本文推导了一个一维热模型来描述地热热泵垂直井式换热器（BHEx）周围的温度场。将入口和出口管流建模为一个整体，并添加有效热容来模拟流体和管道中的蓄热。然后使用参数估计技术来估计与模型相关的各种参数，包括土壤和填充钻孔和U形管周围的灌浆的热导率。该模型通过一个含有已知导热系数的沙子的实验装置的测试数据进行了验证。根据该模型得出的砂土导热系数估计值与独立测量值吻合良好。单元:双引文:研讨会，ASHRAE交易，第105卷，第。1.

A one-dimensional thermal model is derived to describe the temperature field around a vertical borehole heat exchanger (BHEx) for a geothermal heat pump. The inlet and outlet pipe flows are modeled as one, and an effective heat capacity is added to model the heat storage in the fluid and pipes. Parameter estimation techniques are then used to estimate various parameters associated with the model, including the thermal conductivity of the soil and of the grout that fills the borehole and surrounds the U-tube. The model is validated using test data from an experimental rig containing sand with known thermal conductivity. The estimates of the sand's thermal conductivity derived from the model are found to be in good agreement with independent measurements.Units: Dual