Abstract: When the ground source heat pump (GSHP) is utilized to supply energy for building HVAC system, the method of calculating the energy supply of shallow geothermal energy and the building energy consumption respectively is often used in design stage. However, this kind of method can not realize dynamic evaluation under different operating conditions. In this paper, a method based on the integration of BIM (Building Information Model) and GIS (Geography Information System) is proposed, which gives full play to the advantages of BIM in building high visualization and GIS in spatial information analysis and processing. This method integrates building components and underground spatial information, and realizes the 3D evaluation of shallow geothermal energy development suitability. The Zhu Gongshan Building of Nanjing University is taken as an example for the verification. Based on the seasonal average capacity-demand ratio index and monthly fluctuation of capacity-demand ratio, the suitability of shallow geothermal energy development and utilization in winter is analyzed dynamically. The results show that the shallow geothermal energy can meet the demand of the building in most of the time, and its suitability evaluation grade is medium. It is proved that the 3D dynamic evaluation method for the suitability of shallow geothermal energy development based on the BIM and GIS integration is feasible.

Key words: shallow geothermal energy, suitability, capacity-demand ratio, dynamic evaluation, evaluation grade