평균법과 동적법을 이용한 공동주택 외벽체의 단열성능 노후화 분석 (Analysis of Thermal Performance Degradation of Apartment Building Exterior Walls Using Average Method and Dynamic Method)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 / 41권 / 2호 / 301 ~ 310페이지
· 저자명 : 고명진, 이예지, 최두성

초록

노후 건축물 외벽의 최적 단열 성능 개선 계획을 수립하기 위해서는 현장에서의 열관류율을 정확히 측정하는 것이 필요하다. 따라서 본 연구의 목표는 동적법 및 평균법의 차이와 열관류율의 변화 분석하는 것으로 한다. 이를 위해 완공 후 2년, 16년, 27년 된 아파트 외벽을 대상으로 열유속계법에 따라 2주간 현장 측정을 수행하였다. 연구 결과, 각 사례군 내에서 최대 및 최소 열관류율 간 차이는 평균법이 동적법보다 큰 것으로 나타났다. 또한, 건축물 완공 이후 시간 경과에 따른 단열 성능 저하를 분석하고, 회귀 분석 모델을 제안하였다.

영어초록

In order to establish the optimal insulation improvement plan for the exterior walls of old buildings, it is necessary to accurately measuretheir in-situ thermal transmittances (U-values). There are two analysis methods for estimating in-situ U-value from the data measured by theheat flow meter method: the average method and the dynamic method. According to the literature, the dynamic method requires shortermeasurement data and has higher accuracy, but the average method is mainly used for its ease of analysis. Therefore, this study aims toanalyze the difference in accuracy between the two analysis methods and the change in U-value over time. On-site measurements werecarried out for two weeks on the exterior walls of three apartment buildings, which were 2, 16, and 27 years old after completion, inaccordance with the heat flow meter method. The results of the study showed that the absolute deviation between U-values obtained by thetwo methods was very small, averaging 0.99% for the nine cases. And within each case group, the difference between the maximum andminimum U-values was slightly higher for the average method than for the dynamic method. The increase in the U-value and thedeterioration of the insulation performance over time after completion of construction were quantitatively investigated, and a regressionanalysis model was proposed that could predict these.

참고자료

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