摘要
本文针对寒冷地区常用的内循环箱体式北向双层皮玻璃幕墙(DSF),介绍了冬季工况采用通风腔排风的原理及优点,分析了其传热过程并建立了能量平衡方程,而后与传统的排风热回收方式进行了比较。结果表明,排风比小于40%时采用通风腔排风较传统的排风热回收方式有更高的热回收效率,同时可提高DSF内侧玻璃的温度,增强室内房间的热舒适性。
In this paper, focusing on northward internal circulating double-skin facade （DSF） in cold area, the principles and advantages of DSF＇s ventilation cavity under working conditions in winter were introduced, the heat transfer process was analyzed and the energy balance equation was established. Furthermore, this ventilation strategy was compared with the traditional exhaust air heat recovery mode. The results indicated that ventilation cavity had much higher heat recovery efficiency than the traditional ventilation mode when the air exhaust ratio was less than 40 % . Meanwhile, the interior glass temperalure of DSF would be increased and indoor thermal comfort would be improved.
出处
《建筑科学》
北大核心
2009年第12期71-74,共4页
Building Science
基金
科技部国家科技支撑项目"世博中心智能化生态建筑技术集成研究"(2006BAK13B04)
关键词
双层皮玻璃幕墙
排风策略
能量平衡方程
冬季工况
通风腔
DSF, exhaust air strategy, energy balance equation, winter working condition, ventilation cavity
