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How much fuel does a car consume when running the air conditioner overnight?

1 Answers

McGraham

07/24/25 11:54pm

Idling with the air conditioner on consumes approximately 2.2406 liters of fuel per hour. Here is the relevant information: Data: To calculate the fuel consumption caused by the air conditioner, it is necessary to first understand the compressor's power and the fuel consumption rate per unit time. Calculating only the air conditioner's fuel consumption, a typical car compressor has a power ranging from 2.5 kW to 4 kW. Combined with the engine's idling fuel consumption rate: assumed to be 400 grams per kilowatt-hour. Calculation: Assuming an average compressor power of 3 kW, the calculation formula is: 400x3=1200 (grams)/hour; considering the gasoline density ratio of 0.75, the air conditioner compressor's hourly fuel consumption is 1.5 liters/hour.

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