基于太阳能的新型双层呼吸窗的设计及验证

Design and Verification of Double-layer Window Based on Solar Energy

随着建筑与艺术的发展,双层玻璃幕墙被越来越多地应用在大型公共建筑中。为了扩大这一技术的适用性,结合太阳能发电技术设计了一种新型的、基于太阳能的双层呼吸窗,介绍了其设计思路、系统组成、在不同季节时的工作原理。该设计在双层呼吸窗中间的空腔里添加了风机,在需要开启时可利用搭载太阳能电池板的遮阳百叶将太阳能转化为电能为风机供电。为适应不同季节的需要,通过8个可移动的窗扇实现不同工作模式的切换,在春、秋季节可提高室内空气品质,在冬、夏季节可降低建筑能耗。通过理论计算和FLUENT数值模拟验证了该设计在夏季运行时的节能性,最后得出:进口流速对双层呼吸窗的性能影响较大,当流速在0.7~1 m/s时,向室内的传热量较少。

With the development of architecture and art,double skin facade has been increasingly used in large public buildings because of its advantages.Based on solar electric technology,a new type of double-layer window was designed to expand the applicability of this technology,which added a fan in the middle of the double-layer window.The solar energy could be converted into electricity for the fan by the solar panels installed on the sunshade shutters.Eight movable window sashes were designed to improve indoor air quality in the spring and fall,and reduce building energy consumption in the winter and summer.Through theoretical calculation and CFD numerical simulation,the energy-saving performance of this design was verified when it worked in summer.It was concluded that the inlet flow rate had a great impact on the performance of the double-layer window,and when the flow rate was 0.7~1 m/s,less heat was transferred into the room.