Simulation of Groundwater Thermal Transport of GWHP System Sustainable Running

The GWHP (Groundwater Heat Pump) system is a new pattern of exploitation of groundwater energy resource. Studying processes and laws of groundwater thermal coupled transport in aquifer is the technical key to sustainable running of GWHP system project. In this case study, we built a convection dispersion model which described the groundwater thermal transport in aquifer of the GWHP system project in Chengdu. We simulated the processes of groundwater thermal coupled transport in aquifer under special groundwater flow and heat source conditions in summer running period of this GWHP system, and discussed the effects of heat load designing, pumping injecting wells arrangement schemes, and system operation modes, on the processes of groundwater thermal transport in aquifer. The results showed that the operation modes had different effects on occurrence and intensity of groundwater heat penetrating, which depending on the groundwater flow between pumping and injecting wells. This work provided theoretical references for sustainable running of GWHP system.