Geothermal pump is a kind of green technology. The working principle of geothermal pump is to use geothermal resources to convert low energy into high energy to achieve energy saving. The energy efficiency ratio of geothermal pump can reach more than 5, and it is more than 40% energy saving than ordinary central air conditioning. At present, China is also strongly advocating a central air-conditioning system for geothermal pumps. Many experts believe that geothermal pumps will be the future and trend of central air-conditioning. Next Xiaobian introduced geothermal pump working principle and geothermal pump technical characteristics.
What is a geothermal pump
Ground-source heat pumps are mainly divided into three forms: groundwater systems, surface water systems, and buried pipe systems. Compared with the first two ground-source heat pump systems, the ground pipe system is commonly known as a ground-source heat pump. The system uses the shallow surface soil as a heat source, and exchanges heat with a water circulation system through a geothermal heat exchanger composed of underground pipes. It is also the most widely used ground source heat pump system.
Geothermal pump working principle
The ground source heat pump system extracts heat from the ground or surface water (groundwater) in the winter and from the ground in the winter, and stores the heat in the building in the summer in order to solve the heat and cold source of heating and air conditioning in winter and summer. In summer, the heat from the room is transferred to the underground through the unit, which cools the room and stores heat for winter use. In the winter, the heat in the soil is transferred to the room through a heat pump to heat the room, and at the same time, the cold is stored for summer use. The earth soil provides a good source of free energy storage, thus realizing the seasonal energy conversion.
Ground source heat pump works in winter
In the winter heat pump, the refrigerant flows in a positive direction. The high-temperature and high-pressure R22 gas discharged from the compressor enters the condenser and releases heat to the water in the water collector. The heat is converted into high-temperature and high-pressure liquids, which are throttled and reduced to low temperatures by the thermal expansion valve. The low-pressure liquid enters the evaporator, absorbs the low-temperature heat from the underground circulating liquid, and then turns into a low-temperature and low-pressure saturated steam and enters the compressor suction end. The compressor compresses and discharges the high-temperature and high-pressure gas to complete a cycle. In this way, the underground low-temperature heat energy is “carried†to the water collector so as to continuously provide hot water of 45° C. to 50° C. to the user.
Ground source heat pump operation in summer
In the summer heat pump, the refrigerant flows in the reverse direction. The condenser that exchanges heat with the user becomes the evaporator and extracts heat energy from the low-temperature water (7 -12 °C) in the collector. The evaporator that exchanges heat with the underground circulating liquid turns into condenser. The underground circulating liquid discharges heat, and the heat in the circulating liquid is discharged to the underground low-temperature area, so that the user is provided with 7 - 12 °C cold water continuously and continuously.
Geothermal pump technology features
Environmental protection: The use of electricity, there is no combustion process, no pollution to the surrounding environment; no need to use cooling towers, no external hanging machine, no direct heat discharge to the surrounding atmosphere, no heat island effect, no noise; no groundwater extraction, no damage to groundwater resources . One machine for three purposes: heating in winter, cooling in summer and hot water for domestic use throughout the year. Long service life: more than 20 years of service life, 2-4 times that of split type or window type air conditioner. Full computer control, stable performance, remote control by telephone, temperature and humidity control and fresh air distribution.
Editor's summary: The working principle of the geothermal pump and the technical characteristics of the geothermal pump are introduced here. I hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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