Air energy refers to the low-grade heat energy contained in the air. However, according to the second law of thermodynamics, heat cannot be transferred from a low-temperature heat source to a high-temperature heat source without causing other changes. Therefore, air cannot be used without consuming external energy.
Heat pump can absorb heat from air and transfer it to high temperature objects or environment. This technology is called air source heat pump. The use of heat pump needs to consume electric energy or heat energy. For example, the air conditioner at home is a typical air source heat pump when heating in winter, but it does not heat without electricity. Therefore, the air source heat pump is not driven by air energy, but by electric energy or heat energy. Air source heat pump can be used in heating, heating, drying and other fields.