Abstract
Double Skin Facades (DSFs) have the advantages of heat preservation, heat insulation, noise reduction and energy saving. Therefore, DSFs are gradually developing into a new direction of environmental protection and energy saving of the curtain wall. This article mainly introduces the technical characteristics of DSFs from two aspects: the geometric structures of the hot aisles and the ventilation modes. And this article systematically reviews more than twenty articles which have dealt with the energy performances: thermal performances and ventilation performances. The paper finishes with some conclusions: The unique structure of DSFs makes DSFs outstanding in terms of energy saving, ventilation. However, DSFs also have some shortcomings: the initial investment and maintenance costs are relatively high, the fire protection design is relatively difficult, and the industry lacks industry standards. Therefore, it is necessary to estimate the overall energy-saving effect in advance, continue to in-depth optimization research on the engineering application value of DSFs, and ultimately bring good social and economic benefits.
Highlights
Energy crisis and environmental pollution are increasingly becoming global problems, and promoting building energy conservation and environmental protection has become a new trend in building
Double Skin Facades (DSFs), which are composed of outer facade, the intermediate cavity and inner facade
According to the geometric structures of hot aisles in the double skin facades, DSFs can be classified into four types: box-type, shaft-type, corridor-type, integral-type [2]
Summary
Energy crisis and environmental pollution are increasingly becoming global problems, and promoting building energy conservation and environmental protection has become a new trend in building. Compared with the traditional single-layer curtain wall, double skin facades show unique advantages in terms of thermal performance. It can achieve the fundamental functions as facade, such as isolating noise, keeping warm, resisting wind and rain, and shading the sunlight, and actively using natural energy to improve energy efficiency, which represents the new development direction of curtain wall technology [1]. Adjustable sunshade device is arranged in the cavity Such curtain walls are called double skin Facades This technology first appeared in developed countries such as Europe. It has developed rapidly in China in recent years and has achieved certain results. Intensifying the design of outer unit curtain walls, inner component curtain walls, thermal channels, fire protection measures, etc. can achieve good energysaving effects of double skin Facades
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