| Summary: | 碩士 === 國立中央大學 === 營建管理研究所 === 102 === In recent years, global warming and recklessness of the energy has significant attention to be avoided. Building is one of the biggest energy consumer and largest contributors to the increase of CO2. Double wall is one of the building element method which became popular to utilized in recent years. Several studies mentioned this method can be reduced the impact of fluctuative temperature. Although some of the studies have been done to prove that this method can be reduced the air temperature and cooling energy demand, the particular application of double wall with the regularity among materials, air gaps and other parameters such as buildings side orientation are no attention to date. Hence, it may raise the question, which double-wall combination can work as its optimum to reduce cooling energy demand. Based on these background issue, this study aim is to investigate the optimum combination of materials and air gaps of double wall in terms of reducing cooling energy consumption and also to investigate the impact of the buildings side orientation in double wall utilization. In order to determine these result, this study was simulated by using EnergyPlus in DesignBuilder software. The result obtained that double wall utilization with combination between double block and 100mm air gap in all of the building sides was given the significant impact into cooling energy consumption reduction up to 31,90% in a year. Double wall utilization is depending on the buildings side orientation because of the different amount of solar heat gain. U-value of the materials are also affected into the double wall performance. The cooling energy consumption reduction is inversely proportional by the increasing the air gap width. But, by increasing air gap of 100mm width or above is only help the percentage of reduction in smaller amount.
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