What Causes the Sound of Running Water in a Car's Air Conditioning System?

[LaSamantha]

Car air conditioning systems produce a sound resembling running water due to water passing through the heater core. Below is relevant information about car air conditioning: 1. Compressor: Driven by the engine, it continuously draws in low-temperature, low-pressure refrigerant vapor generated by heat absorption and vaporization in the evaporator. After compression, it forms high-temperature, high-pressure refrigerant vapor, which is then discharged to the condenser, creating high-pressure conditions for continuous condensation and heat release in the condenser. Simultaneously, it overcomes the circulation resistance of the refrigerant in the cooling circuit. 2. Condenser: It releases the heat contained in the high-temperature, high-pressure refrigerant vapor discharged by the compressor to the outside air flowing through the condenser, and condenses the refrigerant vapor into refrigerant liquid at a certain temperature. Most condensers are located in front of the radiator at the front of the vehicle and are cooled by the cooling fan and the oncoming airflow generated by the car's movement.