技术中心

【英文篇名】 Building environment design simulation software DeST(11): treatment of dynamic heat transfer through underground zone 【作者中文名】 谢晓娜; 宋芳婷; 张晓亮; 刘烨; 江亿; 【作者英文名】 By Xie Xiaona; Song Fangting; Zhang Xiaoliang; Liu Ye and Jiang Yi Tsinghua University; Beijing; China; 【作者单位】 清华大学; 【文献出处】 暖通空调, Hv 室外地表温度; 室内地板表面温度; 等效平板; DeST; 【英文关键词】 dynamic heat transfer through underground zone; outdoor ground surface temperature; indoor floor surface temperature; equivalent slab; DeST; 【摘要】 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。 【英文摘要】 Analyses the characteristics of the heat transfer through underground zone between building and outside. Reviews current literatures and limits and problems of current simulation software thereof. Analyses the physical processes of the heat transfer. Firstly,dividing the temperature of outdoor ground surface into some sine waves,discusses how to get the indoor floor surface heat flow rate caused by these sine waves. Secondly,presents the variation of the heat flow of indoor floor surface with the surface dy...