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구체형 지열활용 환기시스템의 하계 및 추계 에너지 효율 분석
송승영,송진희,임재한 대한건축학회 2011 대한건축학회논문집 Vol. No.
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. 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 precool and preheat the outdoor air in summer and winter, respectively. The aim of this study is to analyze the energy efficiency of thermal labyrinth system, applied to the E University building recently built in Seoul, in summer and autumn (from Aug. 1 to Nov. 30). As results, it was found that average cooling and dehumidifying effects of thermal labyrinth system in Aug. are 3.7℃ and 3.1gw/kgda (9.92kW and 18.51kW),respectively, and average heating and humidifying effects in Nov. are 8.7℃ and 0.7gw/kgda (19.50kW and 3.89kW), respectively. Total outdoor air sensible and latent, cooling and heating load was found to be reduced by 38.8% through the thermal labyrinth system
단열피복을 통한 주상복합건물 알루미늄 커튼월 패스닝 유닛의 에너지성능 향상에 관한 연구
송승영,석호태,구보경,김윤정 대한건축학회 2006 대한건축학회논문집 Vol.22 No.2
Aluminium curtain wall system is commonly used in high-rise residential complex. For the energy efficient curtain wall system, it is necessary to improve the insulation performance of fastening unit, which enjoins the curtain wall unit to the slab, because hot water pipes for radiant heating are installed on the slab in Korean residential building. However fastening unit becomes thermal bridge at which heat loss increases. It is attributable to the lack of insulation even though fastening unit is composed of metals with high thermal conductivity.Thus, this study aims to suggest the efficient insulation method for fastening unit to improve the energy performance. Three alternatives of fasteners coated with insulation paint and urethane foam are selected in due consideration of construction convenience. Heating energy performance and economical efficiency of each alternative are analyzed by 3 dimensional annual transient heat transfer simulation and simple payback period method, respectively.