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최두성,전흥찬,조균형,Choi, Doo-Sung,Jeon, Hung-Chan,Cho, Kyun-Hyong 한국건설관리학회 2014 한국건설관리학회 논문집 Vol.15 No.5
본 연구는 건축물 중 공동주택 단지를 대상으로, 건축물에 투입되는 자재생산부터 건축물이 해체되는 전과정동안 환경에 미치는 영향을 6개의 환경영향 범주로 구분하여 정량적으로 산출하였으며, 국내의 모든 산업이 환경에 미치는 영향을 대략적으로 분석하여 비교 평가하였다. 총 27 단지에 대한 환경영향을 분석한 결과 단지를 구성하는 건물 및 시설별로는 공동주택 건물이 단지 전체 대비 약 88.2%를 차지하는 것으로 분석되었으며, 이후 지하주차장, 공통부분, 복지시설, 판매시설, 기타시설 순으로 환경에 미치는 영향이 큰 것으로 분석되었다. 이중 가장 영향이 큰 공동주택 건물만을 대상으로 분석한 경우에는 전과정 중 사용단계에서 환경에 미치는 영향이 가장 크게 나타났으며 이후 자재생산단계, 시공단계, 해체 및 폐기단계 순으로 환경에 미치는 영향이 크게 분석되었다. 또한 공동주택 건물의 전과정에 대한 환경영향 분석 결과 국내 총 산업 대비 약 11. 96%를 차지하는 것으로 분석되었다. This study on condominium complex will adopt the quantitative assessment of the influence on the environment throughout the entire life cycle of buildings. This paper applies input-out analysis in order to analyse embodied energy regarding input of materials at material production phase. Also, it calculates environment load at use and demolition and destruction Phases of buildings as analysing energy consumption. The study categorises environment load as six impact categories and undertakes environmental impact evaluation. The consequence shows that the environment load of multi-unit dwelling takes up 88.2% out of the entire environment load of condominium complex. Also, as a result of analyzing the environmental impact of the life cycle of condominium buildings, it was found that such environmental impact comprised of about 11.96% of all industries in Korea that had an environmental impact.
최두성(Doo-Sung Choi),이화남(Hwa-Nam Lee),조균형(Kyun-Hyong Cho) 한국생활환경학회 2007 한국생활환경학회지 Vol.14 No.1
This study estimates the change of sunlight environment on the present relaxation movement of floor area ratio and provides the maximum upper limit of floor area ratio per arrangement pattern of the apartment houses, as a result obtained from the above estimation. The arrangement patterns had been classified into 4 cases by carrying out case analysis; Case 1: the parallel arrangement of plates, Case_2, 3: the mixture arrangement of plates and towers, Case_4: the parallel arrangement of towers. And the total 12 analysis patterns including the detail analysis pattern, which the variable factor was the rearrangement of a floor per case, had been defined. In the arrangement of Case_1, we analyzed that the application of more than 250% of floor area ratio, which value is the maximum permitted limit of floor area ratio on the present residential area, was impossible at all analysis patterns. In the arrangement of Case_2 and Case_3, we analyzed that the application of 350% of floor area ratio was possible at only two patterns; one is the pattern of increasing the number of the floors for a tower and the other is the pattern of arranging a plate and a tower on the same floor. In the arrangement of Case_4, we analyzed that the application of up to 400% of floor area ratio was possible at all patterns analyzed, with regardless of the change of the number of the floors.
공동주택 공사내역서를 이용한 시공단계 유류소비량 및 탄소배출량 산출
최두성(Choi, Doo-Sung),전흥찬(Jeon, Hung-Chan),신동우(Shin, Dong-Woo),조균형(Cho, Kyun-Hyong) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.2
This study attempted to estimate oil consumption and carbon dioxide emissions caused by the use of construction equipment and machine at the construction operation phase in 27 apartment construction sites. To calculate oil consumption at the construction operation phase of the apartment buildings, the construction equipment & machine-used construction items were classified using the construction statements. Then, oil consumption at the construction operation phase was obtained in 27 apartment construction sites. For carbon dioxide emissions, the construction items were categorized by construction type and building based on the estimated oil consumption. In terms of carbon dioxide emissions by building, ‘welfare facilities’ were the highest with 11,508.86g-CO₂/㎡(27%). In terms of carbon dioxide emission by construction type, on the contrary, ‘building construction’ was the largest with 5,453.25g-CO₂/㎡(89.34%).
