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주거부문 에너지 효율화를 위한 주택 건설현황 및 에너지 소비현황의 분석과 활용 방안
김지영(Kim Ji-Yoeng),정창헌(Cheong Chang-Heon),김태연(Kim Tae-Yoen),이승복(Leigh Seung-Bok) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(계획계)
Statistically surveyed data is one of the most important supporting measure in policy making because it represents the status of surveyed objects. But in Korea, we do not have appropriate statistical data and analyzed one from existing data in the building sector. So, the purpose of this study is to supply the analyzed data about status of housing construction and energy consumption from Housing Survey and Energy Survey and to find the way of using this data as policy supporting feature for energy efficiency in residential building. From the results of analyzed data, aged detached houses should be the main object of energy efficient policy in the existing building field. The most efficient and inefficient heating system type in house were found, efficient one is city gas type and inefficient one is central heating system. And an improving methods from present statistical surveys to the architectural supporting data are suggested.
탑상형 공동주택의 주동배치 및 평면 계획에 따른 자연환기 성능 평가와 개선 방안
김지영(Kim Ji-Yoeng),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.3
In this study, first, the evaluation methods were defined; and using those methods, the way of arranging apartment block according to wind direction and unit planning principles were proposed to improve the natural ventilation in Tower-type apartment housing. The angle between the main wind direction and the main axis of the building was defined as 'arrangement angle' in order to analyze the natural ventilation performance depending on the wind direction. On three residential block types, analysis of eight orientations in the interval of 45 degrees were done to evaluate each amount of ventilation and airflow direction. 'Double wing type' revealed that each housing had even ventilation performance when the 'arrangement angle' was 180 degrees, and all of the air flows indicated positive direction. 'L type' showed the best performance with the 'arrangement angle' of 135 degrees, and 'Y type' showed the best performance in natural ventilation with the 'arrangement angle' of 45 and 180 degrees. The ventilation performance analysis in units with different adjacencies to outdoor and plan arrangements were done through evaluating pollutant concentration on each room by the diffusion of pollutant with the ventilation. 'Open end type' showed better ventilation performance overall compared to the 'open at right angle type' and revealed that the larger area of living space on inflow area the less concentration of pollutant. Based on the analysis three planning principles to reduce the concentration of pollutant were derived. The first, diffusion of polluted material should be prevented. The arrangement of kitchen/dining room should be near airflow outlets to prevent the diffusion of pollutant. Also, formation of wind path from bedroom to bedroom should be prevented to avoid the re-entering of pollutant from one bedroom to another. The second, airflow should be distributed in all spaces to avoid non-flow area. The third, the airflow short cuts should be avoided. When planning openings of a room, the openings should be cross-located for the airflow to cover the whole area.
정창헌(Cheong Chang-Heon),김지영(Kim Ji-Yoeng),김정수(Kim Jeong-Soo),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.3
In this study, double window system is suggested as an alternative window system and it's thermal performance was evaluated. Even though, many study show it's benefit to reduce heating loads, double window system's thermal properties are not specified clearly. We assessed the thermal properties of double window system by monitoring surface temperature, cavity temperature, air change rate and heating load. As the results of this study, it is found that double window system have some features as follow. First, ventilation rate through cavity is relatively stable. Second, internal surface temperature of double window system ventilated by cavity changes proportionally to the outdoor temperature. Third, condensation prevention and heating load reduction are expected by adopting double window system.
패시브 하우스와 건물에너지효율등급인증 건물의 특성 비교를 통한 건물에너지효율등급인증제도 개선점 분석
정창헌(Cheong Chang-Heon),김지영(Kim Ji-Yoeng),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.3
Energy consumption in residential building sector in Korea takes over 50% of the total building energy consumption. Therefore construction of energy efficient residential building is very important. Korean low energy residential buildings can achieve some financial incentives when they are certified by "building energy rating system". However there is not enough data about the real performance of the certified residential building. Consequently, in this paper, we analyzed the heating energy consumption of the certified buildings by "building energy rating system" and compared the features of the that certifying system to those of "Passive House" certification system in EU. "Passive House" is the most strongest certification system in the world, and we can find out some merits by analyzing that system. For the result, we found some absurdities in the current "building energy rating system" in Korea. The estimated heating energy consumption is not significantly lower than the consumption of conventional residential buildings. For the lack of available data about certified building's energy consumption, it is impossible to definitely conclude the most influential factors. Therefore we conclude that the most urgent task to improve "building energy rating system" is to validate the certification system by performing monitoring certified building's energy performance.
정창헌(Cheong Chang-Heon),김지영(Kim Ji-Yoeng),황석호(Hwang Suk-Ho),박병용(Park Byung-Yong),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.1
Comfort ventilation is an effective method to exhaust the excessive heat in a building. In the respect of Korean climatic feature, maximizing comfort ventilation can be a good solution for the cooling energy consumption reduction. In this paper, the ventilation performance variation in a residential unit by changing operable window property was verified. Operable window size and indoor door open is considered in the paper and the ventilation performance in some cases were verified through Esp-r simulation. As a result for a cross ventilation case, it is turn that operable window size as 5% of floor area and 10% for living room are reasonable to encourage comfort ventilation. In the cases of non-cross ventilation(with internal door was closed), comfort ventilation was very hard to perform by natural ventilation through operable windows.
이중창호 적용을 통한 공동주택 에너지 소비량 저감 성능평가
정창헌(Cheong Chang-Heon),김지영(Kim Ji-Yoeng),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.12
Energy consumption reduction is becoming a urgent issue in Korea. Especally, energy supply in Korea definitely depends on import. Energy consumption in building is the most easiest method even if it takes relatively long time to get sufficient effects. In this paper, verification of the enegy reduction performance of the double window system was performed by Esp-r simulation. As a result, by substituting a conventional window system to the double window system, heating energy reduction is about 39% and cooling energy is increased about 6.5%. Additionally adopting shading system during may to octpber at the south double windows, cooling energy was reduced by 3%. This result reflects the realistic occupancy life pattern, and enen though shading device can reduce cooling load during the entire day, partial operation of cooling facilities in residential unit caused minimized energy consumption in cooling load. It is turned out that application of double window system can reduce about 24% of total energy consumption in a residential unit, including electrical equipment and domestic heating energy consumption.
공동주택 발코니 확장에 따른 결로 방지를 위한 창호 디자인의 실험적 연구
윤대원(Yoon Dae-Won),정창헌(Cheong Chang-Heon),김지영(Kim Ji-Yoeng),유선용(Yoo Seon-Yong),김태연(Kim Tae-Yeon),이승복(Leigh Seung-Bok) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.10
According to the legalization of balcony expansions in apartment houses since January 2006, most of the apartment houses now are built with expanded balcony space. The existing balcony space was physically a buffer between the outside environment and the inside environment. In addition, it was a space that functioned to minimize the indoor environmental changes in relation to external weather changes. However, as apartment houses with extended balconies have become more common recently, the possibility of dew condensation increased due to the weakening of the insulation capacity as the space that can carry out these environmental buffer roles have disappeared. Also, the indoor thermal environment has been weakened. Thus, this paper seeks to resolve problems related to the expansion of balconies by presenting a new method that improves the insulation performance and prevents condensation in the window design that an apartment house with an extended balcony should have. also performance evaluation is executed on new window design to prevent condensation.