建筑围护结构相变蓄热与自然通风技术耦合模拟分析——以合肥地区为例

Coupling simulation on phase change heat storage and natural ventilation for building envelope——Taking Hefei as an example

随着人们对建筑室内热舒适性要求的提高,建筑能耗,尤其是供暖、通风和空调系统的能耗也在不断增加,因此建筑节能潜力巨大的通风蓄热储能系统受到越来越广泛的关注。以位于夏热冬冷地区的合肥为研究地域,对3种非相变围护结构材料和相变围护结构材料的蓄热与自然通风耦合过程进行非稳态模拟研究,通过分析室内风速场分布和温度场分布,获得合肥地区建筑围护结构的自然通风与不同材料蓄热耦合规律,为改善建筑室内热环境、降低建筑能耗以及被动式建筑设计与开发提供理论依据。

With the continuous improvement of indoor thermal comfort requirements, building energy consumption, is also increasing, especially such as building heating, ventilation and air-conditioning systems. So, the ventilation energy storage system with great potential on building energy saving has attracted more attention. In this paper, Hefei in the hot summer and cold winter area is taken as the research case to simulate the coupling process of heat storage and ventilation. 3 kinds of non-phase change envelope structure materials and phase change envelope structure materials are investigated. By analyzing the distribution of indoor wind speed field and temperature field, the coupling law of natural ventilation and heat storage of different materials for the building envelope in Hefei area is obtained. The research results provide technical support for improving indoor thermal environment and reducing building energy consumption, and also provide theoretical basis for passive building design and development.