Research on Energy Efficiency Promotion of Ground Source Heat Pump System in Science and Technology Residence
In order to improve the geothermal energy utilization efficiency of the ground source heat pump system in the science and technology residence,this study relies on the China Railway Construction·Huayu Lakeside Project,and conducts research on the buried pipe energy end,air conditioning end,self-control system,and energy consumption supervision and management system end of the ground source heat pump system.Through scheme comparison,equipment selection,and data calculation methods,the energy-saving effect evaluation and economic analysis are carried out.The results show that the cooling capacity of single well with double U-tube heat exchanger is 11.1%higher than that of single U-tube.The annual operating cost of the selected screw-type ground source heat pump unit is 11%lower than that of the conventional screw-type water-cooled chiller,and the annual operating cost of the magnetic suspension frequency conversion centrifugal chiller is only 66%of that of the conventional fixed frequency water-cooled centrifugal chiller.The temperature and humidity independent control system with replacement fresh air at the end of low temperature radiation reduces the energy consumption by more than 30%compared with the conventional air conditioning(air plate+floor heating)system.The comprehensive energy efficiency of the whole system can be improved by more than 10%through automatic control and energy consumption supervision and management system.This study has reference significance for the energy efficiency improvement of ground source heat pump system.
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