基于太阳辐射量的高海拔地区建筑屋面倾角研究——以拉萨市为例

Study on the Inclination of Building Roofs in High Altitude Areas Based on Solar Radiation--A case Study of Lhasa City

拉萨市地处高海拔地区,属于太阳能富集地区,且拉萨地区冬季相对寒冷,需要主动供暖设备去保证建筑室内环境的舒适性,但因此会需要消耗大量的能源。文章基于拉萨市气象数据,借助Grasshopper平台的Ladybug分析软件,以单位面积屋面接收太阳辐射总量为目标,以屋面倾角变化作为切入点,分析研究不同倾角的屋面对太阳辐射收集能力的强弱,从建筑本体设计层面去更好地降低建筑能耗,同时为当地的太阳能收集体系提供更完善的物质形态支撑。

Lhasa is located in a high-altitude area,which is a solar energy enrichment area.Besides,Lhasa is relatively cold in winter,so active heating equipment is needed to ensure the comfort of the indoor environment of buildings,but it also needs a lot of energy consumption.Based on the meteorological data of Lhasa City,with the help of the Ladybug analysis software of the Grasshopper platform,this paper takes the total amount of solar radiation received by the roof per unit area as the goal,and the change of roof inclination as the entry point to analyze and study the strength of the solar radiation collection ability of the roof of different inclination angles,hoping to better reduce building energy consumption from the design level of the building body,and provide more complete physical form support for the local solar energy collection system at the same time.