Comparison of ground source heat pump and air source heat pump

Comparison of ground source heat pump and air source heat pump

1. Ground source heat pump technology

　　The ground-source heat pump central air-conditioning system is a heating and air-conditioning system composed of rock soil, groundwater or surface water as the low-temperature heat source, composed of water-source heat pump units, geothermal energy exchange systems, and building systems. Under the sun's radiation, the earth becomes a giant "storage" of solar energy, storing a large amount of clean and renewable energy in the shallow water and rock and soil of the earth's crust, called shallow geothermal energy, or ground source for short.

　　 In winter, the heat pump unit absorbs heat from the ground source (shallow water or rock soil) to heat the building; in summer, the heat pump unit absorbs heat from the room and transfers it to the ground source to achieve building air conditioning and cooling.

　　According to the different forms of the ground heat exchange system, the ground source heat pump system is divided into a ground water ground source heat pump system, a surface water ground source heat pump system and a buried pipe ground source heat pump system.

　　Ground source heat pumps include methods of pumping groundwater, pipe buried, lake water or river water, etc. The method of pumping lake water or river water has the lowest cost, and the pipe buried method is the most expensive, but the best.

　　 As long as there are enough places to bury pipelines (underground cold and heat exchange devices) or the government allows the extraction of groundwater, the ground source heat pump central air conditioner should be given priority. Ground-source heat pump central air-conditioning is so energy-saving because the ground-source heat pump technology uses underground energy. The underground energy comes from solar energy. The saying "There is oil under our feet" is very good and vivid. But air energy water heaters also have some unique advantages that other products can't compare.

　　 2. Air source heat pump technology

　　 Air source heat pump technology is an energy-saving and environmentally friendly heating technology based on the principle of reverse Carnot cycle. The air source heat pump system obtains a low-temperature heat source through natural energy (air heat storage), and becomes a high-temperature heat source after the efficient heat collection and integration of the system, which is used for heating or supplying hot water. The heat collection efficiency of the whole system is very high.

The heat pump has four major advantages. The first is energy saving, which is conducive to the comprehensive utilization of energy. The second is conducive to environmental protection. The third is the combination of cold and heat. The equipment has a high application rate and saves investment. The fourth is because it is electricity. Drive, so it is more convenient to control, so the heat pump has attracted everyone's attention.

Heat pump technology is an energy technology in the 21st century. The use of heat pumps can improve energy efficiency. The use of energy efficiency has two meanings. From an environmental point of view, it can reduce greenhouse gas emissions and reduce harmful effects to the environment. The factor of, from another aspect, is a technology to solve the high-altitude load of electric power.

The heat pump uses the reverse Carnot principle to absorb a large amount of low-temperature heat energy in the air with very little electric energy, which is converted into high-temperature heat energy through the compression of the compressor, and is transmitted to the water tank to heat the hot water, so it has low energy consumption, high efficiency and fast speed , Good safety, strong environmental protection, continuous supply of hot water.