Study on the Flow Velocity of Groundwater Source Heat Well to the Impact of System´s Efficiency

Groundwater source heat pump system has great impact on the temperature of groundwater for a long-term. According to the continuity equations, motion equations and energy equations of fluid cylindrical coordinate system and the boundary conditions of pumping production and injection well, the forced convection in turbulent flows model of smooth cylinder has been established. Consider three ways of heat transfer, the inside wall of cylinder based on solid heat conduction theory and the other parts of the drill based on fluid convective heat transfer. Using COMSOL Multiphysics software to analyze the model simulation. Theory and example show that this model can be applied in the simulation of groundwater source heat pump temperature field by the setting of material, bound and mesh.