确定墙体表面换热系数的辨识方法探讨

Research on Identification Methods of Determining Heat Transfer Coefficient of Wall Surface

实测了墙体表面热流和墙体表面与室内空气之间的温差 ,并通过遗传算法和最小二乘法辨识分别得到了各算法的表面换热系数估计值。比较热流实测值和两种算法的热流预测值 ,可知遗传算法的预测热流与实验热流非常吻合 ,说明遗传算法是一种利用墙体表面的动态实验数据获得表面换热系数的有效方法 。

Two variables, the wall surface heat flux and the temperature difference between the wall surface and the indoor air, are measured?The predictors of the heat transfer coefficient of wall surface are separately extracted from these experimental datum by Genetic Algorithm and Least Square Method. Comparing the predictors and the experimental heat flux, the results show that Genetic Algorithm is available to this issue.