建筑门窗玻璃幕墙传热系数现场测试分析

Field test and research on heat transfer coefficient of glass curtain wall in building windows and doors

为了提高玻璃幕墙的应用传播度,基于COMSOL大型仿真软件平台,在虚拟玻璃幕墙上选取5个以上的冷热源,并设置温差间隔为10℃左右,仿真计算玻璃幕墙在6种不同温度下的传热形式.研究结果表明,在任何情况下,玻璃幕墙的传热过程都与玻璃幕墙两侧的温度差有关,均由温度较高的一侧向温度较低的一侧传热,且接近玻璃幕墙温度较低的一侧等温线较为分散,接近温度高的一侧的等温线较为紧密.建议在玻璃幕墙的设置过程中,尽量减少两侧之间的温度差,并且根据太阳辐射的情况,选择耐热的玻璃材质.

In order to reduce the gap between the traditional external wall protection structure and improve the application transmission degree of the glass curtain wall,based on the COMSOL large-scale simulation software platform,more than 5 cold and heat sources were selected from the virtual glass curtain wall,and the temperature difference interval was set to about 10℃to simulate the heat transfer forms of the glass curtain wall at 6 different temperatures.The research results show that the heat transfer process of the glass curtain wall is related to the temperature difference on both sides of the glass curtain wall no matter what the situation is.Heat transfer is conducted from the side with higher temperature to the side with lower temperature,and the isotherm close to the side with lower temperature is more dispersed,while the isotherm close to the side with higher temperature is closer.It is suggested that in the process of setting up the glass curtain wall,the temperature difference between the two sides should be reduced as far as possible,and heat-resistant glass materials should be selected according to the situation of solar radiation.