Why does the car air conditioning not cool when the car is not running?

1 Answers
AngelaRose
07/29/25 12:46pm
When the car is not running, the air conditioning does not cool because moisture has entered the refrigeration system, leading to insufficient cooling or no cooling at all. Below is an introduction to automotive air conditioning: 1. Introduction to Automotive Air Conditioning: The automotive air conditioning system consists of a compressor, condenser, throttle element, evaporator, fan, and necessary control components. It is used to regulate the temperature and humidity inside the car, providing a comfortable environment for the driver. 2. Working Principle: When the compressor operates, it draws in low-temperature, low-pressure gaseous refrigerant from the evaporator. After compression, the temperature and pressure of the refrigerant increase, and it is sent to the condenser. Inside the condenser, the high-temperature, high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser, causing it to liquefy and turn into a liquid. When the liquid refrigerant flows through the throttle device, its temperature and pressure decrease, and it enters the evaporator. Inside the evaporator, the low-temperature, low-pressure liquid refrigerant absorbs heat from the inside air passing through the evaporator, causing it to evaporate and turn into a gas. The gas is then drawn back into the compressor for the next cycle.
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