Ground Source Heat Pump Well Water System Hydraulic Analysis And Energy-saving Technology Research

In recent years, along with the social economy development is accelerated ceaselessly, the problems of environment and energy has become one of the main bottlenecks in economic development of containment. Plus the people to the living environment of comfort requirements continue to increase, leading to the building energy consumption in total energy consumption of social economy in the proportion increased gradually. According to statistics, in the United States national building energy consumption has occupied30%of total energy consumption, in Switzerland and other countries have even reached more than70%. Thus, high energy consumption of building heating in winter and cooling in summer is used generally, solve the problems of energy waste and environmental pollution has been imminent. Therefore, the water source heat pump is a kind of highly efficient energy saving, environmental protection, heat supply and refrigeration technology, very worthy of study and discussion.Underground water source heat pump system with its environmental protection, energy saving, high efficiency, low cost features to the field of building energy conservation brought a ray of breeze, in the HVAC industry, underground water source heat pump system has been more and more applied. However, in the underground water source heat pump system in comprehensive utilization, still exists imperfect aspects, some need people to pay attention to the problem rises to surface gradually, most important is the diving pump head and the groundwater recharge.The submersible pump is an important equipment for deep well water. When the underground water source heat pump system running stage, the system needed lift for the decline of groundwater level with the highest point of elevation difference and the system along with the local resistance loss and; but when the system is running to the stationary phase, the system needed lift only along with local resistance loss of pressure head. On the submersible pump, if a high lift pump, for low lift pumping, on the surface seems to be accelerating the pumping speed, improves the pumping efficiency, but in fact the loss outweighs the gain., should not be advocated. But recharging problems need more attention, in the system of reinjection pipeline, similar to rainbow straw principle, pressure in the pipeline from the aquifer with the height of the fall, and large vacuum causes the vaporization of the liquid, producing local gas plug phenomenon, have a great impact on groundwater recharge.Research shows that:In the deeper groundwater areas, the use of dual-source heat pump system submersible pump groundwater solution than using stand-alone submersible pump underground water source heat pump system is more advantageous solution. However, to ensure that dual-source heat pump system submersible pump groundwater recharge of the groundwater system does not produce the phenomenon of air lock, you need to recharge the system before the design testing and correction, if necessary, should be properly pressurized.