地下换热器热工参数估计方法

Thermal parameters estimation of underground heat exchanger

基于一组实测数据,对地下换热器热工参数估计方法进行了讨论。直线斜率法可以计算导热系数、体积比热以及孔内热阻,但必须补充恰当的热阻计算式。采取多参数寻优法估计,建议以导热系数及孔内热阻作为独立变量,体积比热另行确定。

Based on a set of measured data,the thermal parameters estimation method of underground heat exchanger is discussed.The linear slope method can calculate the heat conduction coefficient,the volume heat and the thermal resistance of the hole,but must be added to the appropriate thermal resistance calculation formula.The thermal conductivity and the thermal resistance of the hole are determined by the thermal conductivity and the thermal resistance of the hole as independent variables.