Thermal performance evaluation of a massive brick wall under real weather conditions via the Conduction Transfer function method
Thermal performance evaluation of a massive brick wall under real weather conditions via the Conduction Transfer function method
复制标题
通过传导传递函数方法评估真实天气条件下大块砖墙的热性能
DOI：
10.1016/j.cscm.2017.04.003
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发表时间：
2017
影响因子：
6.2
通讯作者：
E. Antczak
中科院分区：
文献类型：
--
作者：
E. Sassine;Z. Younsi;Y. Cherif;E. Antczak
对建筑的制冷和供暖能源需求的可靠估计对于围护结构或暖通空调设备的任何最终热改进都是必不可少的。本文提出了一种利用傅里叶变换计算CTF系数的频域回归（FDR）方法来评价厚壁热工性能的有趣方法。该方法基于EN ISO 13786（2007）程序，对热矩阵的元素使用泰勒展开。通过实验加热箱对数值结果进行了验证，该实验加热箱的一侧是代表真实天气条件的随机边界条件，另一侧是代表真实情况下内部环境的恒温剖面。最后，进行频率分析，以评估所使用方法的有效性和准确性。结果表明，二阶发展足以预测所研究的墙体在建筑应用中遇到的频率范围内（1小时时间步长）的热行为。该方法适用于外界温度随机的实际天气条件下的热传递分析；它还允许通过频率分析来评估墙体的热性能。
The reliable estimation of buildings energy needs for cooling and heating is essential for any eventual thermal improvement of the envelope or the HVAC equipment. This paper presents an interesting method to evaluate the thermal performance of a massive wall by using the frequency-domain regression (FDR) method to calculate CTF coefficients by means of the Fourier transform. The method is based on the EN ISO 13786 (2007) procedure by using the Taylor expansion for the elements of the heat matrix. Numerical results were validated through an experimental heating box with stochastic boundary conditions on one side of the wall representing real weather conditions and constant temperature profile on the other side representing the inside ambiance in real cases. Finally, a frequency analysis was performed in order to assess the validity and accuracy of the method used. The results show that development to the second order is sufficient to predict the thermal behavior of the studied massive wall in the range of frequencies encountered in the building applications (one hour time step). This method is useful for thermal transfer analysis in real weather conditions where the outside temperature is stochastic; it also allows the evaluation of the thermal performance of a wall through a frequency analysis.