What is the principle of air conditioning refrigeration system? What is the heating principle of the air conditioner?
When we use the air conditioner, the commonly used function should be the cooling function, because the cooling function can bring us a more comfortable and cool environment in summer, but we all have these principles about how the air conditioner is cooled. understood? Let us introduce to you what is the principle of air conditioning and refrigeration system? What is the heating principle of the air conditioner?
What is the principle of air conditioning refrigeration system
1. The working principle of air conditioning unit refrigeration
When the system is working, the compressor sucks the low-temperature and low-pressure refrigerant vapor produced by the evaporator into the cylinder. After being compressed by the compressor, the pressure rises (the temperature also rises) to be slightly greater than the pressure in the condenser, and the cylinder The high-pressure refrigeration system vapor is discharged into the condenser.
In the condensation, the high-temperature and high-pressure refrigerant vapor exchanges heat with the lower temperature air (or room temperature water) and condenses into a liquid refrigerant. At this time, the liquid refrigerant passes through the expansion valve to cool down (depressurize) and then enters the evaporator. The device absorbs the heat of the object being cooled and then vaporizes. In this way, the object to be cooled is cooled and the refrigerant vapor is sucked away by the compressor. Therefore, the four processes of compression, condensation, expansion and evaporation complete a cycle in the refrigeration system.
2. Detailed introduction of the four major refrigeration items
1. The evaporator is a very important part of the four major refrigeration components. The low-temperature condensed "liquid" body passes through the evaporator to exchange heat with the outside air, "gas" and absorb heat to achieve the effect of cooling.
2. Its compressor compressor is an important part of refrigeration. If the refrigerant is compared to human blood, then the compressor is the human heart, which is the driving force for the refrigerant to circulate in the refrigeration system. It absorbs the low-temperature and low-pressure gas from the evaporator, drives the piston to compress it through the operation of the motor, and discharges the high-temperature and high-pressure refrigerant gas to provide power for the refrigeration cycle. Compressors are divided into piston compressors, screw compressors, centrifugal compressors, etc.
3. The condenser is a heat exchanger that cools and liquefies the high-temperature refrigerant vapor compressed by the refrigeration compressor.
4.The function of the throttle valve is to throttle the saturated liquid or subcooled liquid under the condensing pressure in the condenser to the evaporating pressure and evaporating temperature, and adjust the flow of refrigerant into the evaporator according to the change of load. Expansion valve is a common throttling device in refrigeration system.
What is the heating principle of air conditioner
1. In fact, the heat pump heating uses the compression condenser of the refrigeration system to heat the indoor air. When the air conditioner is in refrigeration, the low-pressure refrigerant liquid evaporates and absorbs heat in the evaporator, while the high-temperature and high-pressure refrigerant releases heat and condenses in the condenser. The heat pump heating is through electromagnetic reversal, which exchanges the positions of the suction and exhaust pipes of the refrigeration system. The indoor coil of the original cooling work evaporator turns into a heating condenser, so that the refrigeration system absorbs heat from the outside and releases heat to the room to achieve the purpose of heating.
2. The air conditioner is actually controlled according to the thermal expansion and contraction of the medium. The indoor part is cold contraction, and the outdoor part is thermally expanded. But how thermally expands, that is, the compressor compresses the medium to do work. A large amount of heat is generated, not because it expands, and then it is transmitted through a capillary tube to a much larger space, so that the pressure of the medium is much lower at once. This is the cold shrinkage and heat absorption, which instantly makes the room The heat is exchanged into cold gas.
What we have introduced to you above is about the principle of air-conditioning refrigeration and the principle of air-conditioning heating. In fact, the problem of air-conditioning refrigeration and heating does bring a lot of convenience to our lives. We will be cooler in summer and warmer in winter. I hope our introduction can help everyone.
