Thermal response tests (TRT) are performed on borehole heat exchangers to estimate design properties needed when the boreholes are coupled to heat pumps. In conventional TRTs the heat injection or extraction rate from an external heater or heat pump is controlled to be nearly constant. More recently some investigators have conducted TRTs while controlling the inlet fluid temperature to be nearly constant. This paper develops computationally efficient heat transfer models that match measured transient temperature curves throughout the entire duration for both types of tests. The models include variable heat rates, thermal storage of the borehole fluid and the different properties between the grout and ground. The models are combined with parameter estimation methods and applied to both types of data sets from the same borehole. An uncertainty analysis indicates the models estimate ground thermal conductivity and borehole thermal resistance with approximately the same uncertainty for both types of tests.

在井筒热交换器上进行热响应测试（TRT），以估算将井筒与热泵连接时所需的设计特性。在传统的TRT中，将来自外部加热器或热泵的热量注入或抽取速率控制为几乎恒定。最近，一些研究人员在控制进口流体温度几乎恒定的同时进行了TRT。本文开发了计算有效的传热模型，该模型在两种类型的测试的整个持续时间内都与测得的瞬态温度曲线相匹配。这些模型包括可变的热速率，井眼流体的蓄热以及灌浆和地面之间的不同特性。这些模型与参数估计方法结合在一起，并应用于来自同一钻孔的两种类型的数据集。