내, 외단열 시스템 적용시의 공동주택 기준층 전면 외벽-슬라브 접합부 및 측벽-슬라브 접합부 단열성능 비교 평가 (Insulation Performances of the Typical Floor's Front Wall-slab and Side Wall-slab Joints of Apartment Buildings with Internal and External Insulation Systems)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 / 24권 / 8호 / 277 ~ 284페이지
· 저자명 : 송승영, 구보경, 최보혜

초록

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.

영어초록

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.

참고자료

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