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ISO 13790의 Monthly Calculation Method를 이용한 내단열 대비 외단열 공동주택의 열교 제거와 열용량 증가에 의한 난방 및 냉방 에너지절약 효과 분석
송승영(Song Seung-Yeong),구보경(Koo Bo-Kyoung),임재한(Lim Jae-Han) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.7
The IIS(Internal Insulation System) is typically applied in most Korean apartment buildings which are the most common type of residential buildings. Consequently, there are many cases in which the layer of insulation is disconnected by the structural components at the wall-slab and wall-wall joints in the envelope. These joints become thermal bridges where the risk of heat transfer increases. In particular, the amount of heat loss is significant at the wall-slab joints adjacent to hot water heating pipes. It is expected that the EIFS(External Insulation and Finish System) is the solution to this problem. In this study, annual heating and cooling energy demands of apartment buildings with IIS and EIFS were compared using PHPP 2007(Passive House Planning Package) program adopting the monthly calculation method of ISO 13790 as a calculation algorithm. Heat transfer through thermal bridge was modelled using the linear thermal transmittance. Heat capacity difference caused by the difference of insulation location was modelled using the effective heat capacity considering the effective thickness of materials in direct thermal contact with the internal air. As results, the EIFS could improve the linear thermal transmittances of thermal bridges by 65.1∼86.4%, compared to the IIS. Apartment building with EIFS showed 10.2% and 1.3% less annual heating and cooling energy demand, respectively.
친환경 공동주택 인증 심사항목별 득점비율 분석을 통한 개선 필요 항목 도출
송승영(Song Seung-yeong),이현화(Lee Hyun-hwa),이현우(Lee Hyun-woo) 한국태양에너지학회 2008 한국태양에너지학회 논문집 Vol.28 No.4
With an awareness of the fact that influence of building industry on the environment problems is great, many countries have been endeavoring to construct sustainable and environmentally-friendly buildings. In Korea, the GECS (Green Building Certification System) has been in force since 2002. Total 6 types cf buildings are dealt in the GECS. Especially, it is expected that the number of apartment complexes, which are the most common type of residences in Korea, applying for GECS has increased continuously. In this study, we aim to pick out the items requiring improvement for the green apartment complex. Existing 12 certified apartment complexes were selected. GBCS assessment results and actual conditions of design and construction were investigated and analyzed. Total 18 items requiring improvement were picked out in accordance with the average score-to-allotted point ratio. Relevant particulars expected to be helpful for the next design works were also presented.
한국과 영국의 주거용 건물 에너지효율등급인증제도 운영 및 평가 방식과 에너지소요량 산출방법 비교 분석
송승영(Song Seung-Yeong),구보경(Koo Bo-Kyoung),이병인(Lee Beung-In) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.5
Many countries are making nationwide efforts to reduce the energy consumption which causes greenhouse gas emissions and global warming problems. Buildings are responsible for over 24% of the energy consumption in Korea, and 68% of the total energy consumption in the building sector comes from residential use. Various systems such as Energy-efficient Building Design Standard, Green Building Certification System, etc. have been in force to reduce the energy consumption of residential buildings, and Building Energy Efficiency Rating System is one of them. Korean Building Energy Efficiency Rating System is in its early stage and leaves room for additional improvement for the effective operation and accurate assessment. In this study, the Building Energy Efficiency Rating System of Korea and the SAP2005 of the UK were compared and actual residential building's energy consumption was assessed by each system. As results, the merits and shortcomings of two systems were analyzed and a number of ways of improving Korean system were suggested.
내, 외단열 시스템 적용시의 공동주택 기준층 전면 외벽-슬라브 접합부 및 측벽-슬라브 접합부 단열성능 비교 평가
송승영(Song Seung-Yeong),구보경(Koo Bo-Kyoung),최보혜(Ch i Bo-Hye) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.8
Apartment building is the most common type of residential building in Korea and hot water pipes for heating are installed on the slab. IIS (Internal Insulation System) is typically applied to most Korean apartment buildings, so there are many cases in which the layer of insulation is disconnected by structural components at the joints of wall-slab and wall-wall in envelope. These joints become thermal bridges at which the risks of inside surface condensation and heat loss increase. Especially at the joints adjacent to hot water pipes for heating, the amount of heat loss is remarkable. It is expected that EIS (External Insulation System) is the solution to this problem. In this paper, the present conditions of EISs on the market were surveyed. Surface temperature images of apartment buildings with IIS and EIS were taken with infrared thermal imaging camera at dawn in the winter. Front wall-slab joint and side wall-slab joint of apartment building recently completed were selected as typical thermal bridges. Annual heat loss through each joint in both cases of applying IIS and EIS was evaluated by the three-dimensional transient heat transfer simulation. As results, it was found that the application of EIS to the front wall-slab joint could decrease not only the amount of insulation by 47.4% but also the annual heat loss by 4.2%. In the case of the side wall-slab joint with EIS, 29.7% decrease of annual heat loss was accomplished by no more than 4.9% increase of the amount of insulation.
선형 열관류율을 이용한 공동주택 열교 부위의 단열성능 평가
송승영(Song Seung-Yeong),구보경(Koo Bo-Kyoung),이병인(Lee Beung-In) 한국건축친환경설비학회 2009 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
Greenhouse gases and global warming problems arose as a global issue. Reducing heat loss through building envelope can save significant amount of energy used in buildings. Internal Insulation system is usually applied to the apartment in Korea. In this case, the layer of insulation is disconnected by structural components at the joints of wall-slab and wall-wall. These joints become thermal bridges at which the risk of inside surface condensation and heat loss increase. In this study, linear thermal transmittance of typical thermal bridges in apartment building envelope was evaluated in case of applying internal insulation system(existing case) and external insulation system which can be a solution for eliminating thermal bridges.
써멀 레비린스 환기시스템의 연간 에너지성능 및 경제성 분석
송승영(Song Seung-Yeong),송진희(Song Jin-Hee),임재한(Lim Jae-Han) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.4
Ventilation is essential to maintain a healthy indoor environment. However, in summer and winter, thermal conditions of outdoor air are so poor that ventilation cannot but increase energy consumption. Thus, energy-efficient ventilation system is very important to reduce energy consumption. Thermal labyrinth system is a ventilation system which intakes outdoor air through an underground concrete structure shaped like a labyrinth. By the heat exchange with ground, this system can pre-cool and pre-heat the outdoor air in summer and winter, respectively. The aim of this study is to analyze the energy performance and economical efficiency of thermal labyrinth system, applied to the E University building recently built in Seoul. As results, outdoor air cooling+dehumidification and heating+humidification peak loads were found to be reduced by 47.6% and 41.2%, respectively. Annual outdoor air conditioning energy demand was found to be reduced by 31.3% and payback period was found to be 14.2years.