What is the principle and process of air conditioning refrigeration?

Principle of air conditioning refrigeration

Working principle: the compressor compresses gaseous refrigerant into liquid refrigerant at high temperature and high pressure, and sends it to the condenser (outdoor unit) for heat dissipation, and then turns it into liquid refrigerant at normal temperature and high pressure. Therefore, the hot air blown from the outdoor unit is hot air. Then enter the capillary and enter the evaporator (indoor unit). Because the refrigerant in the evaporator suddenly increases when it reaches the space from the capillary, the pressure decreases, and the liquid will evaporate the refrigerant and turn it into a gaseous low-temperature refrigerant. To absorb a lot of heat, the evaporator will become cold, and the fan of the indoor unit will blow out the indoor air from the evaporator, so the cold air of the indoor unit will be blown out; When the water vapor in the air meets the cold evaporator, it will condense into water droplets and flow out along the pipeline. This is why the air conditioner will get water. The gaseous refrigerant returns to the compressor to continue compression and circulation. When heating, there is a component called the four-way valve, which makes the refrigerant in the condenser and evaporator flow in the opposite direction to the refrigeration direction, so when heating, outdoor air blows and indoor machine blows hot air. In fact, this is the principle we have learned in junior high school physics. When we liquefy (change from gas to liquid), we give off heat, and when we evaporate (change from liquid to gas), we absorb heat.

Schematic diagram of air conditioning refrigeration

1 compressor (compression) -2 condenser (heat dissipation) -3 capillary (throttling) -4 evaporator (decentralized cooling) These four air conditioning refrigeration components are the above four reciprocating cycles, and vice versa.

What is the working principle of wall-mounted air conditioner? .

Air-conditioning uses the characteristics of Freon's "heat absorption in gasification and heat release in liquefaction" to reduce or increase the indoor temperature by cooling or heating. During refrigeration, freon vaporizes in the indoor unit to absorb indoor heat (indoor air cooling), and is taken to the outdoor unit for liquefaction and release to heat outdoor air. 2。 When heating, Freon evaporates in the outdoor unit to absorb outdoor heat (outdoor air is cooled), and is taken to the indoor unit for liquefaction and release, heating indoor air. Both indoor and outdoor air conditioners are equipped with heat exchangers. The heat exchanger is both a condenser and an evaporator ... After the air conditioner is electrified, the low-pressure steam of the refrigerant in the refrigeration system is sucked into the compressor, compressed into high-pressure steam, and then enters the condenser. At the same time, the outdoor air sucked by the axial fan flows through the condenser, taking away the heat released by the refrigerant and condensing the high-pressure refrigerant vapor into high-pressure liquid. The high-pressure liquid is injected into the evaporator after passing through the filter and throttling mechanism, and evaporates at the corresponding low pressure to absorb the surrounding heat. At the same time, the cross-flow fan makes air continuously enter the evaporator fins for heat exchange, and sends the released cold air into the room. In this way, the indoor air is continuously circulated and cooled. It's similar to the principle of refrigerator. Think about it, the refrigerator is very energy-saving, but making the air conditioner so small and opening a refrigerator the size of a house is very inefficient and there is no electricity. When will it make you feel good? Why do you turn on the air conditioner? Because cold air sinks more easily than hot air, you can let cold air cool the air from top to bottom, which is more effective and natural.

What is the principle and process of air conditioning refrigeration?

Refrigeration principle of air conditioner: An object that uses the heat absorption phenomenon of low boiling point refrigerant (such as Freon) in the phase change process, and uses the compressor to inhale and compress, the condenser to condense the heat, the throttle valve to reduce the pressure, and the evaporator to vaporize the circulating heat to reduce the refrigeration temperature of the refrigerator. Process flow: After the air conditioner is electrified, the low-pressure steam of refrigerant in the refrigeration system is sucked into the compressor, compressed into high-pressure steam, and then enters the condenser. At the same time, the outdoor air sucked by the axial fan flows through the condenser, taking away the heat released by the refrigerant and condensing the high-pressure refrigerant vapor into high-pressure liquid. The high-pressure liquid is injected into the evaporator after passing through the filter and throttling mechanism, and evaporates at the corresponding low pressure to absorb the surrounding heat. At the same time, the cross-flow fan makes air continuously enter the evaporator fins for heat exchange, and sends the released cold air into the room. In this way, the indoor air is continuously circulated and cooled. Composition and function of air conditioner: (1) The compressor sucks in refrigerant, which keeps the evaporator at low temperature, compresses the refrigerant and promotes the refrigerant circulation; (2) The condenser releases heat from high-pressure and high-temperature gaseous refrigerant and condenses it into liquid state; (3) The throttle valve-throttling; (4) The evaporator-the low-pressure and low-temperature liquid refrigerant evaporates into gas through heat absorption.