Evaluation on field test methods of ground thermal properties for ground-source heat pump systems

 Briefly summarizes various theoretical models and algorithms of the field test methods, establishing a three-dimensional numerical model of ground source heat pump system, constructs a virtual standard geology hole, and obtains the thermal response curves by simulation. Investigates the accuracy of three common methods determining ground thermal properties. The results show that compared with the cylinder heat source model, the two testing methods based on the line heat source model have higher precision.