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김병선(Byungseon S. Kim) 한국태양에너지학회 1994 한국태양에너지학회 논문집 Vol.14 No.1
중공순환식(air-core) 냉방기술의 가능성은 건물설계자들에게 인식되어 왔으나 그 효과에 대해선 구체적인 자료가 많이 제공되어 있지 않았다. 이 시스템은 더운 여름날, 외벽체의 수평 열전달을 감소시킴으로써 냉방부하를 줄이는데 매우 효과적으로 쓰여질 수 있다. 본 논문은 중공순환식 냉방벽체가 실질적으로 얼마나 수평 열전달을 감소시킬 수 있는가에 관하여 기술하고 있다. 일반적인 소규모 건물의 전체 열손실량에서 외벽체로 인한 열손실량의 비중을 감안할 때, 실험적으로 측정된 이 열전달 감소현상은 기간냉방부하 및 최대냉방부하를 줄이는데 매우 효과적일 것임이 분명하다. 또한, 중공순환식 냉방벽체는 열전도를 줄일 뿐만 아니라, 외벽체의 실내측 면의 평균복사온도(MRT)를 현저히 감소시킴으로써 거주자가 더 높은 실내 온도에서도 쾌적함을 느낄 수 있게 해준다. The potential use of air-core cooling technique is frequently discussed among members of building design profession despite lack of the practical performance information based on experiments. The system can perform fairly well in reducing cooling loads during hot summer days by depriving the wall of horizontal heat flux. This paper discusses the substantiality of an air-core cooling wall system which cuts 74.1% of the average heat penetration of a south-facing wall per day. Considering a large portion of summer heat gain through the opaque envelope for an envelope load dominant building, this system will substantially reduce both total and peak cooling loads of the building. In addition to reducing the heat flow, cooler exterior wall surfaces reinforce the comfort engaged with the mean radiant temperature(MRT), allowing residents to feel comfortable at a higher indoor air temperature.
정지상태 수용액에서 가압과 냉각속도가 과냉각해소에 미치는 영향
김병선(Byungseon Kim),백종현(Jong-Hyun Peck),홍희기(Hiki Hong),강채동(Chaedong Kang) 대한설비공학회 2007 설비공학 논문집 Vol.19 No.12
In a supercooled or capsule type ice storage system, aqueous solution (or water) may have trouble with non-uniform dissolution though the system contributes to the simplicity of system and ecological improvement. The non-uniform dissolution increases the instability of the system because it may cause an ice blockage in pipe or cooling part. In order to observe the supercooled state, a cooling experiment was performed with pressurization to an ethylene glycol(EG) 3 mass% solution in stationary state. Also, the effect of the pressurization from 101 to 505 ㎪ to the dissolution of supercooled aqueous solution was measured with the dissolution time of the supercooled aqueous solution at a fixed cooling rate of brine. At results, the dis-solution of supercooled point decreased as the pressure of the aqueous solution in the vessel increased. Moreover, the dissolution point increased as the heat flux for cooling increased.
비주거 건축물의 Climate Zone별 설계요소 분석을 위한 Sensitivity Analysis Method 검토
김혜원(Kim, Hye-Won),김혜진(Kim, Hye-Jin),홍준(Hong, Jun),안유선(Ahn, Yu-Sun),김병선(Byungseon Sean Kim) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.2
According to the International Energy Agency World Energy Outlook, Energy consumption in the building is one third of the total energy consumption. It is important to reduce energy consumption in buildings to response to the UNFCCC. There are three methods for minimizing the energy consumption in the building sector. First, passive design method that selecting optimal design factors(variables) considering building and climate characteristics, and active design methods for efficient load control, and renewable energy technology. The method to reduce energy loads through passive design should be designed with a variety of climatic factors. Buildings designed without consideration of climatic characteristics can have adverse effects in terms of energy efficiency as well as economy. Therefore, in this study, we examined the sensitivity analysis methods that can be applied to the analysis of the envelope design element for minimizing the fundamental load generation in buildings as a basic study for the sensitivity analysis of passive design elements by climatic zones.
김철(Kim Chul),경서경(Kyung Seokyung),조우석(Oh Myungwon),오명원(Cho Wooseok),김병선(Kim Byungseon) 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.- No.-
South Korea having military power within the 10th in world ranking is the biggest single institution among public institutions in Korea and comprises force of over seven hundred thousand soldiers. However, outworn equipments and efficiency problem have issued. So, this study is to search the distribution state of new-renewable energy and to analyze application plan on the basis of interview with a official in charge in military. Analysis process is the first, classify surveyed military facilities into troops and the geographical factor. Second, classify a scale and type of facilities that new-renewable energy is supplied. Third, find consideration facts on the basis of interview with a official in charge. On the results of the survey, new-renewable energy applied to the military facility is photovoltaic, solar heat, wind power and geo-thermal energy. Also, divide military into the army, navy, air force and marine, visit 14 units and analyze the official's opinion. This study will deduce LCCA(Life cycle cost analysis) considered expenses for the installation and maintenance, and will be basic research that suggest an appropriate new-renewable energy model in military.