Ground source heat pump overview
Ground-source heat pump is a kind of energy-efficient air-conditioning equipment that can be used for both heat and cooling by using shallow geothermal resources (also known as ground energy, including groundwater, soil or surface water). The ground source heat pump transfers heat from low temperature to high temperature by inputting a small amount of high-grade energy (such as electric energy). In the winter, the ground can be used as a heat source for heat pump heating and a cold source for summer cooling. In winter, the heat in the ground energy is taken out, and after the temperature is raised, the indoor heating is supplied. In summer, the heat in the room is taken out and released. The ground can go. Usually the ground source heat pump consumes 1 kWh of energy, and the user can get more than 4 kWh of heat or cold.
Origin of ground source heat pump
The concept of "ground source heat pump" was first proposed by Swiss experts in 1912, and the technology was proposed in the United Kingdom and the United States. The Nordic countries mainly focus on winter heating, while the United States focuses on winter and summer combined supplies. Since the climatic conditions in the United States are very similar to those in China, the study of the application of ground source heat pumps in the United States has implications for the development of ground source heat pumps in China.
Ground source heat pump heat source
At present, ground source heat pumps have successfully utilized various types of water resources such as groundwater, rivers and lakes, reservoir water, seawater, urban water, industrial tail water, tunnel water, and soil sources as cold and heat sources for water source heat pumps.
Ground source heat pump
Ground source heat pump heating and air conditioning system is mainly divided into three parts: outdoor ground energy heat exchange system, ground source heat pump unit and indoor heating and air conditioning end system. Among them, the ground source heat pump has two main forms: water-water or water-air. The heat transfer between the three systems by water or air heat exchange medium, the heat exchange medium between the ground source heat pump and the ground energy is water, and the heat exchange medium at the end of the building heating and air conditioning may be water or air.
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