大型公共建筑门厅空间物理环境研究

Measurement investigation of the physical environment in the entrance hall of an exhibition building

为研究大型公共建筑门厅空间物理环境,以具有夏热冬暖地区典型气候特征的广西某展馆为例,采用软件模拟加实地测量的方法,从风、光、热三方面进行研究。测试包括入口门厅风速、自然采光条件下照度水平、两个通高大厅垂直温度分布、三层大厅周边走道及展厅水平温度分布、室内表面温度、屋顶气象数据等。通过对数据的分析可知其风、光环境基本满足条件,热环境相对不佳。就此提出改善措施:(1)入口门厅加设玻璃门及风幕机,进行温度缓冲;(2)大厅上方增设活动式通风口,引入自然通风;(3)采光玻璃顶加装遮阳透光拉膜和光伏喷淋降温系统,并采用自洁防污透光隔热玻璃涂料,达到降温隔热效果。

In order to study the physical environment in large public building,an exhibition building in Nanning city of Guangxi Zhuang Autonomous Region was selected as a case study subject.The location of the subject building,Nanning city has a hot-summer and warm-winter climate.The wind,light and thermal environment was investigated using numerical simulation and field measurement.Measurement parameters were indoor and outdoor air temperatures,surface temperatures,air velocity and illumination level in the entrance hall,and ambient weather parameters as well.Through analysis of measured results,it was found that there is a satisfactory wind and lighting environment in the entrance hall,whereas the thermal environment was relatively undesirable.Thermal improvement measures and strategies for the exhibition building were proposed in the paper.The corresponding improvement measures in the three aspects are as follows:(1)A glass door and air curtain should be installed in the entrance hall for temperature buffer;(2)A movable vent can be added above the hall to guide natural ventilation;(3)A transparent sun-shading membrane and a solar-PV-drived spray cooling system are installed in the roof;The roof glass is coated with self-clean and heat-insulated coating for solar heat invasion.