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ALC 패널을 활용한 건축물 외장 커튼월에 대한 Mock-up Test 성능 평가 연구
김영호,이용수 한국디지털건축·인테리어학회 2013 한국디지털건축인테리어학회 논문집 Vol.13 No.4
The green building is one of biggest factors to go the goal of energy saving and environmental conservation, reduction of energy consumption, friendly energy technology, recycling of resource, and environmental pollution reduction technology. The purpose of these green buildings realized by the energy-saving technology such as the exterior materials or curtain wall system. The curtain wall system is a element that come to insulated portions of building envelope that results in heat loss. The purpose of this paper is to carried out mock-up tests for exterior wall used in autoclaved lightweight concrete panels in green building practices. Mock-up test execute a mixed process between standard test procedure and complex test procedure based on AAMA 501(American Society for Testing and Materials) and ASTM 283, ASTM 330(American Society for Testing and Materials). In results, tests meet the requirements that grant values in steps of procedures provided on ASTM and AAMA. ALC panel is suitable for a exterior wall product to be gratified thermal cycling performance and structural capacity, deflection(H/200) and lateral displacement(H/50), for curtain walls.
메탈 커튼월 패널 시스템의 열교최소화 대안별 에너지, 결로 및 시공성 평가
송진희(Song, Jin-Hee),박민주(Park, Min-Ju),임재한(Lim, Jae-Han),송승영(Song, Seung-Yeong) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.2
In order to achieve the national target for reducing the green house gas emission, energy consumption in buildings should be reduced because such consumption accounts for more than 21% of the national energy consumption in South Korea. To save energy in buildings, the most important task is to improve the energy performance of a building envelope. Therefore, the Korean government has tightened insulation design code for buildings. In the case of a metal-exterior curtain wall panel system built using steel trusses, actual insulation performance may not be satisfied the code because of additional heat loss through local thermal bridges such as fixing units, steel trusses and joints between panels. The aim of this study was to develope highly insulated metal-exterior curtain wall panel systems in order to obtain the better energy performance. After examining the locations and configurations of thermal bridges, three alternatives for removing thermal bridges were proposed and compared with two existing curtain wall panel systems in terms of their energy performance, condensation risk, construction cost, and constructability. As results, the second alternative reduces heat loss by maximum 85.7% compared with existing cases and has optimal construction cost and constructability.
생애비용 분석을 통한 메탈 커튼월 패널 시스템 열교최소화 대안의 경제성 평가
송진희(Song, Jin-Hee),오정민(Oh, Jung-Min),임재한(Lim, Jae-Han),송승영(Song, Seung-Yeong) 한국건축친환경설비학회 2015 한국건축친환경설비학회 논문집 Vol.9 No.5
To reduce building energy consumption, it is important to ensure that building envelopes have excellent thermal insulation performance. However, the actual insulation performance of building envelopes varies depending on components and construction methods. In particular, in metal-exterior curtain wall panel systems, various thermal bridges exist at the vertical and horizontal joints between metal panels and in fixing units such as brackets and screws. These thermal bridges can degrade the actual thermal insulation performance even if the insulation thickness is sufficient to meet the insulation standards. Therefore, it is necessary to evaluate the energy consumption and construction cost of highly insulated metal-exterior curtain wall panel systems without thermal bridges. In this study, the annual heat loss and gain of the existing metal-exterior curtain wall panel system and those of two alternatives for reducing thermal bridges were evaluated through a three-dimensional transient heat transfer analysis. The annual energy cost and the construction cost per unit area of a wall were determined, and the life cycle cost of the example building was analyzed. The annual energy cost and construction cost of the second alternative were less than those of the conventional system by 68.2 % and 2.5 %, respectively; the life cycle cost for 20–40 years was also less than that of the conventional system by 7.5–9.4 %.
경량기포콘크리트(ALC) 패널을 건축물 외장 커튼월에 적용을 위한 도료의 기초적 연구
이용수,라현주 한국디지털건축·인테리어학회 2012 한국디지털건축인테리어학회 논문집 Vol.12 No.3
Autoclaved Lightweight Concrete(ALC) features such as a high performance insulation , the fire resistance, the advantage of easy handing construction, and lightweight panels applied the curtain wall system. ALC materials are certified as non-toxic environmental and eco-friendly productions. But ALC external panels mixed with blast furnace slag pounder and silica fume have to be coated with a stucco compound or plaster because of resisting the ambient environment. This study is that mixing tests to evaluate a performance analysis of exterior paints to be make-up pigments(organic or inorganic) coated with panel surface. Testing compared by KS F 2476; flow test, KS F 2426; compression strength test, KS F 2762; bond strength test. In results, the case of the inorganic binder, ratio of alumina cement : anhydrite is 90:10 to 80:20 at the highest level of intensity. In the case of the organic binder, adhesive strength rating at surface of ALC, the pullout strength is below 0.5 N/mm2 but the normal concrete is over 2.0N/mm2. A contents ratio of EVA resin is more than 3% and then bond strength is effectively.
동계 실물실험을 통한 메탈 커튼월 패널 시스템 열교최소화 대안의 단열성능 평가
송진희(Song, Jin-Hee),임재한(Lim, Jae-Han),송승영(Song, Seung-Yeong) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.10
A building envelope has various thermal bridges such as construction junctions, joints for connecting building elements, and fixing units. These thermal bridges cause additional heat loss, so the overall insulation performance of the building envelope may decrease. Especially, thermal bridges in the metal-exterior curtain wall panel system significantly influence on the insulation performance according to existing researches. Therefore, thermal bridges should be reduced in order to ensure a high insulation performance. The aim of this study was to evaluate and compare the overall insulation performance of the existing metal-exterior curtain wall panel system and its alternative for reducing thermal bridges by the mock-up test in winter. Infrared thermal images were taken, and internal and external surface temperatures, temperature differences between center and thermal bridge parts, and air temperatures of cavities were measured and analyzed. As results, the heat loss through thermal bridges was significantly reduced in the alternative.