خلاصة:
Energy efficiency in office buildings has been the center of attention for many researches. This
special attention is due to highly energy consumption in this building type. Refinement of facade and building’s envelop is a good approach to reduce buildings energy requirements. Double skin facade concepts are commonly used to achieve that object. Although the concept is not new, there is a growing tendency from the architects to put it into practice. However inappropriate selection of technical parameters in this kind of façade, such as its interior/ exterior openings, layers, materials and shading device would lead to reverse expected results. The objective of this study is to
improve and optimize the thermal performance of an office building in hot and dry climate. For this purpose a suitable double skin façade concept is designed to reduce the building’s annual energy requirements. This concept is optimized by integrating with a windcatcher. The optimization is performed based on simulating a designed office building by Energy Plus software. The results revealed that double skin façade integrated with wind catcher can significantly reduce annual energy requirement by 26.65%. The proposed solution can be considered as an effective platform for sustainable architecture and reduction of energy consumption.
ملخص الجهاز:
Double skin façade are examples of these passive systems which optimize energy consumption based on climatic parameters such as orientation and intensity of wind along with orientation of building.
Although there are numerous studies related to double skin façade, few of them have tried to localize the mentioned technology aimed at optimizing energy consumption.
One of the approaches used to reduce energy consumption for cooling in local architecture of hot and dry climate is to use windcatcher (Khalili & Amindeldar, 2014; Bahadori & Yaghobi, 2006) which is a conventional architectural masterpiece in vernacular architecture of Iran.
The current study is aimed at designing and modeling double skin façade for Shiraz official buildings based on Shiraz local architectural patterns.
To this end, different usages of double skin façade are analyzed and the ecological effects of canopies and windcatchers on building energy consumption are investigated.
Therefore, the software Enrgy Plus is proved to be a useful tool to simulate double skin façade in order to investigate energy optimization in official buildings.
Additionally, performance of different forms of DSF installed in northern and southern sections affected by external environment in different seasons is investigated to optimize the building energy consumption.
Assessment of models without Sheds Results of thermal evaluation of an office building without double skin façade located in Shiraz reveal that to 202552 kw/ hr of energy is consumed for cooling and heating.
CONCLUSION Simulation results have shown windcatcher and double skin façade hvea significant effects on reducing building energy requirements.