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이언구(Rhee, Eon-Ku),채민수(Chae, Min-Su),박진철(Park, Jin-Chul) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.1
This study is related with the energy saving of factory buildings, and automotive factory building are targeted for the study. Thus, energy saving strategies of factory buildings have been derived, being focused on automotive factory building, and then the energy saving factors that can be applied to the target factory buildings, have been selected. And then the energy consumption of heating, cooling and lighting, and total energy consumption have been calculated. Through this, the optimal combination by energy, has been derived and each integrated saving model has been proposed.
유리창이 사무소 건물의 에너지소비에 미치는 영향에 관한 연구
김종연,이언구 중앙대학교 생산공학연구소 1993 생산공학연구소 논문집 Vol.2 No.2
건물에 있어서 창은 조망을 제공하고 자연채광과 환기 및 일사를 도입하는 중요한 기능을 갖고 있지만, 이와 동시에 유리의 열악한 단열성능으로 인하여 건물열손실의 가장 큰 요인이 된다. 이와같은 창의 긍정적 측면과 부정적 측면을 고려하여 건물의 적정 창 규모와 재료를 결정하는 것은 건축계획의 중요한 목표중의 하나이다. 본 연구는 인공조명을 위한 전기에너지의 사용비율이 특히 높은 사무소 건물에 있어서 자연채과의 활용 효과를 제고할 수 있는 가장 효율적인 유리창의 크기와 재료를 구체적으로 제시하고자 하는 목적으로 수행되었다. 연구의 방법으로는 가장 전형적인 사무소 건물의 설계안을 채택하여, 에너지 소비량 및 자연채광 효과를 TRAKLOAD와 MODULUX프로그램을 이용하여 컴퓨터 시뮬레이션을 실시하였다. 연구의 결과를 요약하면 우선 4면에 유리창이 설치된 사무소 건물에 있어서 에너지 효율을 높이기 위해서는 무엇보다도 유리창의 크기를 가능한 한 작게 계획하는 것이 유리한 것으로 분석되었다. 만일, 유리창의 크기가 각종 설계변수에 따라 이미 결정된 경우에는, 투명 복층 유리와 로이 유리를 사용하는 것이 효과적이고, 파스텔 유리나 반사유리를 사용할 경우 건물의 에너지 효율은 가장 낮은 것으로 판정되었다. A window performs various functions including admitting daylight and solar radiation, viewing outside, providing ventilation, etc. At the same time, however, it is also the major source of building heat loss due to its poor insulating property. In building design, both positive and negative aspects of a window should be recognized, and its sizing and material selection should be determined thereby. The study aims to propose the most energy efficient size of window and its material in office buildings where the utilization of daylight is most desirable. The computer simulation of energy performance of a typical office building was conducted using TRAKLOAD and MODLUX programs. The results of the study suggest that the size of the window in office buildings be kept as small as possible in order to be energy-efficient providing the building has window wall all around. At a given size of window, the transparent double glazing and Low-E windows are the most effective while the pastel and reflective windows are the least efficient windows in terms of energy performance.
Cool Roof 시스템의 에너지 저감 성능에 관한 연구
김옥(Kim Ok),이언구(Rhee Eon-Ku) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(계획계)
Today, energy consumed in the building of the summer, the energy required for air conditioning of the entire building is one of more than 40%. So, to reduce cooling load, to increase thermal comfort of inhabitant and to relieve heat island effect in urban areas is required for the environmental method. Therefore, in this research investigate through cool roof in environmental cooling method about effective interception of insolation. Examination of thermal properties by roof material estimated effect through thermal distribution by experiment applied cool roof. 1) Investigation of Environmental Performance of Cool Roof -to investigate theoretical principles and environmental performance of cool roof systems through literature review. -to examine the standards of cool roof in terms of physical properties. -to survey the cases of cool roof applications and their environmental effects. 2) Examination of the Thermal properties of Roof Materials. -to investigate the thermal properties of 3 surface materials(general roof, cool roof, green roof). -to examine the thermal properties of various roof materials. -to apply the data base of energy conservation.
건물의 에너지 효율에 영향을 미치는 지붕요소 민감도 분석
김옥(Kim Ok),이언구(Rhee Eon-Ku) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10
The cooling load of the top floor of a building will increase greatly due to the excessive solar radiation on the roof compared to other floors. The study selected solar reflectance, thermal emittance and insulation thickness as the thermal performance factors of the roof affecting the energy efficiency of the top floor of the building and conducted the sensitivity analysis. The result showed that the most significant thermal performance factors of the roof affecting the cooling load of the building were in the order of solar reflectance, thermal emittance, and insulation thickness. For solar reflectance and thermal emittance, the cooling load varied as the variables changed. For insulation thickness, however, the cooling load was not affected if the thickness was more than 150㎜. In addition, the result of the sensitivity analysis on the thermal performance factors of the roof affecting the heating load showed that the significant factors were in the order of insulation thickness, thermal emittance, and solar reflectance. For the heating load of the top floor of the building, it showed that the value changed depending on the thickness of insulation and its effect on the heating load decreased before if the thickness was more than 210㎜.