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Air-source heat pumps represent one of the most advanced energy solutions available today. Their working principle differs from that of solar and geothermal heat pumps. Like solar and geothermal energy, air-source heat pumps also constitute free energy sources; they are the result of advances in energy-saving technology. Air-source heat pumps can be used in various applications such as providing hot water for domestic use, air conditioning, and home heating. They have become a symbol of high technology and a higher standard of living. Below, KePao Technology will guide you through the working principle of air-source heat pumps. 1. Working principle of air-source heat pump hot water systems The principle of air-source heat pumps is based on the reverse Carnot principle; it uses very little electrical energy to absorb large amounts of low-temperature heat from the air, and through compression by the compressor, this heat is converted into high-temperature heat. It is an energy-efficient and highly effective heat pump technology. During operation, an air-source heat pump draws heat from the ambient thermal energy in the air by means of the evaporator, to vaporize the working fluid. The vaporized fluid is compressed by the compressor, resulting in an increase in its pressure and temperature. When this high-temperature vapor passes through a special annular tube condenser permanently attached to the outer surface of the water storage tank, it condenses into a liquid; the heat released in this process is transferred to the water contained in the heat pump’s water storage tank. The condensed working fluid then returns to the evaporator via an expansion valve, where it is vaporized again, and this cycle repeats continuously. 2. Differences in the working principle of air-source heat pumps compared to solar heating The heating principle of air-source heat pump systems for hot water production is completely different from that of traditional solar hot water systems. Air-source heat pumps use air, water, solar energy, etc. as low-temperature heat sources; they draw heat from these sources using electrical energy to heat domestic water. The hot water is then delivered directly to users through a circulation system for use as hot water, or it can be used for heating small areas via fan-coil units. Air-source hot water systems are widely used in school dormitories, hotels, bath centers, and other facilities. In addition, the working principle of air-source heat pumps is also applied in air conditioning technology. From small heat pumps for household use to new types of heat pumps for industrial and agricultural production, considerable economic and social benefits have been achieved. The article is from Shenzhen Keppao: http://www.szkepao.com. Please indicate the source when reproducing it; thank you!