建筑围护材料热导率反演模拟研究

摘要

本文建立了建筑围护墙体导热反问题求解模型.采用控制容积法求解一维非稳态导热方程,得到墙体各节点的温度值;应用遗传算法编制建筑围护材料热导率的反演程序.确定了墙体的热导率,结果具有较高的计算精度,该方法可为确定广阔地理位置所对应气候条件下的建筑维护墙体热导率提供准确参照.%This paper presents a numerical model to resolve the unidirectional non-linear inverse problem of heat conduction in transient state of buildings envelope. The temperature field is calculated with the control-volume-based numerical method and the heat conductivity is determined with the genetic algorithm. The result shows that the simulation method has high calculation accuracy and it can be applied to the identification of heat conductivity in different conditions.