How air source heat pumps work
A complete air energy heat pump consists of 2 main parts:
Manufacture the cold air part and heat the hot water part. But in fact, these two parts are closely related, inseparable, and must work at the same time. That is, while heating the hot water, the kitchen is cooled. Or heating the hot water while cooling the kitchen.
Its internal structure is mainly composed of four core components: compressor, condenser, expansion valve and evaporator.
The working process is as follows: the compressor compresses the recirculated low-pressure refrigerant and turns it into a high-temperature and high-pressure gas. The high-temperature and high-pressure refrigerant gas flows through the copper pipe wound around the water tank, and the heat is conducted to the water tank through the copper pipe to be cooled. The refrigerant that has come down becomes liquid under the continuous action of the pressure, and enters the evaporator after the expansion valve. Since the pressure of the evaporator suddenly drops, the liquid refrigerant rapidly evaporates into a gaseous state and absorbs a large amount of heat. At the same time, under the action of the fan, a large amount of air flows through the outer surface of the evaporator, and the energy in the air is absorbed by the evaporator, and the temperature of the air is rapidly lowered, and the air is discharged into the kitchen. The refrigerant that has absorbed a certain amount of energy is then returned to the compressor for the next cycle.
It can be seen from the above working principle that the working principle of the air energy heat pump is similar to the air conditioning principle. The inverse Carnot principle is applied. By absorbing a large amount of low temperature heat energy in the air, it is converted into high temperature heat energy through compression of the compressor, and is transmitted to In the water tank, heat the water. The whole process is a process of energy transfer (transfer from air to water), not a process of energy conversion, no heating of hot water by electric heating elements, or combustion of combustible gas to heat hot water.
In short, regardless of any air conditioner, the principle of energy conservation is followed: the process of energy (hot and cold) exchange, the cooling is to exchange the heat inside the room to the outside. If it is an air cooler, the heat is exchanged to the atmosphere. Now most air conditioners work like this. To some extent, the local temperature rises, and the air-energy heat pump here refers to the released energy to the water tank to exchange heat. Heating is reversed. Refrigerant circulation: gas state --> liquid state ---> gas state, the gas state becomes heat in the liquid process under the pressure of the compressor. After the heat is discharged, the liquid refrigerant turns cold and flows to the indoor exchange pipe to exchange air with the indoor air to become cold air. At this time, it became a gaseous refrigerant.
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