夜间通风与建筑蓄热的非线性耦合

Nonlinear Coupling Between Night Ventilation and Thermal Mass

夜间通风是一种冷却建筑物的低能耗手段,其冷却效果和建筑蓄热材料之间的关系非常密切。研究夜间通风和建筑蓄热能力之间的关系对指导建筑物的设计意义重大。在以往的研究中,一般将夜间通风和建筑蓄热之间的关系看成是线性变化的,但是在实际情况中,它们的关系往往是呈非线性变化的。本文独立提出了夜间通风和建筑蓄热的非线性耦合模型并编制了计算程序,最后结合实验进行对比分析,发现数值解和实验数据能够较好吻合。说明该模型可以有效的预测夜间通风的效果。

Night ventilation is a low energy strategy for cooling a building, which cooling effect is closely related with thermal mass. It is important to investigate the relation between night ventilation and thermal mass for the building design. In the investigation before, the relation between night ventilation and thermal mass is considered linear. In fact, the relation between them is nonlinear. A simplified ventilation and thermal model is proposed in this paper. The model has been compared with measured values. It is concluded that such a model is a valuable tool to predict the effect of night ventilation.