What is the temperature of the high-pressure pipe in a car's air conditioning system?

[DelReagan]

The temperature of the high-pressure pipe in a car's air conditioning system is approximately 80 to 120 degrees. Reasons for the high-pressure pipe not being hot include insufficient refrigerant, excessive opening of the expansion valve, compressor not working, or compressor malfunction. The car air conditioning system mainly consists of a compressor, expansion valve, high-pressure pipeline, low-pressure pipeline, evaporator, evaporator temperature sensor, and refrigerant. The working principle of the car air conditioning system is as follows: when the AC switch is pressed and the blower switch is turned on, the air conditioning system enters working state. First, the compressor compresses the refrigerant into a high-temperature and high-pressure liquid, which then becomes a medium-temperature and low-pressure liquid after being cooled by the air conditioning radiator, and finally turns into a low-temperature and low-pressure gas after being throttled by the expansion valve.