How much fuel is consumed by running the car air conditioner for one hour?

[DiLincoln]

When idling with the air conditioner on, a small car consumes about 7 to 8 points of fuel per hour. Compression process: The compressor draws in low-temperature, low-pressure refrigerant gas from the evaporator outlet and compresses it into high-temperature, high-pressure gas, which is then discharged from the compressor. Heat dissipation process: The high-temperature, high-pressure superheated refrigerant gas enters the condenser. Due to the reduction in pressure and temperature, the refrigerant gas condenses into a liquid, releasing a significant amount of heat. Throttling process: The higher-temperature and higher-pressure refrigerant liquid passes through the expansion device, causing its volume to increase and its pressure and temperature to drop sharply, exiting the expansion device as a mist (fine droplets). Heat absorption process: The mist-like refrigerant liquid enters the evaporator. Since the boiling point of the refrigerant is much lower than the temperature inside the evaporator, the refrigerant liquid evaporates into a gas. During the evaporation process, it absorbs a large amount of surrounding heat, and then the low-temperature, low-pressure refrigerant vapor re-enters the compressor.