How Much Fuel Does Running Only the Car AC Consume?

[AndersonAnn]

Driving the same route with the AC on consumes 20% to 30% more fuel compared to driving without AC. Below is relevant information: Introduction to Vehicle Air Conditioning: The vehicle 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 vehicle, providing a comfortable environment for the driver. 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 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 vehicle's interior air passing through the evaporator, causing it to evaporate into a gas. The gas is then drawn back into the compressor to begin the next cycle.