节能型外呼吸式双层通风幕墙热工性能分析及优化  

The thermal performance analysis and optimization of energy-saving breathing type double ventilation skin facade

作　　者：廖袖锋 董孟能[2] 张真真[3] 毛伟 周书兵 

机构地区：[1]重庆市合川区建设工程质量监督站,重庆401520 [2]重庆市城乡建设委员会,重庆400014 [3]重庆大学,重庆400045 [4]机械工业第三设计研究院,重庆400039

出　　处：《新型建筑材料》2013年第4期83-86,94,共5页New Building Materials

摘　　要：采用Fluent软件对广州市某外呼吸式双层幕墙热通道内的温度场和速度场进行模拟分析。通过分析通道宽度、送风速度及风机安放位置等因素对综合传热系数的影响,研究了不同设计工况下该双层幕墙的热工性能,并相应提出双层幕墙的最优化设计。结果表明,在机械送风速度一定情况下,通道宽度对幕墙综合传热系数的影响很大,通道宽度越大,幕墙的热工性能越好;在通道宽度一定情况下,随着送风速度的增大,幕墙的综合传热系数逐渐减小并趋于稳定,最佳送风速度为1.5 m/s;不同的幕墙通道宽度下,风机的最佳安放位置与送风速度有关。Using the fluent software simulates the temperature field and velocity field inside the heat channel of double ven- tilation skin facades in Guangzhou. Discuss the influences of channel width, velocity and the different design conditions of fan on the integrated heat transfer coefficient. Analyze the thermal performance of the double skin facade with the different design conditions, and put forward the optimization design of double skin facade. The results show that, the channel width has a great influence on the integrated heat transfer coefficient of DSF with the certain velocity. The greater the channel width,the better the thermal performances of DSF is. When the channel width is certain, along with increase of the air speed,the integrated heat transfer coefficient decreasing and its trends gradually steady, the best air speed is 1.5 m/s, When the channel width is different,the optimal design condition of fan has a certain correlation with the air speed.

关 键 词：双层通风幕墙 CFD 温度场 速度场 综合传热系数 

分 类 号：TU111.19[建筑科学—建筑理论]