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The compressor, which is responsible for drawing in the refrigerant gas from the evaporator, plays a crucial role in the cooling process. As the refrigerant gas enters the compressor, the pressure in the evaporator decreases, thus causing a drop in pressure. This lower pressure allows the refrigerant to evaporate at lower temperatures, resulting in the formation of cold vapor.

The A/C compressor then comes into action by compressing this cold vapor. During the compression process, the refrigerant gas gets warmed up. To dissipate this heat, the warmed refrigerant gas is transported through pipes to the condenser. In the condenser, the refrigerant liquefies once again, releasing heat in the process.

After liquefaction, the refrigerant is directed to the area that requires cooling. In this area, typically the passenger compartment, the refrigerant absorbs the heat from the incoming air. This absorption of heat causes the refrigerant to turn back into a gas once again, completing the cycle.

Subsequently, the gas refrigerant returns to the evaporator to be drawn in by the compressor for the next round. The compressor then repeats the compression process to maintain the cooling cycle. Throughout this process, the refrigerant undergoes various changes in state, from gas to liquid and vice versa, as it continuously absorbs and releases heat to provide cooling.


AC compressor
The main function of an automotive air conditioning compressor is to circulate and compress the refrigerant gas within the air conditioning system. This process is crucial for the proper operation and cooling of the vehicle's interior.

The compressor plays a vital role in the overall performance of the air conditioning system. Its primary function is to compress the low-pressure refrigerant gas from the evaporator and raise its pressure and temperature.

When the compressor receives the low-pressure gas, it utilizes a piston or a rotary mechanism to compress the gas, causing a rapid increase in temperature and pressure. This compressed gas is then pushed into the condenser, where it changes from a gaseous state to a high-pressure liquid state.

The high-pressure liquid refrigerant then flows into the receiver drier or accumulator, where it is further filtered to remove any moisture, debris, or contaminants. This process ensures the longevity and efficiency of the air conditioning system.

From the receiver drier or accumulator, the high-pressure liquid travels to the expansion valve or orifice tube. These components regulate the flow and pressure of the refrigerant into the evaporator.

As the high-pressure liquid refrigerant enters the evaporator, it rapidly expands and converts back into a low-pressure gas. This phase change absorbs heat from the surrounding air, resulting in cool air being blown into the vehicle's interior.

Once the refrigerant gas completes its cooling cycle in the evaporator, it is then sucked back into the compressor to restart the process and continue the circulation of the refrigerant throughout the air conditioning system.

In addition to its primary function of compressing and circulating the refrigerant, the compressor also plays a secondary role in maintaining the overall reliability and efficiency of the air conditioning system. It helps to lubricate and cool other components by circulating oil throughout the system. This lubrication prevents wear and tear, reduces friction, and increases the lifespan of the compressor and other components.

Overall, the automotive air conditioning compressor is the heart of the air conditioning system, responsible for compressing and circulating the refrigerant gas, enabling the vehicle to have a cool and comfortable interior environment. Its proper functioning is essential for the efficient operation of the air conditioning system and ensuring a pleasant driving experience, particularly in hot and humid climates.