百叶组合式建筑太阳能烟囱自然通风性能  

NUMERICAL STUDY ON NATURAL VENTILATION PERFORMANCE OF COMBINED SOLAR CHIMNEY WITH BLINDS

作　　者：孙瑞 雷勇刚 宋翀芳 景胜蓝 Sun Rui;Lei Yonggang;Song Chongfang;Jing Shenglan(College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学土木工程学院,太原030024

出　　处：《太阳能学报》2021年第10期452-457,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51106103);山西省高等学校科技创新项目(2017120)。

摘　　要：提出百叶组合式建筑太阳能烟囱,通过具有太阳能吸热板的主通道和风诱导通道的共同作用实现室内自然通风的强化。通过三维数值模拟,研究不同太阳辐射强度和室外风速下,风诱导通道宽度与主通道宽度的比值w_(2)/w_(1)、百叶窗安装高度与太阳能烟囱高度的比值h_(4)/h_(1)对建筑自然通风性能的影响。结果表明,百叶组合式建筑太阳能烟囱通风量随h_(4)/h_(1)值的增大先减后增再减,当风速相同而太阳辐射强度不同时,在h_(4)/h_(1)=0.30附近的通风量最大;随着w_(2)/w_(1)值的增大,通风量先增后减,室外风速对通风量的影响较大。A combined solar chimney with blinds based on the coupling action of wind induced channel and main channel was introduced.The effects of the ratio of the wind induced channel width to the main channel width(w_(2)/w_(1)),the ratio of the blinds installation height to the solar chimney height(h_(4)/h_(1)),solar radiation intensity and outdoor wind speed on the natural ventilation performance were studied by three-dimensional computational fluid dynamics method.The results show that with increasing of the ratio(h_(4)/h_(1)),the mass flow rate of the new structure firstly reduces,and then goes up reaching the maximum around 0.3.However,the mass flow rate reduces when the ratio(h_(4)/h_(1))is beyond 0.3.As the ratio(w_(2)/w_(1))increases,the mass flow rate firstly increase,and then decreases.Comparison of solar radiation,the change of wind speed affects the mass flow rate more significantly.

关 键 词：太阳能烟囱 太阳能建筑 通风量 自然通风 百叶 数值模拟 

分 类 号：TU834.1[建筑科学—供热、供燃气、通风及空调工程]