Ground source heat pump technology principle: Ground source heat pump is a kind of utilization of underground shallow geothermal resources can both heating and cooling energy efficient and environmentally friendly air conditioning system. Ground source heat pump by inputting a small amount of high-grade energy (electricity), you can realize the transfer of energy from low-temperature heat source to high-temperature heat source. In winter, the heat in the soil is "taken" out and supplied to the room for heating after raising the temperature; in summer, the heat in the room is "taken" out and released to the soil, and the balance of underground temperature can be ensured all year round.
Ground source heat pump advantages:
1, ground source heat pump technology is renewable energy utilization technology
Ground source heat pump is the use of the earth's surface shallow geothermal resources (usually less than 400 meters deep) as a source of hot and cold, energy conversion heating and air conditioning system. Surface shallow geothermal resources can be called ground energy (EarthEnergy, refers to the surface of the soil, groundwater, or rivers, lakes in the absorption of solar energy, geothermal energy and the low-temperature potential heat energy. The shallow layer of the earth's surface is a huge solar collector that collects 47% of the sun's energy, 500 times more than the energy utilized by humans each year. It is not subject to geographical and resource constraints, and is truly large in volume and ubiquitous. This stored in the surface of the shallow nearly unlimited renewable energy, making the ground energy has also become a form of clean renewable energy.
2, ground source heat pump is a cost-effective energy-saving technology
Ground energy or surface shallow geothermal resources, the temperature is relatively stable throughout the year, higher than the ambient air temperature in winter, lower than the ambient air temperature in summer, is a very good heat pump heat source and air conditioning cold source, the temperature characteristics of the ground-source heat pump than the traditional air-conditioning system operating efficiency to be higher than 40%, and therefore to energy saving and saving operating costs of about 40%. In addition, the ground energy temperature is more constant characteristics, so that the heat pump unit operation is more reliable and stable, but also to ensure that the system's high efficiency and economy.
According to the U.S. Environmental Protection Agency EPA estimates, well-designed and installed ground source heat pumps can save users, on average, 30 to 40% of the heating, cooling and air conditioning operating costs.
3、Ground source heat pump has significant environmental benefits
Ground source heat pump pollutant emissions, compared with air source heat pump, equivalent to reduce more than 40%, compared with electric heating, equivalent to reduce more than 70%, if the combination of other energy-saving measures to save energy and reduce emissions will be more obvious. Although also using refrigerant, but 25% less than conventional air conditioning device charging; is a self-contained system, i.e., the device can be sealed in the factory floor beforehand, so that the refrigerant leakage rate is greatly reduced. The unit operates without any pollution, can be built in a residential area, has no combustion, no fumes, no waste, does not require a site for fuel waste, and does not require heat to be transported over long distances.
4、Ground source heat pump is multi-purpose.
Wide range of applications of ground source heat pump system can be heating, air conditioning, but also for domestic hot water, a multi-purpose, a system can replace the original boiler plus air conditioning of the two sets of devices or systems; can be used in hotels, shopping malls, office buildings, schools, and other buildings, and is more suitable for villa heating, air conditioning.
5、Low maintenance cost of ground source heat pump air conditioning system
Under the same conditions, the building with ground source heat pump system can reduce the maintenance cost. Ground source heat pump is very durable, its mechanical moving parts are very few, all the components are either buried in the ground or installed indoors, thus avoiding the harsh outdoor climate, the underground part can be guaranteed for 50 years, the ground part can be guaranteed for 30 years, so the ground source heat pump is maintenance-free air-conditioning, saves the maintenance cost, so that the user's investment can be recovered in about 3 years.
In addition, the service life of the unit is long, more than 15 years; the unit is compact and space-saving; the degree of automatic control is high, and it can be unattended.
Disadvantages of ground source heat pump:
