建筑物排热对城市区域热气候影响的长期动态模拟及分析
Long-term dynamic simulation of the effect of building anthropogenic heat on urban thermal climate
摘要：
探讨了城市特定区域内热气候的形成机理，特别是建筑物排热在热气候形成中所起的作用，对于从建筑角度减缓城市高温化进程和热岛效应、有针对性地提出改善室外热舒适环境、降低建筑能耗的方法具有重要意义。以南方某典型城市实际大型CBD规划改造项目为研究对象，利用已建立的城市区域热气候预测模型，通过长期动态模拟，分析了城市化后室外热气候特征及室外热平衡规律。结果表明，夏季下垫面传热和空调冷源系统排热分别是城市气候逐渐向高温高湿化发展的主要成因。
Abstract：
Discusses the generation mechanism of specific urban district thermal climate, especially the effect of building anthropogenic heat, which is significantly important for making proposals of effective strategies to improve the urban thermal climate, alleviate the urban temperature rise and heat island effects, and reduce the building energy consumption. Taking an actual large CBD design and reconstruction project of a characteristic southern city as an example, based on the established urban district thermal climate prediction model, analyses the characteristics of outdoor thermal climate and heat balance by long-term dynamic simulation. The results show that both the heat transfer through the underlying surface and exhaust heat from the building HVAC system are the key origins of the trend of high temperature and high humidity in summer.
Keywords:building anthropogenic heat, numerical simulation, urban district thermal climate, prediction model