율등급 비교연구
김치훈(Kim Chi-Hoon),안병립(Ahn Byung-Lib),장철용(Jang Cheol-Yong),홍원화(Hong Won-Hwa) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.3
Generally, the building's windows and ventilation for the purpose of mining and the vista and windows by emotional engineering design area is a growing trend. According to the flow of energy is lost from the building, will be achieved through the walls and roof and windows. Among these, the window through the loss of about 20~40% of the entire building is big enough to rate. In addition, the building regulation U-value limitation of window is 3.3W/㎡ · K in southern regions, while U-value limitation of wall is 0.35~0.58W/㎡ · K. It means that the energy loss through windows is six times more than it through wall. Therefore, the purpose of this study is to evaluate the environmental performance of the super window system by verification experiment.
장철용(Jang Cheol-Yong),김치훈(Kim Chi-Hoon),안병립(Ahn Byung-Lib),홍원화(Hong Won-Hwa) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10
Low-e glazing is classified as soft low-e glazing and hard low-e glazing. Hard low-e glazing can be temperable and its handling is comfortable because its coating film is a oxide film generated at high temperatures. But there is a fatal weakness that its insulation performance and shielding performance are lower compared to soft low-e glazing by low electrical conductivity of coating film. Soft low-e glazing is excellent because its coating film consists of Ag that is excellent electrical conductivity and it has strength that can supply various product consumers want. But soft low-e glazing has weaknesses that temperable and handling are difficult because Ag is oxidized easily. Therefore, This study analyzes thermal performance of glazing by Air Tightness and U-value measurement equipment
교류전철의 디지털 보호계전기를 위한 고장 전류 특성 분석
강대석(Dae-Seok Kang),원우식(Woo-Sik Won),안병립(Byung-Lib Ahn),이병곤(Byeong-Gon Lee) 대한전기학회 2019 전기학회논문지 Vol.68 No.12
Since opening of the high-speed railway in 2004, the rate of electrification has been increasing rapidly, and safety of the supply of AC railways has become very important. With the expansion of unmanned substations and digital substations, digital protective relays in feeding system need more attention. For accident prevention, it is necessary to develop accurate modeling and simulation technology for railway feeding devices of electric railway. And it is also important to educate and practice how to use the developed technology. The study will be usefully applied to the construction of new lines as well as existing lines.