The deep well pump is a water lifting machine that directly connects the motor and the water pump to the submersible water. It is suitable for extracting groundwater from deep wells, and can also be used for water pumping projects such as rivers, reservoirs, and canals. It is mainly used for irrigation of farmland and human and animal water in plateau mountainous areas. It can be used for water supply and drainage in cities, factories, railways, mines and construction sites. Because the deep well pump is directly driven into the water by the motor and the pump body, whether it is safe and reliable will directly affect the use of the deep well pump and the working efficiency. Therefore, the deep well pump with high safety and reliability is also the first choice.
In groundwater source heat pump air conditioning systems, the water supply to a deep well pump often meets the amount of water required by two or more heat pump units. However, in actual operation, it was found that the heat pump unit was operated at part load most of the time, while the deep well pump was always operating at full load, resulting in a large increase in electricity and water charges.
The frequency conversion speed regulation technology has many applications in the air conditioning system with its remarkable energy saving effect and reliable control mode, and its technology is also relatively mature, but it is rare to use the deep well pump water supply in the groundwater source heat pump air conditioning system. But it is quite necessary. A pilot survey of groundwater source heat pump application in Shenyang area found that in the groundwater source heat pump air conditioning system, when the heat pump capacity is not large, the water supply of one deep well pump can meet the water quantity required by two or more heat pump units. In actual operation, it was found that the heat pump unit was partially loaded for most of the time, while the deep well pump was always operating at full load, resulting in a large increase in electricity and water charges. Therefore, the application of the deep well pump variable frequency speed regulation water supply technology in the groundwater source heat pump system has great energy saving potential.