CFD를 활용한 공동주택 환기시스템 배기 오염물질의 재유입률 분석에 관한 연구
최두성(Choi Doo-Sung),홍봉재(Hong Bong-Jae) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.7
The ultimate purpose of this study is to quantitatively analyze the recirculation rate of pollutant(CO₂) exhausted from the ventilation system in apartment units according to variables such as their shapes, the exterior direction of the wind, wind velocity, etc by performance of CFD and to present the entire analytical results as the utilization of the basic materials for the ventilation design. The result of the recirculation rate of pollutant in the apartment units has found that there was difference in the recirculation rate according to the analytical conditions. But it was analyzed that the average rate of it was about 4.3% and the maximum rate of it was 45.1%. When the external conditions such as wind and velocity were considered, double-wing type in 3.3% was analyzed as the best main building type on the ventilation efficiency among the four types of the main buildings, and single-wing type in 3.8%, flat type in 4.7%, and L-shape type in 5.2% are in the order of the efficiency.
유전알고리즘 이용 경제적 평가기준에 따른 태양열급탕시스템 최적화 설계에 관한 연구
최두성(Choi Doosung),고명진(Ko Myeongjin),박광태(Park Kwang-Tae) 한국태양에너지학회 2016 한국태양에너지학회 논문집 Vol.36 No.5
To assure maximum economic benefits and the energy performance of solar water heating systems, the proper sizing of components and operating conditions need to be optimized. In recent years, a number of studies to design optimally solar water heating systems have been tried. This paper presents a design method for optimizing the various capacity-related and installation-related design variables based on life cycle cost using a genetic algorithm. The design variables considered in this study included the types and numbers of solar collector and auxiliary heaters; the types of storage tanks and heat exchangers; the solar collector slope; mass flow rates of the fluid on the hot and cold sides. The suggested method was applied for optimizing a solar water heating system for an elementary school in Seoul, South Korea. In addition, the effectiveness of the proposed optimization method was assessed by analyzing the obtained optimal solutions of six case studies, each of which was simulated with different solar fractions. It is observed that a trade-off between the equipment cost and the energy cost results in an optimal design that yields the lowest life cycle cost. Therefore, it could be helpful to apply the optimal solar water heating system by comparing the various design solutions obtained by using the optimization method instead of the engineer"s experience and intuition.
최두성(Doo-Sung Choi),문성환(Sung-Hwan Moon),조균형(Kyun-Hyong Cho) 한국생활환경학회 2008 한국생활환경학회지 Vol.15 No.4-2
The construction industry consumes lots of energy and its influence of environment is much worse than others. There were many studies before but not in building equipment field. However, the consumption of energy and the environmental load are important not only construction part but also building equipment field. We need to have the analysis which compared through the case building as well. We analyzed LCI (Life Cycle Inventory) and LCIA (Life Cycle Impact Assessment) with comparing ice thelma I storage system and direct-fired absorption chiller-heater system in the stage of manufacture and use (except construction and disposal). This study shows you the ice thermal storage system's LCI emission is 10.5% lower than direct-fired absorption chiller-heater system's and the ice thermal storage system's LCIA is 15.7% lower than direct-fired absorption chiller-heater system. It means ice thermal storage system is more environment-friendly than direct-fired absorption chiller-heater system.
단열기준에 따른 군 생활관에서의 에너지 소비량 변화 연구
최두성(Doo-Sung Choi),도진석(Jin-Seok Do),전흥찬(Hung-Chan Jeon) 한국생활환경학회 2021 한국생활환경학회지 Vol.28 No.5
Recently, the military facilities have been enlarged due to the increase in floor area through continuous improvement projects. Therefore, in this study, a standard model was selected for the military barracks, a representative military facility, and the change in energy consumption according to the change in insulation standards was analyzed. The military barracks standard model required for energy consumption calculation was selected as the recently newly constructed 4-story model with reference to military facility standards. In addition, the insulation standards required for energy consumption calculation are applied to the annual insulation standards of military barracks. As a result of the analysis, the energy consumption in Chuncheon was the highest, and the energy consumption in Busan was the lowest. It was also analyzed that the average energy consumption decreased by 11% in the central region, 10% in the southern region, and 17% in Jeju compared to the insulation standard in 1987.