What is the difference between a water source heat pump and a water ring heat pump

What is the difference between a water source heat pump and a water ring heat pump

1. Water source heat pump technology

Water source heat pump technology is a low-temperature low-level thermal energy resource formed by using solar energy and geothermal energy absorbed from shallow water sources on the earth's surface, such as groundwater, rivers and lakes, and adopts the principle of heat pump to realize the transfer of low-level thermal energy to high-level thermal energy through a small amount of high-level electrical energy input. A technology.

　　 Shallow water sources on the earth's surface, such as groundwater with a depth of less than 1,000 meters, surface rivers, lakes, and oceans, absorb considerable radiant energy from the sun entering the earth, and the temperature of the water sources is generally very stable. The working principle of the water source heat pump unit is to transfer the heat from the building to the water source in summer. Due to the low temperature of the water source, the heat can be taken away efficiently. In winter, energy is extracted from the water source. The heat pump principle uses air or water as the carrier. The refrigerant is sent to the building after raising its temperature. Usually water source heat pump consumes 1kW of energy, and users can get more than 4kW of heat or cooling.

　　 2. Water loop heat pump air conditioning system

　　 The so-called water ring heat pump air conditioning system refers to an application method of small water/air heat pump units. That is, the water loop connects small water/air heat pump units in parallel to form an air conditioning system with heat pump heating and cooling with the main feature of recovering waste heat inside the building.

　　 The water/air heat pump unit in the water loop heat pump air-conditioning system operates under cooling conditions most of the year. Compared with the fan coil system, generally speaking, it is not energy-saving and there is no corresponding environmental benefit. This is because the coefficient of refrigeration (cop value) of the small water/air heat pump unit is lower than that of the large water chiller. Generally, the cop value of the small water and air heat pump unit is 2.86-3.63 when cooling, while the screw chiller is generally 4.88 -5.25, some can be as high as 5.47-5.74. Centrifugal chillers are generally 5.00-5.88, and some can be as high as 6.76. Therefore, in some southern cities (such as Florida), water loop heat pump air conditioning systems are not suitable.