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分析了与地面相邻区域传热问题的特点,介绍了国内外目前关于此问题的研究状况和其他模拟软件的处理方法。分析了地下传热的物理过程,首先对室外地表温度进行谐波分析,据此给出求解室外地表温度动态变化部分作用在地下区域而引起的室内地板表面热流的方法;然后研究了室内地板表面温度变化引起的该表面热流的变化,并提出了等效平板的概念,用以解决室内外的稳态传热及室内温度动态变化时地下区域的蓄热问题。上述算法应用于建筑模拟软件DeST3.0中。最后通过一个实例给出了这种计算方法的过程与结果。
The characteristics of heat transfer in the adjacent area with the ground are analyzed. The research status and other processing methods of the simulation software at home and abroad are introduced. The physical process of underground heat transfer is analyzed. Firstly, the outdoor surface temperature is analyzed by harmonic analysis, and the method of solving the indoor floor surface heat flow caused by the dynamic change of outdoor surface temperature is given. Then, The change of surface heat flow caused by temperature change and the concept of equivalent plate are put forward to solve the problem of heat storage in underground area when the indoor and outdoor steady state heat transfer and indoor temperature change dynamically. The above algorithm is used in building simulation software DeST3.0. Finally, an example shows the process and result of this calculation method.