Designing U-tube ground heat exchanger by dynamic simulation method

Presents a numerical model for designing U-tube ground heat exchanger. Validates the accuracy of a proprietary simulation software by comparing it with tested data. Based on the building annual dynamic load simulation, conducts a 30-year hourly simulation on ground heat exchanger of a project by using the software, and recommends a scheme of ground heat exchanger. Indicates that heat rate per meter in depth of borehole is insufficient for designing ground heat exchanger, and dynamic simulation is essential.