双层玻璃幕墙的未来发展Trends of Double-Skin Facades.docx

Trends of Double-Skin Facades Jeff VaglioMic Patterson Stacey Hooper* Original paper and presentation for the International Conference on Building Envelope Systems and Technologies (ICBEST) 2010 in Vancouver.Double-skin facades have historically been more common among European high-rises in part because energy prices are significantly higher in Europe than in the United States. The use of double-skin facades (DSF) in the United States for commercial buildings presents a variety of challenges and impediments, including a longer payback period on initial investment. An emerging trend in double-skin facades is the divergence of approaches related to scale. Many designs can be separated into modular systems, or a single multi-story cavity. In the United States recent applications of double-skin facades include educational institutions and residential high-rises. This paper presents an overview of the challenges of double-skin facades systems in the United States. Additionally, detailed case studies of four recent double-skin facade systems are presented.DSF Applications and Trends 1 INTRODUCTION Double-skin facade solutions have been increasingly considered over the last 20 years as a means to save energy while providing access to daylight and natural ventilation. Table 1 is a summary of common advantages and disadvantages cited by others [1-14]. The most frequently cited benefits of double-skin facades are acoustics [1] and retrofitting potential. The principal drawback of double-skin facades is the increased cost compared to traditional curtain wall systems. The use of double-skin facades is more common in Europe in part because energy prices are significantly higher than in the United States. Over time, inevitably increasing energy costs and new building performance policy will expedite the return on investment. While double-skin systems are implemented regularly in Europe, the rest of the world has lagged in implementing, or investing in, high-performance facade tec