采光天窗对室内光热环境影响的模拟研究
Simulation study on influence of skylights on indoor light and thermal environment
摘要：
建立了带天窗的公共交通枢纽建筑模型,综合运用静态与动态评价方法对其光热环境特性进行了系统分析和量化评价,同时结合能耗模拟研究了公共交通枢纽建筑能耗情况及采光天窗对热环境的影响。结果显示,在阴雨天气条件下,自然采光效果难以满足使用需求,而在晴朗天气时,过强的太阳辐射又容易导致眩光和热不适问题。建议通过优化天窗构造形式和设置可调节遮阳装置来改善建筑能耗性能;建议基于热舒适标准,通过优化天窗遮阳系统和调整玻璃光学性能,将夏季辐射温度控制在接近空气温度的水平,同时确定合理的太阳光直接透射比限值,以改善天窗下方的热环境质量。
Abstract：
This study establishes a building model of a public transportation hub with skylights, the static and dynamic evaluation methods are comprehensively used to systematically analyse and quantitatively evaluate its light and thermal environmental characteristics. At the same time, the energy consumption of the public transportation hub building and the influence of skylights on the thermal environment are studied based on energy consumption simulation. The results show that in rainy weather conditions, the natural lighting effect is difficult to meet the users’ needs, while in sunny weather, excessive solar radiation can easily cause glare and thermal discomfort problems. It is recommended to improve building energy efficiency by optimizing the skylight structure and setting adjustable sunshade devices. It is recommended to control the summer radiation temperature to a level close to the air temperature by optimizing the sunshade system of skylights and adjusting the optical performance of the glass based on the thermal comfort standard, and at the same time, determine a reasonable direct solar transmittance limit to improve the quality of the thermal environment under the skylights.
Keywords:skylight; natural lighting; light and thermal environment; public transportation hub; energy consumption; sunshade