| 检测位置对墙体传热系数最小二乘辨识精度的影响 |
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| 引用本文： | 刘丽霞,林新锋,蔡 强,贾新龙,于国清.检测位置对墙体传热系数最小二乘辨识精度的影响[J].建筑节能,2014(3):41-45. |
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| 作者姓名： | 刘丽霞 林新锋 蔡 强 贾新龙 于国清 |
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| 作者单位： | [1]上海理工大学,上海200093 [2]福建省建筑科学研究院、福建省绿色建筑技术重点实验室,福州350025 |
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| 摘 要： | 众所周知墙体传热系数检测位置对墙体传热系数检测的影响很大，因此，检测时需要确定合适的检测位置，以减小墙体传热系数现场检测的误差。对墙体模型的建立进行了介绍，采用AN-SYS软件模拟了外墙角墙体和带窗墙体的温度场与热流场，再根据最小二乘递推法辨识理论，通过Matlab软件编制程序，辨识得出墙体的传热系数，并研究了测试位置对外墙角墙体和带窗墙体传热系数辨识精度的影响，得出了外墙角墙体和带窗墙体边缘影响的范围以供参考。
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| 关 键 词： | 传热系数 辨识算法 有限元法 测试精度 影响因素 |
Effects of Testing Position on Identification Accuracy of the Wall Heat Transfer Coefficient Using the Least Square Method |
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| LIU Li-xia,LIN Xin-feng,CAI Qiang,JIA Xin-long,YU Guo-qing.Effects of Testing Position on Identification Accuracy of the Wall Heat Transfer Coefficient Using the Least Square Method[J].Construction Conserves Energy,2014(3):41-45. |
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| Authors: | LIU Li-xia LIN Xin-feng CAI Qiang JIA Xin-long YU Guo-qing |
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| Affiliation: | 1 .University of Shanghai for Science and Technology, Shanghai 200093, China; 2.Fujian Academy of Building Research, Fujian Key Laboratory of Green Buildings Technology, Fuzhou 350025, China) |
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| Abstract: | The test position has a great influence on testing the wall heat transfer coe]ficient, so ap- propriate test position will reduce the heat transfer coefficient errors. The wall model is established. The temperature and heat flux of the corner and wall with a window are simulated with ANSYS respectively. The heat transfer coefficient of the wall is identified with the identification theory of the Least Squares Re- cursive Method and Matlab software. And the it~uence of test position for identification accuracy heat transfer coefficient of the wall is studied, concluding the scope of wall edge effect for reference. of the |
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| Keywords: | heat transfer coefficient identification algorithm finite element method test accuracy in-fluence factors |
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