The ground source heat pump is a device that transfers low-grade heat energy to high-grade heat energy by inputting a small amount of high-grade energy (such as electrical energy). Usually the ground source heat pump consumes 1kwh of energy, and the user can get more than 4kwh of heat or cold.
The ground source heat pump is a central heating air-conditioning system consisting of a water-ground source heat pump unit, a geothermal energy exchange system, and a system in a building. According to the different forms of the geothermal energy exchange system, the ground source heat pump system is divided into buried tube ground source heat pump system, groundwater ground source heat pump system and surface water ground source heat pump system.
The concept of "ground source heat pump" was first proposed by Swiss experts in 1912, and the proposal of this technology began in Britain and the United States. The Nordic countries mainly focus on winter heating, while the United States focuses on combined supply of winter and summer.
Main features
(1) Ground source heat pump technology belongs to renewable energy utilization technology. The ground source heat pump is a heating and air conditioning system that uses shallow geothermal resources on the earth's surface (usually less than 400 meters deep) as a cold and heat source for energy conversion. The shallow surface geothermal resources can be called geothermal energy, which refers to the low-temperature potential thermal energy stored in the surface soil, groundwater or rivers, lakes that absorb solar energy and geothermal energy. The shallow surface is a huge solar collector that collects 47% of the solar energy, more than 500 times the energy used by humans every year. It is not restricted by regions, resources, etc. It is truly large and ubiquitous. This near-infinite renewable energy stored in the shallow surface makes the ground energy a form of clean renewable energy.
(2) The ground source heat pump is a cost-effective energy-saving technology. The COP value of the ground source heat pump reaches more than 4, that is to say consumes 1KWh of energy, users can get more than 4KWh of heat or cooling. [1] 
(3) The environmental benefit of ground source heat pump is remarkable. The device operates without any pollution, and can be built in residential areas, without burning, exhausting smoke, and waste. There is no need to pile up fuel waste sites, and there is no need to transport heat over long distances.
(4) The ground source heat pump is versatile and has a wide range of applications. The ground source heat pump system can be used for heating, air conditioning, and domestic hot water. One machine can be used for multiple purposes. One system can replace the original two sets of boilers or air conditioners; it can be used in hotels, shopping malls, office buildings, schools and other buildings , More suitable for heating of villa residence.