复合保温墙体传热研究

针对复合保温墙体传热问题 ,在分析其组成及传热特点的基础上 ,建立数学模型 ,并采用有限差分隐式格式求解。求解中结合实测数据进行数值计算 ,得到复合保温墙体内各点温度在外部温度扰动情况下随时间的波动值。计算结果与实测结果比较表明 :使用数值方法研究复合保温墙体的传热问题具有效率高、计算精度高的特点 ,能方便地用于解决优化建筑结构组成及分析热负荷或冷负荷方面的实际计算中

RESEARCH ON HEAT TRANSFER IN COMPOSITE WALLS WITH HEAT PRESERVATION LAYER

Aimed at the heat transfer problem of composite walls with heat preservation layer,and based on analyzing their compositions and heat transfer characteristics,the mathematic model was set up and the solutions of heat transfer are obtained with the implicit finite difference method.The temperatures of all dots in composite walls varying with the time were calculated combined with the testing data.Compared with the testing values,the numerical method to deal with the heat transfer problem of composite walls has the characters of high efficiency,high precision,and it can be used in the optimization of structure and the calculations about analyzing the heat or cold load of the building structures.